1 /* SPDX-License-Identifier: LGPL-2.1+ */
9 #include <sys/inotify.h>
10 #include <sys/ioctl.h>
11 #include <sys/reboot.h>
12 #include <sys/timerfd.h>
20 #include "sd-daemon.h"
21 #include "sd-messages.h"
24 #include "all-units.h"
25 #include "alloc-util.h"
27 #include "boot-timestamps.h"
28 #include "bus-common-errors.h"
29 #include "bus-error.h"
30 #include "bus-kernel.h"
32 #include "clean-ipc.h"
33 #include "clock-util.h"
35 #include "dbus-manager.h"
36 #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"
58 #include "parse-util.h"
59 #include "path-lookup.h"
60 #include "path-util.h"
61 #include "plymouth-util.h"
62 #include "process-util.h"
63 #include "ratelimit.h"
64 #include "rlimit-util.h"
66 #include "serialize.h"
67 #include "signal-util.h"
68 #include "socket-util.h"
70 #include "stat-util.h"
71 #include "string-table.h"
72 #include "string-util.h"
75 #include "syslog-util.h"
76 #include "terminal-util.h"
77 #include "time-util.h"
78 #include "transaction.h"
79 #include "umask-util.h"
80 #include "unit-name.h"
81 #include "user-util.h"
85 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
86 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
88 /* Initial delay and the interval for printing status messages about running jobs */
89 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
90 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
91 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
93 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
94 * the queue gets more empty. */
95 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
97 /* How many units and jobs to process of the bus queue before returning to the event loop. */
98 #define MANAGER_BUS_MESSAGE_BUDGET 100U
100 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
101 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
106 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
107 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
108 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
109 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
110 static int manager_run_environment_generators(Manager
*m
);
111 static int manager_run_generators(Manager
*m
);
113 static void manager_watch_jobs_in_progress(Manager
*m
) {
119 /* We do not want to show the cylon animation if the user
120 * needs to confirm service executions otherwise confirmation
121 * messages will be screwed by the cylon animation. */
122 if (!manager_is_confirm_spawn_disabled(m
))
125 if (m
->jobs_in_progress_event_source
)
128 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
129 r
= sd_event_add_time(
131 &m
->jobs_in_progress_event_source
,
134 manager_dispatch_jobs_in_progress
, m
);
138 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
141 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
143 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
146 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
147 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
151 p
= mempset(p
, ' ', pos
-2);
152 if (log_get_show_color())
153 p
= stpcpy(p
, ANSI_RED
);
157 if (pos
> 0 && pos
<= width
) {
158 if (log_get_show_color())
159 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
163 if (log_get_show_color())
164 p
= stpcpy(p
, ANSI_NORMAL
);
167 if (log_get_show_color())
168 p
= stpcpy(p
, ANSI_RED
);
171 p
= mempset(p
, ' ', width
-1-pos
);
172 if (log_get_show_color())
173 strcpy(p
, ANSI_NORMAL
);
177 void manager_flip_auto_status(Manager
*m
, bool enable
) {
181 if (m
->show_status
== SHOW_STATUS_AUTO
)
182 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
184 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
185 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
189 static void manager_print_jobs_in_progress(Manager
*m
) {
190 _cleanup_free_
char *job_of_n
= NULL
;
193 unsigned counter
= 0, print_nr
;
194 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
196 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
200 assert(m
->n_running_jobs
> 0);
202 manager_flip_auto_status(m
, true);
204 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
206 HASHMAP_FOREACH(j
, m
->jobs
, i
)
207 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
210 /* m->n_running_jobs must be consistent with the contents of m->jobs,
211 * so the above loop must have succeeded in finding j. */
212 assert(counter
== print_nr
+ 1);
215 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
217 cylon_pos
= 14 - cylon_pos
;
218 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
220 m
->jobs_in_progress_iteration
++;
222 if (m
->n_running_jobs
> 1) {
223 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
227 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
228 if (job_get_timeout(j
, &x
) > 0)
229 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
231 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
232 "%sA %s job is running for %s (%s / %s)",
234 job_type_to_string(j
->type
),
235 unit_status_string(j
->unit
),
239 static int have_ask_password(void) {
240 _cleanup_closedir_
DIR *dir
;
243 dir
= opendir("/run/systemd/ask-password");
251 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
252 if (startswith(de
->d_name
, "ask."))
258 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
259 int fd
, uint32_t revents
, void *userdata
) {
260 Manager
*m
= userdata
;
266 m
->have_ask_password
= have_ask_password();
267 if (m
->have_ask_password
< 0)
268 /* Log error but continue. Negative have_ask_password
269 * is treated as unknown status. */
270 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
275 static void manager_close_ask_password(Manager
*m
) {
278 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
279 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
280 m
->have_ask_password
= -EINVAL
;
283 static int manager_check_ask_password(Manager
*m
) {
288 if (!m
->ask_password_event_source
) {
289 assert(m
->ask_password_inotify_fd
< 0);
291 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
293 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
294 if (m
->ask_password_inotify_fd
< 0)
295 return log_error_errno(errno
, "Failed to create inotify object: %m");
297 if (inotify_add_watch(m
->ask_password_inotify_fd
, "/run/systemd/ask-password", IN_CREATE
|IN_DELETE
|IN_MOVE
) < 0) {
298 log_error_errno(errno
, "Failed to watch \"/run/systemd/ask-password\": %m");
299 manager_close_ask_password(m
);
303 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
304 m
->ask_password_inotify_fd
, EPOLLIN
,
305 manager_dispatch_ask_password_fd
, m
);
307 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
308 manager_close_ask_password(m
);
312 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
314 /* Queries might have been added meanwhile... */
315 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
316 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
319 return m
->have_ask_password
;
322 static int manager_watch_idle_pipe(Manager
*m
) {
327 if (m
->idle_pipe_event_source
)
330 if (m
->idle_pipe
[2] < 0)
333 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
335 return log_error_errno(r
, "Failed to watch idle pipe: %m");
337 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
342 static void manager_close_idle_pipe(Manager
*m
) {
345 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
347 safe_close_pair(m
->idle_pipe
);
348 safe_close_pair(m
->idle_pipe
+ 2);
351 static int manager_setup_time_change(Manager
*m
) {
356 if (MANAGER_IS_TEST_RUN(m
))
359 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
360 m
->time_change_fd
= safe_close(m
->time_change_fd
);
362 m
->time_change_fd
= time_change_fd();
363 if (m
->time_change_fd
< 0)
364 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
366 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
368 return log_error_errno(r
, "Failed to create time change event source: %m");
370 /* Schedule this slightly earlier than the .timer event sources */
371 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
373 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
375 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
377 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
382 static int manager_read_timezone_stat(Manager
*m
) {
388 /* Read the current stat() data of /etc/localtime so that we detect changes */
389 if (lstat("/etc/localtime", &st
) < 0) {
390 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
391 changed
= m
->etc_localtime_accessible
;
392 m
->etc_localtime_accessible
= false;
396 k
= timespec_load(&st
.st_mtim
);
397 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
399 m
->etc_localtime_mtime
= k
;
400 m
->etc_localtime_accessible
= true;
406 static int manager_setup_timezone_change(Manager
*m
) {
407 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
412 if (MANAGER_IS_TEST_RUN(m
))
415 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
416 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
417 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
418 * went to zero and all fds to it are closed.
420 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
423 * Note that we create the new event source first here, before releasing the old one. This should optimize
424 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
426 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
427 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
429 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
430 * O_CREATE or by rename() */
432 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
433 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
434 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
437 return log_error_errno(r
, "Failed to create timezone change event source: %m");
439 /* Schedule this slightly earlier than the .timer event sources */
440 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
442 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
444 sd_event_source_unref(m
->timezone_change_event_source
);
445 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
450 static int enable_special_signals(Manager
*m
) {
451 _cleanup_close_
int fd
= -1;
455 if (MANAGER_IS_TEST_RUN(m
))
458 /* Enable that we get SIGINT on control-alt-del. In containers
459 * this will fail with EPERM (older) or EINVAL (newer), so
461 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
462 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
464 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
466 /* Support systems without virtual console */
468 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
470 /* Enable that we get SIGWINCH on kbrequest */
471 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
472 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
478 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
480 static int manager_setup_signals(Manager
*m
) {
481 struct sigaction sa
= {
482 .sa_handler
= SIG_DFL
,
483 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
490 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
492 /* We make liberal use of realtime signals here. On
493 * Linux/glibc we have 30 of them (with the exception of Linux
494 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
497 assert_se(sigemptyset(&mask
) == 0);
498 sigset_add_many(&mask
,
499 SIGCHLD
, /* Child died */
500 SIGTERM
, /* Reexecute daemon */
501 SIGHUP
, /* Reload configuration */
502 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
503 SIGUSR2
, /* systemd: dump status */
504 SIGINT
, /* Kernel sends us this on control-alt-del */
505 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
506 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
508 SIGRTMIN
+0, /* systemd: start default.target */
509 SIGRTMIN
+1, /* systemd: isolate rescue.target */
510 SIGRTMIN
+2, /* systemd: isolate emergency.target */
511 SIGRTMIN
+3, /* systemd: start halt.target */
512 SIGRTMIN
+4, /* systemd: start poweroff.target */
513 SIGRTMIN
+5, /* systemd: start reboot.target */
514 SIGRTMIN
+6, /* systemd: start kexec.target */
516 /* ... space for more special targets ... */
518 SIGRTMIN
+13, /* systemd: Immediate halt */
519 SIGRTMIN
+14, /* systemd: Immediate poweroff */
520 SIGRTMIN
+15, /* systemd: Immediate reboot */
521 SIGRTMIN
+16, /* systemd: Immediate kexec */
523 /* ... space for more immediate system state changes ... */
525 SIGRTMIN
+20, /* systemd: enable status messages */
526 SIGRTMIN
+21, /* systemd: disable status messages */
527 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
528 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
529 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
531 /* .. one free signal here ... */
533 /* Apparently Linux on hppa had fewer RT signals until v3.18,
534 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
535 * see commit v3.17-7614-g1f25df2eff.
537 * We cannot unconditionally make use of those signals here,
538 * so let's use a runtime check. Since these commands are
539 * accessible by different means and only really a safety
540 * net, the missing functionality on hppa shouldn't matter.
543 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
544 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
545 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
546 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
548 /* ... one free signal here SIGRTMIN+30 ... */
550 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
552 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
553 if (m
->signal_fd
< 0)
556 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
560 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
562 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
563 * notify processing can still figure out to which process/service a message belongs, before we reap the
564 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
565 * status information before detecting that there's no process in a cgroup. */
566 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
570 if (MANAGER_IS_SYSTEM(m
))
571 return enable_special_signals(m
);
576 static char** sanitize_environment(char **l
) {
578 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
599 /* Let's order the environment alphabetically, just to make it pretty */
605 int manager_default_environment(Manager
*m
) {
608 m
->transient_environment
= strv_free(m
->transient_environment
);
610 if (MANAGER_IS_SYSTEM(m
)) {
611 /* The system manager always starts with a clean
612 * environment for its children. It does not import
613 * the kernel's or the parents' exported variables.
615 * The initial passed environment is untouched to keep
616 * /proc/self/environ valid; it is used for tagging
617 * the init process inside containers. */
618 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
620 /* Import locale variables LC_*= from configuration */
621 (void) locale_setup(&m
->transient_environment
);
623 /* The user manager passes its own environment
624 * along to its children. */
625 m
->transient_environment
= strv_copy(environ
);
627 if (!m
->transient_environment
)
630 sanitize_environment(m
->transient_environment
);
635 static int manager_setup_prefix(Manager
*m
) {
641 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
642 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
643 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
644 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
645 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
646 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
649 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
650 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
651 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
652 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
653 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
654 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
657 const struct table_entry
*p
;
663 if (MANAGER_IS_SYSTEM(m
))
668 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
669 r
= sd_path_home(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
677 static void manager_free_unit_name_maps(Manager
*m
) {
678 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
679 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
680 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
681 m
->unit_cache_mtime
= 0;
684 static int manager_setup_run_queue(Manager
*m
) {
688 assert(!m
->run_queue_event_source
);
690 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
694 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
698 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
702 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
707 static int manager_setup_sigchld_event_source(Manager
*m
) {
711 assert(!m
->sigchld_event_source
);
713 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
717 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
721 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
725 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
730 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
731 _cleanup_(manager_freep
) Manager
*m
= NULL
;
735 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
742 .unit_file_scope
= scope
,
743 .objective
= _MANAGER_OBJECTIVE_INVALID
,
745 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
747 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
748 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
749 .default_tasks_accounting
= true,
750 .default_tasks_max
= UINT64_MAX
,
751 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
752 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
753 .default_restart_usec
= DEFAULT_RESTART_USEC
,
755 .original_log_level
= -1,
756 .original_log_target
= _LOG_TARGET_INVALID
,
759 .cgroups_agent_fd
= -1,
761 .time_change_fd
= -1,
762 .user_lookup_fds
= { -1, -1 },
763 .private_listen_fd
= -1,
765 .cgroup_inotify_fd
= -1,
766 .pin_cgroupfs_fd
= -1,
767 .ask_password_inotify_fd
= -1,
768 .idle_pipe
= { -1, -1, -1, -1},
770 /* start as id #1, so that we can leave #0 around as "null-like" value */
773 .have_ask_password
= -EINVAL
, /* we don't know */
775 .test_run_flags
= test_run_flags
,
777 .default_oom_policy
= OOM_STOP
,
781 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
782 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
783 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
784 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
787 /* Prepare log fields we can use for structured logging */
788 if (MANAGER_IS_SYSTEM(m
)) {
789 m
->unit_log_field
= "UNIT=";
790 m
->unit_log_format_string
= "UNIT=%s";
792 m
->invocation_log_field
= "INVOCATION_ID=";
793 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
795 m
->unit_log_field
= "USER_UNIT=";
796 m
->unit_log_format_string
= "USER_UNIT=%s";
798 m
->invocation_log_field
= "USER_INVOCATION_ID=";
799 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
802 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
803 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
805 r
= manager_default_environment(m
);
809 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
813 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
817 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
821 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
825 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
829 r
= manager_setup_prefix(m
);
833 r
= sd_event_default(&m
->event
);
837 r
= manager_setup_run_queue(m
);
841 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
842 m
->cgroup_root
= strdup("");
846 r
= manager_setup_signals(m
);
850 r
= manager_setup_cgroup(m
);
854 r
= manager_setup_time_change(m
);
858 r
= manager_read_timezone_stat(m
);
862 (void) manager_setup_timezone_change(m
);
864 r
= manager_setup_sigchld_event_source(m
);
869 if (MANAGER_IS_SYSTEM(m
) && test_run_flags
== 0) {
870 r
= mkdir_label("/run/systemd/units", 0755);
871 if (r
< 0 && r
!= -EEXIST
)
877 dir_is_empty("/usr") > 0;
879 /* Note that we do not set up the notify fd here. We do that after deserialization,
880 * since they might have gotten serialized across the reexec. */
887 static int manager_setup_notify(Manager
*m
) {
890 if (MANAGER_IS_TEST_RUN(m
))
893 if (m
->notify_fd
< 0) {
894 _cleanup_close_
int fd
= -1;
895 union sockaddr_union sa
= {};
898 /* First free all secondary fields */
899 m
->notify_socket
= mfree(m
->notify_socket
);
900 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
902 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
904 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
906 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
908 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
909 if (!m
->notify_socket
)
912 salen
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
914 return log_error_errno(salen
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", m
->notify_socket
);
916 (void) mkdir_parents_label(m
->notify_socket
, 0755);
917 (void) sockaddr_un_unlink(&sa
.un
);
919 r
= bind(fd
, &sa
.sa
, salen
);
921 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
923 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
925 return log_error_errno(r
, "SO_PASSCRED failed: %m");
927 m
->notify_fd
= TAKE_FD(fd
);
929 log_debug("Using notification socket %s", m
->notify_socket
);
932 if (!m
->notify_event_source
) {
933 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
935 return log_error_errno(r
, "Failed to allocate notify event source: %m");
937 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
938 * service an exit message belongs. */
939 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
941 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
943 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
949 static int manager_setup_cgroups_agent(Manager
*m
) {
951 static const union sockaddr_union sa
= {
952 .un
.sun_family
= AF_UNIX
,
953 .un
.sun_path
= "/run/systemd/cgroups-agent",
957 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
958 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
959 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
960 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
961 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
962 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
963 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
964 * we thus won't lose messages.
966 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
967 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
968 * bus for these messages. */
970 if (MANAGER_IS_TEST_RUN(m
))
973 if (!MANAGER_IS_SYSTEM(m
))
976 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
978 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
979 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
982 if (m
->cgroups_agent_fd
< 0) {
983 _cleanup_close_
int fd
= -1;
985 /* First free all secondary fields */
986 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
988 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
990 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
992 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
994 (void) sockaddr_un_unlink(&sa
.un
);
996 /* Only allow root to connect to this socket */
998 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1000 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1002 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1005 if (!m
->cgroups_agent_event_source
) {
1006 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1008 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1010 /* Process cgroups notifications early. Note that when the agent notification is received
1011 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1012 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1013 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1015 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1017 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1023 static int manager_setup_user_lookup_fd(Manager
*m
) {
1028 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1029 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1030 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1031 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1032 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1033 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1034 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1035 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1038 * You might wonder why we need a communication channel for this that is independent of the usual notification
1039 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1040 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1041 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1043 * Note that this function is called under two circumstances: when we first initialize (in which case we
1044 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1045 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1047 if (m
->user_lookup_fds
[0] < 0) {
1049 /* Free all secondary fields */
1050 safe_close_pair(m
->user_lookup_fds
);
1051 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1053 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1054 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1056 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1059 if (!m
->user_lookup_event_source
) {
1060 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1062 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1064 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1066 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1068 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1070 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1076 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1082 while ((u
= m
->cleanup_queue
)) {
1083 assert(u
->in_cleanup_queue
);
1093 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1094 GC_OFFSET_UNSURE
, /* No clue */
1095 GC_OFFSET_GOOD
, /* We still need this unit */
1096 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1100 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1105 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1107 /* Recursively mark referenced units as GOOD as well */
1108 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1109 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1110 unit_gc_mark_good(other
, gc_marker
);
1113 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1121 if (IN_SET(u
->gc_marker
- gc_marker
,
1122 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1125 if (u
->in_cleanup_queue
)
1128 if (!unit_may_gc(u
))
1131 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1135 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1136 unit_gc_sweep(other
, gc_marker
);
1138 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1141 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1145 if (u
->refs_by_target
) {
1148 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1149 unit_gc_sweep(ref
->source
, gc_marker
);
1151 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1154 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1162 /* We were unable to find anything out about this entry, so
1163 * let's investigate it later */
1164 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1165 unit_add_to_gc_queue(u
);
1169 /* We definitely know that this one is not useful anymore, so
1170 * let's mark it for deletion */
1171 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1172 unit_add_to_cleanup_queue(u
);
1176 unit_gc_mark_good(u
, gc_marker
);
1179 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1180 unsigned n
= 0, gc_marker
;
1185 /* log_debug("Running GC..."); */
1187 m
->gc_marker
+= _GC_OFFSET_MAX
;
1188 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1191 gc_marker
= m
->gc_marker
;
1193 while ((u
= m
->gc_unit_queue
)) {
1194 assert(u
->in_gc_queue
);
1196 unit_gc_sweep(u
, gc_marker
);
1198 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1199 u
->in_gc_queue
= false;
1203 if (IN_SET(u
->gc_marker
- gc_marker
,
1204 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1206 log_unit_debug(u
, "Collecting.");
1207 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1208 unit_add_to_cleanup_queue(u
);
1215 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1221 while ((j
= m
->gc_job_queue
)) {
1222 assert(j
->in_gc_queue
);
1224 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1225 j
->in_gc_queue
= false;
1232 log_unit_debug(j
->unit
, "Collecting job.");
1233 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1239 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1246 while ((u
= m
->stop_when_unneeded_queue
)) {
1247 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1248 assert(m
->stop_when_unneeded_queue
);
1250 assert(u
->in_stop_when_unneeded_queue
);
1251 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1252 u
->in_stop_when_unneeded_queue
= false;
1256 if (!unit_is_unneeded(u
))
1259 log_unit_debug(u
, "Unit is not needed anymore.");
1261 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1262 * service being unnecessary after a while. */
1264 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1265 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1269 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1270 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1272 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1278 static void manager_clear_jobs_and_units(Manager
*m
) {
1283 while ((u
= hashmap_first(m
->units
)))
1286 manager_dispatch_cleanup_queue(m
);
1288 assert(!m
->load_queue
);
1289 assert(prioq_isempty(m
->run_queue
));
1290 assert(!m
->dbus_unit_queue
);
1291 assert(!m
->dbus_job_queue
);
1292 assert(!m
->cleanup_queue
);
1293 assert(!m
->gc_unit_queue
);
1294 assert(!m
->gc_job_queue
);
1295 assert(!m
->stop_when_unneeded_queue
);
1297 assert(hashmap_isempty(m
->jobs
));
1298 assert(hashmap_isempty(m
->units
));
1300 m
->n_on_console
= 0;
1301 m
->n_running_jobs
= 0;
1302 m
->n_installed_jobs
= 0;
1303 m
->n_failed_jobs
= 0;
1306 Manager
* manager_free(Manager
*m
) {
1307 ExecDirectoryType dt
;
1313 manager_clear_jobs_and_units(m
);
1315 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1316 if (unit_vtable
[c
]->shutdown
)
1317 unit_vtable
[c
]->shutdown(m
);
1319 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1320 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1322 lookup_paths_flush_generator(&m
->lookup_paths
);
1326 exec_runtime_vacuum(m
);
1327 hashmap_free(m
->exec_runtime_by_id
);
1329 dynamic_user_vacuum(m
, false);
1330 hashmap_free(m
->dynamic_users
);
1332 hashmap_free(m
->units
);
1333 hashmap_free(m
->units_by_invocation_id
);
1334 hashmap_free(m
->jobs
);
1335 hashmap_free(m
->watch_pids
);
1336 hashmap_free(m
->watch_bus
);
1338 prioq_free(m
->run_queue
);
1340 set_free(m
->startup_units
);
1341 set_free(m
->failed_units
);
1343 sd_event_source_unref(m
->signal_event_source
);
1344 sd_event_source_unref(m
->sigchld_event_source
);
1345 sd_event_source_unref(m
->notify_event_source
);
1346 sd_event_source_unref(m
->cgroups_agent_event_source
);
1347 sd_event_source_unref(m
->time_change_event_source
);
1348 sd_event_source_unref(m
->timezone_change_event_source
);
1349 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1350 sd_event_source_unref(m
->run_queue_event_source
);
1351 sd_event_source_unref(m
->user_lookup_event_source
);
1352 sd_event_source_unref(m
->sync_bus_names_event_source
);
1354 safe_close(m
->signal_fd
);
1355 safe_close(m
->notify_fd
);
1356 safe_close(m
->cgroups_agent_fd
);
1357 safe_close(m
->time_change_fd
);
1358 safe_close_pair(m
->user_lookup_fds
);
1360 manager_close_ask_password(m
);
1362 manager_close_idle_pipe(m
);
1364 sd_event_unref(m
->event
);
1366 free(m
->notify_socket
);
1368 lookup_paths_free(&m
->lookup_paths
);
1369 strv_free(m
->transient_environment
);
1370 strv_free(m
->client_environment
);
1372 hashmap_free(m
->cgroup_unit
);
1373 manager_free_unit_name_maps(m
);
1375 free(m
->switch_root
);
1376 free(m
->switch_root_init
);
1378 rlimit_free_all(m
->rlimit
);
1380 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1381 hashmap_free(m
->units_requiring_mounts_for
);
1383 hashmap_free(m
->uid_refs
);
1384 hashmap_free(m
->gid_refs
);
1386 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1387 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1392 static void manager_enumerate_perpetual(Manager
*m
) {
1397 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1400 /* Let's ask every type to load all units from disk/kernel that it might know */
1401 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1402 if (!unit_type_supported(c
)) {
1403 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1407 if (unit_vtable
[c
]->enumerate_perpetual
)
1408 unit_vtable
[c
]->enumerate_perpetual(m
);
1412 static void manager_enumerate(Manager
*m
) {
1417 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1420 /* Let's ask every type to load all units from disk/kernel that it might know */
1421 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1422 if (!unit_type_supported(c
)) {
1423 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1427 if (unit_vtable
[c
]->enumerate
)
1428 unit_vtable
[c
]->enumerate(m
);
1431 manager_dispatch_load_queue(m
);
1434 static void manager_coldplug(Manager
*m
) {
1442 log_debug("Invoking unit coldplug() handlers…");
1444 /* Let's place the units back into their deserialized state */
1445 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1447 /* ignore aliases */
1451 r
= unit_coldplug(u
);
1453 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1457 static void manager_catchup(Manager
*m
) {
1464 log_debug("Invoking unit catchup() handlers…");
1466 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1467 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1469 /* ignore aliases */
1477 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1483 HASHMAP_FOREACH(u
, m
->units
, i
) {
1485 if (fdset_size(fds
) <= 0)
1488 if (!UNIT_VTABLE(u
)->distribute_fds
)
1491 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1495 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1500 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1501 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1502 * rather than the current one. */
1504 if (MANAGER_IS_TEST_RUN(m
))
1507 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1510 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1513 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1516 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1522 static void manager_setup_bus(Manager
*m
) {
1525 /* Let's set up our private bus connection now, unconditionally */
1526 (void) bus_init_private(m
);
1528 /* If we are in --user mode also connect to the system bus now */
1529 if (MANAGER_IS_USER(m
))
1530 (void) bus_init_system(m
);
1532 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1533 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1534 (void) bus_init_api(m
);
1536 if (MANAGER_IS_SYSTEM(m
))
1537 (void) bus_init_system(m
);
1541 static void manager_preset_all(Manager
*m
) {
1546 if (m
->first_boot
<= 0)
1549 if (!MANAGER_IS_SYSTEM(m
))
1552 if (MANAGER_IS_TEST_RUN(m
))
1555 /* If this is the first boot, and we are in the host system, then preset everything */
1556 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1558 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1559 "Failed to populate /etc with preset unit settings, ignoring: %m");
1561 log_info("Populated /etc with preset unit settings.");
1564 static void manager_vacuum(Manager
*m
) {
1567 /* Release any dynamic users no longer referenced */
1568 dynamic_user_vacuum(m
, true);
1570 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1571 manager_vacuum_uid_refs(m
);
1572 manager_vacuum_gid_refs(m
);
1574 /* Release any runtimes no longer referenced */
1575 exec_runtime_vacuum(m
);
1578 static void manager_ready(Manager
*m
) {
1581 /* After having loaded everything, do the final round of catching up with what might have changed */
1583 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1585 /* It might be safe to log to the journal now and connect to dbus */
1586 manager_recheck_journal(m
);
1587 manager_recheck_dbus(m
);
1589 /* Sync current state of bus names with our set of listening units */
1590 (void) manager_enqueue_sync_bus_names(m
);
1592 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1595 m
->honor_device_enumeration
= true;
1598 static Manager
* manager_reloading_start(Manager
*m
) {
1602 static void manager_reloading_stopp(Manager
**m
) {
1604 assert((*m
)->n_reloading
> 0);
1605 (*m
)->n_reloading
--;
1609 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1614 /* If we are running in test mode, we still want to run the generators,
1615 * but we should not touch the real generator directories. */
1616 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1617 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1620 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1622 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1623 r
= manager_run_environment_generators(m
);
1625 r
= manager_run_generators(m
);
1626 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1630 manager_preset_all(m
);
1632 r
= lookup_paths_reduce(&m
->lookup_paths
);
1634 log_warning_errno(r
, "Failed to reduce unit file paths, ignoring: %m");
1637 /* This block is (optionally) done with the reloading counter bumped */
1638 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1640 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1641 * counter here already */
1643 reloading
= manager_reloading_start(m
);
1645 /* First, enumerate what we can from all config files */
1646 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1647 manager_enumerate_perpetual(m
);
1648 manager_enumerate(m
);
1649 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1651 /* Second, deserialize if there is something to deserialize */
1652 if (serialization
) {
1653 r
= manager_deserialize(m
, serialization
, fds
);
1655 return log_error_errno(r
, "Deserialization failed: %m");
1658 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1659 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1661 manager_distribute_fds(m
, fds
);
1663 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1664 r
= manager_setup_notify(m
);
1666 /* No sense to continue without notifications, our children would fail anyway. */
1669 r
= manager_setup_cgroups_agent(m
);
1671 /* Likewise, no sense to continue without empty cgroup notifications. */
1674 r
= manager_setup_user_lookup_fd(m
);
1676 /* This shouldn't fail, except if things are really broken. */
1679 /* Connect to the bus if we are good for it */
1680 manager_setup_bus(m
);
1682 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1683 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1685 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1686 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1688 /* Third, fire things up! */
1689 manager_coldplug(m
);
1691 /* Clean up runtime objects */
1695 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1696 * reload is finished */
1697 m
->send_reloading_done
= true;
1705 int manager_add_job(
1711 sd_bus_error
*error
,
1718 assert(type
< _JOB_TYPE_MAX
);
1720 assert(mode
< _JOB_MODE_MAX
);
1722 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1723 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1725 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1726 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1728 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1730 type
= job_type_collapse(type
, unit
);
1732 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1736 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1737 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1738 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1742 if (mode
== JOB_ISOLATE
) {
1743 r
= transaction_add_isolate_jobs(tr
, m
);
1748 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1752 log_unit_debug(unit
,
1753 "Enqueued job %s/%s as %u", unit
->id
,
1754 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1757 *ret
= tr
->anchor_job
;
1759 transaction_free(tr
);
1763 transaction_abort(tr
);
1764 transaction_free(tr
);
1768 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1769 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1773 assert(type
< _JOB_TYPE_MAX
);
1775 assert(mode
< _JOB_MODE_MAX
);
1777 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1782 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1785 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1786 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1790 assert(type
< _JOB_TYPE_MAX
);
1792 assert(mode
< _JOB_MODE_MAX
);
1794 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1796 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1801 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1807 assert(mode
< _JOB_MODE_MAX
);
1808 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1810 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1814 /* We need an anchor job */
1815 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1819 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1820 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1822 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1826 transaction_free(tr
);
1830 transaction_abort(tr
);
1831 transaction_free(tr
);
1835 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1838 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1841 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1845 return hashmap_get(m
->units
, name
);
1848 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1853 static const UnitDependency deps
[] = {
1862 while ((u
= m
->target_deps_queue
)) {
1863 assert(u
->in_target_deps_queue
);
1865 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1866 u
->in_target_deps_queue
= false;
1868 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1873 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1874 r
= unit_add_default_target_dependency(u
, target
);
1884 unsigned manager_dispatch_load_queue(Manager
*m
) {
1890 /* Make sure we are not run recursively */
1891 if (m
->dispatching_load_queue
)
1894 m
->dispatching_load_queue
= true;
1896 /* Dispatches the load queue. Takes a unit from the queue and
1897 * tries to load its data until the queue is empty */
1899 while ((u
= m
->load_queue
)) {
1900 assert(u
->in_load_queue
);
1906 m
->dispatching_load_queue
= false;
1908 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1909 * should be loaded and have aliases resolved */
1910 (void) manager_dispatch_target_deps_queue(m
);
1915 int manager_load_unit_prepare(
1922 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1928 assert(name
|| path
);
1931 /* This will prepare the unit for loading, but not actually
1932 * load anything from disk. */
1934 if (path
&& !is_path(path
))
1935 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1938 name
= basename(path
);
1940 t
= unit_name_to_type(name
);
1942 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1943 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1944 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1946 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1949 ret
= manager_get_unit(m
, name
);
1955 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1960 ret
->fragment_path
= strdup(path
);
1961 if (!ret
->fragment_path
)
1965 r
= unit_add_name(ret
, name
);
1969 unit_add_to_load_queue(ret
);
1970 unit_add_to_dbus_queue(ret
);
1971 unit_add_to_gc_queue(ret
);
1979 int manager_load_unit(
1991 /* This will load the service information files, but not actually
1992 * start any services or anything. */
1994 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1998 manager_dispatch_load_queue(m
);
2000 *_ret
= unit_follow_merge(*_ret
);
2004 int manager_load_startable_unit_or_warn(
2010 /* Load a unit, make sure it loaded fully and is not masked. */
2012 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2016 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2018 return log_error_errno(r
, "Failed to load %s %s: %s",
2019 name
? "unit" : "unit file", name
?: path
,
2020 bus_error_message(&error
, r
));
2022 r
= bus_unit_validate_load_state(unit
, &error
);
2024 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2030 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2037 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2038 job_dump(j
, f
, prefix
);
2041 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2049 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2051 unit_dump(u
, f
, prefix
);
2054 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2060 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2061 const dual_timestamp
*t
= m
->timestamps
+ q
;
2062 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2064 if (dual_timestamp_is_set(t
))
2065 fprintf(f
, "%sTimestamp %s: %s\n",
2067 manager_timestamp_to_string(q
),
2068 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2069 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2072 manager_dump_units(m
, f
, prefix
);
2073 manager_dump_jobs(m
, f
, prefix
);
2076 int manager_get_dump_string(Manager
*m
, char **ret
) {
2077 _cleanup_free_
char *dump
= NULL
;
2078 _cleanup_fclose_
FILE *f
= NULL
;
2085 f
= open_memstream_unlocked(&dump
, &size
);
2089 manager_dump(m
, f
, NULL
);
2091 r
= fflush_and_check(f
);
2097 *ret
= TAKE_PTR(dump
);
2102 void manager_clear_jobs(Manager
*m
) {
2107 while ((j
= hashmap_first(m
->jobs
)))
2108 /* No need to recurse. We're cancelling all jobs. */
2109 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2112 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2115 /* First let's drop the unit keyed as "pid". */
2116 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2118 /* Then, let's also drop the array keyed by -pid. */
2119 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2122 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2123 Manager
*m
= userdata
;
2129 while ((j
= prioq_peek(m
->run_queue
))) {
2130 assert(j
->installed
);
2131 assert(j
->in_run_queue
);
2133 (void) job_run_and_invalidate(j
);
2136 if (m
->n_running_jobs
> 0)
2137 manager_watch_jobs_in_progress(m
);
2139 if (m
->n_on_console
> 0)
2140 manager_watch_idle_pipe(m
);
2145 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2146 unsigned n
= 0, budget
;
2152 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2153 * as we can. There's no point in throttling generation of signals in that case. */
2154 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2155 budget
= (unsigned) -1; /* infinite budget in this case */
2157 /* Anything to do at all? */
2158 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2161 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2162 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2163 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2166 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2167 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2168 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2169 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2170 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2171 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2172 * connections it will be counted five times. This difference in counting ("references"
2173 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2174 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2175 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2176 * currently chosen much higher than the "budget". */
2177 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2180 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2182 assert(u
->in_dbus_queue
);
2184 bus_unit_send_change_signal(u
);
2187 if (budget
!= (unsigned) -1)
2191 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2192 assert(j
->in_dbus_queue
);
2194 bus_job_send_change_signal(j
);
2197 if (budget
!= (unsigned) -1)
2201 if (m
->send_reloading_done
) {
2202 m
->send_reloading_done
= false;
2203 bus_manager_send_reloading(m
, false);
2207 if (m
->pending_reload_message
) {
2208 bus_send_pending_reload_message(m
);
2215 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2216 Manager
*m
= userdata
;
2220 n
= recv(fd
, buf
, sizeof(buf
), 0);
2222 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2224 log_error("Got zero-length cgroups agent message, ignoring.");
2227 if ((size_t) n
>= sizeof(buf
)) {
2228 log_error("Got overly long cgroups agent message, ignoring.");
2232 if (memchr(buf
, 0, n
)) {
2233 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2238 manager_notify_cgroup_empty(m
, buf
);
2239 (void) bus_forward_agent_released(m
, buf
);
2244 static void manager_invoke_notify_message(
2247 const struct ucred
*ucred
,
2256 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2258 u
->notifygen
= m
->notifygen
;
2260 if (UNIT_VTABLE(u
)->notify_message
) {
2261 _cleanup_strv_free_
char **tags
= NULL
;
2263 tags
= strv_split(buf
, NEWLINE
);
2269 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2271 } else if (DEBUG_LOGGING
) {
2272 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2274 x
= ellipsize(buf
, 20, 90);
2278 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2282 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2284 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2285 Manager
*m
= userdata
;
2286 char buf
[NOTIFY_BUFFER_MAX
+1];
2287 struct iovec iovec
= {
2289 .iov_len
= sizeof(buf
)-1,
2292 struct cmsghdr cmsghdr
;
2293 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2294 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2296 struct msghdr msghdr
= {
2299 .msg_control
= &control
,
2300 .msg_controllen
= sizeof(control
),
2303 struct cmsghdr
*cmsg
;
2304 struct ucred
*ucred
= NULL
;
2305 _cleanup_free_ Unit
**array_copy
= NULL
;
2306 Unit
*u1
, *u2
, **array
;
2307 int r
, *fd_array
= NULL
;
2313 assert(m
->notify_fd
== fd
);
2315 if (revents
!= EPOLLIN
) {
2316 log_warning("Got unexpected poll event for notify fd.");
2320 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2322 if (IN_SET(errno
, EAGAIN
, EINTR
))
2323 return 0; /* Spurious wakeup, try again */
2325 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2326 * won't take notification messages anymore, but that's still better than busy looping around this:
2327 * being woken up over and over again but being unable to actually read the message off the socket. */
2328 return log_error_errno(errno
, "Failed to receive notification message: %m");
2331 CMSG_FOREACH(cmsg
, &msghdr
) {
2332 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2334 fd_array
= (int*) CMSG_DATA(cmsg
);
2335 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2337 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2338 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2339 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2341 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2348 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2350 close_many(fd_array
, n_fds
);
2356 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2357 log_warning("Received notify message without valid credentials. Ignoring.");
2361 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2362 log_warning("Received notify message exceeded maximum size. Ignoring.");
2366 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2367 * trailing NUL byte in the message, but don't expect it. */
2368 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2369 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2373 /* Make sure it's NUL-terminated. */
2376 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2379 /* Notify every unit that might be interested, which might be multiple. */
2380 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2381 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2382 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2389 array_copy
= newdup(Unit
*, array
, k
+1);
2393 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2394 * make sure we only invoke each unit's handler once. */
2396 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2400 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2404 for (size_t i
= 0; array_copy
[i
]; i
++) {
2405 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2410 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2412 if (fdset_size(fds
) > 0)
2413 log_warning("Got extra auxiliary fds with notification message, closing them.");
2418 static void manager_invoke_sigchld_event(
2421 const siginfo_t
*si
) {
2427 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2428 if (u
->sigchldgen
== m
->sigchldgen
)
2430 u
->sigchldgen
= m
->sigchldgen
;
2432 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2433 unit_unwatch_pid(u
, si
->si_pid
);
2435 if (UNIT_VTABLE(u
)->sigchld_event
)
2436 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2439 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2440 Manager
*m
= userdata
;
2447 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2448 * while it is a zombie. */
2450 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2452 if (errno
!= ECHILD
)
2453 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2461 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2462 _cleanup_free_ Unit
**array_copy
= NULL
;
2463 _cleanup_free_
char *name
= NULL
;
2464 Unit
*u1
, *u2
, **array
;
2466 (void) get_process_comm(si
.si_pid
, &name
);
2468 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2469 si
.si_pid
, strna(name
),
2470 sigchld_code_to_string(si
.si_code
),
2472 strna(si
.si_code
== CLD_EXITED
2473 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2474 : signal_to_string(si
.si_status
)));
2476 /* Increase the generation counter used for filtering out duplicate unit invocations */
2479 /* And now figure out the unit this belongs to, it might be multiple... */
2480 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2481 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2482 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2486 /* Count how many entries the array has */
2490 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2491 array_copy
= newdup(Unit
*, array
, n
+1);
2496 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2497 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2498 * each iteration. */
2500 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2501 * We only do this for the cgroup the PID belonged to. */
2502 (void) unit_check_oom(u1
);
2504 manager_invoke_sigchld_event(m
, u1
, &si
);
2507 manager_invoke_sigchld_event(m
, u2
, &si
);
2509 for (size_t i
= 0; array_copy
[i
]; i
++)
2510 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2513 /* And now, we actually reap the zombie. */
2514 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2515 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2522 /* All children processed for now, turn off event source */
2524 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2526 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2531 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2532 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2535 log_debug("Activating special unit %s", name
);
2537 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2539 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2542 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2543 /* If the user presses C-A-D more than
2544 * 7 times within 2s, we reboot/shutdown immediately,
2545 * unless it was disabled in system.conf */
2547 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2548 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2550 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2551 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2554 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2555 Manager
*m
= userdata
;
2557 struct signalfd_siginfo sfsi
;
2561 assert(m
->signal_fd
== fd
);
2563 if (revents
!= EPOLLIN
) {
2564 log_warning("Got unexpected events from signal file descriptor.");
2568 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2569 if (n
!= sizeof(sfsi
)) {
2571 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2575 if (IN_SET(errno
, EINTR
, EAGAIN
))
2578 /* We return an error here, which will kill this handler,
2579 * to avoid a busy loop on read error. */
2580 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2583 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2584 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2585 ? LOG_DEBUG
: LOG_INFO
,
2588 switch (sfsi
.ssi_signo
) {
2591 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2593 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2598 if (MANAGER_IS_SYSTEM(m
)) {
2599 /* This is for compatibility with the original sysvinit */
2600 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2603 m
->objective
= MANAGER_REEXECUTE
;
2609 if (MANAGER_IS_SYSTEM(m
))
2610 manager_handle_ctrl_alt_del(m
);
2612 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2613 JOB_REPLACE_IRREVERSIBLY
);
2617 /* This is a nop on non-init */
2618 if (MANAGER_IS_SYSTEM(m
))
2619 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2624 /* This is a nop on non-init */
2625 if (MANAGER_IS_SYSTEM(m
))
2626 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2631 if (manager_dbus_is_running(m
, false)) {
2632 log_info("Trying to reconnect to bus...");
2634 (void) bus_init_api(m
);
2636 if (MANAGER_IS_SYSTEM(m
))
2637 (void) bus_init_system(m
);
2639 log_info("Starting D-Bus service...");
2640 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2646 _cleanup_free_
char *dump
= NULL
;
2648 r
= manager_get_dump_string(m
, &dump
);
2650 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2654 log_dump(LOG_INFO
, dump
);
2659 if (verify_run_space_and_log("Refusing to reload") < 0)
2662 m
->objective
= MANAGER_RELOAD
;
2667 /* Starting SIGRTMIN+0 */
2668 static const struct {
2671 } target_table
[] = {
2672 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2673 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2674 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2675 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2676 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2677 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2678 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2681 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2682 static const ManagerObjective objective_table
[] = {
2684 [1] = MANAGER_POWEROFF
,
2685 [2] = MANAGER_REBOOT
,
2686 [3] = MANAGER_KEXEC
,
2689 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2690 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2691 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2692 manager_start_target(m
, target_table
[idx
].target
,
2693 target_table
[idx
].mode
);
2697 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2698 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2699 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2703 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2706 manager_set_show_status(m
, SHOW_STATUS_YES
);
2710 manager_set_show_status(m
, SHOW_STATUS_NO
);
2714 manager_override_log_level(m
, LOG_DEBUG
);
2718 manager_restore_original_log_level(m
);
2722 if (MANAGER_IS_USER(m
)) {
2723 m
->objective
= MANAGER_EXIT
;
2727 /* This is a nop on init */
2731 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2732 manager_restore_original_log_target(m
);
2736 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2740 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2744 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2751 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2752 Manager
*m
= userdata
;
2757 assert(m
->time_change_fd
== fd
);
2759 log_struct(LOG_DEBUG
,
2760 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2761 LOG_MESSAGE("Time has been changed"));
2763 /* Restart the watch */
2764 (void) manager_setup_time_change(m
);
2766 HASHMAP_FOREACH(u
, m
->units
, i
)
2767 if (UNIT_VTABLE(u
)->time_change
)
2768 UNIT_VTABLE(u
)->time_change(u
);
2773 static int manager_dispatch_timezone_change(
2774 sd_event_source
*source
,
2775 const struct inotify_event
*e
,
2778 Manager
*m
= userdata
;
2785 log_debug("inotify event for /etc/localtime");
2787 changed
= manager_read_timezone_stat(m
);
2791 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2792 (void) manager_setup_timezone_change(m
);
2794 /* Read the new timezone */
2797 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2799 HASHMAP_FOREACH(u
, m
->units
, i
)
2800 if (UNIT_VTABLE(u
)->timezone_change
)
2801 UNIT_VTABLE(u
)->timezone_change(u
);
2806 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2807 Manager
*m
= userdata
;
2810 assert(m
->idle_pipe
[2] == fd
);
2812 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2813 * now turn off any further console output if there's at least one service that needs console access, so that
2814 * from now on our own output should not spill into that service's output anymore. After all, we support
2815 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2816 * exclusively without our interference. */
2817 m
->no_console_output
= m
->n_on_console
> 0;
2819 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2820 * by closing the pipes towards them, which is what they are waiting for. */
2821 manager_close_idle_pipe(m
);
2826 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2827 Manager
*m
= userdata
;
2834 manager_print_jobs_in_progress(m
);
2836 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2837 r
= sd_event_source_set_time(source
, next
);
2841 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2844 int manager_loop(Manager
*m
) {
2847 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
2850 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2852 manager_check_finished(m
);
2854 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2855 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2857 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2859 while (m
->objective
== MANAGER_OK
) {
2862 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2865 if (!ratelimit_below(&rl
)) {
2866 /* Yay, something is going seriously wrong, pause a little */
2867 log_warning("Looping too fast. Throttling execution a little.");
2871 if (manager_dispatch_load_queue(m
) > 0)
2874 if (manager_dispatch_gc_job_queue(m
) > 0)
2877 if (manager_dispatch_gc_unit_queue(m
) > 0)
2880 if (manager_dispatch_cleanup_queue(m
) > 0)
2883 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2886 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2889 if (manager_dispatch_dbus_queue(m
) > 0)
2892 /* Sleep for half the watchdog time */
2893 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2894 wait_usec
= m
->runtime_watchdog
/ 2;
2898 wait_usec
= USEC_INFINITY
;
2900 r
= sd_event_run(m
->event
, wait_usec
);
2902 return log_error_errno(r
, "Failed to run event loop: %m");
2905 return m
->objective
;
2908 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2909 _cleanup_free_
char *n
= NULL
;
2910 sd_id128_t invocation_id
;
2918 r
= unit_name_from_dbus_path(s
, &n
);
2922 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2923 * as invocation ID. */
2924 r
= sd_id128_from_string(n
, &invocation_id
);
2926 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2932 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2933 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2934 SD_ID128_FORMAT_VAL(invocation_id
));
2937 /* If this didn't work, we check if this is a unit name */
2938 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2939 _cleanup_free_
char *nn
= NULL
;
2942 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2943 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2946 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2954 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2964 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2968 r
= safe_atou(p
, &id
);
2972 j
= manager_get_job(m
, id
);
2981 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2984 _cleanup_free_
char *p
= NULL
;
2988 if (!MANAGER_IS_SYSTEM(m
))
2991 audit_fd
= get_audit_fd();
2995 /* Don't generate audit events if the service was already
2996 * started and we're just deserializing */
2997 if (MANAGER_IS_RELOADING(m
))
3000 if (u
->type
!= UNIT_SERVICE
)
3003 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3005 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3009 msg
= strjoina("unit=", p
);
3010 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3012 /* We aren't allowed to send audit messages?
3013 * Then let's not retry again. */
3016 log_warning_errno(errno
, "Failed to send audit message: %m");
3022 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3023 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3024 _cleanup_free_
char *message
= NULL
;
3025 _cleanup_close_
int fd
= -1;
3028 /* Don't generate plymouth events if the service was already
3029 * started and we're just deserializing */
3030 if (MANAGER_IS_RELOADING(m
))
3033 if (!MANAGER_IS_SYSTEM(m
))
3036 if (detect_container() > 0)
3039 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3042 /* We set SOCK_NONBLOCK here so that we rather drop the
3043 * message then wait for plymouth */
3044 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3046 log_error_errno(errno
, "socket() failed: %m");
3050 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3051 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3052 log_error_errno(errno
, "connect() failed: %m");
3056 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3062 if (write(fd
, message
, n
+ 1) != n
+ 1)
3063 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3064 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3067 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3073 fd
= open_serialization_fd("systemd-state");
3077 f
= fdopen(fd
, "w+");
3087 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3092 /* The following timestamps only apply to the host system, hence only serialize them there */
3094 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3095 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3096 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3097 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3100 int manager_serialize(
3104 bool switching_root
) {
3116 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3118 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3119 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3120 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3121 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3122 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3123 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3124 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3126 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3127 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3129 t
= show_status_to_string(m
->show_status
);
3131 (void) serialize_item(f
, "show-status", t
);
3133 if (m
->log_level_overridden
)
3134 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3135 if (m
->log_target_overridden
)
3136 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3138 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3139 _cleanup_free_
char *joined
= NULL
;
3141 if (!manager_timestamp_shall_serialize(q
))
3144 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3148 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3151 if (!switching_root
)
3152 (void) serialize_strv(f
, "env", m
->client_environment
);
3154 if (m
->notify_fd
>= 0) {
3155 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3159 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3162 if (m
->cgroups_agent_fd
>= 0) {
3163 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3168 if (m
->user_lookup_fds
[0] >= 0) {
3171 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3173 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3175 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3177 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3179 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3182 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3184 r
= dynamic_user_serialize(m
, f
, fds
);
3188 manager_serialize_uid_refs(m
, f
);
3189 manager_serialize_gid_refs(m
, f
);
3191 r
= exec_runtime_serialize(m
, f
, fds
);
3195 (void) fputc('\n', f
);
3197 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3205 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3210 r
= fflush_and_check(f
);
3212 return log_error_errno(r
, "Failed to flush serialization: %m");
3214 r
= bus_fdset_add_all(m
, fds
);
3216 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3221 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3225 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3229 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3232 r
= unit_deserialize(u
, f
, fds
);
3236 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3242 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3243 const char *unit_name
;
3247 _cleanup_free_
char *line
= NULL
;
3249 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3251 return log_error_errno(r
, "Failed to read serialization line: %m");
3255 unit_name
= strstrip(line
);
3257 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3261 r
= unit_deserialize_skip(f
);
3270 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3276 log_debug("Deserializing state...");
3278 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3279 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3281 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3284 _cleanup_free_
char *line
= NULL
;
3285 const char *val
, *l
;
3287 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3289 return log_error_errno(r
, "Failed to read serialization line: %m");
3294 if (isempty(l
)) /* end marker */
3297 if ((val
= startswith(l
, "current-job-id="))) {
3300 if (safe_atou32(val
, &id
) < 0)
3301 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3303 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3305 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3308 if (safe_atou32(val
, &n
) < 0)
3309 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3311 m
->n_installed_jobs
+= n
;
3313 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3316 if (safe_atou32(val
, &n
) < 0)
3317 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3319 m
->n_failed_jobs
+= n
;
3321 } else if ((val
= startswith(l
, "taint-usr="))) {
3324 b
= parse_boolean(val
);
3326 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3328 m
->taint_usr
= m
->taint_usr
|| b
;
3330 } else if ((val
= startswith(l
, "ready-sent="))) {
3333 b
= parse_boolean(val
);
3335 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3337 m
->ready_sent
= m
->ready_sent
|| b
;
3339 } else if ((val
= startswith(l
, "taint-logged="))) {
3342 b
= parse_boolean(val
);
3344 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3346 m
->taint_logged
= m
->taint_logged
|| b
;
3348 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3351 b
= parse_boolean(val
);
3353 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3355 m
->service_watchdogs
= b
;
3357 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3360 b
= parse_boolean(val
);
3362 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3364 m
->honor_device_enumeration
= b
;
3366 } else if ((val
= startswith(l
, "show-status="))) {
3369 s
= show_status_from_string(val
);
3371 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3373 manager_set_show_status(m
, s
);
3375 } else if ((val
= startswith(l
, "log-level-override="))) {
3378 level
= log_level_from_string(val
);
3380 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3382 manager_override_log_level(m
, level
);
3384 } else if ((val
= startswith(l
, "log-target-override="))) {
3387 target
= log_target_from_string(val
);
3389 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3391 manager_override_log_target(m
, target
);
3393 } else if (startswith(l
, "env=")) {
3394 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3396 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3398 } else if ((val
= startswith(l
, "notify-fd="))) {
3401 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3402 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3404 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3405 safe_close(m
->notify_fd
);
3406 m
->notify_fd
= fdset_remove(fds
, fd
);
3409 } else if ((val
= startswith(l
, "notify-socket="))) {
3410 r
= free_and_strdup(&m
->notify_socket
, val
);
3414 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3417 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3418 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3420 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3421 safe_close(m
->cgroups_agent_fd
);
3422 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3425 } else if ((val
= startswith(l
, "user-lookup="))) {
3428 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3429 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3431 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3432 safe_close_pair(m
->user_lookup_fds
);
3433 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3434 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3437 } else if ((val
= startswith(l
, "dynamic-user=")))
3438 dynamic_user_deserialize_one(m
, val
, fds
);
3439 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3440 manager_deserialize_uid_refs_one(m
, val
);
3441 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3442 manager_deserialize_gid_refs_one(m
, val
);
3443 else if ((val
= startswith(l
, "exec-runtime=")))
3444 exec_runtime_deserialize_one(m
, val
, fds
);
3445 else if ((val
= startswith(l
, "subscribed="))) {
3447 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3453 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3454 val
= startswith(l
, manager_timestamp_to_string(q
));
3458 val
= startswith(val
, "-timestamp=");
3463 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3464 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3465 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3466 log_notice("Unknown serialization item '%s', ignoring.", l
);
3470 return manager_deserialize_units(m
, f
, fds
);
3473 int manager_reload(Manager
*m
) {
3474 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3475 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3476 _cleanup_fclose_
FILE *f
= NULL
;
3481 r
= manager_open_serialization(m
, &f
);
3483 return log_error_errno(r
, "Failed to create serialization file: %m");
3489 /* We are officially in reload mode from here on. */
3490 reloading
= manager_reloading_start(m
);
3492 r
= manager_serialize(m
, f
, fds
, false);
3496 if (fseeko(f
, 0, SEEK_SET
) < 0)
3497 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3499 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3502 bus_manager_send_reloading(m
, true);
3504 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3505 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3508 manager_clear_jobs_and_units(m
);
3509 lookup_paths_flush_generator(&m
->lookup_paths
);
3510 lookup_paths_free(&m
->lookup_paths
);
3511 exec_runtime_vacuum(m
);
3512 dynamic_user_vacuum(m
, false);
3513 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3514 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3516 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3518 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3520 (void) manager_run_environment_generators(m
);
3521 (void) manager_run_generators(m
);
3523 r
= lookup_paths_reduce(&m
->lookup_paths
);
3525 log_warning_errno(r
, "Failed to reduce unit file paths, ignoring: %m");
3527 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3528 manager_free_unit_name_maps(m
);
3530 /* First, enumerate what we can from kernel and suchlike */
3531 manager_enumerate_perpetual(m
);
3532 manager_enumerate(m
);
3534 /* Second, deserialize our stored data */
3535 r
= manager_deserialize(m
, f
, fds
);
3537 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3539 /* We don't need the serialization anymore */
3542 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3543 (void) manager_setup_notify(m
);
3544 (void) manager_setup_cgroups_agent(m
);
3545 (void) manager_setup_user_lookup_fd(m
);
3547 /* Third, fire things up! */
3548 manager_coldplug(m
);
3550 /* Clean up runtime objects no longer referenced */
3553 /* Consider the reload process complete now. */
3554 assert(m
->n_reloading
> 0);
3557 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3558 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3559 * let's always set the flag here for safety. */
3560 m
->honor_device_enumeration
= true;
3564 m
->send_reloading_done
= true;
3568 void manager_reset_failed(Manager
*m
) {
3574 HASHMAP_FOREACH(u
, m
->units
, i
)
3575 unit_reset_failed(u
);
3578 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3584 /* Returns true if the unit is inactive or going down */
3585 u
= manager_get_unit(m
, name
);
3589 return unit_inactive_or_pending(u
);
3592 static void log_taint_string(Manager
*m
) {
3593 _cleanup_free_
char *taint
= NULL
;
3597 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3600 m
->taint_logged
= true; /* only check for taint once */
3602 taint
= manager_taint_string(m
);
3606 log_struct(LOG_NOTICE
,
3607 LOG_MESSAGE("System is tainted: %s", taint
),
3609 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3612 static void manager_notify_finished(Manager
*m
) {
3613 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3614 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3616 if (MANAGER_IS_TEST_RUN(m
))
3619 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3620 char ts
[FORMAT_TIMESPAN_MAX
];
3621 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3624 size_t size
= sizeof buf
;
3626 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3627 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3628 * negative values. */
3630 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3631 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3632 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3633 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3635 if (firmware_usec
> 0)
3636 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3637 if (loader_usec
> 0)
3638 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3640 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3642 /* The initrd case on bare-metal*/
3643 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3644 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3646 log_struct(LOG_INFO
,
3647 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3648 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3649 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3650 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3651 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3653 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3654 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3655 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3656 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3658 /* The initrd-less case on bare-metal*/
3660 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3663 log_struct(LOG_INFO
,
3664 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3665 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3666 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3667 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3669 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3670 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3671 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3674 /* The container and --user case */
3675 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3676 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3678 log_struct(LOG_INFO
,
3679 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3680 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3681 LOG_MESSAGE("Startup finished in %s.",
3682 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3685 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3688 m
->ready_sent
? "STATUS=Startup finished in %s."
3690 "STATUS=Startup finished in %s.",
3691 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3692 m
->ready_sent
= true;
3694 log_taint_string(m
);
3697 static void manager_send_ready(Manager
*m
) {
3700 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3701 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3704 m
->ready_sent
= true;
3708 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3711 static void manager_check_basic_target(Manager
*m
) {
3716 /* Small shortcut */
3717 if (m
->ready_sent
&& m
->taint_logged
)
3720 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3721 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3724 /* For user managers, send out READY=1 as soon as we reach basic.target */
3725 manager_send_ready(m
);
3727 /* Log the taint string as soon as we reach basic.target */
3728 log_taint_string(m
);
3731 void manager_check_finished(Manager
*m
) {
3734 if (MANAGER_IS_RELOADING(m
))
3737 /* Verify that we have entered the event loop already, and not left it again. */
3738 if (!MANAGER_IS_RUNNING(m
))
3741 manager_check_basic_target(m
);
3743 if (hashmap_size(m
->jobs
) > 0) {
3744 if (m
->jobs_in_progress_event_source
)
3745 /* Ignore any failure, this is only for feedback */
3746 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3751 manager_flip_auto_status(m
, false);
3753 /* Notify Type=idle units that we are done now */
3754 manager_close_idle_pipe(m
);
3756 /* Turn off confirm spawn now */
3757 m
->confirm_spawn
= NULL
;
3759 /* No need to update ask password status when we're going non-interactive */
3760 manager_close_ask_password(m
);
3762 /* This is no longer the first boot */
3763 manager_set_first_boot(m
, false);
3765 if (MANAGER_IS_FINISHED(m
))
3768 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3770 manager_notify_finished(m
);
3772 manager_invalidate_startup_units(m
);
3775 static bool generator_path_any(const char* const* paths
) {
3779 /* Optimize by skipping the whole process by not creating output directories
3780 * if no generators are found. */
3781 STRV_FOREACH(path
, (char**) paths
)
3782 if (access(*path
, F_OK
) == 0)
3784 else if (errno
!= ENOENT
)
3785 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3790 static const char *const system_env_generator_binary_paths
[] = {
3791 "/run/systemd/system-environment-generators",
3792 "/etc/systemd/system-environment-generators",
3793 "/usr/local/lib/systemd/system-environment-generators",
3794 SYSTEM_ENV_GENERATOR_PATH
,
3798 static const char *const user_env_generator_binary_paths
[] = {
3799 "/run/systemd/user-environment-generators",
3800 "/etc/systemd/user-environment-generators",
3801 "/usr/local/lib/systemd/user-environment-generators",
3802 USER_ENV_GENERATOR_PATH
,
3806 static int manager_run_environment_generators(Manager
*m
) {
3807 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3808 const char *const *paths
;
3810 [STDOUT_GENERATE
] = &tmp
,
3811 [STDOUT_COLLECT
] = &tmp
,
3812 [STDOUT_CONSUME
] = &m
->transient_environment
,
3816 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3819 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3821 if (!generator_path_any(paths
))
3824 RUN_WITH_UMASK(0022)
3825 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3826 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3830 static int manager_run_generators(Manager
*m
) {
3831 _cleanup_strv_free_
char **paths
= NULL
;
3832 const char *argv
[5];
3837 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3840 paths
= generator_binary_paths(m
->unit_file_scope
);
3844 if (!generator_path_any((const char* const*) paths
))
3847 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3849 log_error_errno(r
, "Failed to create generator directories: %m");
3853 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3854 argv
[1] = m
->lookup_paths
.generator
;
3855 argv
[2] = m
->lookup_paths
.generator_early
;
3856 argv
[3] = m
->lookup_paths
.generator_late
;
3859 RUN_WITH_UMASK(0022)
3860 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3861 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3866 lookup_paths_trim_generator(&m
->lookup_paths
);
3870 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3875 if (strv_isempty(plus
))
3878 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3882 sanitize_environment(a
);
3884 return strv_free_and_replace(m
->transient_environment
, a
);
3887 int manager_client_environment_modify(
3892 char **a
= NULL
, **b
= NULL
, **l
;
3896 if (strv_isempty(minus
) && strv_isempty(plus
))
3899 l
= m
->client_environment
;
3901 if (!strv_isempty(minus
)) {
3902 a
= strv_env_delete(l
, 1, minus
);
3909 if (!strv_isempty(plus
)) {
3910 b
= strv_env_merge(2, l
, plus
);
3919 if (m
->client_environment
!= l
)
3920 strv_free(m
->client_environment
);
3927 m
->client_environment
= sanitize_environment(l
);
3931 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3937 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3945 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3950 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3951 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3953 if (!default_rlimit
[i
])
3956 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3964 void manager_recheck_dbus(Manager
*m
) {
3967 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3968 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3969 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3970 * while in the user instance we can assume it's already there. */
3972 if (MANAGER_IS_RELOADING(m
))
3973 return; /* don't check while we are reloading… */
3975 if (manager_dbus_is_running(m
, false)) {
3976 (void) bus_init_api(m
);
3978 if (MANAGER_IS_SYSTEM(m
))
3979 (void) bus_init_system(m
);
3981 (void) bus_done_api(m
);
3983 if (MANAGER_IS_SYSTEM(m
))
3984 (void) bus_done_system(m
);
3988 static bool manager_journal_is_running(Manager
*m
) {
3993 if (MANAGER_IS_TEST_RUN(m
))
3996 /* If we are the user manager we can safely assume that the journal is up */
3997 if (!MANAGER_IS_SYSTEM(m
))
4000 /* Check that the socket is not only up, but in RUNNING state */
4001 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4004 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4007 /* Similar, check if the daemon itself is fully up, too */
4008 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4011 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4017 void manager_recheck_journal(Manager
*m
) {
4021 /* Don't bother with this unless we are in the special situation of being PID 1 */
4022 if (getpid_cached() != 1)
4025 /* Don't check this while we are reloading, things might still change */
4026 if (MANAGER_IS_RELOADING(m
))
4029 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4030 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4031 * an activation ourselves we can't fulfill. */
4032 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4036 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4038 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4040 if (!MANAGER_IS_SYSTEM(m
))
4043 if (m
->show_status
!= mode
)
4044 log_debug("%s showing of status.",
4045 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4046 m
->show_status
= mode
;
4048 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4049 (void) touch("/run/systemd/show-status");
4051 (void) unlink("/run/systemd/show-status");
4054 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4057 if (!MANAGER_IS_SYSTEM(m
))
4060 if (m
->no_console_output
)
4063 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4066 /* If we cannot find out the status properly, just proceed. */
4067 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4070 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4073 const char *manager_get_confirm_spawn(Manager
*m
) {
4074 static int last_errno
= 0;
4080 /* Here's the deal: we want to test the validity of the console but don't want
4081 * PID1 to go through the whole console process which might block. But we also
4082 * want to warn the user only once if something is wrong with the console so we
4083 * cannot do the sanity checks after spawning our children. So here we simply do
4084 * really basic tests to hopefully trap common errors.
4086 * If the console suddenly disappear at the time our children will really it
4087 * then they will simply fail to acquire it and a positive answer will be
4088 * assumed. New children will fallback to /dev/console though.
4090 * Note: TTYs are devices that can come and go any time, and frequently aren't
4091 * available yet during early boot (consider a USB rs232 dongle...). If for any
4092 * reason the configured console is not ready, we fallback to the default
4095 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4096 return m
->confirm_spawn
;
4098 if (stat(m
->confirm_spawn
, &st
) < 0) {
4103 if (!S_ISCHR(st
.st_mode
)) {
4109 return m
->confirm_spawn
;
4112 if (last_errno
!= r
)
4113 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4115 return "/dev/console";
4118 void manager_set_first_boot(Manager
*m
, bool b
) {
4121 if (!MANAGER_IS_SYSTEM(m
))
4124 if (m
->first_boot
!= (int) b
) {
4126 (void) touch("/run/systemd/first-boot");
4128 (void) unlink("/run/systemd/first-boot");
4134 void manager_disable_confirm_spawn(void) {
4135 (void) touch("/run/systemd/confirm_spawn_disabled");
4138 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4139 if (!m
->confirm_spawn
)
4142 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4145 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4148 /* If m is NULL, assume we're after shutdown and let the messages through. */
4150 if (m
&& !manager_get_show_status(m
, type
))
4153 /* XXX We should totally drop the check for ephemeral here
4154 * and thus effectively make 'Type=idle' pointless. */
4155 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4158 va_start(ap
, format
);
4159 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4163 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4164 char p
[strlen(path
)+1];
4170 path_simplify(p
, false);
4172 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4175 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4180 assert(u
->manager
== m
);
4182 size
= set_size(m
->failed_units
);
4185 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4189 if (set_put(m
->failed_units
, u
) < 0)
4192 (void) set_remove(m
->failed_units
, u
);
4194 if (set_size(m
->failed_units
) != size
)
4195 bus_manager_send_change_signal(m
);
4200 ManagerState
manager_state(Manager
*m
) {
4205 /* Did we ever finish booting? If not then we are still starting up */
4206 if (!MANAGER_IS_FINISHED(m
)) {
4208 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4209 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4210 return MANAGER_INITIALIZING
;
4212 return MANAGER_STARTING
;
4215 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4216 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4217 if (u
&& unit_active_or_pending(u
))
4218 return MANAGER_STOPPING
;
4220 if (MANAGER_IS_SYSTEM(m
)) {
4221 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4222 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4223 if (u
&& unit_active_or_pending(u
))
4224 return MANAGER_MAINTENANCE
;
4226 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4227 if (u
&& unit_active_or_pending(u
))
4228 return MANAGER_MAINTENANCE
;
4231 /* Are there any failed units? If so, we are in degraded mode */
4232 if (set_size(m
->failed_units
) > 0)
4233 return MANAGER_DEGRADED
;
4235 return MANAGER_RUNNING
;
4238 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4240 static void manager_unref_uid_internal(
4245 int (*_clean_ipc
)(uid_t uid
)) {
4251 assert(uid_is_valid(uid
));
4254 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4255 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4257 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4258 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4259 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4260 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4262 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4263 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4265 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4268 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4270 n
= c
& ~DESTROY_IPC_FLAG
;
4274 if (destroy_now
&& n
== 0) {
4275 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4277 if (c
& DESTROY_IPC_FLAG
) {
4278 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4279 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4281 (void) _clean_ipc(uid
);
4284 c
= n
| (c
& DESTROY_IPC_FLAG
);
4285 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4289 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4290 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4293 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4294 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4297 static int manager_ref_uid_internal(
4308 assert(uid_is_valid(uid
));
4310 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4311 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4313 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4314 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4316 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4319 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4323 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4325 n
= c
& ~DESTROY_IPC_FLAG
;
4328 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4331 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4333 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4336 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4337 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4340 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4341 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4344 static void manager_vacuum_uid_refs_internal(
4347 int (*_clean_ipc
)(uid_t uid
)) {
4356 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4360 uid
= PTR_TO_UID(k
);
4361 c
= PTR_TO_UINT32(p
);
4363 n
= c
& ~DESTROY_IPC_FLAG
;
4367 if (c
& DESTROY_IPC_FLAG
) {
4368 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4369 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4371 (void) _clean_ipc(uid
);
4374 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4378 void manager_vacuum_uid_refs(Manager
*m
) {
4379 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4382 void manager_vacuum_gid_refs(Manager
*m
) {
4383 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4386 static void manager_serialize_uid_refs_internal(
4390 const char *field_name
) {
4400 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4401 * of it is better rebuild after a reload/reexec. */
4403 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4407 uid
= PTR_TO_UID(k
);
4408 c
= PTR_TO_UINT32(p
);
4410 if (!(c
& DESTROY_IPC_FLAG
))
4413 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4417 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4418 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4421 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4422 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4425 static void manager_deserialize_uid_refs_one_internal(
4428 const char *value
) {
4438 r
= parse_uid(value
, &uid
);
4439 if (r
< 0 || uid
== 0) {
4440 log_debug("Unable to parse UID reference serialization");
4444 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4450 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4451 if (c
& DESTROY_IPC_FLAG
)
4454 c
|= DESTROY_IPC_FLAG
;
4456 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4458 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4463 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4464 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4467 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4468 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4471 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4475 char unit_name
[UNIT_NAME_MAX
+1];
4478 Manager
*m
= userdata
;
4486 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4487 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4488 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4490 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4492 if (IN_SET(errno
, EINTR
, EAGAIN
))
4495 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4498 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4499 log_warning("Received too short user lookup message, ignoring.");
4503 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4504 log_warning("Received too long user lookup message, ignoring.");
4508 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4509 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4513 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4514 if (memchr(buffer
.unit_name
, 0, n
)) {
4515 log_warning("Received lookup message with embedded NUL character, ignoring.");
4519 buffer
.unit_name
[n
] = 0;
4520 u
= manager_get_unit(m
, buffer
.unit_name
);
4522 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4526 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4528 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4532 char *manager_taint_string(Manager
*m
) {
4533 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4537 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4538 * Only things that are detected at runtime should be tagged
4539 * here. For stuff that is set during compilation, emit a warning
4540 * in the configuration phase. */
4544 buf
= new(char, sizeof("split-usr:"
4548 "overflowuid-not-65534:"
4549 "overflowgid-not-65534:"));
4557 e
= stpcpy(e
, "split-usr:");
4559 if (access("/proc/cgroups", F_OK
) < 0)
4560 e
= stpcpy(e
, "cgroups-missing:");
4562 if (clock_is_localtime(NULL
) > 0)
4563 e
= stpcpy(e
, "local-hwclock:");
4565 r
= readlink_malloc("/var/run", &destination
);
4566 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4567 e
= stpcpy(e
, "var-run-bad:");
4569 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4570 if (r
>= 0 && !streq(overflowuid
, "65534"))
4571 e
= stpcpy(e
, "overflowuid-not-65534:");
4573 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4574 if (r
>= 0 && !streq(overflowgid
, "65534"))
4575 e
= stpcpy(e
, "overflowgid-not-65534:");
4577 /* remove the last ':' */
4584 void manager_ref_console(Manager
*m
) {
4590 void manager_unref_console(Manager
*m
) {
4592 assert(m
->n_on_console
> 0);
4595 if (m
->n_on_console
== 0)
4596 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4599 void manager_override_log_level(Manager
*m
, int level
) {
4600 _cleanup_free_
char *s
= NULL
;
4603 if (!m
->log_level_overridden
) {
4604 m
->original_log_level
= log_get_max_level();
4605 m
->log_level_overridden
= true;
4608 (void) log_level_to_string_alloc(level
, &s
);
4609 log_info("Setting log level to %s.", strna(s
));
4611 log_set_max_level(level
);
4614 void manager_restore_original_log_level(Manager
*m
) {
4615 _cleanup_free_
char *s
= NULL
;
4618 if (!m
->log_level_overridden
)
4621 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4622 log_info("Restoring log level to original (%s).", strna(s
));
4624 log_set_max_level(m
->original_log_level
);
4625 m
->log_level_overridden
= false;
4628 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4631 if (!m
->log_target_overridden
) {
4632 m
->original_log_target
= log_get_target();
4633 m
->log_target_overridden
= true;
4636 log_info("Setting log target to %s.", log_target_to_string(target
));
4637 log_set_target(target
);
4640 void manager_restore_original_log_target(Manager
*m
) {
4643 if (!m
->log_target_overridden
)
4646 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4648 log_set_target(m
->original_log_target
);
4649 m
->log_target_overridden
= false;
4652 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4654 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4655 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4656 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4660 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4661 [MANAGER_INITIALIZING
] = "initializing",
4662 [MANAGER_STARTING
] = "starting",
4663 [MANAGER_RUNNING
] = "running",
4664 [MANAGER_DEGRADED
] = "degraded",
4665 [MANAGER_MAINTENANCE
] = "maintenance",
4666 [MANAGER_STOPPING
] = "stopping",
4669 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4671 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4672 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4673 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4674 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4675 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4676 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4677 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4678 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4679 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4680 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4681 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4682 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4683 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4684 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4685 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4686 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4687 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4688 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4689 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4692 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4694 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4695 [OOM_CONTINUE
] = "continue",
4696 [OOM_STOP
] = "stop",
4697 [OOM_KILL
] = "kill",
4700 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);