2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/epoll.h>
27 #include <sys/inotify.h>
28 #include <sys/ioctl.h>
29 #include <sys/reboot.h>
30 #include <sys/timerfd.h>
38 #include "sd-daemon.h"
39 #include "sd-messages.h"
41 #include "alloc-util.h"
43 #include "boot-timestamps.h"
44 #include "bus-common-errors.h"
45 #include "bus-error.h"
46 #include "bus-kernel.h"
49 #include "dbus-manager.h"
50 #include "dbus-unit.h"
54 #include "exit-status.h"
60 #include "locale-setup.h"
66 #include "parse-util.h"
67 #include "path-lookup.h"
68 #include "path-util.h"
69 #include "process-util.h"
70 #include "ratelimit.h"
72 #include "signal-util.h"
74 #include "stat-util.h"
75 #include "string-table.h"
76 #include "string-util.h"
78 #include "terminal-util.h"
79 #include "time-util.h"
80 #include "transaction.h"
81 #include "umask-util.h"
82 #include "unit-name.h"
87 #define NOTIFY_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 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
95 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
96 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
97 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
98 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
99 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
100 static int manager_run_generators(Manager
*m
);
101 static void manager_undo_generators(Manager
*m
);
103 static void manager_watch_jobs_in_progress(Manager
*m
) {
109 if (m
->jobs_in_progress_event_source
)
112 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
113 r
= sd_event_add_time(
115 &m
->jobs_in_progress_event_source
,
118 manager_dispatch_jobs_in_progress
, m
);
122 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
125 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
127 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
130 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
131 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
135 p
= mempset(p
, ' ', pos
-2);
136 p
= stpcpy(p
, ANSI_RED
);
140 if (pos
> 0 && pos
<= width
) {
141 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
145 p
= stpcpy(p
, ANSI_NORMAL
);
148 p
= stpcpy(p
, ANSI_RED
);
151 p
= mempset(p
, ' ', width
-1-pos
);
152 strcpy(p
, ANSI_NORMAL
);
156 void manager_flip_auto_status(Manager
*m
, bool enable
) {
160 if (m
->show_status
== SHOW_STATUS_AUTO
)
161 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
163 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
164 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
168 static void manager_print_jobs_in_progress(Manager
*m
) {
169 _cleanup_free_
char *job_of_n
= NULL
;
172 unsigned counter
= 0, print_nr
;
173 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
175 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
179 assert(m
->n_running_jobs
> 0);
181 manager_flip_auto_status(m
, true);
183 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
185 HASHMAP_FOREACH(j
, m
->jobs
, i
)
186 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
189 /* m->n_running_jobs must be consistent with the contents of m->jobs,
190 * so the above loop must have succeeded in finding j. */
191 assert(counter
== print_nr
+ 1);
194 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
196 cylon_pos
= 14 - cylon_pos
;
197 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
199 m
->jobs_in_progress_iteration
++;
201 if (m
->n_running_jobs
> 1) {
202 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
206 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
207 if (job_get_timeout(j
, &x
) > 0)
208 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
210 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
211 "%sA %s job is running for %s (%s / %s)",
213 job_type_to_string(j
->type
),
214 unit_description(j
->unit
),
218 static int have_ask_password(void) {
219 _cleanup_closedir_
DIR *dir
;
221 dir
= opendir("/run/systemd/ask-password");
234 if (!de
&& errno
> 0)
239 if (startswith(de
->d_name
, "ask."))
244 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
245 int fd
, uint32_t revents
, void *userdata
) {
246 Manager
*m
= userdata
;
252 m
->have_ask_password
= have_ask_password();
253 if (m
->have_ask_password
< 0)
254 /* Log error but continue. Negative have_ask_password
255 * is treated as unknown status. */
256 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
261 static void manager_close_ask_password(Manager
*m
) {
264 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
265 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
266 m
->have_ask_password
= -EINVAL
;
269 static int manager_check_ask_password(Manager
*m
) {
274 if (!m
->ask_password_event_source
) {
275 assert(m
->ask_password_inotify_fd
< 0);
277 mkdir_p_label("/run/systemd/ask-password", 0755);
279 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
280 if (m
->ask_password_inotify_fd
< 0)
281 return log_error_errno(errno
, "inotify_init1() failed: %m");
283 if (inotify_add_watch(m
->ask_password_inotify_fd
, "/run/systemd/ask-password", IN_CREATE
|IN_DELETE
|IN_MOVE
) < 0) {
284 log_error_errno(errno
, "Failed to add watch on /run/systemd/ask-password: %m");
285 manager_close_ask_password(m
);
289 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
290 m
->ask_password_inotify_fd
, EPOLLIN
,
291 manager_dispatch_ask_password_fd
, m
);
293 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
294 manager_close_ask_password(m
);
298 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
300 /* Queries might have been added meanwhile... */
301 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
302 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
305 return m
->have_ask_password
;
308 static int manager_watch_idle_pipe(Manager
*m
) {
313 if (m
->idle_pipe_event_source
)
316 if (m
->idle_pipe
[2] < 0)
319 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
321 return log_error_errno(r
, "Failed to watch idle pipe: %m");
323 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
328 static void manager_close_idle_pipe(Manager
*m
) {
331 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
333 safe_close_pair(m
->idle_pipe
);
334 safe_close_pair(m
->idle_pipe
+ 2);
337 static int manager_setup_time_change(Manager
*m
) {
340 /* We only care for the cancellation event, hence we set the
341 * timeout to the latest possible value. */
342 struct itimerspec its
= {
343 .it_value
.tv_sec
= TIME_T_MAX
,
347 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX
));
352 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
353 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
355 m
->time_change_fd
= timerfd_create(CLOCK_REALTIME
, TFD_NONBLOCK
|TFD_CLOEXEC
);
356 if (m
->time_change_fd
< 0)
357 return log_error_errno(errno
, "Failed to create timerfd: %m");
359 if (timerfd_settime(m
->time_change_fd
, TFD_TIMER_ABSTIME
|TFD_TIMER_CANCEL_ON_SET
, &its
, NULL
) < 0) {
360 log_debug_errno(errno
, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
361 m
->time_change_fd
= safe_close(m
->time_change_fd
);
365 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
367 return log_error_errno(r
, "Failed to create time change event source: %m");
369 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
371 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
376 static int enable_special_signals(Manager
*m
) {
377 _cleanup_close_
int fd
= -1;
384 /* Enable that we get SIGINT on control-alt-del. In containers
385 * this will fail with EPERM (older) or EINVAL (newer), so
387 if (reboot(RB_DISABLE_CAD
) < 0 && errno
!= EPERM
&& errno
!= EINVAL
)
388 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
390 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
392 /* Support systems without virtual console */
394 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
396 /* Enable that we get SIGWINCH on kbrequest */
397 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
398 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
404 static int manager_setup_signals(Manager
*m
) {
405 struct sigaction sa
= {
406 .sa_handler
= SIG_DFL
,
407 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
414 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
416 /* We make liberal use of realtime signals here. On
417 * Linux/glibc we have 30 of them (with the exception of Linux
418 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
421 assert_se(sigemptyset(&mask
) == 0);
422 sigset_add_many(&mask
,
423 SIGCHLD
, /* Child died */
424 SIGTERM
, /* Reexecute daemon */
425 SIGHUP
, /* Reload configuration */
426 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
427 SIGUSR2
, /* systemd: dump status */
428 SIGINT
, /* Kernel sends us this on control-alt-del */
429 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
430 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
432 SIGRTMIN
+0, /* systemd: start default.target */
433 SIGRTMIN
+1, /* systemd: isolate rescue.target */
434 SIGRTMIN
+2, /* systemd: isolate emergency.target */
435 SIGRTMIN
+3, /* systemd: start halt.target */
436 SIGRTMIN
+4, /* systemd: start poweroff.target */
437 SIGRTMIN
+5, /* systemd: start reboot.target */
438 SIGRTMIN
+6, /* systemd: start kexec.target */
440 /* ... space for more special targets ... */
442 SIGRTMIN
+13, /* systemd: Immediate halt */
443 SIGRTMIN
+14, /* systemd: Immediate poweroff */
444 SIGRTMIN
+15, /* systemd: Immediate reboot */
445 SIGRTMIN
+16, /* systemd: Immediate kexec */
447 /* ... space for more immediate system state changes ... */
449 SIGRTMIN
+20, /* systemd: enable status messages */
450 SIGRTMIN
+21, /* systemd: disable status messages */
451 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
452 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
453 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
455 /* .. one free signal here ... */
457 #if !defined(__hppa64__) && !defined(__hppa__)
458 /* Apparently Linux on hppa has fewer RT
459 * signals (SIGRTMAX is SIGRTMIN+25 there),
460 * hence let's not try to make use of them
461 * here. Since these commands are accessible
462 * by different means and only really a safety
463 * net, the missing functionality on hppa
464 * shouldn't matter. */
466 SIGRTMIN
+26, /* systemd: set log target to journal-or-kmsg */
467 SIGRTMIN
+27, /* systemd: set log target to console */
468 SIGRTMIN
+28, /* systemd: set log target to kmsg */
469 SIGRTMIN
+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
471 /* ... one free signal here SIGRTMIN+30 ... */
474 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
476 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
477 if (m
->signal_fd
< 0)
480 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
484 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
486 /* Process signals a bit earlier than the rest of things, but
487 * later than notify_fd processing, so that the notify
488 * processing can still figure out to which process/service a
489 * message belongs, before we reap the process. */
490 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-5);
494 if (m
->running_as
== MANAGER_SYSTEM
)
495 return enable_special_signals(m
);
500 static void manager_clean_environment(Manager
*m
) {
503 /* Let's remove some environment variables that we
504 * need ourselves to communicate with our clients */
518 static int manager_default_environment(Manager
*m
) {
521 if (m
->running_as
== MANAGER_SYSTEM
) {
522 /* The system manager always starts with a clean
523 * environment for its children. It does not import
524 * the kernel or the parents exported variables.
526 * The initial passed environ is untouched to keep
527 * /proc/self/environ valid; it is used for tagging
528 * the init process inside containers. */
529 m
->environment
= strv_new("PATH=" DEFAULT_PATH
,
532 /* Import locale variables LC_*= from configuration */
533 locale_setup(&m
->environment
);
535 /* The user manager passes its own environment
536 * along to its children. */
537 m
->environment
= strv_copy(environ
);
543 manager_clean_environment(m
);
544 strv_sort(m
->environment
);
550 int manager_new(ManagerRunningAs running_as
, bool test_run
, Manager
**_m
) {
552 static const char * const unit_log_fields
[_MANAGER_RUNNING_AS_MAX
] = {
553 [MANAGER_SYSTEM
] = "UNIT=",
554 [MANAGER_USER
] = "USER_UNIT=",
557 static const char * const unit_log_format_strings
[_MANAGER_RUNNING_AS_MAX
] = {
558 [MANAGER_SYSTEM
] = "UNIT=%s",
559 [MANAGER_USER
] = "USER_UNIT=%s",
566 assert(running_as
>= 0);
567 assert(running_as
< _MANAGER_RUNNING_AS_MAX
);
569 m
= new0(Manager
, 1);
574 if (running_as
== MANAGER_SYSTEM
&& detect_container() <= 0)
575 boot_timestamps(&m
->userspace_timestamp
, &m
->firmware_timestamp
, &m
->loader_timestamp
);
578 m
->running_as
= running_as
;
579 m
->exit_code
= _MANAGER_EXIT_CODE_INVALID
;
580 m
->default_timer_accuracy_usec
= USEC_PER_MINUTE
;
581 m
->default_tasks_accounting
= true;
582 m
->default_tasks_max
= UINT64_C(512);
584 /* Prepare log fields we can use for structured logging */
585 m
->unit_log_field
= unit_log_fields
[running_as
];
586 m
->unit_log_format_string
= unit_log_format_strings
[running_as
];
588 m
->idle_pipe
[0] = m
->idle_pipe
[1] = m
->idle_pipe
[2] = m
->idle_pipe
[3] = -1;
590 m
->pin_cgroupfs_fd
= m
->notify_fd
= m
->signal_fd
= m
->time_change_fd
=
591 m
->dev_autofs_fd
= m
->private_listen_fd
= m
->kdbus_fd
= m
->cgroup_inotify_fd
= -1;
593 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
595 m
->ask_password_inotify_fd
= -1;
596 m
->have_ask_password
= -EINVAL
; /* we don't know */
599 m
->test_run
= test_run
;
601 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
602 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
604 r
= manager_default_environment(m
);
608 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
612 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
616 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
620 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
624 r
= sd_event_default(&m
->event
);
628 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
632 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
636 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
640 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
642 r
= manager_setup_signals(m
);
646 r
= manager_setup_cgroup(m
);
650 r
= manager_setup_time_change(m
);
654 m
->udev
= udev_new();
660 /* Note that we set up neither kdbus, nor the notify fd
661 * here. We do that after deserialization, since they might
662 * have gotten serialized across the reexec. */
664 m
->taint_usr
= dir_is_empty("/usr") > 0;
674 static int manager_setup_notify(Manager
*m
) {
680 if (m
->notify_fd
< 0) {
681 _cleanup_close_
int fd
= -1;
682 union sockaddr_union sa
= {
683 .sa
.sa_family
= AF_UNIX
,
685 static const int one
= 1;
687 /* First free all secondary fields */
688 m
->notify_socket
= mfree(m
->notify_socket
);
689 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
691 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
693 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
695 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
697 if (m
->running_as
== MANAGER_SYSTEM
)
698 m
->notify_socket
= strdup("/run/systemd/notify");
702 e
= getenv("XDG_RUNTIME_DIR");
704 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
708 m
->notify_socket
= strappend(e
, "/systemd/notify");
710 if (!m
->notify_socket
)
713 (void) mkdir_parents_label(m
->notify_socket
, 0755);
714 (void) unlink(m
->notify_socket
);
716 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
717 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
719 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
721 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
723 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
728 log_debug("Using notification socket %s", m
->notify_socket
);
731 if (!m
->notify_event_source
) {
732 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
734 return log_error_errno(r
, "Failed to allocate notify event source: %m");
736 /* Process signals a bit earlier than SIGCHLD, so that we can
737 * still identify to which service an exit message belongs */
738 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
740 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
742 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
748 static int manager_setup_kdbus(Manager
*m
) {
749 _cleanup_free_
char *p
= NULL
;
753 if (m
->test_run
|| m
->kdbus_fd
>= 0)
755 if (!is_kdbus_available())
756 return -ESOCKTNOSUPPORT
;
758 m
->kdbus_fd
= bus_kernel_create_bus(
759 m
->running_as
== MANAGER_SYSTEM
? "system" : "user",
760 m
->running_as
== MANAGER_SYSTEM
, &p
);
763 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
765 log_debug("Successfully set up kdbus on %s", p
);
770 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
771 bool try_bus_connect
;
781 (m
->running_as
== MANAGER_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
783 /* Try to connect to the buses, if possible. */
784 return bus_init(m
, try_bus_connect
);
787 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
793 while ((u
= m
->cleanup_queue
)) {
794 assert(u
->in_cleanup_queue
);
804 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
805 GC_OFFSET_UNSURE
, /* No clue */
806 GC_OFFSET_GOOD
, /* We still need this unit */
807 GC_OFFSET_BAD
, /* We don't need this unit anymore */
811 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
818 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
819 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
820 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
823 if (u
->in_cleanup_queue
)
826 if (unit_check_gc(u
))
829 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
833 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
834 unit_gc_sweep(other
, gc_marker
);
836 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
839 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
846 /* We were unable to find anything out about this entry, so
847 * let's investigate it later */
848 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
849 unit_add_to_gc_queue(u
);
853 /* We definitely know that this one is not useful anymore, so
854 * let's mark it for deletion */
855 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
856 unit_add_to_cleanup_queue(u
);
860 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
863 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
870 /* log_debug("Running GC..."); */
872 m
->gc_marker
+= _GC_OFFSET_MAX
;
873 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
876 gc_marker
= m
->gc_marker
;
878 while ((u
= m
->gc_queue
)) {
879 assert(u
->in_gc_queue
);
881 unit_gc_sweep(u
, gc_marker
);
883 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
884 u
->in_gc_queue
= false;
888 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
889 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
891 log_unit_debug(u
, "Collecting.");
892 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
893 unit_add_to_cleanup_queue(u
);
897 m
->n_in_gc_queue
= 0;
902 static void manager_clear_jobs_and_units(Manager
*m
) {
907 while ((u
= hashmap_first(m
->units
)))
910 manager_dispatch_cleanup_queue(m
);
912 assert(!m
->load_queue
);
913 assert(!m
->run_queue
);
914 assert(!m
->dbus_unit_queue
);
915 assert(!m
->dbus_job_queue
);
916 assert(!m
->cleanup_queue
);
917 assert(!m
->gc_queue
);
919 assert(hashmap_isempty(m
->jobs
));
920 assert(hashmap_isempty(m
->units
));
923 m
->n_running_jobs
= 0;
926 Manager
* manager_free(Manager
*m
) {
933 manager_clear_jobs_and_units(m
);
935 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
936 if (unit_vtable
[c
]->shutdown
)
937 unit_vtable
[c
]->shutdown(m
);
939 /* If we reexecute ourselves, we keep the root cgroup
941 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
943 manager_undo_generators(m
);
947 hashmap_free(m
->units
);
948 hashmap_free(m
->jobs
);
949 hashmap_free(m
->watch_pids1
);
950 hashmap_free(m
->watch_pids2
);
951 hashmap_free(m
->watch_bus
);
953 set_free(m
->startup_units
);
954 set_free(m
->failed_units
);
956 sd_event_source_unref(m
->signal_event_source
);
957 sd_event_source_unref(m
->notify_event_source
);
958 sd_event_source_unref(m
->time_change_event_source
);
959 sd_event_source_unref(m
->jobs_in_progress_event_source
);
960 sd_event_source_unref(m
->run_queue_event_source
);
962 safe_close(m
->signal_fd
);
963 safe_close(m
->notify_fd
);
964 safe_close(m
->time_change_fd
);
965 safe_close(m
->kdbus_fd
);
967 manager_close_ask_password(m
);
969 manager_close_idle_pipe(m
);
972 sd_event_unref(m
->event
);
974 free(m
->notify_socket
);
976 lookup_paths_free(&m
->lookup_paths
);
977 strv_free(m
->environment
);
979 hashmap_free(m
->cgroup_unit
);
980 set_free_free(m
->unit_path_cache
);
982 free(m
->switch_root
);
983 free(m
->switch_root_init
);
985 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
986 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
988 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
989 hashmap_free(m
->units_requiring_mounts_for
);
995 void manager_enumerate(Manager
*m
) {
1000 /* Let's ask every type to load all units from disk/kernel
1001 * that it might know */
1002 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1003 if (!unit_type_supported(c
)) {
1004 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1008 if (!unit_vtable
[c
]->enumerate
)
1011 unit_vtable
[c
]->enumerate(m
);
1014 manager_dispatch_load_queue(m
);
1017 static void manager_coldplug(Manager
*m
) {
1025 /* Then, let's set up their initial state. */
1026 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1028 /* ignore aliases */
1032 r
= unit_coldplug(u
);
1034 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1038 static void manager_build_unit_path_cache(Manager
*m
) {
1040 _cleanup_closedir_
DIR *d
= NULL
;
1045 set_free_free(m
->unit_path_cache
);
1047 m
->unit_path_cache
= set_new(&string_hash_ops
);
1048 if (!m
->unit_path_cache
) {
1049 log_error("Failed to allocate unit path cache.");
1053 /* This simply builds a list of files we know exist, so that
1054 * we don't always have to go to disk */
1056 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1061 if (errno
!= ENOENT
)
1062 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1066 while ((de
= readdir(d
))) {
1069 if (hidden_file(de
->d_name
))
1072 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1078 r
= set_consume(m
->unit_path_cache
, p
);
1083 d
= safe_closedir(d
);
1089 log_error_errno(r
, "Failed to build unit path cache: %m");
1091 set_free_free(m
->unit_path_cache
);
1092 m
->unit_path_cache
= NULL
;
1096 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1102 HASHMAP_FOREACH(u
, m
->units
, i
) {
1104 if (fdset_size(fds
) <= 0)
1107 if (!UNIT_VTABLE(u
)->distribute_fds
)
1110 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1114 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1119 dual_timestamp_get(&m
->generators_start_timestamp
);
1120 r
= manager_run_generators(m
);
1121 dual_timestamp_get(&m
->generators_finish_timestamp
);
1125 r
= lookup_paths_init(
1126 &m
->lookup_paths
, m
->running_as
, true,
1128 m
->generator_unit_path
,
1129 m
->generator_unit_path_early
,
1130 m
->generator_unit_path_late
);
1134 manager_build_unit_path_cache(m
);
1136 /* If we will deserialize make sure that during enumeration
1137 * this is already known, so we increase the counter here
1142 /* First, enumerate what we can from all config files */
1143 dual_timestamp_get(&m
->units_load_start_timestamp
);
1144 manager_enumerate(m
);
1145 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1147 /* Second, deserialize if there is something to deserialize */
1149 r
= manager_deserialize(m
, serialization
, fds
);
1151 /* Any fds left? Find some unit which wants them. This is
1152 * useful to allow container managers to pass some file
1153 * descriptors to us pre-initialized. This enables
1154 * socket-based activation of entire containers. */
1155 manager_distribute_fds(m
, fds
);
1157 /* We might have deserialized the notify fd, but if we didn't
1158 * then let's create the bus now */
1159 q
= manager_setup_notify(m
);
1160 if (q
< 0 && r
== 0)
1163 /* We might have deserialized the kdbus control fd, but if we
1164 * didn't, then let's create the bus now. */
1165 manager_setup_kdbus(m
);
1166 manager_connect_bus(m
, !!serialization
);
1167 bus_track_coldplug(m
, &m
->subscribed
, &m
->deserialized_subscribed
);
1169 /* Third, fire things up! */
1170 manager_coldplug(m
);
1172 if (serialization
) {
1173 assert(m
->n_reloading
> 0);
1176 /* Let's wait for the UnitNew/JobNew messages being
1177 * sent, before we notify that the reload is
1179 m
->send_reloading_done
= true;
1185 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
, Job
**_ret
) {
1190 assert(type
< _JOB_TYPE_MAX
);
1192 assert(mode
< _JOB_MODE_MAX
);
1194 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1195 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1197 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1198 return sd_bus_error_setf(e
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1200 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1202 type
= job_type_collapse(type
, unit
);
1204 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1208 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1209 mode
== JOB_IGNORE_DEPENDENCIES
|| mode
== JOB_IGNORE_REQUIREMENTS
,
1210 mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1214 if (mode
== JOB_ISOLATE
) {
1215 r
= transaction_add_isolate_jobs(tr
, m
);
1220 r
= transaction_activate(tr
, m
, mode
, e
);
1224 log_unit_debug(unit
,
1225 "Enqueued job %s/%s as %u", unit
->id
,
1226 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1229 *_ret
= tr
->anchor_job
;
1231 transaction_free(tr
);
1235 transaction_abort(tr
);
1236 transaction_free(tr
);
1240 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, sd_bus_error
*e
, Job
**ret
) {
1245 assert(type
< _JOB_TYPE_MAX
);
1247 assert(mode
< _JOB_MODE_MAX
);
1249 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1253 return manager_add_job(m
, type
, unit
, mode
, e
, ret
);
1256 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Job
**ret
) {
1257 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1261 assert(type
< _JOB_TYPE_MAX
);
1263 assert(mode
< _JOB_MODE_MAX
);
1265 r
= manager_add_job_by_name(m
, type
, name
, mode
, &error
, ret
);
1267 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1272 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1275 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1278 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1282 return hashmap_get(m
->units
, name
);
1285 unsigned manager_dispatch_load_queue(Manager
*m
) {
1291 /* Make sure we are not run recursively */
1292 if (m
->dispatching_load_queue
)
1295 m
->dispatching_load_queue
= true;
1297 /* Dispatches the load queue. Takes a unit from the queue and
1298 * tries to load its data until the queue is empty */
1300 while ((u
= m
->load_queue
)) {
1301 assert(u
->in_load_queue
);
1307 m
->dispatching_load_queue
= false;
1311 int manager_load_unit_prepare(
1323 assert(name
|| path
);
1325 /* This will prepare the unit for loading, but not actually
1326 * load anything from disk. */
1328 if (path
&& !is_path(path
))
1329 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1332 name
= basename(path
);
1334 t
= unit_name_to_type(name
);
1336 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1337 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1339 ret
= manager_get_unit(m
, name
);
1345 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1350 ret
->fragment_path
= strdup(path
);
1351 if (!ret
->fragment_path
) {
1357 r
= unit_add_name(ret
, name
);
1363 unit_add_to_load_queue(ret
);
1364 unit_add_to_dbus_queue(ret
);
1365 unit_add_to_gc_queue(ret
);
1373 int manager_load_unit(
1384 /* This will load the service information files, but not actually
1385 * start any services or anything. */
1387 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1391 manager_dispatch_load_queue(m
);
1394 *_ret
= unit_follow_merge(*_ret
);
1399 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1406 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1407 job_dump(j
, f
, prefix
);
1410 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1418 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1420 unit_dump(u
, f
, prefix
);
1423 void manager_clear_jobs(Manager
*m
) {
1428 while ((j
= hashmap_first(m
->jobs
)))
1429 /* No need to recurse. We're cancelling all jobs. */
1430 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1433 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1434 Manager
*m
= userdata
;
1440 while ((j
= m
->run_queue
)) {
1441 assert(j
->installed
);
1442 assert(j
->in_run_queue
);
1444 job_run_and_invalidate(j
);
1447 if (m
->n_running_jobs
> 0)
1448 manager_watch_jobs_in_progress(m
);
1450 if (m
->n_on_console
> 0)
1451 manager_watch_idle_pipe(m
);
1456 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1463 if (m
->dispatching_dbus_queue
)
1466 m
->dispatching_dbus_queue
= true;
1468 while ((u
= m
->dbus_unit_queue
)) {
1469 assert(u
->in_dbus_queue
);
1471 bus_unit_send_change_signal(u
);
1475 while ((j
= m
->dbus_job_queue
)) {
1476 assert(j
->in_dbus_queue
);
1478 bus_job_send_change_signal(j
);
1482 m
->dispatching_dbus_queue
= false;
1484 if (m
->send_reloading_done
) {
1485 m
->send_reloading_done
= false;
1487 bus_manager_send_reloading(m
, false);
1490 if (m
->queued_message
)
1491 bus_send_queued_message(m
);
1496 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, const char *buf
, size_t n
, FDSet
*fds
) {
1497 _cleanup_strv_free_
char **tags
= NULL
;
1504 tags
= strv_split(buf
, "\n\r");
1510 if (UNIT_VTABLE(u
)->notify_message
)
1511 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1513 log_unit_debug(u
, "Got notification message for unit. Ignoring.");
1516 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1517 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1518 Manager
*m
= userdata
;
1520 char buf
[NOTIFY_BUFFER_MAX
+1];
1521 struct iovec iovec
= {
1523 .iov_len
= sizeof(buf
)-1,
1526 struct cmsghdr cmsghdr
;
1527 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1528 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1530 struct msghdr msghdr
= {
1533 .msg_control
= &control
,
1534 .msg_controllen
= sizeof(control
),
1537 struct cmsghdr
*cmsg
;
1538 struct ucred
*ucred
= NULL
;
1541 int r
, *fd_array
= NULL
;
1546 assert(m
->notify_fd
== fd
);
1548 if (revents
!= EPOLLIN
) {
1549 log_warning("Got unexpected poll event for notify fd.");
1553 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1555 if (errno
== EAGAIN
|| errno
== EINTR
)
1561 CMSG_FOREACH(cmsg
, &msghdr
) {
1562 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1564 fd_array
= (int*) CMSG_DATA(cmsg
);
1565 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1567 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1568 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1569 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1571 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1578 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1580 close_many(fd_array
, n_fds
);
1585 if (!ucred
|| ucred
->pid
<= 0) {
1586 log_warning("Received notify message without valid credentials. Ignoring.");
1590 if ((size_t) n
>= sizeof(buf
)) {
1591 log_warning("Received notify message exceeded maximum size. Ignoring.");
1597 /* Notify every unit that might be interested, but try
1598 * to avoid notifying the same one multiple times. */
1599 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
1601 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1605 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(ucred
->pid
));
1606 if (u2
&& u2
!= u1
) {
1607 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1611 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(ucred
->pid
));
1612 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1613 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1618 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1620 if (fdset_size(fds
) > 0)
1621 log_warning("Got auxiliary fds with notification message, closing all.");
1626 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, const siginfo_t
*si
) {
1631 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1633 unit_unwatch_pid(u
, si
->si_pid
);
1634 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1637 static int manager_dispatch_sigchld(Manager
*m
) {
1643 /* First we call waitd() for a PID and do not reap the
1644 * zombie. That way we can still access /proc/$PID for
1645 * it while it is a zombie. */
1646 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1648 if (errno
== ECHILD
)
1660 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1661 _cleanup_free_
char *name
= NULL
;
1664 get_process_comm(si
.si_pid
, &name
);
1666 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1667 si
.si_pid
, strna(name
),
1668 sigchld_code_to_string(si
.si_code
),
1670 strna(si
.si_code
== CLD_EXITED
1671 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1672 : signal_to_string(si
.si_status
)));
1674 /* And now figure out the unit this belongs
1675 * to, it might be multiple... */
1676 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
1678 invoke_sigchld_event(m
, u1
, &si
);
1679 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(si
.si_pid
));
1681 invoke_sigchld_event(m
, u2
, &si
);
1682 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(si
.si_pid
));
1683 if (u3
&& u3
!= u2
&& u3
!= u1
)
1684 invoke_sigchld_event(m
, u3
, &si
);
1687 /* And now, we actually reap the zombie. */
1688 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1699 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1700 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1703 log_debug("Activating special unit %s", name
);
1705 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, &error
, NULL
);
1707 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1712 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1713 Manager
*m
= userdata
;
1715 struct signalfd_siginfo sfsi
;
1716 bool sigchld
= false;
1720 assert(m
->signal_fd
== fd
);
1722 if (revents
!= EPOLLIN
) {
1723 log_warning("Got unexpected events from signal file descriptor.");
1728 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1729 if (n
!= sizeof(sfsi
)) {
1734 if (errno
== EINTR
|| errno
== EAGAIN
)
1740 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1741 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== MANAGER_USER
)
1742 ? LOG_DEBUG
: LOG_INFO
,
1745 switch (sfsi
.ssi_signo
) {
1752 if (m
->running_as
== MANAGER_SYSTEM
) {
1753 /* This is for compatibility with the
1754 * original sysvinit */
1755 m
->exit_code
= MANAGER_REEXECUTE
;
1762 if (m
->running_as
== MANAGER_SYSTEM
) {
1764 /* If the user presses C-A-D more than
1765 * 7 times within 2s, we reboot
1768 if (ratelimit_test(&m
->ctrl_alt_del_ratelimit
))
1769 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1771 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1772 status_printf(NULL
, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1773 m
->exit_code
= MANAGER_REBOOT
;
1779 /* Run the exit target if there is one, if not, just exit. */
1780 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1781 m
->exit_code
= MANAGER_EXIT
;
1788 if (m
->running_as
== MANAGER_SYSTEM
)
1789 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1791 /* This is a nop on non-init */
1795 if (m
->running_as
== MANAGER_SYSTEM
)
1796 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1798 /* This is a nop on non-init */
1804 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1806 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1807 log_info("Trying to reconnect to bus...");
1811 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1812 log_info("Loading D-Bus service...");
1813 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1820 _cleanup_free_
char *dump
= NULL
;
1821 _cleanup_fclose_
FILE *f
= NULL
;
1824 f
= open_memstream(&dump
, &size
);
1826 log_warning_errno(errno
, "Failed to allocate memory stream: %m");
1830 manager_dump_units(m
, f
, "\t");
1831 manager_dump_jobs(m
, f
, "\t");
1833 r
= fflush_and_check(f
);
1835 log_warning_errno(r
, "Failed to write status stream: %m");
1839 log_dump(LOG_INFO
, dump
);
1844 m
->exit_code
= MANAGER_RELOAD
;
1849 /* Starting SIGRTMIN+0 */
1850 static const char * const target_table
[] = {
1851 [0] = SPECIAL_DEFAULT_TARGET
,
1852 [1] = SPECIAL_RESCUE_TARGET
,
1853 [2] = SPECIAL_EMERGENCY_TARGET
,
1854 [3] = SPECIAL_HALT_TARGET
,
1855 [4] = SPECIAL_POWEROFF_TARGET
,
1856 [5] = SPECIAL_REBOOT_TARGET
,
1857 [6] = SPECIAL_KEXEC_TARGET
1860 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1861 static const ManagerExitCode code_table
[] = {
1863 [1] = MANAGER_POWEROFF
,
1864 [2] = MANAGER_REBOOT
,
1868 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1869 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1870 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1871 manager_start_target(m
, target_table
[idx
],
1872 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1876 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1877 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1878 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1882 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1885 manager_set_show_status(m
, SHOW_STATUS_YES
);
1889 manager_set_show_status(m
, SHOW_STATUS_NO
);
1893 log_set_max_level(LOG_DEBUG
);
1894 log_info("Setting log level to debug.");
1898 log_set_max_level(LOG_INFO
);
1899 log_info("Setting log level to info.");
1903 if (m
->running_as
== MANAGER_USER
) {
1904 m
->exit_code
= MANAGER_EXIT
;
1908 /* This is a nop on init */
1912 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1913 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1914 log_notice("Setting log target to journal-or-kmsg.");
1918 log_set_target(LOG_TARGET_CONSOLE
);
1919 log_notice("Setting log target to console.");
1923 log_set_target(LOG_TARGET_KMSG
);
1924 log_notice("Setting log target to kmsg.");
1928 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1935 manager_dispatch_sigchld(m
);
1940 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1941 Manager
*m
= userdata
;
1946 assert(m
->time_change_fd
== fd
);
1948 log_struct(LOG_INFO
,
1949 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1950 LOG_MESSAGE("Time has been changed"),
1953 /* Restart the watch */
1954 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1955 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1957 manager_setup_time_change(m
);
1959 HASHMAP_FOREACH(u
, m
->units
, i
)
1960 if (UNIT_VTABLE(u
)->time_change
)
1961 UNIT_VTABLE(u
)->time_change(u
);
1966 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1967 Manager
*m
= userdata
;
1970 assert(m
->idle_pipe
[2] == fd
);
1972 m
->no_console_output
= m
->n_on_console
> 0;
1974 manager_close_idle_pipe(m
);
1979 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1980 Manager
*m
= userdata
;
1987 manager_print_jobs_in_progress(m
);
1989 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1990 r
= sd_event_source_set_time(source
, next
);
1994 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1997 int manager_loop(Manager
*m
) {
2000 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
2003 m
->exit_code
= MANAGER_OK
;
2005 /* Release the path cache */
2006 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
2008 manager_check_finished(m
);
2010 /* There might still be some zombies hanging around from
2011 * before we were exec()'ed. Let's reap them. */
2012 r
= manager_dispatch_sigchld(m
);
2016 while (m
->exit_code
== MANAGER_OK
) {
2019 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
)
2022 if (!ratelimit_test(&rl
)) {
2023 /* Yay, something is going seriously wrong, pause a little */
2024 log_warning("Looping too fast. Throttling execution a little.");
2028 if (manager_dispatch_load_queue(m
) > 0)
2031 if (manager_dispatch_gc_queue(m
) > 0)
2034 if (manager_dispatch_cleanup_queue(m
) > 0)
2037 if (manager_dispatch_cgroup_queue(m
) > 0)
2040 if (manager_dispatch_dbus_queue(m
) > 0)
2043 /* Sleep for half the watchdog time */
2044 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
) {
2045 wait_usec
= m
->runtime_watchdog
/ 2;
2049 wait_usec
= USEC_INFINITY
;
2051 r
= sd_event_run(m
->event
, wait_usec
);
2053 return log_error_errno(r
, "Failed to run event loop: %m");
2056 return m
->exit_code
;
2059 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2060 _cleanup_free_
char *n
= NULL
;
2068 r
= unit_name_from_dbus_path(s
, &n
);
2072 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2081 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2091 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2095 r
= safe_atou(p
, &id
);
2099 j
= manager_get_job(m
, id
);
2108 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2111 _cleanup_free_
char *p
= NULL
;
2115 if (m
->running_as
!= MANAGER_SYSTEM
)
2118 audit_fd
= get_audit_fd();
2122 /* Don't generate audit events if the service was already
2123 * started and we're just deserializing */
2124 if (m
->n_reloading
> 0)
2127 if (u
->type
!= UNIT_SERVICE
)
2130 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
2132 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
2136 msg
= strjoina("unit=", p
);
2137 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2139 /* We aren't allowed to send audit messages?
2140 * Then let's not retry again. */
2143 log_warning_errno(errno
, "Failed to send audit message: %m");
2149 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2150 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2153 _cleanup_free_
char *message
= NULL
;
2154 _cleanup_close_
int fd
= -1;
2156 /* Don't generate plymouth events if the service was already
2157 * started and we're just deserializing */
2158 if (m
->n_reloading
> 0)
2161 if (m
->running_as
!= MANAGER_SYSTEM
)
2164 if (detect_container() > 0)
2167 if (u
->type
!= UNIT_SERVICE
&&
2168 u
->type
!= UNIT_MOUNT
&&
2169 u
->type
!= UNIT_SWAP
)
2172 /* We set SOCK_NONBLOCK here so that we rather drop the
2173 * message then wait for plymouth */
2174 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2176 log_error_errno(errno
, "socket() failed: %m");
2180 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2182 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2183 log_error_errno(errno
, "connect() failed: %m");
2187 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2193 if (write(fd
, message
, n
+ 1) != n
+ 1)
2194 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2195 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2198 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2205 path
= m
->running_as
== MANAGER_SYSTEM
? "/run/systemd" : "/tmp";
2206 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2210 log_debug("Serializing state to %s", path
);
2212 f
= fdopen(fd
, "w+");
2223 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2236 fprintf(f
, "current-job-id=%"PRIu32
"\n", m
->current_job_id
);
2237 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2238 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2239 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2241 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2242 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2243 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2244 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2247 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2248 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2249 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2250 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2251 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2252 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2253 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2254 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2257 if (!switching_root
) {
2258 STRV_FOREACH(e
, m
->environment
) {
2259 _cleanup_free_
char *ce
;
2265 fprintf(f
, "env=%s\n", *e
);
2269 if (m
->notify_fd
>= 0) {
2272 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2276 fprintf(f
, "notify-fd=%i\n", copy
);
2277 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2280 if (m
->kdbus_fd
>= 0) {
2283 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2287 fprintf(f
, "kdbus-fd=%i\n", copy
);
2290 bus_track_serialize(m
->subscribed
, f
);
2294 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2302 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2309 assert(m
->n_reloading
> 0);
2315 r
= bus_fdset_add_all(m
, fds
);
2322 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2328 log_debug("Deserializing state...");
2333 char line
[LINE_MAX
], *l
;
2335 if (!fgets(line
, sizeof(line
), f
)) {
2350 if (startswith(l
, "current-job-id=")) {
2353 if (safe_atou32(l
+15, &id
) < 0)
2354 log_debug("Failed to parse current job id value %s", l
+15);
2356 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2358 } else if (startswith(l
, "n-installed-jobs=")) {
2361 if (safe_atou32(l
+17, &n
) < 0)
2362 log_debug("Failed to parse installed jobs counter %s", l
+17);
2364 m
->n_installed_jobs
+= n
;
2366 } else if (startswith(l
, "n-failed-jobs=")) {
2369 if (safe_atou32(l
+14, &n
) < 0)
2370 log_debug("Failed to parse failed jobs counter %s", l
+14);
2372 m
->n_failed_jobs
+= n
;
2374 } else if (startswith(l
, "taint-usr=")) {
2377 b
= parse_boolean(l
+10);
2379 log_debug("Failed to parse taint /usr flag %s", l
+10);
2381 m
->taint_usr
= m
->taint_usr
|| b
;
2383 } else if (startswith(l
, "firmware-timestamp="))
2384 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2385 else if (startswith(l
, "loader-timestamp="))
2386 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2387 else if (startswith(l
, "kernel-timestamp="))
2388 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2389 else if (startswith(l
, "initrd-timestamp="))
2390 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2391 else if (startswith(l
, "userspace-timestamp="))
2392 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2393 else if (startswith(l
, "finish-timestamp="))
2394 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2395 else if (startswith(l
, "security-start-timestamp="))
2396 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2397 else if (startswith(l
, "security-finish-timestamp="))
2398 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2399 else if (startswith(l
, "generators-start-timestamp="))
2400 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2401 else if (startswith(l
, "generators-finish-timestamp="))
2402 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2403 else if (startswith(l
, "units-load-start-timestamp="))
2404 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2405 else if (startswith(l
, "units-load-finish-timestamp="))
2406 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2407 else if (startswith(l
, "env=")) {
2408 _cleanup_free_
char *uce
= NULL
;
2411 r
= cunescape(l
+ 4, UNESCAPE_RELAX
, &uce
);
2415 e
= strv_env_set(m
->environment
, uce
);
2421 strv_free(m
->environment
);
2424 } else if (startswith(l
, "notify-fd=")) {
2427 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2428 log_debug("Failed to parse notify fd: %s", l
+ 10);
2430 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2431 safe_close(m
->notify_fd
);
2432 m
->notify_fd
= fdset_remove(fds
, fd
);
2435 } else if (startswith(l
, "notify-socket=")) {
2444 free(m
->notify_socket
);
2445 m
->notify_socket
= n
;
2447 } else if (startswith(l
, "kdbus-fd=")) {
2450 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2451 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2453 safe_close(m
->kdbus_fd
);
2454 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2460 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2462 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2464 log_debug("Unknown serialization item '%s'", l
);
2470 char name
[UNIT_NAME_MAX
+2];
2473 if (!fgets(name
, sizeof(name
), f
)) {
2484 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2488 r
= unit_deserialize(u
, f
, fds
);
2497 assert(m
->n_reloading
> 0);
2503 int manager_reload(Manager
*m
) {
2505 _cleanup_fclose_
FILE *f
= NULL
;
2506 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2510 r
= manager_open_serialization(m
, &f
);
2515 bus_manager_send_reloading(m
, true);
2523 r
= manager_serialize(m
, f
, fds
, false);
2529 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2534 /* From here on there is no way back. */
2535 manager_clear_jobs_and_units(m
);
2536 manager_undo_generators(m
);
2537 lookup_paths_free(&m
->lookup_paths
);
2539 /* Find new unit paths */
2540 q
= manager_run_generators(m
);
2541 if (q
< 0 && r
>= 0)
2544 q
= lookup_paths_init(
2545 &m
->lookup_paths
, m
->running_as
, true,
2547 m
->generator_unit_path
,
2548 m
->generator_unit_path_early
,
2549 m
->generator_unit_path_late
);
2550 if (q
< 0 && r
>= 0)
2553 manager_build_unit_path_cache(m
);
2555 /* First, enumerate what we can from all config files */
2556 manager_enumerate(m
);
2558 /* Second, deserialize our stored data */
2559 q
= manager_deserialize(m
, f
, fds
);
2560 if (q
< 0 && r
>= 0)
2566 /* Re-register notify_fd as event source */
2567 q
= manager_setup_notify(m
);
2568 if (q
< 0 && r
>= 0)
2571 /* Third, fire things up! */
2572 manager_coldplug(m
);
2574 /* Sync current state of bus names with our set of listening units */
2576 manager_sync_bus_names(m
, m
->api_bus
);
2578 assert(m
->n_reloading
> 0);
2581 m
->send_reloading_done
= true;
2586 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2589 return m
->n_reloading
!= 0;
2592 void manager_reset_failed(Manager
*m
) {
2598 HASHMAP_FOREACH(u
, m
->units
, i
)
2599 unit_reset_failed(u
);
2602 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2608 /* Returns true if the unit is inactive or going down */
2609 u
= manager_get_unit(m
, name
);
2613 return unit_inactive_or_pending(u
);
2616 static void manager_notify_finished(Manager
*m
) {
2617 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2618 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2623 if (m
->running_as
== MANAGER_SYSTEM
&& detect_container() <= 0) {
2625 /* Note that m->kernel_usec.monotonic is always at 0,
2626 * and m->firmware_usec.monotonic and
2627 * m->loader_usec.monotonic should be considered
2628 * negative values. */
2630 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2631 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2632 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2633 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2635 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2637 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2638 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2640 log_struct(LOG_INFO
,
2641 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2642 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2643 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2644 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2645 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2646 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2647 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2648 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2649 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2652 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2655 log_struct(LOG_INFO
,
2656 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2657 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2658 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2659 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2660 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2661 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2662 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2666 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2667 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2669 log_struct(LOG_INFO
,
2670 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2671 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2672 LOG_MESSAGE("Startup finished in %s.",
2673 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2677 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2681 "STATUS=Startup finished in %s.",
2682 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2685 void manager_check_finished(Manager
*m
) {
2688 if (m
->n_reloading
> 0)
2691 /* Verify that we are actually running currently. Initially
2692 * the exit code is set to invalid, and during operation it is
2693 * then set to MANAGER_OK */
2694 if (m
->exit_code
!= MANAGER_OK
)
2697 if (hashmap_size(m
->jobs
) > 0) {
2698 if (m
->jobs_in_progress_event_source
)
2699 /* Ignore any failure, this is only for feedback */
2700 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2705 manager_flip_auto_status(m
, false);
2707 /* Notify Type=idle units that we are done now */
2708 manager_close_idle_pipe(m
);
2710 /* Turn off confirm spawn now */
2711 m
->confirm_spawn
= false;
2713 /* No need to update ask password status when we're going non-interactive */
2714 manager_close_ask_password(m
);
2716 /* This is no longer the first boot */
2717 manager_set_first_boot(m
, false);
2719 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2722 dual_timestamp_get(&m
->finish_timestamp
);
2724 manager_notify_finished(m
);
2726 manager_invalidate_startup_units(m
);
2729 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2740 if (m
->running_as
== MANAGER_SYSTEM
&& getpid() == 1) {
2741 /* systemd --system, not running --test */
2743 p
= strappend("/run/systemd/", name
);
2747 r
= mkdir_p_label(p
, 0755);
2749 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2753 } else if (m
->running_as
== MANAGER_USER
) {
2754 const char *s
= NULL
;
2756 s
= getenv("XDG_RUNTIME_DIR");
2759 p
= strjoin(s
, "/systemd/", name
, NULL
);
2763 r
= mkdir_p_label(p
, 0755);
2765 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2770 /* systemd --system --test */
2772 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2777 log_error_errno(errno
, "Failed to create generator directory %s: %m", p
);
2787 static void trim_generator_dir(Manager
*m
, char **generator
) {
2794 if (rmdir(*generator
) >= 0)
2795 *generator
= mfree(*generator
);
2800 static int manager_run_generators(Manager
*m
) {
2801 _cleanup_strv_free_
char **paths
= NULL
;
2802 const char *argv
[5];
2811 paths
= generator_paths(m
->running_as
);
2815 /* Optimize by skipping the whole process by not creating output directories
2816 * if no generators are found. */
2817 STRV_FOREACH(path
, paths
) {
2818 r
= access(*path
, F_OK
);
2821 if (errno
!= ENOENT
)
2822 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2827 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2831 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2835 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2839 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2840 argv
[1] = m
->generator_unit_path
;
2841 argv
[2] = m
->generator_unit_path_early
;
2842 argv
[3] = m
->generator_unit_path_late
;
2845 RUN_WITH_UMASK(0022)
2846 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2849 trim_generator_dir(m
, &m
->generator_unit_path
);
2850 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2851 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2855 static void remove_generator_dir(Manager
*m
, char **generator
) {
2862 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2863 (void) rm_rf(*generator
, REMOVE_ROOT
);
2865 *generator
= mfree(*generator
);
2868 static void manager_undo_generators(Manager
*m
) {
2871 remove_generator_dir(m
, &m
->generator_unit_path
);
2872 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2873 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2876 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2877 char **a
= NULL
, **b
= NULL
, **l
;
2882 if (!strv_isempty(minus
)) {
2883 a
= strv_env_delete(l
, 1, minus
);
2890 if (!strv_isempty(plus
)) {
2891 b
= strv_env_merge(2, l
, plus
);
2900 if (m
->environment
!= l
)
2901 strv_free(m
->environment
);
2908 manager_clean_environment(m
);
2909 strv_sort(m
->environment
);
2914 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2919 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
2920 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
2922 if (!default_rlimit
[i
])
2925 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
2933 void manager_recheck_journal(Manager
*m
) {
2938 if (m
->running_as
!= MANAGER_SYSTEM
)
2941 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
2942 if (u
&& SOCKET(u
)->state
!= SOCKET_RUNNING
) {
2943 log_close_journal();
2947 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
2948 if (u
&& SERVICE(u
)->state
!= SERVICE_RUNNING
) {
2949 log_close_journal();
2953 /* Hmm, OK, so the socket is fully up and the service is up
2954 * too, then let's make use of the thing. */
2958 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
2960 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
2962 if (m
->running_as
!= MANAGER_SYSTEM
)
2965 if (m
->show_status
!= mode
)
2966 log_debug("%s showing of status.",
2967 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
2968 m
->show_status
= mode
;
2971 (void) touch("/run/systemd/show-status");
2973 (void) unlink("/run/systemd/show-status");
2976 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
2979 if (m
->running_as
!= MANAGER_SYSTEM
)
2982 if (m
->no_console_output
)
2985 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
2988 /* If we cannot find out the status properly, just proceed. */
2989 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
2992 if (m
->show_status
> 0)
2998 void manager_set_first_boot(Manager
*m
, bool b
) {
3001 if (m
->running_as
!= MANAGER_SYSTEM
)
3004 if (m
->first_boot
!= (int) b
) {
3006 (void) touch("/run/systemd/first-boot");
3008 (void) unlink("/run/systemd/first-boot");
3014 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
3017 /* If m is NULL, assume we're after shutdown and let the messages through. */
3019 if (m
&& !manager_get_show_status(m
, type
))
3022 /* XXX We should totally drop the check for ephemeral here
3023 * and thus effectively make 'Type=idle' pointless. */
3024 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3027 va_start(ap
, format
);
3028 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3032 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3033 char p
[strlen(path
)+1];
3039 path_kill_slashes(p
);
3041 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3044 const char *manager_get_runtime_prefix(Manager
*m
) {
3047 return m
->running_as
== MANAGER_SYSTEM
?
3049 getenv("XDG_RUNTIME_DIR");
3052 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
3057 assert(u
->manager
== m
);
3059 size
= set_size(m
->failed_units
);
3062 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
3066 if (set_put(m
->failed_units
, u
) < 0)
3069 (void) set_remove(m
->failed_units
, u
);
3071 if (set_size(m
->failed_units
) != size
)
3072 bus_manager_send_change_signal(m
);
3077 ManagerState
manager_state(Manager
*m
) {
3082 /* Did we ever finish booting? If not then we are still starting up */
3083 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3085 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3086 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3087 return MANAGER_INITIALIZING
;
3089 return MANAGER_STARTING
;
3092 /* Is the special shutdown target queued? If so, we are in shutdown state */
3093 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3094 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_RELOAD_OR_START
))
3095 return MANAGER_STOPPING
;
3097 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3098 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3099 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3100 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_RELOAD_OR_START
))))
3101 return MANAGER_MAINTENANCE
;
3103 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3104 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3105 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_RELOAD_OR_START
))))
3106 return MANAGER_MAINTENANCE
;
3108 /* Are there any failed units? If so, we are in degraded mode */
3109 if (set_size(m
->failed_units
) > 0)
3110 return MANAGER_DEGRADED
;
3112 return MANAGER_RUNNING
;
3115 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3116 [MANAGER_INITIALIZING
] = "initializing",
3117 [MANAGER_STARTING
] = "starting",
3118 [MANAGER_RUNNING
] = "running",
3119 [MANAGER_DEGRADED
] = "degraded",
3120 [MANAGER_MAINTENANCE
] = "maintenance",
3121 [MANAGER_STOPPING
] = "stopping",
3124 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);