1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include <sys/inotify.h>
28 #include <sys/epoll.h>
29 #include <sys/reboot.h>
30 #include <sys/ioctl.h>
34 #include <sys/timerfd.h>
40 #include "sd-daemon.h"
41 #include "sd-messages.h"
44 #include "transaction.h"
51 #include "ratelimit.h"
52 #include "locale-setup.h"
53 #include "unit-name.h"
56 #include "path-lookup.h"
58 #include "exit-status.h"
61 #include "path-util.h"
63 #include "boot-timestamps.h"
65 #include "bus-common-errors.h"
66 #include "bus-error.h"
69 #include "dbus-unit.h"
71 #include "dbus-manager.h"
72 #include "bus-kernel.h"
73 #include "time-util.h"
74 #include "process-util.h"
75 #include "terminal-util.h"
77 /* Initial delay and the interval for printing status messages about running jobs */
78 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
79 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
80 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
82 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
83 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
84 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
85 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
86 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
87 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
88 static int manager_run_generators(Manager
*m
);
89 static void manager_undo_generators(Manager
*m
);
91 static void manager_watch_jobs_in_progress(Manager
*m
) {
97 if (m
->jobs_in_progress_event_source
)
100 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
101 r
= sd_event_add_time(
103 &m
->jobs_in_progress_event_source
,
106 manager_dispatch_jobs_in_progress
, m
);
110 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
113 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
115 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
118 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
119 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
123 p
= mempset(p
, ' ', pos
-2);
124 p
= stpcpy(p
, ANSI_RED_ON
);
128 if (pos
> 0 && pos
<= width
) {
129 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED_ON
);
133 p
= stpcpy(p
, ANSI_HIGHLIGHT_OFF
);
136 p
= stpcpy(p
, ANSI_RED_ON
);
139 p
= mempset(p
, ' ', width
-1-pos
);
140 strcpy(p
, ANSI_HIGHLIGHT_OFF
);
144 void manager_flip_auto_status(Manager
*m
, bool enable
) {
148 if (m
->show_status
== SHOW_STATUS_AUTO
)
149 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
151 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
152 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
156 static void manager_print_jobs_in_progress(Manager
*m
) {
157 _cleanup_free_
char *job_of_n
= NULL
;
160 unsigned counter
= 0, print_nr
;
161 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
163 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
167 assert(m
->n_running_jobs
> 0);
169 manager_flip_auto_status(m
, true);
171 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
173 HASHMAP_FOREACH(j
, m
->jobs
, i
)
174 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
177 /* m->n_running_jobs must be consistent with the contents of m->jobs,
178 * so the above loop must have succeeded in finding j. */
179 assert(counter
== print_nr
+ 1);
182 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
184 cylon_pos
= 14 - cylon_pos
;
185 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
187 m
->jobs_in_progress_iteration
++;
189 if (m
->n_running_jobs
> 1) {
190 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
194 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
195 if (job_get_timeout(j
, &x
) > 0)
196 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
198 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
199 "%sA %s job is running for %s (%s / %s)",
201 job_type_to_string(j
->type
),
202 unit_description(j
->unit
),
206 static int have_ask_password(void) {
207 _cleanup_closedir_
DIR *dir
;
209 dir
= opendir("/run/systemd/ask-password");
222 if (!de
&& errno
!= 0)
227 if (startswith(de
->d_name
, "ask."))
232 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
233 int fd
, uint32_t revents
, void *userdata
) {
234 Manager
*m
= userdata
;
240 m
->have_ask_password
= have_ask_password();
241 if (m
->have_ask_password
< 0)
242 /* Log error but continue. Negative have_ask_password
243 * is treated as unknown status. */
244 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
249 static void manager_close_ask_password(Manager
*m
) {
252 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
253 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
254 m
->have_ask_password
= -EINVAL
;
257 static int manager_check_ask_password(Manager
*m
) {
262 if (!m
->ask_password_event_source
) {
263 assert(m
->ask_password_inotify_fd
< 0);
265 mkdir_p_label("/run/systemd/ask-password", 0755);
267 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
268 if (m
->ask_password_inotify_fd
< 0)
269 return log_error_errno(errno
, "inotify_init1() failed: %m");
271 if (inotify_add_watch(m
->ask_password_inotify_fd
, "/run/systemd/ask-password", IN_CREATE
|IN_DELETE
|IN_MOVE
) < 0) {
272 log_error_errno(errno
, "Failed to add watch on /run/systemd/ask-password: %m");
273 manager_close_ask_password(m
);
277 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
278 m
->ask_password_inotify_fd
, EPOLLIN
,
279 manager_dispatch_ask_password_fd
, m
);
281 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
282 manager_close_ask_password(m
);
286 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
288 /* Queries might have been added meanwhile... */
289 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
290 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
293 return m
->have_ask_password
;
296 static int manager_watch_idle_pipe(Manager
*m
) {
301 if (m
->idle_pipe_event_source
)
304 if (m
->idle_pipe
[2] < 0)
307 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
309 return log_error_errno(r
, "Failed to watch idle pipe: %m");
311 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
316 static void manager_close_idle_pipe(Manager
*m
) {
319 safe_close_pair(m
->idle_pipe
);
320 safe_close_pair(m
->idle_pipe
+ 2);
323 static int manager_setup_time_change(Manager
*m
) {
326 /* We only care for the cancellation event, hence we set the
327 * timeout to the latest possible value. */
328 struct itimerspec its
= {
329 .it_value
.tv_sec
= TIME_T_MAX
,
333 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX
));
338 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
339 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
341 m
->time_change_fd
= timerfd_create(CLOCK_REALTIME
, TFD_NONBLOCK
|TFD_CLOEXEC
);
342 if (m
->time_change_fd
< 0)
343 return log_error_errno(errno
, "Failed to create timerfd: %m");
345 if (timerfd_settime(m
->time_change_fd
, TFD_TIMER_ABSTIME
|TFD_TIMER_CANCEL_ON_SET
, &its
, NULL
) < 0) {
346 log_debug_errno(errno
, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
347 m
->time_change_fd
= safe_close(m
->time_change_fd
);
351 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
353 return log_error_errno(r
, "Failed to create time change event source: %m");
355 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
357 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
362 static int enable_special_signals(Manager
*m
) {
363 _cleanup_close_
int fd
= -1;
367 /* Enable that we get SIGINT on control-alt-del. In containers
368 * this will fail with EPERM (older) or EINVAL (newer), so
370 if (reboot(RB_DISABLE_CAD
) < 0 && errno
!= EPERM
&& errno
!= EINVAL
)
371 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
373 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
375 /* Support systems without virtual console */
377 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
379 /* Enable that we get SIGWINCH on kbrequest */
380 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
381 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
387 static int manager_setup_signals(Manager
*m
) {
388 struct sigaction sa
= {
389 .sa_handler
= SIG_DFL
,
390 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
397 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
399 /* We make liberal use of realtime signals here. On
400 * Linux/glibc we have 30 of them (with the exception of Linux
401 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
404 assert_se(sigemptyset(&mask
) == 0);
405 sigset_add_many(&mask
,
406 SIGCHLD
, /* Child died */
407 SIGTERM
, /* Reexecute daemon */
408 SIGHUP
, /* Reload configuration */
409 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
410 SIGUSR2
, /* systemd: dump status */
411 SIGINT
, /* Kernel sends us this on control-alt-del */
412 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
413 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
415 SIGRTMIN
+0, /* systemd: start default.target */
416 SIGRTMIN
+1, /* systemd: isolate rescue.target */
417 SIGRTMIN
+2, /* systemd: isolate emergency.target */
418 SIGRTMIN
+3, /* systemd: start halt.target */
419 SIGRTMIN
+4, /* systemd: start poweroff.target */
420 SIGRTMIN
+5, /* systemd: start reboot.target */
421 SIGRTMIN
+6, /* systemd: start kexec.target */
423 /* ... space for more special targets ... */
425 SIGRTMIN
+13, /* systemd: Immediate halt */
426 SIGRTMIN
+14, /* systemd: Immediate poweroff */
427 SIGRTMIN
+15, /* systemd: Immediate reboot */
428 SIGRTMIN
+16, /* systemd: Immediate kexec */
430 /* ... space for more immediate system state changes ... */
432 SIGRTMIN
+20, /* systemd: enable status messages */
433 SIGRTMIN
+21, /* systemd: disable status messages */
434 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
435 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
436 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
438 /* .. one free signal here ... */
440 #if !defined(__hppa64__) && !defined(__hppa__)
441 /* Apparently Linux on hppa has fewer RT
442 * signals (SIGRTMAX is SIGRTMIN+25 there),
443 * hence let's not try to make use of them
444 * here. Since these commands are accessible
445 * by different means and only really a safety
446 * net, the missing functionality on hppa
447 * shouldn't matter. */
449 SIGRTMIN
+26, /* systemd: set log target to journal-or-kmsg */
450 SIGRTMIN
+27, /* systemd: set log target to console */
451 SIGRTMIN
+28, /* systemd: set log target to kmsg */
452 SIGRTMIN
+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
454 /* ... one free signal here SIGRTMIN+30 ... */
457 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
459 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
460 if (m
->signal_fd
< 0)
463 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
467 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
469 /* Process signals a bit earlier than the rest of things, but
470 * later than notify_fd processing, so that the notify
471 * processing can still figure out to which process/service a
472 * message belongs, before we reap the process. */
473 r
= sd_event_source_set_priority(m
->signal_event_source
, -5);
477 if (m
->running_as
== SYSTEMD_SYSTEM
)
478 return enable_special_signals(m
);
483 static void manager_clean_environment(Manager
*m
) {
486 /* Let's remove some environment variables that we
487 * need ourselves to communicate with our clients */
500 static int manager_default_environment(Manager
*m
) {
503 if (m
->running_as
== SYSTEMD_SYSTEM
) {
504 /* The system manager always starts with a clean
505 * environment for its children. It does not import
506 * the kernel or the parents exported variables.
508 * The initial passed environ is untouched to keep
509 * /proc/self/environ valid; it is used for tagging
510 * the init process inside containers. */
511 m
->environment
= strv_new("PATH=" DEFAULT_PATH
,
514 /* Import locale variables LC_*= from configuration */
515 locale_setup(&m
->environment
);
517 /* The user manager passes its own environment
518 * along to its children. */
519 m
->environment
= strv_copy(environ
);
525 manager_clean_environment(m
);
526 strv_sort(m
->environment
);
531 int manager_new(SystemdRunningAs running_as
, bool test_run
, Manager
**_m
) {
536 assert(running_as
>= 0);
537 assert(running_as
< _SYSTEMD_RUNNING_AS_MAX
);
539 m
= new0(Manager
, 1);
544 if (running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0)
545 boot_timestamps(&m
->userspace_timestamp
, &m
->firmware_timestamp
, &m
->loader_timestamp
);
548 m
->running_as
= running_as
;
549 m
->exit_code
= _MANAGER_EXIT_CODE_INVALID
;
550 m
->default_timer_accuracy_usec
= USEC_PER_MINUTE
;
552 m
->idle_pipe
[0] = m
->idle_pipe
[1] = m
->idle_pipe
[2] = m
->idle_pipe
[3] = -1;
554 m
->pin_cgroupfs_fd
= m
->notify_fd
= m
->signal_fd
= m
->time_change_fd
= m
->dev_autofs_fd
= m
->private_listen_fd
= m
->kdbus_fd
= m
->utab_inotify_fd
= -1;
555 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
557 m
->ask_password_inotify_fd
= -1;
558 m
->have_ask_password
= -EINVAL
; /* we don't know */
560 m
->test_run
= test_run
;
562 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
563 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
565 r
= manager_default_environment(m
);
569 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
573 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
577 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
581 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
585 r
= set_ensure_allocated(&m
->startup_units
, NULL
);
589 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
593 r
= sd_event_default(&m
->event
);
597 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
601 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
605 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
609 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
611 r
= manager_setup_signals(m
);
615 r
= manager_setup_cgroup(m
);
619 r
= manager_setup_time_change(m
);
623 m
->udev
= udev_new();
629 /* Note that we set up neither kdbus, nor the notify fd
630 * here. We do that after deserialization, since they might
631 * have gotten serialized across the reexec. */
633 m
->taint_usr
= dir_is_empty("/usr") > 0;
643 static int manager_setup_notify(Manager
*m
) {
649 if (m
->notify_fd
< 0) {
650 _cleanup_close_
int fd
= -1;
651 union sockaddr_union sa
= {
652 .sa
.sa_family
= AF_UNIX
,
654 static const int one
= 1;
656 /* First free all secondary fields */
657 free(m
->notify_socket
);
658 m
->notify_socket
= NULL
;
659 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
661 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
663 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
665 if (m
->running_as
== SYSTEMD_SYSTEM
)
666 m
->notify_socket
= strdup("/run/systemd/notify");
670 e
= getenv("XDG_RUNTIME_DIR");
672 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
676 m
->notify_socket
= strappend(e
, "/systemd/notify");
678 if (!m
->notify_socket
)
681 (void) mkdir_parents_label(m
->notify_socket
, 0755);
682 (void) unlink(m
->notify_socket
);
684 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
685 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
687 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
689 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
691 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
696 log_debug("Using notification socket %s", m
->notify_socket
);
699 if (!m
->notify_event_source
) {
700 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
702 return log_error_errno(r
, "Failed to allocate notify event source: %m");
704 /* Process signals a bit earlier than SIGCHLD, so that we can
705 * still identify to which service an exit message belongs */
706 r
= sd_event_source_set_priority(m
->notify_event_source
, -7);
708 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
710 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
716 static int manager_setup_kdbus(Manager
*m
) {
718 _cleanup_free_
char *p
= NULL
;
722 if (m
->test_run
|| m
->kdbus_fd
>= 0)
725 if (m
->running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0)
726 bus_kernel_fix_attach_mask();
728 m
->kdbus_fd
= bus_kernel_create_bus(
729 m
->running_as
== SYSTEMD_SYSTEM
? "system" : "user",
730 m
->running_as
== SYSTEMD_SYSTEM
, &p
);
733 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
735 log_debug("Successfully set up kdbus on %s", p
);
741 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
742 bool try_bus_connect
;
752 (m
->running_as
== SYSTEMD_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
754 /* Try to connect to the busses, if possible. */
755 return bus_init(m
, try_bus_connect
);
758 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
764 while ((u
= m
->cleanup_queue
)) {
765 assert(u
->in_cleanup_queue
);
775 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
776 GC_OFFSET_UNSURE
, /* No clue */
777 GC_OFFSET_GOOD
, /* We still need this unit */
778 GC_OFFSET_BAD
, /* We don't need this unit anymore */
782 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
789 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
790 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
791 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
794 if (u
->in_cleanup_queue
)
797 if (unit_check_gc(u
))
800 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
804 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
805 unit_gc_sweep(other
, gc_marker
);
807 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
810 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
817 /* We were unable to find anything out about this entry, so
818 * let's investigate it later */
819 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
820 unit_add_to_gc_queue(u
);
824 /* We definitely know that this one is not useful anymore, so
825 * let's mark it for deletion */
826 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
827 unit_add_to_cleanup_queue(u
);
831 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
834 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
841 /* log_debug("Running GC..."); */
843 m
->gc_marker
+= _GC_OFFSET_MAX
;
844 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
847 gc_marker
= m
->gc_marker
;
849 while ((u
= m
->gc_queue
)) {
850 assert(u
->in_gc_queue
);
852 unit_gc_sweep(u
, gc_marker
);
854 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
855 u
->in_gc_queue
= false;
859 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
860 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
862 log_unit_debug(u
->id
, "Collecting %s", u
->id
);
863 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
864 unit_add_to_cleanup_queue(u
);
868 m
->n_in_gc_queue
= 0;
873 static void manager_clear_jobs_and_units(Manager
*m
) {
878 while ((u
= hashmap_first(m
->units
)))
881 manager_dispatch_cleanup_queue(m
);
883 assert(!m
->load_queue
);
884 assert(!m
->run_queue
);
885 assert(!m
->dbus_unit_queue
);
886 assert(!m
->dbus_job_queue
);
887 assert(!m
->cleanup_queue
);
888 assert(!m
->gc_queue
);
890 assert(hashmap_isempty(m
->jobs
));
891 assert(hashmap_isempty(m
->units
));
894 m
->n_running_jobs
= 0;
897 Manager
* manager_free(Manager
*m
) {
904 manager_clear_jobs_and_units(m
);
906 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
907 if (unit_vtable
[c
]->shutdown
)
908 unit_vtable
[c
]->shutdown(m
);
910 /* If we reexecute ourselves, we keep the root cgroup
912 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
914 manager_undo_generators(m
);
918 hashmap_free(m
->units
);
919 hashmap_free(m
->jobs
);
920 hashmap_free(m
->watch_pids1
);
921 hashmap_free(m
->watch_pids2
);
922 hashmap_free(m
->watch_bus
);
924 set_free(m
->startup_units
);
925 set_free(m
->failed_units
);
927 sd_event_source_unref(m
->signal_event_source
);
928 sd_event_source_unref(m
->notify_event_source
);
929 sd_event_source_unref(m
->time_change_event_source
);
930 sd_event_source_unref(m
->jobs_in_progress_event_source
);
931 sd_event_source_unref(m
->idle_pipe_event_source
);
932 sd_event_source_unref(m
->run_queue_event_source
);
934 safe_close(m
->signal_fd
);
935 safe_close(m
->notify_fd
);
936 safe_close(m
->time_change_fd
);
937 safe_close(m
->kdbus_fd
);
939 manager_close_ask_password(m
);
941 manager_close_idle_pipe(m
);
944 sd_event_unref(m
->event
);
946 free(m
->notify_socket
);
948 lookup_paths_free(&m
->lookup_paths
);
949 strv_free(m
->environment
);
951 hashmap_free(m
->cgroup_unit
);
952 set_free_free(m
->unit_path_cache
);
954 free(m
->switch_root
);
955 free(m
->switch_root_init
);
957 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
960 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
961 hashmap_free(m
->units_requiring_mounts_for
);
967 int manager_enumerate(Manager
*m
) {
973 /* Let's ask every type to load all units from disk/kernel
974 * that it might know */
975 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
978 if (!unit_type_supported(c
)) {
979 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
983 if (!unit_vtable
[c
]->enumerate
)
986 q
= unit_vtable
[c
]->enumerate(m
);
991 manager_dispatch_load_queue(m
);
995 static void manager_coldplug(Manager
*m
) {
1003 /* Then, let's set up their initial state. */
1004 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1006 /* ignore aliases */
1010 r
= unit_coldplug(u
);
1012 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1016 static void manager_build_unit_path_cache(Manager
*m
) {
1018 _cleanup_closedir_
DIR *d
= NULL
;
1023 set_free_free(m
->unit_path_cache
);
1025 m
->unit_path_cache
= set_new(&string_hash_ops
);
1026 if (!m
->unit_path_cache
) {
1027 log_error("Failed to allocate unit path cache.");
1031 /* This simply builds a list of files we know exist, so that
1032 * we don't always have to go to disk */
1034 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1039 if (errno
!= ENOENT
)
1040 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1044 while ((de
= readdir(d
))) {
1047 if (hidden_file(de
->d_name
))
1050 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1056 r
= set_consume(m
->unit_path_cache
, p
);
1068 log_error_errno(r
, "Failed to build unit path cache: %m");
1070 set_free_free(m
->unit_path_cache
);
1071 m
->unit_path_cache
= NULL
;
1075 static int manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1082 HASHMAP_FOREACH(u
, m
->units
, i
) {
1084 if (fdset_size(fds
) <= 0)
1087 if (UNIT_VTABLE(u
)->distribute_fds
) {
1088 r
= UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1097 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1102 dual_timestamp_get(&m
->generators_start_timestamp
);
1103 r
= manager_run_generators(m
);
1104 dual_timestamp_get(&m
->generators_finish_timestamp
);
1108 r
= lookup_paths_init(
1109 &m
->lookup_paths
, m
->running_as
, true,
1111 m
->generator_unit_path
,
1112 m
->generator_unit_path_early
,
1113 m
->generator_unit_path_late
);
1117 manager_build_unit_path_cache(m
);
1119 /* If we will deserialize make sure that during enumeration
1120 * this is already known, so we increase the counter here
1125 /* First, enumerate what we can from all config files */
1126 dual_timestamp_get(&m
->units_load_start_timestamp
);
1127 r
= manager_enumerate(m
);
1128 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1130 /* Second, deserialize if there is something to deserialize */
1132 r
= manager_deserialize(m
, serialization
, fds
);
1134 /* Any fds left? Find some unit which wants them. This is
1135 * useful to allow container managers to pass some file
1136 * descriptors to us pre-initialized. This enables
1137 * socket-based activation of entire containers. */
1138 if (fdset_size(fds
) > 0) {
1139 q
= manager_distribute_fds(m
, fds
);
1140 if (q
< 0 && r
== 0)
1144 /* We might have deserialized the notify fd, but if we didn't
1145 * then let's create the bus now */
1146 q
= manager_setup_notify(m
);
1147 if (q
< 0 && r
== 0)
1150 /* We might have deserialized the kdbus control fd, but if we
1151 * didn't, then let's create the bus now. */
1152 manager_setup_kdbus(m
);
1153 manager_connect_bus(m
, !!serialization
);
1154 bus_track_coldplug(m
, &m
->subscribed
, &m
->deserialized_subscribed
);
1156 /* Third, fire things up! */
1157 manager_coldplug(m
);
1159 if (serialization
) {
1160 assert(m
->n_reloading
> 0);
1163 /* Let's wait for the UnitNew/JobNew messages being
1164 * sent, before we notify that the reload is
1166 m
->send_reloading_done
= true;
1172 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1177 assert(type
< _JOB_TYPE_MAX
);
1179 assert(mode
< _JOB_MODE_MAX
);
1181 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1182 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1184 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1185 return sd_bus_error_setf(e
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1187 log_unit_debug(unit
->id
,
1188 "Trying to enqueue job %s/%s/%s", unit
->id
,
1189 job_type_to_string(type
), job_mode_to_string(mode
));
1191 job_type_collapse(&type
, unit
);
1193 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1197 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, override
, false,
1198 mode
== JOB_IGNORE_DEPENDENCIES
|| mode
== JOB_IGNORE_REQUIREMENTS
,
1199 mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1203 if (mode
== JOB_ISOLATE
) {
1204 r
= transaction_add_isolate_jobs(tr
, m
);
1209 r
= transaction_activate(tr
, m
, mode
, e
);
1213 log_unit_debug(unit
->id
,
1214 "Enqueued job %s/%s as %u", unit
->id
,
1215 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1218 *_ret
= tr
->anchor_job
;
1220 transaction_free(tr
);
1224 transaction_abort(tr
);
1225 transaction_free(tr
);
1229 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1234 assert(type
< _JOB_TYPE_MAX
);
1236 assert(mode
< _JOB_MODE_MAX
);
1238 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1242 return manager_add_job(m
, type
, unit
, mode
, override
, e
, _ret
);
1245 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1248 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1251 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1255 return hashmap_get(m
->units
, name
);
1258 unsigned manager_dispatch_load_queue(Manager
*m
) {
1264 /* Make sure we are not run recursively */
1265 if (m
->dispatching_load_queue
)
1268 m
->dispatching_load_queue
= true;
1270 /* Dispatches the load queue. Takes a unit from the queue and
1271 * tries to load its data until the queue is empty */
1273 while ((u
= m
->load_queue
)) {
1274 assert(u
->in_load_queue
);
1280 m
->dispatching_load_queue
= false;
1284 int manager_load_unit_prepare(
1296 assert(name
|| path
);
1298 /* This will prepare the unit for loading, but not actually
1299 * load anything from disk. */
1301 if (path
&& !is_path(path
))
1302 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1305 name
= basename(path
);
1307 t
= unit_name_to_type(name
);
1309 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1310 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1312 ret
= manager_get_unit(m
, name
);
1318 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1323 ret
->fragment_path
= strdup(path
);
1324 if (!ret
->fragment_path
) {
1330 r
= unit_add_name(ret
, name
);
1336 unit_add_to_load_queue(ret
);
1337 unit_add_to_dbus_queue(ret
);
1338 unit_add_to_gc_queue(ret
);
1346 int manager_load_unit(
1357 /* This will load the service information files, but not actually
1358 * start any services or anything. */
1360 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1364 manager_dispatch_load_queue(m
);
1367 *_ret
= unit_follow_merge(*_ret
);
1372 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1379 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1380 job_dump(j
, f
, prefix
);
1383 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1391 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1393 unit_dump(u
, f
, prefix
);
1396 void manager_clear_jobs(Manager
*m
) {
1401 while ((j
= hashmap_first(m
->jobs
)))
1402 /* No need to recurse. We're cancelling all jobs. */
1403 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1406 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1407 Manager
*m
= userdata
;
1413 while ((j
= m
->run_queue
)) {
1414 assert(j
->installed
);
1415 assert(j
->in_run_queue
);
1417 job_run_and_invalidate(j
);
1420 if (m
->n_running_jobs
> 0)
1421 manager_watch_jobs_in_progress(m
);
1423 if (m
->n_on_console
> 0)
1424 manager_watch_idle_pipe(m
);
1429 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1436 if (m
->dispatching_dbus_queue
)
1439 m
->dispatching_dbus_queue
= true;
1441 while ((u
= m
->dbus_unit_queue
)) {
1442 assert(u
->in_dbus_queue
);
1444 bus_unit_send_change_signal(u
);
1448 while ((j
= m
->dbus_job_queue
)) {
1449 assert(j
->in_dbus_queue
);
1451 bus_job_send_change_signal(j
);
1455 m
->dispatching_dbus_queue
= false;
1457 if (m
->send_reloading_done
) {
1458 m
->send_reloading_done
= false;
1460 bus_manager_send_reloading(m
, false);
1463 if (m
->queued_message
)
1464 bus_send_queued_message(m
);
1469 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, char *buf
, size_t n
, FDSet
*fds
) {
1470 _cleanup_strv_free_
char **tags
= NULL
;
1477 tags
= strv_split(buf
, "\n\r");
1483 log_unit_debug(u
->id
, "Got notification message for unit %s", u
->id
);
1485 if (UNIT_VTABLE(u
)->notify_message
)
1486 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1489 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1490 Manager
*m
= userdata
;
1495 assert(m
->notify_fd
== fd
);
1497 if (revents
!= EPOLLIN
) {
1498 log_warning("Got unexpected poll event for notify fd.");
1503 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1504 char buf
[NOTIFY_BUFFER_MAX
+1];
1505 struct iovec iovec
= {
1507 .iov_len
= sizeof(buf
)-1,
1510 struct cmsghdr cmsghdr
;
1511 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1512 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1514 struct msghdr msghdr
= {
1517 .msg_control
= &control
,
1518 .msg_controllen
= sizeof(control
),
1520 struct cmsghdr
*cmsg
;
1521 struct ucred
*ucred
= NULL
;
1524 int *fd_array
= NULL
;
1527 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1529 if (errno
== EAGAIN
|| errno
== EINTR
)
1535 for (cmsg
= CMSG_FIRSTHDR(&msghdr
); cmsg
; cmsg
= CMSG_NXTHDR(&msghdr
, cmsg
)) {
1536 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1538 fd_array
= (int*) CMSG_DATA(cmsg
);
1539 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1541 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1542 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1543 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1545 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1552 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1554 close_many(fd_array
, n_fds
);
1559 if (!ucred
|| ucred
->pid
<= 0) {
1560 log_warning("Received notify message without valid credentials. Ignoring.");
1564 if ((size_t) n
>= sizeof(buf
)) {
1565 log_warning("Received notify message exceeded maximum size. Ignoring.");
1571 /* Notify every unit that might be interested, but try
1572 * to avoid notifying the same one multiple times. */
1573 u1
= manager_get_unit_by_pid(m
, ucred
->pid
);
1575 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1579 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(ucred
->pid
));
1580 if (u2
&& u2
!= u1
) {
1581 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1585 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(ucred
->pid
));
1586 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1587 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1592 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1594 if (fdset_size(fds
) > 0)
1595 log_warning("Got auxiliary fds with notification message, closing all.");
1601 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, siginfo_t
*si
) {
1606 log_unit_debug(u
->id
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1608 unit_unwatch_pid(u
, si
->si_pid
);
1609 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1612 static int manager_dispatch_sigchld(Manager
*m
) {
1618 /* First we call waitd() for a PID and do not reap the
1619 * zombie. That way we can still access /proc/$PID for
1620 * it while it is a zombie. */
1621 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1623 if (errno
== ECHILD
)
1635 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1636 _cleanup_free_
char *name
= NULL
;
1639 get_process_comm(si
.si_pid
, &name
);
1641 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1642 si
.si_pid
, strna(name
),
1643 sigchld_code_to_string(si
.si_code
),
1645 strna(si
.si_code
== CLD_EXITED
1646 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1647 : signal_to_string(si
.si_status
)));
1649 /* And now figure out the unit this belongs
1650 * to, it might be multiple... */
1651 u1
= manager_get_unit_by_pid(m
, si
.si_pid
);
1653 invoke_sigchld_event(m
, u1
, &si
);
1654 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(si
.si_pid
));
1656 invoke_sigchld_event(m
, u2
, &si
);
1657 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(si
.si_pid
));
1658 if (u3
&& u3
!= u2
&& u3
!= u1
)
1659 invoke_sigchld_event(m
, u3
, &si
);
1662 /* And now, we actually reap the zombie. */
1663 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1674 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1675 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1678 log_unit_debug(name
, "Activating special unit %s", name
);
1680 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, true, &error
, NULL
);
1682 log_unit_error(name
, "Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1687 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1688 Manager
*m
= userdata
;
1690 struct signalfd_siginfo sfsi
;
1691 bool sigchld
= false;
1694 assert(m
->signal_fd
== fd
);
1696 if (revents
!= EPOLLIN
) {
1697 log_warning("Got unexpected events from signal file descriptor.");
1702 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1703 if (n
!= sizeof(sfsi
)) {
1708 if (errno
== EINTR
|| errno
== EAGAIN
)
1714 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1715 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== SYSTEMD_USER
)
1716 ? LOG_DEBUG
: LOG_INFO
,
1719 switch (sfsi
.ssi_signo
) {
1726 if (m
->running_as
== SYSTEMD_SYSTEM
) {
1727 /* This is for compatibility with the
1728 * original sysvinit */
1729 m
->exit_code
= MANAGER_REEXECUTE
;
1736 if (m
->running_as
== SYSTEMD_SYSTEM
) {
1738 /* If the user presses C-A-D more than
1739 * 7 times within 2s, we reboot
1742 if (ratelimit_test(&m
->ctrl_alt_del_ratelimit
))
1743 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1745 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1746 status_printf(NULL
, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1747 m
->exit_code
= MANAGER_REBOOT
;
1753 /* Run the exit target if there is one, if not, just exit. */
1754 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1755 m
->exit_code
= MANAGER_EXIT
;
1762 if (m
->running_as
== SYSTEMD_SYSTEM
)
1763 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1765 /* This is a nop on non-init */
1769 if (m
->running_as
== SYSTEMD_SYSTEM
)
1770 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1772 /* This is a nop on non-init */
1778 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1780 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1781 log_info("Trying to reconnect to bus...");
1785 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1786 log_info("Loading D-Bus service...");
1787 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1794 _cleanup_free_
char *dump
= NULL
;
1795 _cleanup_fclose_
FILE *f
= NULL
;
1798 f
= open_memstream(&dump
, &size
);
1800 log_warning("Failed to allocate memory stream.");
1804 manager_dump_units(m
, f
, "\t");
1805 manager_dump_jobs(m
, f
, "\t");
1808 log_warning("Failed to write status stream");
1813 log_warning("Failed to flush status stream");
1817 log_dump(LOG_INFO
, dump
);
1822 m
->exit_code
= MANAGER_RELOAD
;
1827 /* Starting SIGRTMIN+0 */
1828 static const char * const target_table
[] = {
1829 [0] = SPECIAL_DEFAULT_TARGET
,
1830 [1] = SPECIAL_RESCUE_TARGET
,
1831 [2] = SPECIAL_EMERGENCY_TARGET
,
1832 [3] = SPECIAL_HALT_TARGET
,
1833 [4] = SPECIAL_POWEROFF_TARGET
,
1834 [5] = SPECIAL_REBOOT_TARGET
,
1835 [6] = SPECIAL_KEXEC_TARGET
1838 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1839 static const ManagerExitCode code_table
[] = {
1841 [1] = MANAGER_POWEROFF
,
1842 [2] = MANAGER_REBOOT
,
1846 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1847 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1848 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1849 manager_start_target(m
, target_table
[idx
],
1850 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1854 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1855 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1856 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1860 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1863 log_debug("Enabling showing of status.");
1864 manager_set_show_status(m
, SHOW_STATUS_YES
);
1868 log_debug("Disabling showing of status.");
1869 manager_set_show_status(m
, SHOW_STATUS_NO
);
1873 log_set_max_level(LOG_DEBUG
);
1874 log_notice("Setting log level to debug.");
1878 log_set_max_level(LOG_INFO
);
1879 log_notice("Setting log level to info.");
1883 if (m
->running_as
== SYSTEMD_USER
) {
1884 m
->exit_code
= MANAGER_EXIT
;
1888 /* This is a nop on init */
1892 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1893 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1894 log_notice("Setting log target to journal-or-kmsg.");
1898 log_set_target(LOG_TARGET_CONSOLE
);
1899 log_notice("Setting log target to console.");
1903 log_set_target(LOG_TARGET_KMSG
);
1904 log_notice("Setting log target to kmsg.");
1908 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1915 manager_dispatch_sigchld(m
);
1920 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1921 Manager
*m
= userdata
;
1926 assert(m
->time_change_fd
== fd
);
1928 log_struct(LOG_INFO
,
1929 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1930 LOG_MESSAGE("Time has been changed"),
1933 /* Restart the watch */
1934 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1935 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1937 manager_setup_time_change(m
);
1939 HASHMAP_FOREACH(u
, m
->units
, i
)
1940 if (UNIT_VTABLE(u
)->time_change
)
1941 UNIT_VTABLE(u
)->time_change(u
);
1946 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1947 Manager
*m
= userdata
;
1950 assert(m
->idle_pipe
[2] == fd
);
1952 m
->no_console_output
= m
->n_on_console
> 0;
1954 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
1955 manager_close_idle_pipe(m
);
1960 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1961 Manager
*m
= userdata
;
1968 manager_print_jobs_in_progress(m
);
1970 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1971 r
= sd_event_source_set_time(source
, next
);
1975 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1978 int manager_loop(Manager
*m
) {
1981 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
1984 m
->exit_code
= MANAGER_OK
;
1986 /* Release the path cache */
1987 set_free_free(m
->unit_path_cache
);
1988 m
->unit_path_cache
= NULL
;
1990 manager_check_finished(m
);
1992 /* There might still be some zombies hanging around from
1993 * before we were exec()'ed. Let's reap them. */
1994 r
= manager_dispatch_sigchld(m
);
1998 while (m
->exit_code
== MANAGER_OK
) {
2001 if (m
->runtime_watchdog
> 0 && m
->running_as
== SYSTEMD_SYSTEM
)
2004 if (!ratelimit_test(&rl
)) {
2005 /* Yay, something is going seriously wrong, pause a little */
2006 log_warning("Looping too fast. Throttling execution a little.");
2011 if (manager_dispatch_load_queue(m
) > 0)
2014 if (manager_dispatch_gc_queue(m
) > 0)
2017 if (manager_dispatch_cleanup_queue(m
) > 0)
2020 if (manager_dispatch_cgroup_queue(m
) > 0)
2023 if (manager_dispatch_dbus_queue(m
) > 0)
2026 /* Sleep for half the watchdog time */
2027 if (m
->runtime_watchdog
> 0 && m
->running_as
== SYSTEMD_SYSTEM
) {
2028 wait_usec
= m
->runtime_watchdog
/ 2;
2032 wait_usec
= USEC_INFINITY
;
2034 r
= sd_event_run(m
->event
, wait_usec
);
2036 return log_error_errno(r
, "Failed to run event loop: %m");
2039 return m
->exit_code
;
2042 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2043 _cleanup_free_
char *n
= NULL
;
2051 r
= unit_name_from_dbus_path(s
, &n
);
2055 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2064 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2074 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2078 r
= safe_atou(p
, &id
);
2082 j
= manager_get_job(m
, id
);
2091 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2094 _cleanup_free_
char *p
= NULL
;
2098 audit_fd
= get_audit_fd();
2102 /* Don't generate audit events if the service was already
2103 * started and we're just deserializing */
2104 if (m
->n_reloading
> 0)
2107 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2110 if (u
->type
!= UNIT_SERVICE
)
2113 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
2115 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
2119 msg
= strjoina("unit=", p
);
2120 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2122 /* We aren't allowed to send audit messages?
2123 * Then let's not retry again. */
2126 log_warning_errno(errno
, "Failed to send audit message: %m");
2132 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2133 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2136 _cleanup_free_
char *message
= NULL
;
2137 _cleanup_close_
int fd
= -1;
2139 /* Don't generate plymouth events if the service was already
2140 * started and we're just deserializing */
2141 if (m
->n_reloading
> 0)
2144 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2147 if (detect_container(NULL
) > 0)
2150 if (u
->type
!= UNIT_SERVICE
&&
2151 u
->type
!= UNIT_MOUNT
&&
2152 u
->type
!= UNIT_SWAP
)
2155 /* We set SOCK_NONBLOCK here so that we rather drop the
2156 * message then wait for plymouth */
2157 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2159 log_error_errno(errno
, "socket() failed: %m");
2163 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2165 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2166 log_error_errno(errno
, "connect() failed: %m");
2170 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2176 if (write(fd
, message
, n
+ 1) != n
+ 1)
2177 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2178 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2181 void manager_dispatch_bus_name_owner_changed(
2184 const char* old_owner
,
2185 const char *new_owner
) {
2192 u
= hashmap_get(m
->watch_bus
, name
);
2196 UNIT_VTABLE(u
)->bus_name_owner_change(u
, name
, old_owner
, new_owner
);
2199 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2206 path
= m
->running_as
== SYSTEMD_SYSTEM
? "/run/systemd" : "/tmp";
2207 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2211 log_debug("Serializing state to %s", path
);
2213 f
= fdopen(fd
, "w+");
2224 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2237 fprintf(f
, "current-job-id=%"PRIu32
"\n", m
->current_job_id
);
2238 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2239 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2240 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2242 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2243 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2244 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2245 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2248 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2249 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2250 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2251 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2252 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2253 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2254 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2255 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2258 if (!switching_root
) {
2259 STRV_FOREACH(e
, m
->environment
) {
2260 _cleanup_free_
char *ce
;
2266 fprintf(f
, "env=%s\n", *e
);
2270 if (m
->notify_fd
>= 0) {
2273 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2277 fprintf(f
, "notify-fd=%i\n", copy
);
2278 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2281 if (m
->kdbus_fd
>= 0) {
2284 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2288 fprintf(f
, "kdbus-fd=%i\n", copy
);
2291 bus_track_serialize(m
->subscribed
, f
);
2295 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2303 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2310 assert(m
->n_reloading
> 0);
2316 r
= bus_fdset_add_all(m
, fds
);
2323 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2329 log_debug("Deserializing state...");
2334 char line
[LINE_MAX
], *l
;
2336 if (!fgets(line
, sizeof(line
), f
)) {
2351 if (startswith(l
, "current-job-id=")) {
2354 if (safe_atou32(l
+15, &id
) < 0)
2355 log_debug("Failed to parse current job id value %s", l
+15);
2357 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2359 } else if (startswith(l
, "n-installed-jobs=")) {
2362 if (safe_atou32(l
+17, &n
) < 0)
2363 log_debug("Failed to parse installed jobs counter %s", l
+17);
2365 m
->n_installed_jobs
+= n
;
2367 } else if (startswith(l
, "n-failed-jobs=")) {
2370 if (safe_atou32(l
+14, &n
) < 0)
2371 log_debug("Failed to parse failed jobs counter %s", l
+14);
2373 m
->n_failed_jobs
+= n
;
2375 } else if (startswith(l
, "taint-usr=")) {
2378 b
= parse_boolean(l
+10);
2380 log_debug("Failed to parse taint /usr flag %s", l
+10);
2382 m
->taint_usr
= m
->taint_usr
|| b
;
2384 } else if (startswith(l
, "firmware-timestamp="))
2385 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2386 else if (startswith(l
, "loader-timestamp="))
2387 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2388 else if (startswith(l
, "kernel-timestamp="))
2389 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2390 else if (startswith(l
, "initrd-timestamp="))
2391 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2392 else if (startswith(l
, "userspace-timestamp="))
2393 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2394 else if (startswith(l
, "finish-timestamp="))
2395 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2396 else if (startswith(l
, "security-start-timestamp="))
2397 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2398 else if (startswith(l
, "security-finish-timestamp="))
2399 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2400 else if (startswith(l
, "generators-start-timestamp="))
2401 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2402 else if (startswith(l
, "generators-finish-timestamp="))
2403 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2404 else if (startswith(l
, "units-load-start-timestamp="))
2405 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2406 else if (startswith(l
, "units-load-finish-timestamp="))
2407 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2408 else if (startswith(l
, "env=")) {
2409 _cleanup_free_
char *uce
= NULL
;
2412 r
= cunescape(l
+ 4, UNESCAPE_RELAX
, &uce
);
2416 e
= strv_env_set(m
->environment
, uce
);
2422 strv_free(m
->environment
);
2425 } else if (startswith(l
, "notify-fd=")) {
2428 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2429 log_debug("Failed to parse notify fd: %s", l
+ 10);
2431 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2432 safe_close(m
->notify_fd
);
2433 m
->notify_fd
= fdset_remove(fds
, fd
);
2436 } else if (startswith(l
, "notify-socket=")) {
2445 free(m
->notify_socket
);
2446 m
->notify_socket
= n
;
2448 } else if (startswith(l
, "kdbus-fd=")) {
2451 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2452 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2454 safe_close(m
->kdbus_fd
);
2455 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2461 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2463 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2465 log_debug("Unknown serialization item '%s'", l
);
2471 char name
[UNIT_NAME_MAX
+2];
2474 if (!fgets(name
, sizeof(name
), f
)) {
2485 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2489 r
= unit_deserialize(u
, f
, fds
);
2498 assert(m
->n_reloading
> 0);
2504 int manager_reload(Manager
*m
) {
2506 _cleanup_fclose_
FILE *f
= NULL
;
2507 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2511 r
= manager_open_serialization(m
, &f
);
2516 bus_manager_send_reloading(m
, true);
2524 r
= manager_serialize(m
, f
, fds
, false);
2530 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2535 /* From here on there is no way back. */
2536 manager_clear_jobs_and_units(m
);
2537 manager_undo_generators(m
);
2538 lookup_paths_free(&m
->lookup_paths
);
2540 /* Find new unit paths */
2541 q
= manager_run_generators(m
);
2542 if (q
< 0 && r
>= 0)
2545 q
= lookup_paths_init(
2546 &m
->lookup_paths
, m
->running_as
, true,
2548 m
->generator_unit_path
,
2549 m
->generator_unit_path_early
,
2550 m
->generator_unit_path_late
);
2551 if (q
< 0 && r
>= 0)
2554 manager_build_unit_path_cache(m
);
2556 /* First, enumerate what we can from all config files */
2557 q
= manager_enumerate(m
);
2558 if (q
< 0 && r
>= 0)
2561 /* Second, deserialize our stored data */
2562 q
= manager_deserialize(m
, f
, fds
);
2563 if (q
< 0 && r
>= 0)
2569 /* Re-register notify_fd as event source */
2570 q
= manager_setup_notify(m
);
2571 if (q
< 0 && r
>= 0)
2574 /* Third, fire things up! */
2575 manager_coldplug(m
);
2577 assert(m
->n_reloading
> 0);
2580 m
->send_reloading_done
= true;
2585 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2588 return m
->n_reloading
!= 0;
2591 void manager_reset_failed(Manager
*m
) {
2597 HASHMAP_FOREACH(u
, m
->units
, i
)
2598 unit_reset_failed(u
);
2601 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2607 /* Returns true if the unit is inactive or going down */
2608 u
= manager_get_unit(m
, name
);
2612 return unit_inactive_or_pending(u
);
2615 static void manager_notify_finished(Manager
*m
) {
2616 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2617 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2622 if (m
->running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0) {
2624 /* Note that m->kernel_usec.monotonic is always at 0,
2625 * and m->firmware_usec.monotonic and
2626 * m->loader_usec.monotonic should be considered
2627 * negative values. */
2629 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2630 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2631 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2632 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2634 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2636 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2637 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2639 log_struct(LOG_INFO
,
2640 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2641 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2642 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2643 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2644 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2645 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2646 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2647 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2648 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2651 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2654 log_struct(LOG_INFO
,
2655 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2656 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2657 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2658 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2659 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2660 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2661 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2665 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2666 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2668 log_struct(LOG_INFO
,
2669 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2670 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2671 LOG_MESSAGE("Startup finished in %s.",
2672 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2676 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2680 "STATUS=Startup finished in %s.",
2681 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2684 void manager_check_finished(Manager
*m
) {
2690 if (hashmap_size(m
->jobs
) > 0) {
2692 if (m
->jobs_in_progress_event_source
)
2693 /* Ignore any failure, this is only for feedback */
2694 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
2695 now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2700 manager_flip_auto_status(m
, false);
2702 /* Notify Type=idle units that we are done now */
2703 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
2704 manager_close_idle_pipe(m
);
2706 /* Turn off confirm spawn now */
2707 m
->confirm_spawn
= false;
2709 /* No need to update ask password status when we're going non-interactive */
2710 manager_close_ask_password(m
);
2712 /* This is no longer the first boot */
2713 manager_set_first_boot(m
, false);
2715 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2718 dual_timestamp_get(&m
->finish_timestamp
);
2720 manager_notify_finished(m
);
2722 SET_FOREACH(u
, m
->startup_units
, i
)
2724 cgroup_context_apply(unit_get_cgroup_context(u
), unit_get_cgroup_mask(u
), u
->cgroup_path
, manager_state(m
));
2727 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2738 if (m
->running_as
== SYSTEMD_SYSTEM
&& getpid() == 1) {
2739 /* systemd --system, not running --test */
2741 p
= strappend("/run/systemd/", name
);
2745 r
= mkdir_p_label(p
, 0755);
2747 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2751 } else if (m
->running_as
== SYSTEMD_USER
) {
2752 const char *s
= NULL
;
2754 s
= getenv("XDG_RUNTIME_DIR");
2757 p
= strjoin(s
, "/systemd/", name
, NULL
);
2761 r
= mkdir_p_label(p
, 0755);
2763 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2768 /* systemd --system --test */
2770 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2775 log_error_errno(errno
, "Failed to create generator directory %s: %m",
2786 static void trim_generator_dir(Manager
*m
, char **generator
) {
2793 if (rmdir(*generator
) >= 0) {
2801 static int manager_run_generators(Manager
*m
) {
2802 _cleanup_free_
char **paths
= NULL
;
2803 const char *argv
[5];
2812 paths
= generator_paths(m
->running_as
);
2816 /* Optimize by skipping the whole process by not creating output directories
2817 * if no generators are found. */
2818 STRV_FOREACH(path
, paths
) {
2819 r
= access(*path
, F_OK
);
2822 if (errno
!= ENOENT
)
2823 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2828 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2832 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2836 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2840 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2841 argv
[1] = m
->generator_unit_path
;
2842 argv
[2] = m
->generator_unit_path_early
;
2843 argv
[3] = m
->generator_unit_path_late
;
2846 RUN_WITH_UMASK(0022)
2847 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2850 trim_generator_dir(m
, &m
->generator_unit_path
);
2851 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2852 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2856 static void remove_generator_dir(Manager
*m
, char **generator
) {
2863 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2864 (void) rm_rf(*generator
, REMOVE_ROOT
);
2870 static void manager_undo_generators(Manager
*m
) {
2873 remove_generator_dir(m
, &m
->generator_unit_path
);
2874 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2875 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2878 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2879 char **a
= NULL
, **b
= NULL
, **l
;
2884 if (!strv_isempty(minus
)) {
2885 a
= strv_env_delete(l
, 1, minus
);
2892 if (!strv_isempty(plus
)) {
2893 b
= strv_env_merge(2, l
, plus
);
2902 if (m
->environment
!= l
)
2903 strv_free(m
->environment
);
2910 manager_clean_environment(m
);
2911 strv_sort(m
->environment
);
2916 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2921 for (i
= 0; i
< _RLIMIT_MAX
; 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
!= SYSTEMD_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
!= SYSTEMD_SYSTEM
)
2965 m
->show_status
= mode
;
2968 touch("/run/systemd/show-status");
2970 unlink("/run/systemd/show-status");
2973 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
2976 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2979 if (m
->no_console_output
)
2982 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
2985 /* If we cannot find out the status properly, just proceed. */
2986 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
2989 if (m
->show_status
> 0)
2995 void manager_set_first_boot(Manager
*m
, bool b
) {
2998 if (m
->running_as
!= SYSTEMD_SYSTEM
)
3004 touch("/run/systemd/first-boot");
3006 unlink("/run/systemd/first-boot");
3009 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
3012 /* If m is NULL, assume we're after shutdown and let the messages through. */
3014 if (m
&& !manager_get_show_status(m
, type
))
3017 /* XXX We should totally drop the check for ephemeral here
3018 * and thus effectively make 'Type=idle' pointless. */
3019 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3022 va_start(ap
, format
);
3023 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3027 int manager_get_unit_by_path(Manager
*m
, const char *path
, const char *suffix
, Unit
**_found
) {
3028 _cleanup_free_
char *p
= NULL
;
3037 r
= unit_name_from_path(path
, suffix
, &p
);
3041 found
= manager_get_unit(m
, p
);
3051 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3052 char p
[strlen(path
)+1];
3058 path_kill_slashes(p
);
3060 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3063 const char *manager_get_runtime_prefix(Manager
*m
) {
3066 return m
->running_as
== SYSTEMD_SYSTEM
?
3068 getenv("XDG_RUNTIME_DIR");
3071 void manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
3075 assert(u
->manager
== m
);
3077 size
= set_size(m
->failed_units
);
3080 if (set_put(m
->failed_units
, u
) < 0)
3083 set_remove(m
->failed_units
, u
);
3085 if (set_size(m
->failed_units
) != size
)
3086 bus_manager_send_change_signal(m
);
3089 ManagerState
manager_state(Manager
*m
) {
3094 /* Did we ever finish booting? If not then we are still starting up */
3095 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3097 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3098 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3099 return MANAGER_INITIALIZING
;
3101 return MANAGER_STARTING
;
3104 /* Is the special shutdown target queued? If so, we are in shutdown state */
3105 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3106 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))
3107 return MANAGER_STOPPING
;
3109 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3110 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3111 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3112 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3113 return MANAGER_MAINTENANCE
;
3115 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3116 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3117 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3118 return MANAGER_MAINTENANCE
;
3120 /* Are there any failed units? If so, we are in degraded mode */
3121 if (set_size(m
->failed_units
) > 0)
3122 return MANAGER_DEGRADED
;
3124 return MANAGER_RUNNING
;
3127 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3128 [MANAGER_INITIALIZING
] = "initializing",
3129 [MANAGER_STARTING
] = "starting",
3130 [MANAGER_RUNNING
] = "running",
3131 [MANAGER_DEGRADED
] = "degraded",
3132 [MANAGER_MAINTENANCE
] = "maintenance",
3133 [MANAGER_STOPPING
] = "stopping",
3136 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);