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"
39 #include "dirent-util.h"
42 #include "exec-util.h"
44 #include "exit-status.h"
52 #include "locale-setup.h"
56 #include "memory-util.h"
59 #include "parse-util.h"
60 #include "path-lookup.h"
61 #include "path-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 "sysctl-util.h"
76 #include "syslog-util.h"
77 #include "terminal-util.h"
78 #include "time-util.h"
79 #include "transaction.h"
80 #include "umask-util.h"
81 #include "unit-name.h"
82 #include "user-util.h"
86 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
87 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
89 /* Initial delay and the interval for printing status messages about running jobs */
90 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
91 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
92 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
94 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
95 * the queue gets more empty. */
96 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
98 /* How many units and jobs to process of the bus queue before returning to the event loop. */
99 #define MANAGER_BUS_MESSAGE_BUDGET 100U
101 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
106 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
107 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
108 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
109 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
110 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
111 static int manager_run_environment_generators(Manager
*m
);
112 static int manager_run_generators(Manager
*m
);
114 static void manager_watch_jobs_in_progress(Manager
*m
) {
120 /* We do not want to show the cylon animation if the user
121 * needs to confirm service executions otherwise confirmation
122 * messages will be screwed by the cylon animation. */
123 if (!manager_is_confirm_spawn_disabled(m
))
126 if (m
->jobs_in_progress_event_source
)
129 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
130 r
= sd_event_add_time(
132 &m
->jobs_in_progress_event_source
,
135 manager_dispatch_jobs_in_progress
, m
);
139 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
142 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
144 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
147 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
148 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
152 p
= mempset(p
, ' ', pos
-2);
153 if (log_get_show_color())
154 p
= stpcpy(p
, ANSI_RED
);
158 if (pos
> 0 && pos
<= width
) {
159 if (log_get_show_color())
160 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
164 if (log_get_show_color())
165 p
= stpcpy(p
, ANSI_NORMAL
);
168 if (log_get_show_color())
169 p
= stpcpy(p
, ANSI_RED
);
172 p
= mempset(p
, ' ', width
-1-pos
);
173 if (log_get_show_color())
174 strcpy(p
, ANSI_NORMAL
);
178 void manager_flip_auto_status(Manager
*m
, bool enable
) {
182 if (m
->show_status
== SHOW_STATUS_AUTO
)
183 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
185 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
186 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
190 static void manager_print_jobs_in_progress(Manager
*m
) {
191 _cleanup_free_
char *job_of_n
= NULL
;
194 unsigned counter
= 0, print_nr
;
195 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
197 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
201 assert(m
->n_running_jobs
> 0);
203 manager_flip_auto_status(m
, true);
205 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
207 HASHMAP_FOREACH(j
, m
->jobs
, i
)
208 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
211 /* m->n_running_jobs must be consistent with the contents of m->jobs,
212 * so the above loop must have succeeded in finding j. */
213 assert(counter
== print_nr
+ 1);
216 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
218 cylon_pos
= 14 - cylon_pos
;
219 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
221 m
->jobs_in_progress_iteration
++;
223 if (m
->n_running_jobs
> 1) {
224 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
228 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
229 if (job_get_timeout(j
, &x
) > 0)
230 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
232 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
233 "%sA %s job is running for %s (%s / %s)",
235 job_type_to_string(j
->type
),
236 unit_status_string(j
->unit
),
240 static int have_ask_password(void) {
241 _cleanup_closedir_
DIR *dir
;
244 dir
= opendir("/run/systemd/ask-password");
252 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
253 if (startswith(de
->d_name
, "ask."))
259 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
260 int fd
, uint32_t revents
, void *userdata
) {
261 Manager
*m
= userdata
;
267 m
->have_ask_password
= have_ask_password();
268 if (m
->have_ask_password
< 0)
269 /* Log error but continue. Negative have_ask_password
270 * is treated as unknown status. */
271 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
276 static void manager_close_ask_password(Manager
*m
) {
279 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
280 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
281 m
->have_ask_password
= -EINVAL
;
284 static int manager_check_ask_password(Manager
*m
) {
289 if (!m
->ask_password_event_source
) {
290 assert(m
->ask_password_inotify_fd
< 0);
292 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
294 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
295 if (m
->ask_password_inotify_fd
< 0)
296 return log_error_errno(errno
, "Failed to create inotify object: %m");
298 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
299 "/run/systemd/ask-password",
300 IN_CREATE
|IN_DELETE
|IN_MOVE
);
302 manager_close_ask_password(m
);
306 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
307 m
->ask_password_inotify_fd
, EPOLLIN
,
308 manager_dispatch_ask_password_fd
, m
);
310 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
311 manager_close_ask_password(m
);
315 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
317 /* Queries might have been added meanwhile... */
318 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
319 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
322 return m
->have_ask_password
;
325 static int manager_watch_idle_pipe(Manager
*m
) {
330 if (m
->idle_pipe_event_source
)
333 if (m
->idle_pipe
[2] < 0)
336 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
338 return log_error_errno(r
, "Failed to watch idle pipe: %m");
340 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
345 static void manager_close_idle_pipe(Manager
*m
) {
348 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
350 safe_close_pair(m
->idle_pipe
);
351 safe_close_pair(m
->idle_pipe
+ 2);
354 static int manager_setup_time_change(Manager
*m
) {
359 if (MANAGER_IS_TEST_RUN(m
))
362 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
363 m
->time_change_fd
= safe_close(m
->time_change_fd
);
365 m
->time_change_fd
= time_change_fd();
366 if (m
->time_change_fd
< 0)
367 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
369 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
371 return log_error_errno(r
, "Failed to create time change event source: %m");
373 /* Schedule this slightly earlier than the .timer event sources */
374 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
376 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
378 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
380 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
385 static int manager_read_timezone_stat(Manager
*m
) {
391 /* Read the current stat() data of /etc/localtime so that we detect changes */
392 if (lstat("/etc/localtime", &st
) < 0) {
393 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
394 changed
= m
->etc_localtime_accessible
;
395 m
->etc_localtime_accessible
= false;
399 k
= timespec_load(&st
.st_mtim
);
400 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
402 m
->etc_localtime_mtime
= k
;
403 m
->etc_localtime_accessible
= true;
409 static int manager_setup_timezone_change(Manager
*m
) {
410 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
415 if (MANAGER_IS_TEST_RUN(m
))
418 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
419 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
420 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
421 * went to zero and all fds to it are closed.
423 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
426 * Note that we create the new event source first here, before releasing the old one. This should optimize
427 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
429 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
430 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
432 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
433 * O_CREATE or by rename() */
435 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
436 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
437 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
440 return log_error_errno(r
, "Failed to create timezone change event source: %m");
442 /* Schedule this slightly earlier than the .timer event sources */
443 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
445 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
447 sd_event_source_unref(m
->timezone_change_event_source
);
448 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
453 static int enable_special_signals(Manager
*m
) {
454 _cleanup_close_
int fd
= -1;
458 if (MANAGER_IS_TEST_RUN(m
))
461 /* Enable that we get SIGINT on control-alt-del. In containers
462 * this will fail with EPERM (older) or EINVAL (newer), so
464 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
465 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
467 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
469 /* Support systems without virtual console */
471 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
473 /* Enable that we get SIGWINCH on kbrequest */
474 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
475 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
481 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
483 static int manager_setup_signals(Manager
*m
) {
484 struct sigaction sa
= {
485 .sa_handler
= SIG_DFL
,
486 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
493 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
495 /* We make liberal use of realtime signals here. On
496 * Linux/glibc we have 30 of them (with the exception of Linux
497 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
500 assert_se(sigemptyset(&mask
) == 0);
501 sigset_add_many(&mask
,
502 SIGCHLD
, /* Child died */
503 SIGTERM
, /* Reexecute daemon */
504 SIGHUP
, /* Reload configuration */
505 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
506 SIGUSR2
, /* systemd: dump status */
507 SIGINT
, /* Kernel sends us this on control-alt-del */
508 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
509 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
511 SIGRTMIN
+0, /* systemd: start default.target */
512 SIGRTMIN
+1, /* systemd: isolate rescue.target */
513 SIGRTMIN
+2, /* systemd: isolate emergency.target */
514 SIGRTMIN
+3, /* systemd: start halt.target */
515 SIGRTMIN
+4, /* systemd: start poweroff.target */
516 SIGRTMIN
+5, /* systemd: start reboot.target */
517 SIGRTMIN
+6, /* systemd: start kexec.target */
519 /* ... space for more special targets ... */
521 SIGRTMIN
+13, /* systemd: Immediate halt */
522 SIGRTMIN
+14, /* systemd: Immediate poweroff */
523 SIGRTMIN
+15, /* systemd: Immediate reboot */
524 SIGRTMIN
+16, /* systemd: Immediate kexec */
526 /* ... space for more immediate system state changes ... */
528 SIGRTMIN
+20, /* systemd: enable status messages */
529 SIGRTMIN
+21, /* systemd: disable status messages */
530 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
531 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
532 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
534 /* .. one free signal here ... */
536 /* Apparently Linux on hppa had fewer RT signals until v3.18,
537 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
538 * see commit v3.17-7614-g1f25df2eff.
540 * We cannot unconditionally make use of those signals here,
541 * so let's use a runtime check. Since these commands are
542 * accessible by different means and only really a safety
543 * net, the missing functionality on hppa shouldn't matter.
546 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
547 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
548 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
549 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
551 /* ... one free signal here SIGRTMIN+30 ... */
553 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
555 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
556 if (m
->signal_fd
< 0)
559 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
563 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
565 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
566 * notify processing can still figure out to which process/service a message belongs, before we reap the
567 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
568 * status information before detecting that there's no process in a cgroup. */
569 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
573 if (MANAGER_IS_SYSTEM(m
))
574 return enable_special_signals(m
);
579 static char** sanitize_environment(char **l
) {
581 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
602 /* Let's order the environment alphabetically, just to make it pretty */
608 int manager_default_environment(Manager
*m
) {
613 m
->transient_environment
= strv_free(m
->transient_environment
);
615 if (MANAGER_IS_SYSTEM(m
)) {
616 /* The system manager always starts with a clean
617 * environment for its children. It does not import
618 * the kernel's or the parents' exported variables.
620 * The initial passed environment is untouched to keep
621 * /proc/self/environ valid; it is used for tagging
622 * the init process inside containers. */
623 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
624 if (!m
->transient_environment
)
627 /* Import locale variables LC_*= from configuration */
628 (void) locale_setup(&m
->transient_environment
);
630 _cleanup_free_
char *k
= NULL
;
632 /* The user manager passes its own environment
633 * along to its children, except for $PATH. */
634 m
->transient_environment
= strv_copy(environ
);
635 if (!m
->transient_environment
)
638 k
= strdup("PATH=" DEFAULT_USER_PATH
);
642 r
= strv_env_replace(&m
->transient_environment
, k
);
648 sanitize_environment(m
->transient_environment
);
653 static int manager_setup_prefix(Manager
*m
) {
659 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
660 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
661 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
662 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
663 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
664 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
667 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
668 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
669 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
670 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
671 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
672 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
675 const struct table_entry
*p
;
681 if (MANAGER_IS_SYSTEM(m
))
686 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
687 r
= sd_path_home(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
695 static void manager_free_unit_name_maps(Manager
*m
) {
696 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
697 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
698 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
699 m
->unit_cache_mtime
= 0;
702 static int manager_setup_run_queue(Manager
*m
) {
706 assert(!m
->run_queue_event_source
);
708 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
712 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
716 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
720 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
725 static int manager_setup_sigchld_event_source(Manager
*m
) {
729 assert(!m
->sigchld_event_source
);
731 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
735 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
739 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
743 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
748 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
749 _cleanup_(manager_freep
) Manager
*m
= NULL
;
753 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
760 .unit_file_scope
= scope
,
761 .objective
= _MANAGER_OBJECTIVE_INVALID
,
763 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
765 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
766 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
767 .default_tasks_accounting
= true,
768 .default_tasks_max
= UINT64_MAX
,
769 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
770 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
771 .default_restart_usec
= DEFAULT_RESTART_USEC
,
773 .original_log_level
= -1,
774 .original_log_target
= _LOG_TARGET_INVALID
,
777 .cgroups_agent_fd
= -1,
779 .time_change_fd
= -1,
780 .user_lookup_fds
= { -1, -1 },
781 .private_listen_fd
= -1,
783 .cgroup_inotify_fd
= -1,
784 .pin_cgroupfs_fd
= -1,
785 .ask_password_inotify_fd
= -1,
786 .idle_pipe
= { -1, -1, -1, -1},
788 /* start as id #1, so that we can leave #0 around as "null-like" value */
791 .have_ask_password
= -EINVAL
, /* we don't know */
793 .test_run_flags
= test_run_flags
,
795 .default_oom_policy
= OOM_STOP
,
799 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
800 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
801 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
802 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
805 /* Prepare log fields we can use for structured logging */
806 if (MANAGER_IS_SYSTEM(m
)) {
807 m
->unit_log_field
= "UNIT=";
808 m
->unit_log_format_string
= "UNIT=%s";
810 m
->invocation_log_field
= "INVOCATION_ID=";
811 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
813 m
->unit_log_field
= "USER_UNIT=";
814 m
->unit_log_format_string
= "USER_UNIT=%s";
816 m
->invocation_log_field
= "USER_INVOCATION_ID=";
817 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
820 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
821 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
823 r
= manager_default_environment(m
);
827 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
831 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
835 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
839 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
843 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
847 r
= manager_setup_prefix(m
);
851 r
= sd_event_default(&m
->event
);
855 r
= manager_setup_run_queue(m
);
859 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
860 m
->cgroup_root
= strdup("");
864 r
= manager_setup_signals(m
);
868 r
= manager_setup_cgroup(m
);
872 r
= manager_setup_time_change(m
);
876 r
= manager_read_timezone_stat(m
);
880 (void) manager_setup_timezone_change(m
);
882 r
= manager_setup_sigchld_event_source(m
);
887 if (MANAGER_IS_SYSTEM(m
) && test_run_flags
== 0) {
888 r
= mkdir_label("/run/systemd/units", 0755);
889 if (r
< 0 && r
!= -EEXIST
)
895 dir_is_empty("/usr") > 0;
897 /* Note that we do not set up the notify fd here. We do that after deserialization,
898 * since they might have gotten serialized across the reexec. */
905 static int manager_setup_notify(Manager
*m
) {
908 if (MANAGER_IS_TEST_RUN(m
))
911 if (m
->notify_fd
< 0) {
912 _cleanup_close_
int fd
= -1;
913 union sockaddr_union sa
= {};
916 /* First free all secondary fields */
917 m
->notify_socket
= mfree(m
->notify_socket
);
918 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
920 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
922 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
924 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
926 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
927 if (!m
->notify_socket
)
930 salen
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
932 return log_error_errno(salen
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", m
->notify_socket
);
934 (void) mkdir_parents_label(m
->notify_socket
, 0755);
935 (void) sockaddr_un_unlink(&sa
.un
);
937 r
= bind(fd
, &sa
.sa
, salen
);
939 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
941 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
943 return log_error_errno(r
, "SO_PASSCRED failed: %m");
945 m
->notify_fd
= TAKE_FD(fd
);
947 log_debug("Using notification socket %s", m
->notify_socket
);
950 if (!m
->notify_event_source
) {
951 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
953 return log_error_errno(r
, "Failed to allocate notify event source: %m");
955 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
956 * service an exit message belongs. */
957 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
959 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
961 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
967 static int manager_setup_cgroups_agent(Manager
*m
) {
969 static const union sockaddr_union sa
= {
970 .un
.sun_family
= AF_UNIX
,
971 .un
.sun_path
= "/run/systemd/cgroups-agent",
975 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
976 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
977 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
978 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
979 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
980 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
981 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
982 * we thus won't lose messages.
984 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
985 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
986 * bus for these messages. */
988 if (MANAGER_IS_TEST_RUN(m
))
991 if (!MANAGER_IS_SYSTEM(m
))
994 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
996 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
997 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
1000 if (m
->cgroups_agent_fd
< 0) {
1001 _cleanup_close_
int fd
= -1;
1003 /* First free all secondary fields */
1004 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1006 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1008 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1010 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1012 (void) sockaddr_un_unlink(&sa
.un
);
1014 /* Only allow root to connect to this socket */
1015 RUN_WITH_UMASK(0077)
1016 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1018 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1020 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1023 if (!m
->cgroups_agent_event_source
) {
1024 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1026 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1028 /* Process cgroups notifications early. Note that when the agent notification is received
1029 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1030 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1031 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1033 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1035 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1041 static int manager_setup_user_lookup_fd(Manager
*m
) {
1046 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1047 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1048 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1049 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1050 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1051 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1052 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1053 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1056 * You might wonder why we need a communication channel for this that is independent of the usual notification
1057 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1058 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1059 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1061 * Note that this function is called under two circumstances: when we first initialize (in which case we
1062 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1063 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1065 if (m
->user_lookup_fds
[0] < 0) {
1067 /* Free all secondary fields */
1068 safe_close_pair(m
->user_lookup_fds
);
1069 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1071 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1072 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1074 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1077 if (!m
->user_lookup_event_source
) {
1078 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1080 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1082 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1084 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1086 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1088 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1094 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1100 while ((u
= m
->cleanup_queue
)) {
1101 assert(u
->in_cleanup_queue
);
1111 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1112 GC_OFFSET_UNSURE
, /* No clue */
1113 GC_OFFSET_GOOD
, /* We still need this unit */
1114 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1118 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1123 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1125 /* Recursively mark referenced units as GOOD as well */
1126 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1127 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1128 unit_gc_mark_good(other
, gc_marker
);
1131 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1139 if (IN_SET(u
->gc_marker
- gc_marker
,
1140 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1143 if (u
->in_cleanup_queue
)
1146 if (!unit_may_gc(u
))
1149 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1153 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1154 unit_gc_sweep(other
, gc_marker
);
1156 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1159 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1163 if (u
->refs_by_target
) {
1166 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1167 unit_gc_sweep(ref
->source
, gc_marker
);
1169 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1172 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1180 /* We were unable to find anything out about this entry, so
1181 * let's investigate it later */
1182 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1183 unit_add_to_gc_queue(u
);
1187 /* We definitely know that this one is not useful anymore, so
1188 * let's mark it for deletion */
1189 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1190 unit_add_to_cleanup_queue(u
);
1194 unit_gc_mark_good(u
, gc_marker
);
1197 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1198 unsigned n
= 0, gc_marker
;
1203 /* log_debug("Running GC..."); */
1205 m
->gc_marker
+= _GC_OFFSET_MAX
;
1206 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1209 gc_marker
= m
->gc_marker
;
1211 while ((u
= m
->gc_unit_queue
)) {
1212 assert(u
->in_gc_queue
);
1214 unit_gc_sweep(u
, gc_marker
);
1216 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1217 u
->in_gc_queue
= false;
1221 if (IN_SET(u
->gc_marker
- gc_marker
,
1222 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1224 log_unit_debug(u
, "Collecting.");
1225 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1226 unit_add_to_cleanup_queue(u
);
1233 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1239 while ((j
= m
->gc_job_queue
)) {
1240 assert(j
->in_gc_queue
);
1242 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1243 j
->in_gc_queue
= false;
1250 log_unit_debug(j
->unit
, "Collecting job.");
1251 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1257 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1264 while ((u
= m
->stop_when_unneeded_queue
)) {
1265 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1266 assert(m
->stop_when_unneeded_queue
);
1268 assert(u
->in_stop_when_unneeded_queue
);
1269 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1270 u
->in_stop_when_unneeded_queue
= false;
1274 if (!unit_is_unneeded(u
))
1277 log_unit_debug(u
, "Unit is not needed anymore.");
1279 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1280 * service being unnecessary after a while. */
1282 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1283 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1287 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1288 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1290 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1296 static void manager_clear_jobs_and_units(Manager
*m
) {
1301 while ((u
= hashmap_first(m
->units
)))
1304 manager_dispatch_cleanup_queue(m
);
1306 assert(!m
->load_queue
);
1307 assert(prioq_isempty(m
->run_queue
));
1308 assert(!m
->dbus_unit_queue
);
1309 assert(!m
->dbus_job_queue
);
1310 assert(!m
->cleanup_queue
);
1311 assert(!m
->gc_unit_queue
);
1312 assert(!m
->gc_job_queue
);
1313 assert(!m
->stop_when_unneeded_queue
);
1315 assert(hashmap_isempty(m
->jobs
));
1316 assert(hashmap_isempty(m
->units
));
1318 m
->n_on_console
= 0;
1319 m
->n_running_jobs
= 0;
1320 m
->n_installed_jobs
= 0;
1321 m
->n_failed_jobs
= 0;
1324 Manager
* manager_free(Manager
*m
) {
1325 ExecDirectoryType dt
;
1331 manager_clear_jobs_and_units(m
);
1333 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1334 if (unit_vtable
[c
]->shutdown
)
1335 unit_vtable
[c
]->shutdown(m
);
1337 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1338 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1340 lookup_paths_flush_generator(&m
->lookup_paths
);
1344 exec_runtime_vacuum(m
);
1345 hashmap_free(m
->exec_runtime_by_id
);
1347 dynamic_user_vacuum(m
, false);
1348 hashmap_free(m
->dynamic_users
);
1350 hashmap_free(m
->units
);
1351 hashmap_free(m
->units_by_invocation_id
);
1352 hashmap_free(m
->jobs
);
1353 hashmap_free(m
->watch_pids
);
1354 hashmap_free(m
->watch_bus
);
1356 prioq_free(m
->run_queue
);
1358 set_free(m
->startup_units
);
1359 set_free(m
->failed_units
);
1361 sd_event_source_unref(m
->signal_event_source
);
1362 sd_event_source_unref(m
->sigchld_event_source
);
1363 sd_event_source_unref(m
->notify_event_source
);
1364 sd_event_source_unref(m
->cgroups_agent_event_source
);
1365 sd_event_source_unref(m
->time_change_event_source
);
1366 sd_event_source_unref(m
->timezone_change_event_source
);
1367 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1368 sd_event_source_unref(m
->run_queue_event_source
);
1369 sd_event_source_unref(m
->user_lookup_event_source
);
1370 sd_event_source_unref(m
->sync_bus_names_event_source
);
1372 safe_close(m
->signal_fd
);
1373 safe_close(m
->notify_fd
);
1374 safe_close(m
->cgroups_agent_fd
);
1375 safe_close(m
->time_change_fd
);
1376 safe_close_pair(m
->user_lookup_fds
);
1378 manager_close_ask_password(m
);
1380 manager_close_idle_pipe(m
);
1382 sd_event_unref(m
->event
);
1384 free(m
->notify_socket
);
1386 lookup_paths_free(&m
->lookup_paths
);
1387 strv_free(m
->transient_environment
);
1388 strv_free(m
->client_environment
);
1390 hashmap_free(m
->cgroup_unit
);
1391 manager_free_unit_name_maps(m
);
1393 free(m
->switch_root
);
1394 free(m
->switch_root_init
);
1396 rlimit_free_all(m
->rlimit
);
1398 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1399 hashmap_free(m
->units_requiring_mounts_for
);
1401 hashmap_free(m
->uid_refs
);
1402 hashmap_free(m
->gid_refs
);
1404 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1405 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1410 static void manager_enumerate_perpetual(Manager
*m
) {
1415 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1418 /* Let's ask every type to load all units from disk/kernel that it might know */
1419 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1420 if (!unit_type_supported(c
)) {
1421 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1425 if (unit_vtable
[c
]->enumerate_perpetual
)
1426 unit_vtable
[c
]->enumerate_perpetual(m
);
1430 static void manager_enumerate(Manager
*m
) {
1435 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1438 /* Let's ask every type to load all units from disk/kernel that it might know */
1439 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1440 if (!unit_type_supported(c
)) {
1441 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1445 if (unit_vtable
[c
]->enumerate
)
1446 unit_vtable
[c
]->enumerate(m
);
1449 manager_dispatch_load_queue(m
);
1452 static void manager_coldplug(Manager
*m
) {
1460 log_debug("Invoking unit coldplug() handlers…");
1462 /* Let's place the units back into their deserialized state */
1463 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1465 /* ignore aliases */
1469 r
= unit_coldplug(u
);
1471 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1475 static void manager_catchup(Manager
*m
) {
1482 log_debug("Invoking unit catchup() handlers…");
1484 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1485 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1487 /* ignore aliases */
1495 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1501 HASHMAP_FOREACH(u
, m
->units
, i
) {
1503 if (fdset_size(fds
) <= 0)
1506 if (!UNIT_VTABLE(u
)->distribute_fds
)
1509 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1513 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1518 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1519 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1520 * rather than the current one. */
1522 if (MANAGER_IS_TEST_RUN(m
))
1525 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1528 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1531 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1534 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1540 static void manager_setup_bus(Manager
*m
) {
1543 /* Let's set up our private bus connection now, unconditionally */
1544 (void) bus_init_private(m
);
1546 /* If we are in --user mode also connect to the system bus now */
1547 if (MANAGER_IS_USER(m
))
1548 (void) bus_init_system(m
);
1550 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1551 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1552 (void) bus_init_api(m
);
1554 if (MANAGER_IS_SYSTEM(m
))
1555 (void) bus_init_system(m
);
1559 static void manager_preset_all(Manager
*m
) {
1564 if (m
->first_boot
<= 0)
1567 if (!MANAGER_IS_SYSTEM(m
))
1570 if (MANAGER_IS_TEST_RUN(m
))
1573 /* If this is the first boot, and we are in the host system, then preset everything */
1574 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1576 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1577 "Failed to populate /etc with preset unit settings, ignoring: %m");
1579 log_info("Populated /etc with preset unit settings.");
1582 static void manager_vacuum(Manager
*m
) {
1585 /* Release any dynamic users no longer referenced */
1586 dynamic_user_vacuum(m
, true);
1588 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1589 manager_vacuum_uid_refs(m
);
1590 manager_vacuum_gid_refs(m
);
1592 /* Release any runtimes no longer referenced */
1593 exec_runtime_vacuum(m
);
1596 static void manager_ready(Manager
*m
) {
1599 /* After having loaded everything, do the final round of catching up with what might have changed */
1601 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1603 /* It might be safe to log to the journal now and connect to dbus */
1604 manager_recheck_journal(m
);
1605 manager_recheck_dbus(m
);
1607 /* Sync current state of bus names with our set of listening units */
1608 (void) manager_enqueue_sync_bus_names(m
);
1610 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1613 m
->honor_device_enumeration
= true;
1616 static Manager
* manager_reloading_start(Manager
*m
) {
1620 static void manager_reloading_stopp(Manager
**m
) {
1622 assert((*m
)->n_reloading
> 0);
1623 (*m
)->n_reloading
--;
1627 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1632 /* If we are running in test mode, we still want to run the generators,
1633 * but we should not touch the real generator directories. */
1634 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1635 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1638 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1640 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1641 r
= manager_run_environment_generators(m
);
1643 r
= manager_run_generators(m
);
1644 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1648 manager_preset_all(m
);
1650 lookup_paths_log(&m
->lookup_paths
);
1653 /* This block is (optionally) done with the reloading counter bumped */
1654 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1656 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1657 * counter here already */
1659 reloading
= manager_reloading_start(m
);
1661 /* First, enumerate what we can from all config files */
1662 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1663 manager_enumerate_perpetual(m
);
1664 manager_enumerate(m
);
1665 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1667 /* Second, deserialize if there is something to deserialize */
1668 if (serialization
) {
1669 r
= manager_deserialize(m
, serialization
, fds
);
1671 return log_error_errno(r
, "Deserialization failed: %m");
1674 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1675 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1677 manager_distribute_fds(m
, fds
);
1679 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1680 r
= manager_setup_notify(m
);
1682 /* No sense to continue without notifications, our children would fail anyway. */
1685 r
= manager_setup_cgroups_agent(m
);
1687 /* Likewise, no sense to continue without empty cgroup notifications. */
1690 r
= manager_setup_user_lookup_fd(m
);
1692 /* This shouldn't fail, except if things are really broken. */
1695 /* Connect to the bus if we are good for it */
1696 manager_setup_bus(m
);
1698 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1699 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1701 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1702 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1704 /* Third, fire things up! */
1705 manager_coldplug(m
);
1707 /* Clean up runtime objects */
1711 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1712 * reload is finished */
1713 m
->send_reloading_done
= true;
1721 int manager_add_job(
1727 sd_bus_error
*error
,
1734 assert(type
< _JOB_TYPE_MAX
);
1736 assert(mode
< _JOB_MODE_MAX
);
1738 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1739 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1741 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1742 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1744 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1746 type
= job_type_collapse(type
, unit
);
1748 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1752 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1753 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1754 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1758 if (mode
== JOB_ISOLATE
) {
1759 r
= transaction_add_isolate_jobs(tr
, m
);
1764 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1768 log_unit_debug(unit
,
1769 "Enqueued job %s/%s as %u", unit
->id
,
1770 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1773 *ret
= tr
->anchor_job
;
1775 transaction_free(tr
);
1779 transaction_abort(tr
);
1780 transaction_free(tr
);
1784 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1785 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1789 assert(type
< _JOB_TYPE_MAX
);
1791 assert(mode
< _JOB_MODE_MAX
);
1793 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1798 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1801 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1802 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1806 assert(type
< _JOB_TYPE_MAX
);
1808 assert(mode
< _JOB_MODE_MAX
);
1810 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1812 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1817 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1823 assert(mode
< _JOB_MODE_MAX
);
1824 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1826 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1830 /* We need an anchor job */
1831 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1835 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1836 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1838 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1842 transaction_free(tr
);
1846 transaction_abort(tr
);
1847 transaction_free(tr
);
1851 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1854 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1857 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1861 return hashmap_get(m
->units
, name
);
1864 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1869 static const UnitDependency deps
[] = {
1878 while ((u
= m
->target_deps_queue
)) {
1879 assert(u
->in_target_deps_queue
);
1881 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1882 u
->in_target_deps_queue
= false;
1884 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1889 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1890 r
= unit_add_default_target_dependency(u
, target
);
1900 unsigned manager_dispatch_load_queue(Manager
*m
) {
1906 /* Make sure we are not run recursively */
1907 if (m
->dispatching_load_queue
)
1910 m
->dispatching_load_queue
= true;
1912 /* Dispatches the load queue. Takes a unit from the queue and
1913 * tries to load its data until the queue is empty */
1915 while ((u
= m
->load_queue
)) {
1916 assert(u
->in_load_queue
);
1922 m
->dispatching_load_queue
= false;
1924 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1925 * should be loaded and have aliases resolved */
1926 (void) manager_dispatch_target_deps_queue(m
);
1931 int manager_load_unit_prepare(
1938 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1944 assert(name
|| path
);
1947 /* This will prepare the unit for loading, but not actually
1948 * load anything from disk. */
1950 if (path
&& !is_path(path
))
1951 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1954 name
= basename(path
);
1956 t
= unit_name_to_type(name
);
1958 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1959 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1960 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1962 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1965 ret
= manager_get_unit(m
, name
);
1971 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1976 ret
->fragment_path
= strdup(path
);
1977 if (!ret
->fragment_path
)
1981 r
= unit_add_name(ret
, name
);
1985 unit_add_to_load_queue(ret
);
1986 unit_add_to_dbus_queue(ret
);
1987 unit_add_to_gc_queue(ret
);
1995 int manager_load_unit(
2007 /* This will load the service information files, but not actually
2008 * start any services or anything. */
2010 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2014 manager_dispatch_load_queue(m
);
2016 *_ret
= unit_follow_merge(*_ret
);
2020 int manager_load_startable_unit_or_warn(
2026 /* Load a unit, make sure it loaded fully and is not masked. */
2028 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2032 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2034 return log_error_errno(r
, "Failed to load %s %s: %s",
2035 name
? "unit" : "unit file", name
?: path
,
2036 bus_error_message(&error
, r
));
2038 r
= bus_unit_validate_load_state(unit
, &error
);
2040 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2046 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2053 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2054 job_dump(j
, f
, prefix
);
2057 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2065 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2067 unit_dump(u
, f
, prefix
);
2070 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2076 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2077 const dual_timestamp
*t
= m
->timestamps
+ q
;
2078 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2080 if (dual_timestamp_is_set(t
))
2081 fprintf(f
, "%sTimestamp %s: %s\n",
2083 manager_timestamp_to_string(q
),
2084 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2085 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2088 manager_dump_units(m
, f
, prefix
);
2089 manager_dump_jobs(m
, f
, prefix
);
2092 int manager_get_dump_string(Manager
*m
, char **ret
) {
2093 _cleanup_free_
char *dump
= NULL
;
2094 _cleanup_fclose_
FILE *f
= NULL
;
2101 f
= open_memstream_unlocked(&dump
, &size
);
2105 manager_dump(m
, f
, NULL
);
2107 r
= fflush_and_check(f
);
2113 *ret
= TAKE_PTR(dump
);
2118 void manager_clear_jobs(Manager
*m
) {
2123 while ((j
= hashmap_first(m
->jobs
)))
2124 /* No need to recurse. We're cancelling all jobs. */
2125 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2128 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2131 /* First let's drop the unit keyed as "pid". */
2132 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2134 /* Then, let's also drop the array keyed by -pid. */
2135 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2138 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2139 Manager
*m
= userdata
;
2145 while ((j
= prioq_peek(m
->run_queue
))) {
2146 assert(j
->installed
);
2147 assert(j
->in_run_queue
);
2149 (void) job_run_and_invalidate(j
);
2152 if (m
->n_running_jobs
> 0)
2153 manager_watch_jobs_in_progress(m
);
2155 if (m
->n_on_console
> 0)
2156 manager_watch_idle_pipe(m
);
2161 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2162 unsigned n
= 0, budget
;
2168 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2169 * as we can. There's no point in throttling generation of signals in that case. */
2170 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2171 budget
= (unsigned) -1; /* infinite budget in this case */
2173 /* Anything to do at all? */
2174 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2177 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2178 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2179 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2182 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2183 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2184 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2185 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2186 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2187 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2188 * connections it will be counted five times. This difference in counting ("references"
2189 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2190 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2191 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2192 * currently chosen much higher than the "budget". */
2193 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2196 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2198 assert(u
->in_dbus_queue
);
2200 bus_unit_send_change_signal(u
);
2203 if (budget
!= (unsigned) -1)
2207 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2208 assert(j
->in_dbus_queue
);
2210 bus_job_send_change_signal(j
);
2213 if (budget
!= (unsigned) -1)
2217 if (m
->send_reloading_done
) {
2218 m
->send_reloading_done
= false;
2219 bus_manager_send_reloading(m
, false);
2223 if (m
->pending_reload_message
) {
2224 bus_send_pending_reload_message(m
);
2231 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2232 Manager
*m
= userdata
;
2236 n
= recv(fd
, buf
, sizeof(buf
), 0);
2238 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2240 log_error("Got zero-length cgroups agent message, ignoring.");
2243 if ((size_t) n
>= sizeof(buf
)) {
2244 log_error("Got overly long cgroups agent message, ignoring.");
2248 if (memchr(buf
, 0, n
)) {
2249 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2254 manager_notify_cgroup_empty(m
, buf
);
2255 (void) bus_forward_agent_released(m
, buf
);
2260 static void manager_invoke_notify_message(
2263 const struct ucred
*ucred
,
2272 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2274 u
->notifygen
= m
->notifygen
;
2276 if (UNIT_VTABLE(u
)->notify_message
) {
2277 _cleanup_strv_free_
char **tags
= NULL
;
2279 tags
= strv_split(buf
, NEWLINE
);
2285 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2287 } else if (DEBUG_LOGGING
) {
2288 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2290 x
= ellipsize(buf
, 20, 90);
2294 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2298 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2300 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2301 Manager
*m
= userdata
;
2302 char buf
[NOTIFY_BUFFER_MAX
+1];
2303 struct iovec iovec
= {
2305 .iov_len
= sizeof(buf
)-1,
2308 struct cmsghdr cmsghdr
;
2309 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2310 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2312 struct msghdr msghdr
= {
2315 .msg_control
= &control
,
2316 .msg_controllen
= sizeof(control
),
2319 struct cmsghdr
*cmsg
;
2320 struct ucred
*ucred
= NULL
;
2321 _cleanup_free_ Unit
**array_copy
= NULL
;
2322 Unit
*u1
, *u2
, **array
;
2323 int r
, *fd_array
= NULL
;
2329 assert(m
->notify_fd
== fd
);
2331 if (revents
!= EPOLLIN
) {
2332 log_warning("Got unexpected poll event for notify fd.");
2336 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2338 if (IN_SET(errno
, EAGAIN
, EINTR
))
2339 return 0; /* Spurious wakeup, try again */
2341 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2342 * won't take notification messages anymore, but that's still better than busy looping around this:
2343 * being woken up over and over again but being unable to actually read the message off the socket. */
2344 return log_error_errno(errno
, "Failed to receive notification message: %m");
2347 CMSG_FOREACH(cmsg
, &msghdr
) {
2348 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2350 fd_array
= (int*) CMSG_DATA(cmsg
);
2351 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2353 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2354 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2355 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2357 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2364 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2366 close_many(fd_array
, n_fds
);
2372 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2373 log_warning("Received notify message without valid credentials. Ignoring.");
2377 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2378 log_warning("Received notify message exceeded maximum size. Ignoring.");
2382 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2383 * trailing NUL byte in the message, but don't expect it. */
2384 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2385 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2389 /* Make sure it's NUL-terminated. */
2392 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2395 /* Notify every unit that might be interested, which might be multiple. */
2396 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2397 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2398 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2405 array_copy
= newdup(Unit
*, array
, k
+1);
2409 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2410 * make sure we only invoke each unit's handler once. */
2412 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2416 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2420 for (size_t i
= 0; array_copy
[i
]; i
++) {
2421 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2426 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2428 if (fdset_size(fds
) > 0)
2429 log_warning("Got extra auxiliary fds with notification message, closing them.");
2434 static void manager_invoke_sigchld_event(
2437 const siginfo_t
*si
) {
2443 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2444 if (u
->sigchldgen
== m
->sigchldgen
)
2446 u
->sigchldgen
= m
->sigchldgen
;
2448 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2449 unit_unwatch_pid(u
, si
->si_pid
);
2451 if (UNIT_VTABLE(u
)->sigchld_event
)
2452 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2455 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2456 Manager
*m
= userdata
;
2463 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2464 * while it is a zombie. */
2466 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2468 if (errno
!= ECHILD
)
2469 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2477 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2478 _cleanup_free_ Unit
**array_copy
= NULL
;
2479 _cleanup_free_
char *name
= NULL
;
2480 Unit
*u1
, *u2
, **array
;
2482 (void) get_process_comm(si
.si_pid
, &name
);
2484 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2485 si
.si_pid
, strna(name
),
2486 sigchld_code_to_string(si
.si_code
),
2488 strna(si
.si_code
== CLD_EXITED
2489 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2490 : signal_to_string(si
.si_status
)));
2492 /* Increase the generation counter used for filtering out duplicate unit invocations */
2495 /* And now figure out the unit this belongs to, it might be multiple... */
2496 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2497 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2498 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2502 /* Count how many entries the array has */
2506 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2507 array_copy
= newdup(Unit
*, array
, n
+1);
2512 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2513 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2514 * each iteration. */
2516 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2517 * We only do this for the cgroup the PID belonged to. */
2518 (void) unit_check_oom(u1
);
2520 manager_invoke_sigchld_event(m
, u1
, &si
);
2523 manager_invoke_sigchld_event(m
, u2
, &si
);
2525 for (size_t i
= 0; array_copy
[i
]; i
++)
2526 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2529 /* And now, we actually reap the zombie. */
2530 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2531 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2538 /* All children processed for now, turn off event source */
2540 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2542 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2547 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2548 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2551 log_debug("Activating special unit %s", name
);
2553 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2555 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2558 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2559 /* If the user presses C-A-D more than
2560 * 7 times within 2s, we reboot/shutdown immediately,
2561 * unless it was disabled in system.conf */
2563 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2564 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2566 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2567 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2570 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2571 Manager
*m
= userdata
;
2573 struct signalfd_siginfo sfsi
;
2577 assert(m
->signal_fd
== fd
);
2579 if (revents
!= EPOLLIN
) {
2580 log_warning("Got unexpected events from signal file descriptor.");
2584 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2585 if (n
!= sizeof(sfsi
)) {
2587 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2591 if (IN_SET(errno
, EINTR
, EAGAIN
))
2594 /* We return an error here, which will kill this handler,
2595 * to avoid a busy loop on read error. */
2596 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2599 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2600 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2601 ? LOG_DEBUG
: LOG_INFO
,
2604 switch (sfsi
.ssi_signo
) {
2607 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2609 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2614 if (MANAGER_IS_SYSTEM(m
)) {
2615 /* This is for compatibility with the original sysvinit */
2616 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2619 m
->objective
= MANAGER_REEXECUTE
;
2625 if (MANAGER_IS_SYSTEM(m
))
2626 manager_handle_ctrl_alt_del(m
);
2628 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2629 JOB_REPLACE_IRREVERSIBLY
);
2633 /* This is a nop on non-init */
2634 if (MANAGER_IS_SYSTEM(m
))
2635 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2640 /* This is a nop on non-init */
2641 if (MANAGER_IS_SYSTEM(m
))
2642 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2647 if (manager_dbus_is_running(m
, false)) {
2648 log_info("Trying to reconnect to bus...");
2650 (void) bus_init_api(m
);
2652 if (MANAGER_IS_SYSTEM(m
))
2653 (void) bus_init_system(m
);
2655 log_info("Starting D-Bus service...");
2656 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2662 _cleanup_free_
char *dump
= NULL
;
2664 r
= manager_get_dump_string(m
, &dump
);
2666 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2670 log_dump(LOG_INFO
, dump
);
2675 if (verify_run_space_and_log("Refusing to reload") < 0)
2678 m
->objective
= MANAGER_RELOAD
;
2683 /* Starting SIGRTMIN+0 */
2684 static const struct {
2687 } target_table
[] = {
2688 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2689 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2690 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2691 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2692 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2693 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2694 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2697 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2698 static const ManagerObjective objective_table
[] = {
2700 [1] = MANAGER_POWEROFF
,
2701 [2] = MANAGER_REBOOT
,
2702 [3] = MANAGER_KEXEC
,
2705 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2706 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2707 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2708 manager_start_target(m
, target_table
[idx
].target
,
2709 target_table
[idx
].mode
);
2713 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2714 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2715 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2719 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2722 manager_set_show_status(m
, SHOW_STATUS_YES
);
2726 manager_set_show_status(m
, SHOW_STATUS_NO
);
2730 manager_override_log_level(m
, LOG_DEBUG
);
2734 manager_restore_original_log_level(m
);
2738 if (MANAGER_IS_USER(m
)) {
2739 m
->objective
= MANAGER_EXIT
;
2743 /* This is a nop on init */
2747 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2748 manager_restore_original_log_target(m
);
2752 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2756 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2760 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2767 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2768 Manager
*m
= userdata
;
2773 assert(m
->time_change_fd
== fd
);
2775 log_struct(LOG_DEBUG
,
2776 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2777 LOG_MESSAGE("Time has been changed"));
2779 /* Restart the watch */
2780 (void) manager_setup_time_change(m
);
2782 HASHMAP_FOREACH(u
, m
->units
, i
)
2783 if (UNIT_VTABLE(u
)->time_change
)
2784 UNIT_VTABLE(u
)->time_change(u
);
2789 static int manager_dispatch_timezone_change(
2790 sd_event_source
*source
,
2791 const struct inotify_event
*e
,
2794 Manager
*m
= userdata
;
2801 log_debug("inotify event for /etc/localtime");
2803 changed
= manager_read_timezone_stat(m
);
2807 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2808 (void) manager_setup_timezone_change(m
);
2810 /* Read the new timezone */
2813 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2815 HASHMAP_FOREACH(u
, m
->units
, i
)
2816 if (UNIT_VTABLE(u
)->timezone_change
)
2817 UNIT_VTABLE(u
)->timezone_change(u
);
2822 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2823 Manager
*m
= userdata
;
2826 assert(m
->idle_pipe
[2] == fd
);
2828 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2829 * now turn off any further console output if there's at least one service that needs console access, so that
2830 * from now on our own output should not spill into that service's output anymore. After all, we support
2831 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2832 * exclusively without our interference. */
2833 m
->no_console_output
= m
->n_on_console
> 0;
2835 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2836 * by closing the pipes towards them, which is what they are waiting for. */
2837 manager_close_idle_pipe(m
);
2842 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2843 Manager
*m
= userdata
;
2850 manager_print_jobs_in_progress(m
);
2852 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2853 r
= sd_event_source_set_time(source
, next
);
2857 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2860 int manager_loop(Manager
*m
) {
2861 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2865 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2867 manager_check_finished(m
);
2869 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2870 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2872 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2874 while (m
->objective
== MANAGER_OK
) {
2877 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2880 if (!ratelimit_below(&rl
)) {
2881 /* Yay, something is going seriously wrong, pause a little */
2882 log_warning("Looping too fast. Throttling execution a little.");
2886 if (manager_dispatch_load_queue(m
) > 0)
2889 if (manager_dispatch_gc_job_queue(m
) > 0)
2892 if (manager_dispatch_gc_unit_queue(m
) > 0)
2895 if (manager_dispatch_cleanup_queue(m
) > 0)
2898 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2901 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2904 if (manager_dispatch_dbus_queue(m
) > 0)
2907 /* Sleep for half the watchdog time */
2908 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2909 wait_usec
= m
->runtime_watchdog
/ 2;
2913 wait_usec
= USEC_INFINITY
;
2915 r
= sd_event_run(m
->event
, wait_usec
);
2917 return log_error_errno(r
, "Failed to run event loop: %m");
2920 return m
->objective
;
2923 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2924 _cleanup_free_
char *n
= NULL
;
2925 sd_id128_t invocation_id
;
2933 r
= unit_name_from_dbus_path(s
, &n
);
2937 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2938 * as invocation ID. */
2939 r
= sd_id128_from_string(n
, &invocation_id
);
2941 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2947 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2948 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2949 SD_ID128_FORMAT_VAL(invocation_id
));
2952 /* If this didn't work, we check if this is a unit name */
2953 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2954 _cleanup_free_
char *nn
= NULL
;
2957 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2958 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2961 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2969 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2979 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2983 r
= safe_atou(p
, &id
);
2987 j
= manager_get_job(m
, id
);
2996 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2999 _cleanup_free_
char *p
= NULL
;
3003 if (!MANAGER_IS_SYSTEM(m
))
3006 audit_fd
= get_audit_fd();
3010 /* Don't generate audit events if the service was already
3011 * started and we're just deserializing */
3012 if (MANAGER_IS_RELOADING(m
))
3015 if (u
->type
!= UNIT_SERVICE
)
3018 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3020 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3024 msg
= strjoina("unit=", p
);
3025 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3027 /* We aren't allowed to send audit messages?
3028 * Then let's not retry again. */
3031 log_warning_errno(errno
, "Failed to send audit message: %m");
3037 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3038 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3039 _cleanup_free_
char *message
= NULL
;
3040 _cleanup_close_
int fd
= -1;
3043 /* Don't generate plymouth events if the service was already
3044 * started and we're just deserializing */
3045 if (MANAGER_IS_RELOADING(m
))
3048 if (!MANAGER_IS_SYSTEM(m
))
3051 if (detect_container() > 0)
3054 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3057 /* We set SOCK_NONBLOCK here so that we rather drop the
3058 * message then wait for plymouth */
3059 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3061 log_error_errno(errno
, "socket() failed: %m");
3065 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3066 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3067 log_error_errno(errno
, "connect() failed: %m");
3071 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3077 if (write(fd
, message
, n
+ 1) != n
+ 1)
3078 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3079 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3082 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3088 fd
= open_serialization_fd("systemd-state");
3092 f
= fdopen(fd
, "w+");
3102 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3107 /* The following timestamps only apply to the host system, hence only serialize them there */
3109 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3110 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3111 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3112 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3115 int manager_serialize(
3119 bool switching_root
) {
3131 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3133 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3134 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3135 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3136 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3137 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3138 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3139 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3141 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3142 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3144 t
= show_status_to_string(m
->show_status
);
3146 (void) serialize_item(f
, "show-status", t
);
3148 if (m
->log_level_overridden
)
3149 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3150 if (m
->log_target_overridden
)
3151 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3153 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3154 _cleanup_free_
char *joined
= NULL
;
3156 if (!manager_timestamp_shall_serialize(q
))
3159 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3163 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3166 if (!switching_root
)
3167 (void) serialize_strv(f
, "env", m
->client_environment
);
3169 if (m
->notify_fd
>= 0) {
3170 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3174 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3177 if (m
->cgroups_agent_fd
>= 0) {
3178 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3183 if (m
->user_lookup_fds
[0] >= 0) {
3186 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3188 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3190 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3192 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3194 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3197 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3199 r
= dynamic_user_serialize(m
, f
, fds
);
3203 manager_serialize_uid_refs(m
, f
);
3204 manager_serialize_gid_refs(m
, f
);
3206 r
= exec_runtime_serialize(m
, f
, fds
);
3210 (void) fputc('\n', f
);
3212 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3220 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3225 r
= fflush_and_check(f
);
3227 return log_error_errno(r
, "Failed to flush serialization: %m");
3229 r
= bus_fdset_add_all(m
, fds
);
3231 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3236 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3240 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3244 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3247 r
= unit_deserialize(u
, f
, fds
);
3251 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3257 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3258 const char *unit_name
;
3262 _cleanup_free_
char *line
= NULL
;
3264 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3266 return log_error_errno(r
, "Failed to read serialization line: %m");
3270 unit_name
= strstrip(line
);
3272 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3276 r
= unit_deserialize_skip(f
);
3285 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3291 log_debug("Deserializing state...");
3293 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3294 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3296 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3299 _cleanup_free_
char *line
= NULL
;
3300 const char *val
, *l
;
3302 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3304 return log_error_errno(r
, "Failed to read serialization line: %m");
3309 if (isempty(l
)) /* end marker */
3312 if ((val
= startswith(l
, "current-job-id="))) {
3315 if (safe_atou32(val
, &id
) < 0)
3316 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3318 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3320 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3323 if (safe_atou32(val
, &n
) < 0)
3324 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3326 m
->n_installed_jobs
+= n
;
3328 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3331 if (safe_atou32(val
, &n
) < 0)
3332 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3334 m
->n_failed_jobs
+= n
;
3336 } else if ((val
= startswith(l
, "taint-usr="))) {
3339 b
= parse_boolean(val
);
3341 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3343 m
->taint_usr
= m
->taint_usr
|| b
;
3345 } else if ((val
= startswith(l
, "ready-sent="))) {
3348 b
= parse_boolean(val
);
3350 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3352 m
->ready_sent
= m
->ready_sent
|| b
;
3354 } else if ((val
= startswith(l
, "taint-logged="))) {
3357 b
= parse_boolean(val
);
3359 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3361 m
->taint_logged
= m
->taint_logged
|| b
;
3363 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3366 b
= parse_boolean(val
);
3368 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3370 m
->service_watchdogs
= b
;
3372 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3375 b
= parse_boolean(val
);
3377 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3379 m
->honor_device_enumeration
= b
;
3381 } else if ((val
= startswith(l
, "show-status="))) {
3384 s
= show_status_from_string(val
);
3386 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3388 manager_set_show_status(m
, s
);
3390 } else if ((val
= startswith(l
, "log-level-override="))) {
3393 level
= log_level_from_string(val
);
3395 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3397 manager_override_log_level(m
, level
);
3399 } else if ((val
= startswith(l
, "log-target-override="))) {
3402 target
= log_target_from_string(val
);
3404 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3406 manager_override_log_target(m
, target
);
3408 } else if (startswith(l
, "env=")) {
3409 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3411 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3413 } else if ((val
= startswith(l
, "notify-fd="))) {
3416 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3417 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3419 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3420 safe_close(m
->notify_fd
);
3421 m
->notify_fd
= fdset_remove(fds
, fd
);
3424 } else if ((val
= startswith(l
, "notify-socket="))) {
3425 r
= free_and_strdup(&m
->notify_socket
, val
);
3429 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3432 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3433 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3435 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3436 safe_close(m
->cgroups_agent_fd
);
3437 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3440 } else if ((val
= startswith(l
, "user-lookup="))) {
3443 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3444 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3446 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3447 safe_close_pair(m
->user_lookup_fds
);
3448 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3449 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3452 } else if ((val
= startswith(l
, "dynamic-user=")))
3453 dynamic_user_deserialize_one(m
, val
, fds
);
3454 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3455 manager_deserialize_uid_refs_one(m
, val
);
3456 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3457 manager_deserialize_gid_refs_one(m
, val
);
3458 else if ((val
= startswith(l
, "exec-runtime=")))
3459 exec_runtime_deserialize_one(m
, val
, fds
);
3460 else if ((val
= startswith(l
, "subscribed="))) {
3462 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3468 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3469 val
= startswith(l
, manager_timestamp_to_string(q
));
3473 val
= startswith(val
, "-timestamp=");
3478 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3479 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3480 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3481 log_notice("Unknown serialization item '%s', ignoring.", l
);
3485 return manager_deserialize_units(m
, f
, fds
);
3488 int manager_reload(Manager
*m
) {
3489 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3490 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3491 _cleanup_fclose_
FILE *f
= NULL
;
3496 r
= manager_open_serialization(m
, &f
);
3498 return log_error_errno(r
, "Failed to create serialization file: %m");
3504 /* We are officially in reload mode from here on. */
3505 reloading
= manager_reloading_start(m
);
3507 r
= manager_serialize(m
, f
, fds
, false);
3511 if (fseeko(f
, 0, SEEK_SET
) < 0)
3512 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3514 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3517 bus_manager_send_reloading(m
, true);
3519 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3520 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3523 manager_clear_jobs_and_units(m
);
3524 lookup_paths_flush_generator(&m
->lookup_paths
);
3525 lookup_paths_free(&m
->lookup_paths
);
3526 exec_runtime_vacuum(m
);
3527 dynamic_user_vacuum(m
, false);
3528 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3529 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3531 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3533 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3535 (void) manager_run_environment_generators(m
);
3536 (void) manager_run_generators(m
);
3538 lookup_paths_log(&m
->lookup_paths
);
3540 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3541 manager_free_unit_name_maps(m
);
3543 /* First, enumerate what we can from kernel and suchlike */
3544 manager_enumerate_perpetual(m
);
3545 manager_enumerate(m
);
3547 /* Second, deserialize our stored data */
3548 r
= manager_deserialize(m
, f
, fds
);
3550 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3552 /* We don't need the serialization anymore */
3555 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3556 (void) manager_setup_notify(m
);
3557 (void) manager_setup_cgroups_agent(m
);
3558 (void) manager_setup_user_lookup_fd(m
);
3560 /* Third, fire things up! */
3561 manager_coldplug(m
);
3563 /* Clean up runtime objects no longer referenced */
3566 /* Consider the reload process complete now. */
3567 assert(m
->n_reloading
> 0);
3570 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3571 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3572 * let's always set the flag here for safety. */
3573 m
->honor_device_enumeration
= true;
3577 m
->send_reloading_done
= true;
3581 void manager_reset_failed(Manager
*m
) {
3587 HASHMAP_FOREACH(u
, m
->units
, i
)
3588 unit_reset_failed(u
);
3591 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3597 /* Returns true if the unit is inactive or going down */
3598 u
= manager_get_unit(m
, name
);
3602 return unit_inactive_or_pending(u
);
3605 static void log_taint_string(Manager
*m
) {
3606 _cleanup_free_
char *taint
= NULL
;
3610 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3613 m
->taint_logged
= true; /* only check for taint once */
3615 taint
= manager_taint_string(m
);
3619 log_struct(LOG_NOTICE
,
3620 LOG_MESSAGE("System is tainted: %s", taint
),
3622 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3625 static void manager_notify_finished(Manager
*m
) {
3626 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3627 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3629 if (MANAGER_IS_TEST_RUN(m
))
3632 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3633 char ts
[FORMAT_TIMESPAN_MAX
];
3634 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3637 size_t size
= sizeof buf
;
3639 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3640 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3641 * negative values. */
3643 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3644 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3645 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3646 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3648 if (firmware_usec
> 0)
3649 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3650 if (loader_usec
> 0)
3651 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3653 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3655 /* The initrd case on bare-metal*/
3656 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3657 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3659 log_struct(LOG_INFO
,
3660 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3661 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3662 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3663 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3664 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3666 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3667 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3668 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3669 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3671 /* The initrd-less case on bare-metal*/
3673 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3676 log_struct(LOG_INFO
,
3677 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3678 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3679 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3680 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3682 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3683 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3684 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3687 /* The container and --user case */
3688 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3689 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3691 log_struct(LOG_INFO
,
3692 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3693 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3694 LOG_MESSAGE("Startup finished in %s.",
3695 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3698 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3701 m
->ready_sent
? "STATUS=Startup finished in %s."
3703 "STATUS=Startup finished in %s.",
3704 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3705 m
->ready_sent
= true;
3707 log_taint_string(m
);
3710 static void manager_send_ready(Manager
*m
) {
3713 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3714 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3717 m
->ready_sent
= true;
3721 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3724 static void manager_check_basic_target(Manager
*m
) {
3729 /* Small shortcut */
3730 if (m
->ready_sent
&& m
->taint_logged
)
3733 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3734 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3737 /* For user managers, send out READY=1 as soon as we reach basic.target */
3738 manager_send_ready(m
);
3740 /* Log the taint string as soon as we reach basic.target */
3741 log_taint_string(m
);
3744 void manager_check_finished(Manager
*m
) {
3747 if (MANAGER_IS_RELOADING(m
))
3750 /* Verify that we have entered the event loop already, and not left it again. */
3751 if (!MANAGER_IS_RUNNING(m
))
3754 manager_check_basic_target(m
);
3756 if (hashmap_size(m
->jobs
) > 0) {
3757 if (m
->jobs_in_progress_event_source
)
3758 /* Ignore any failure, this is only for feedback */
3759 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3764 manager_flip_auto_status(m
, false);
3766 /* Notify Type=idle units that we are done now */
3767 manager_close_idle_pipe(m
);
3769 /* Turn off confirm spawn now */
3770 m
->confirm_spawn
= NULL
;
3772 /* No need to update ask password status when we're going non-interactive */
3773 manager_close_ask_password(m
);
3775 /* This is no longer the first boot */
3776 manager_set_first_boot(m
, false);
3778 if (MANAGER_IS_FINISHED(m
))
3781 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3783 manager_notify_finished(m
);
3785 manager_invalidate_startup_units(m
);
3788 static bool generator_path_any(const char* const* paths
) {
3792 /* Optimize by skipping the whole process by not creating output directories
3793 * if no generators are found. */
3794 STRV_FOREACH(path
, (char**) paths
)
3795 if (access(*path
, F_OK
) == 0)
3797 else if (errno
!= ENOENT
)
3798 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3803 static const char *const system_env_generator_binary_paths
[] = {
3804 "/run/systemd/system-environment-generators",
3805 "/etc/systemd/system-environment-generators",
3806 "/usr/local/lib/systemd/system-environment-generators",
3807 SYSTEM_ENV_GENERATOR_PATH
,
3811 static const char *const user_env_generator_binary_paths
[] = {
3812 "/run/systemd/user-environment-generators",
3813 "/etc/systemd/user-environment-generators",
3814 "/usr/local/lib/systemd/user-environment-generators",
3815 USER_ENV_GENERATOR_PATH
,
3819 static int manager_run_environment_generators(Manager
*m
) {
3820 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3821 const char *const *paths
;
3823 [STDOUT_GENERATE
] = &tmp
,
3824 [STDOUT_COLLECT
] = &tmp
,
3825 [STDOUT_CONSUME
] = &m
->transient_environment
,
3829 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3832 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3834 if (!generator_path_any(paths
))
3837 RUN_WITH_UMASK(0022)
3838 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3839 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3843 static int manager_run_generators(Manager
*m
) {
3844 _cleanup_strv_free_
char **paths
= NULL
;
3845 const char *argv
[5];
3850 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3853 paths
= generator_binary_paths(m
->unit_file_scope
);
3857 if (!generator_path_any((const char* const*) paths
))
3860 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3862 log_error_errno(r
, "Failed to create generator directories: %m");
3866 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3867 argv
[1] = m
->lookup_paths
.generator
;
3868 argv
[2] = m
->lookup_paths
.generator_early
;
3869 argv
[3] = m
->lookup_paths
.generator_late
;
3872 RUN_WITH_UMASK(0022)
3873 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3874 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3879 lookup_paths_trim_generator(&m
->lookup_paths
);
3883 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3888 if (strv_isempty(plus
))
3891 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3895 sanitize_environment(a
);
3897 return strv_free_and_replace(m
->transient_environment
, a
);
3900 int manager_client_environment_modify(
3905 char **a
= NULL
, **b
= NULL
, **l
;
3909 if (strv_isempty(minus
) && strv_isempty(plus
))
3912 l
= m
->client_environment
;
3914 if (!strv_isempty(minus
)) {
3915 a
= strv_env_delete(l
, 1, minus
);
3922 if (!strv_isempty(plus
)) {
3923 b
= strv_env_merge(2, l
, plus
);
3932 if (m
->client_environment
!= l
)
3933 strv_free(m
->client_environment
);
3940 m
->client_environment
= sanitize_environment(l
);
3944 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3950 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3958 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3963 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3964 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3966 if (!default_rlimit
[i
])
3969 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3977 void manager_recheck_dbus(Manager
*m
) {
3980 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3981 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3982 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3983 * while in the user instance we can assume it's already there. */
3985 if (MANAGER_IS_RELOADING(m
))
3986 return; /* don't check while we are reloading… */
3988 if (manager_dbus_is_running(m
, false)) {
3989 (void) bus_init_api(m
);
3991 if (MANAGER_IS_SYSTEM(m
))
3992 (void) bus_init_system(m
);
3994 (void) bus_done_api(m
);
3996 if (MANAGER_IS_SYSTEM(m
))
3997 (void) bus_done_system(m
);
4001 static bool manager_journal_is_running(Manager
*m
) {
4006 if (MANAGER_IS_TEST_RUN(m
))
4009 /* If we are the user manager we can safely assume that the journal is up */
4010 if (!MANAGER_IS_SYSTEM(m
))
4013 /* Check that the socket is not only up, but in RUNNING state */
4014 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4017 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4020 /* Similar, check if the daemon itself is fully up, too */
4021 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4024 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4030 void disable_printk_ratelimit(void) {
4031 /* Disable kernel's printk ratelimit.
4033 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4034 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4035 * setting takes precedence. */
4038 r
= sysctl_write("kernel/printk_devkmsg", "on");
4040 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4043 void manager_recheck_journal(Manager
*m
) {
4047 /* Don't bother with this unless we are in the special situation of being PID 1 */
4048 if (getpid_cached() != 1)
4051 /* Don't check this while we are reloading, things might still change */
4052 if (MANAGER_IS_RELOADING(m
))
4055 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4056 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4057 * an activation ourselves we can't fulfill. */
4058 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4062 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4064 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4066 if (!MANAGER_IS_SYSTEM(m
))
4069 if (m
->show_status
!= mode
)
4070 log_debug("%s showing of status.",
4071 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4072 m
->show_status
= mode
;
4074 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4075 (void) touch("/run/systemd/show-status");
4077 (void) unlink("/run/systemd/show-status");
4080 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4083 if (!MANAGER_IS_SYSTEM(m
))
4086 if (m
->no_console_output
)
4089 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4092 /* If we cannot find out the status properly, just proceed. */
4093 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4096 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4099 const char *manager_get_confirm_spawn(Manager
*m
) {
4100 static int last_errno
= 0;
4106 /* Here's the deal: we want to test the validity of the console but don't want
4107 * PID1 to go through the whole console process which might block. But we also
4108 * want to warn the user only once if something is wrong with the console so we
4109 * cannot do the sanity checks after spawning our children. So here we simply do
4110 * really basic tests to hopefully trap common errors.
4112 * If the console suddenly disappear at the time our children will really it
4113 * then they will simply fail to acquire it and a positive answer will be
4114 * assumed. New children will fallback to /dev/console though.
4116 * Note: TTYs are devices that can come and go any time, and frequently aren't
4117 * available yet during early boot (consider a USB rs232 dongle...). If for any
4118 * reason the configured console is not ready, we fallback to the default
4121 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4122 return m
->confirm_spawn
;
4124 if (stat(m
->confirm_spawn
, &st
) < 0) {
4129 if (!S_ISCHR(st
.st_mode
)) {
4135 return m
->confirm_spawn
;
4138 if (last_errno
!= r
)
4139 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4141 return "/dev/console";
4144 void manager_set_first_boot(Manager
*m
, bool b
) {
4147 if (!MANAGER_IS_SYSTEM(m
))
4150 if (m
->first_boot
!= (int) b
) {
4152 (void) touch("/run/systemd/first-boot");
4154 (void) unlink("/run/systemd/first-boot");
4160 void manager_disable_confirm_spawn(void) {
4161 (void) touch("/run/systemd/confirm_spawn_disabled");
4164 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4165 if (!m
->confirm_spawn
)
4168 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4171 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4174 /* If m is NULL, assume we're after shutdown and let the messages through. */
4176 if (m
&& !manager_get_show_status(m
, type
))
4179 /* XXX We should totally drop the check for ephemeral here
4180 * and thus effectively make 'Type=idle' pointless. */
4181 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4184 va_start(ap
, format
);
4185 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4189 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4190 char p
[strlen(path
)+1];
4196 path_simplify(p
, false);
4198 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4201 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4206 assert(u
->manager
== m
);
4208 size
= set_size(m
->failed_units
);
4211 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4215 if (set_put(m
->failed_units
, u
) < 0)
4218 (void) set_remove(m
->failed_units
, u
);
4220 if (set_size(m
->failed_units
) != size
)
4221 bus_manager_send_change_signal(m
);
4226 ManagerState
manager_state(Manager
*m
) {
4231 /* Did we ever finish booting? If not then we are still starting up */
4232 if (!MANAGER_IS_FINISHED(m
)) {
4234 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4235 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4236 return MANAGER_INITIALIZING
;
4238 return MANAGER_STARTING
;
4241 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4242 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4243 if (u
&& unit_active_or_pending(u
))
4244 return MANAGER_STOPPING
;
4246 if (MANAGER_IS_SYSTEM(m
)) {
4247 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4248 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4249 if (u
&& unit_active_or_pending(u
))
4250 return MANAGER_MAINTENANCE
;
4252 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4253 if (u
&& unit_active_or_pending(u
))
4254 return MANAGER_MAINTENANCE
;
4257 /* Are there any failed units? If so, we are in degraded mode */
4258 if (set_size(m
->failed_units
) > 0)
4259 return MANAGER_DEGRADED
;
4261 return MANAGER_RUNNING
;
4264 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4266 static void manager_unref_uid_internal(
4271 int (*_clean_ipc
)(uid_t uid
)) {
4277 assert(uid_is_valid(uid
));
4280 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4281 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4283 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4284 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4285 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4286 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4288 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4289 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4291 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4294 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4296 n
= c
& ~DESTROY_IPC_FLAG
;
4300 if (destroy_now
&& n
== 0) {
4301 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4303 if (c
& DESTROY_IPC_FLAG
) {
4304 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4305 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4307 (void) _clean_ipc(uid
);
4310 c
= n
| (c
& DESTROY_IPC_FLAG
);
4311 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4315 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4316 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4319 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4320 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4323 static int manager_ref_uid_internal(
4334 assert(uid_is_valid(uid
));
4336 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4337 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4339 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4340 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4342 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4345 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4349 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4351 n
= c
& ~DESTROY_IPC_FLAG
;
4354 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4357 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4359 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4362 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4363 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4366 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4367 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4370 static void manager_vacuum_uid_refs_internal(
4373 int (*_clean_ipc
)(uid_t uid
)) {
4382 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4386 uid
= PTR_TO_UID(k
);
4387 c
= PTR_TO_UINT32(p
);
4389 n
= c
& ~DESTROY_IPC_FLAG
;
4393 if (c
& DESTROY_IPC_FLAG
) {
4394 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4395 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4397 (void) _clean_ipc(uid
);
4400 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4404 void manager_vacuum_uid_refs(Manager
*m
) {
4405 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4408 void manager_vacuum_gid_refs(Manager
*m
) {
4409 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4412 static void manager_serialize_uid_refs_internal(
4416 const char *field_name
) {
4426 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4427 * of it is better rebuild after a reload/reexec. */
4429 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4433 uid
= PTR_TO_UID(k
);
4434 c
= PTR_TO_UINT32(p
);
4436 if (!(c
& DESTROY_IPC_FLAG
))
4439 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4443 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4444 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4447 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4448 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4451 static void manager_deserialize_uid_refs_one_internal(
4454 const char *value
) {
4464 r
= parse_uid(value
, &uid
);
4465 if (r
< 0 || uid
== 0) {
4466 log_debug("Unable to parse UID reference serialization");
4470 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4476 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4477 if (c
& DESTROY_IPC_FLAG
)
4480 c
|= DESTROY_IPC_FLAG
;
4482 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4484 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4489 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4490 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4493 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4494 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4497 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4501 char unit_name
[UNIT_NAME_MAX
+1];
4504 Manager
*m
= userdata
;
4512 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4513 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4514 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4516 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4518 if (IN_SET(errno
, EINTR
, EAGAIN
))
4521 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4524 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4525 log_warning("Received too short user lookup message, ignoring.");
4529 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4530 log_warning("Received too long user lookup message, ignoring.");
4534 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4535 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4539 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4540 if (memchr(buffer
.unit_name
, 0, n
)) {
4541 log_warning("Received lookup message with embedded NUL character, ignoring.");
4545 buffer
.unit_name
[n
] = 0;
4546 u
= manager_get_unit(m
, buffer
.unit_name
);
4548 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4552 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4554 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4558 char *manager_taint_string(Manager
*m
) {
4559 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4563 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4564 * Only things that are detected at runtime should be tagged
4565 * here. For stuff that is set during compilation, emit a warning
4566 * in the configuration phase. */
4570 buf
= new(char, sizeof("split-usr:"
4574 "overflowuid-not-65534:"
4575 "overflowgid-not-65534:"));
4583 e
= stpcpy(e
, "split-usr:");
4585 if (access("/proc/cgroups", F_OK
) < 0)
4586 e
= stpcpy(e
, "cgroups-missing:");
4588 if (clock_is_localtime(NULL
) > 0)
4589 e
= stpcpy(e
, "local-hwclock:");
4591 r
= readlink_malloc("/var/run", &destination
);
4592 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4593 e
= stpcpy(e
, "var-run-bad:");
4595 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4596 if (r
>= 0 && !streq(overflowuid
, "65534"))
4597 e
= stpcpy(e
, "overflowuid-not-65534:");
4599 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4600 if (r
>= 0 && !streq(overflowgid
, "65534"))
4601 e
= stpcpy(e
, "overflowgid-not-65534:");
4603 /* remove the last ':' */
4610 void manager_ref_console(Manager
*m
) {
4616 void manager_unref_console(Manager
*m
) {
4618 assert(m
->n_on_console
> 0);
4621 if (m
->n_on_console
== 0)
4622 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4625 void manager_override_log_level(Manager
*m
, int level
) {
4626 _cleanup_free_
char *s
= NULL
;
4629 if (!m
->log_level_overridden
) {
4630 m
->original_log_level
= log_get_max_level();
4631 m
->log_level_overridden
= true;
4634 (void) log_level_to_string_alloc(level
, &s
);
4635 log_info("Setting log level to %s.", strna(s
));
4637 log_set_max_level(level
);
4640 void manager_restore_original_log_level(Manager
*m
) {
4641 _cleanup_free_
char *s
= NULL
;
4644 if (!m
->log_level_overridden
)
4647 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4648 log_info("Restoring log level to original (%s).", strna(s
));
4650 log_set_max_level(m
->original_log_level
);
4651 m
->log_level_overridden
= false;
4654 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4657 if (!m
->log_target_overridden
) {
4658 m
->original_log_target
= log_get_target();
4659 m
->log_target_overridden
= true;
4662 log_info("Setting log target to %s.", log_target_to_string(target
));
4663 log_set_target(target
);
4666 void manager_restore_original_log_target(Manager
*m
) {
4669 if (!m
->log_target_overridden
)
4672 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4674 log_set_target(m
->original_log_target
);
4675 m
->log_target_overridden
= false;
4678 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4680 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4681 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4682 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4686 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4687 [MANAGER_INITIALIZING
] = "initializing",
4688 [MANAGER_STARTING
] = "starting",
4689 [MANAGER_RUNNING
] = "running",
4690 [MANAGER_DEGRADED
] = "degraded",
4691 [MANAGER_MAINTENANCE
] = "maintenance",
4692 [MANAGER_STOPPING
] = "stopping",
4695 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4697 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4698 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4699 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4700 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4701 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4702 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4703 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4704 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4705 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4706 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4707 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4708 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4709 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4710 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4711 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4712 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4713 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4714 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4715 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4718 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4720 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4721 [OOM_CONTINUE
] = "continue",
4722 [OOM_STOP
] = "stop",
4723 [OOM_KILL
] = "kill",
4726 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);