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/>.
28 #include <sys/epoll.h>
29 #include <sys/inotify.h>
30 #include <sys/ioctl.h>
31 #include <sys/reboot.h>
32 #include <sys/timerfd.h>
40 #include "sd-daemon.h"
41 #include "sd-messages.h"
44 #include "boot-timestamps.h"
45 #include "bus-common-errors.h"
46 #include "bus-error.h"
47 #include "bus-kernel.h"
50 #include "dbus-manager.h"
51 #include "dbus-unit.h"
54 #include "exit-status.h"
56 #include "locale-setup.h"
61 #include "path-lookup.h"
62 #include "path-util.h"
63 #include "process-util.h"
64 #include "ratelimit.h"
66 #include "signal-util.h"
69 #include "terminal-util.h"
70 #include "time-util.h"
71 #include "transaction.h"
72 #include "unit-name.h"
78 /* Initial delay and the interval for printing status messages about running jobs */
79 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
80 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
81 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
83 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
84 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
85 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
86 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
87 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
88 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
89 static int manager_run_generators(Manager
*m
);
90 static void manager_undo_generators(Manager
*m
);
92 static void manager_watch_jobs_in_progress(Manager
*m
) {
98 if (m
->jobs_in_progress_event_source
)
101 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
102 r
= sd_event_add_time(
104 &m
->jobs_in_progress_event_source
,
107 manager_dispatch_jobs_in_progress
, m
);
111 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
114 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
116 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
119 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
120 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
124 p
= mempset(p
, ' ', pos
-2);
125 p
= stpcpy(p
, ANSI_RED
);
129 if (pos
> 0 && pos
<= width
) {
130 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
134 p
= stpcpy(p
, ANSI_NORMAL
);
137 p
= stpcpy(p
, ANSI_RED
);
140 p
= mempset(p
, ' ', width
-1-pos
);
141 strcpy(p
, ANSI_NORMAL
);
145 void manager_flip_auto_status(Manager
*m
, bool enable
) {
149 if (m
->show_status
== SHOW_STATUS_AUTO
)
150 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
152 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
153 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
157 static void manager_print_jobs_in_progress(Manager
*m
) {
158 _cleanup_free_
char *job_of_n
= NULL
;
161 unsigned counter
= 0, print_nr
;
162 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
164 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
168 assert(m
->n_running_jobs
> 0);
170 manager_flip_auto_status(m
, true);
172 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
174 HASHMAP_FOREACH(j
, m
->jobs
, i
)
175 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
178 /* m->n_running_jobs must be consistent with the contents of m->jobs,
179 * so the above loop must have succeeded in finding j. */
180 assert(counter
== print_nr
+ 1);
183 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
185 cylon_pos
= 14 - cylon_pos
;
186 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
188 m
->jobs_in_progress_iteration
++;
190 if (m
->n_running_jobs
> 1) {
191 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
195 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
196 if (job_get_timeout(j
, &x
) > 0)
197 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
199 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
200 "%sA %s job is running for %s (%s / %s)",
202 job_type_to_string(j
->type
),
203 unit_description(j
->unit
),
207 static int have_ask_password(void) {
208 _cleanup_closedir_
DIR *dir
;
210 dir
= opendir("/run/systemd/ask-password");
223 if (!de
&& errno
!= 0)
228 if (startswith(de
->d_name
, "ask."))
233 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
234 int fd
, uint32_t revents
, void *userdata
) {
235 Manager
*m
= userdata
;
241 m
->have_ask_password
= have_ask_password();
242 if (m
->have_ask_password
< 0)
243 /* Log error but continue. Negative have_ask_password
244 * is treated as unknown status. */
245 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
250 static void manager_close_ask_password(Manager
*m
) {
253 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
254 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
255 m
->have_ask_password
= -EINVAL
;
258 static int manager_check_ask_password(Manager
*m
) {
263 if (!m
->ask_password_event_source
) {
264 assert(m
->ask_password_inotify_fd
< 0);
266 mkdir_p_label("/run/systemd/ask-password", 0755);
268 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
269 if (m
->ask_password_inotify_fd
< 0)
270 return log_error_errno(errno
, "inotify_init1() failed: %m");
272 if (inotify_add_watch(m
->ask_password_inotify_fd
, "/run/systemd/ask-password", IN_CREATE
|IN_DELETE
|IN_MOVE
) < 0) {
273 log_error_errno(errno
, "Failed to add watch on /run/systemd/ask-password: %m");
274 manager_close_ask_password(m
);
278 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
279 m
->ask_password_inotify_fd
, EPOLLIN
,
280 manager_dispatch_ask_password_fd
, m
);
282 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
283 manager_close_ask_password(m
);
287 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
289 /* Queries might have been added meanwhile... */
290 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
291 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
294 return m
->have_ask_password
;
297 static int manager_watch_idle_pipe(Manager
*m
) {
302 if (m
->idle_pipe_event_source
)
305 if (m
->idle_pipe
[2] < 0)
308 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
310 return log_error_errno(r
, "Failed to watch idle pipe: %m");
312 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
317 static void manager_close_idle_pipe(Manager
*m
) {
320 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
322 safe_close_pair(m
->idle_pipe
);
323 safe_close_pair(m
->idle_pipe
+ 2);
326 static int manager_setup_time_change(Manager
*m
) {
329 /* We only care for the cancellation event, hence we set the
330 * timeout to the latest possible value. */
331 struct itimerspec its
= {
332 .it_value
.tv_sec
= TIME_T_MAX
,
336 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX
));
341 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
342 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
344 m
->time_change_fd
= timerfd_create(CLOCK_REALTIME
, TFD_NONBLOCK
|TFD_CLOEXEC
);
345 if (m
->time_change_fd
< 0)
346 return log_error_errno(errno
, "Failed to create timerfd: %m");
348 if (timerfd_settime(m
->time_change_fd
, TFD_TIMER_ABSTIME
|TFD_TIMER_CANCEL_ON_SET
, &its
, NULL
) < 0) {
349 log_debug_errno(errno
, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
350 m
->time_change_fd
= safe_close(m
->time_change_fd
);
354 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
356 return log_error_errno(r
, "Failed to create time change event source: %m");
358 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
360 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
365 static int enable_special_signals(Manager
*m
) {
366 _cleanup_close_
int fd
= -1;
370 /* Enable that we get SIGINT on control-alt-del. In containers
371 * this will fail with EPERM (older) or EINVAL (newer), so
373 if (reboot(RB_DISABLE_CAD
) < 0 && errno
!= EPERM
&& errno
!= EINVAL
)
374 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
376 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
378 /* Support systems without virtual console */
380 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
382 /* Enable that we get SIGWINCH on kbrequest */
383 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
384 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
390 static int manager_setup_signals(Manager
*m
) {
391 struct sigaction sa
= {
392 .sa_handler
= SIG_DFL
,
393 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
400 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
402 /* We make liberal use of realtime signals here. On
403 * Linux/glibc we have 30 of them (with the exception of Linux
404 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
407 assert_se(sigemptyset(&mask
) == 0);
408 sigset_add_many(&mask
,
409 SIGCHLD
, /* Child died */
410 SIGTERM
, /* Reexecute daemon */
411 SIGHUP
, /* Reload configuration */
412 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
413 SIGUSR2
, /* systemd: dump status */
414 SIGINT
, /* Kernel sends us this on control-alt-del */
415 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
416 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
418 SIGRTMIN
+0, /* systemd: start default.target */
419 SIGRTMIN
+1, /* systemd: isolate rescue.target */
420 SIGRTMIN
+2, /* systemd: isolate emergency.target */
421 SIGRTMIN
+3, /* systemd: start halt.target */
422 SIGRTMIN
+4, /* systemd: start poweroff.target */
423 SIGRTMIN
+5, /* systemd: start reboot.target */
424 SIGRTMIN
+6, /* systemd: start kexec.target */
426 /* ... space for more special targets ... */
428 SIGRTMIN
+13, /* systemd: Immediate halt */
429 SIGRTMIN
+14, /* systemd: Immediate poweroff */
430 SIGRTMIN
+15, /* systemd: Immediate reboot */
431 SIGRTMIN
+16, /* systemd: Immediate kexec */
433 /* ... space for more immediate system state changes ... */
435 SIGRTMIN
+20, /* systemd: enable status messages */
436 SIGRTMIN
+21, /* systemd: disable status messages */
437 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
438 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
439 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
441 /* .. one free signal here ... */
443 #if !defined(__hppa64__) && !defined(__hppa__)
444 /* Apparently Linux on hppa has fewer RT
445 * signals (SIGRTMAX is SIGRTMIN+25 there),
446 * hence let's not try to make use of them
447 * here. Since these commands are accessible
448 * by different means and only really a safety
449 * net, the missing functionality on hppa
450 * shouldn't matter. */
452 SIGRTMIN
+26, /* systemd: set log target to journal-or-kmsg */
453 SIGRTMIN
+27, /* systemd: set log target to console */
454 SIGRTMIN
+28, /* systemd: set log target to kmsg */
455 SIGRTMIN
+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
457 /* ... one free signal here SIGRTMIN+30 ... */
460 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
462 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
463 if (m
->signal_fd
< 0)
466 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
470 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
472 /* Process signals a bit earlier than the rest of things, but
473 * later than notify_fd processing, so that the notify
474 * processing can still figure out to which process/service a
475 * message belongs, before we reap the process. */
476 r
= sd_event_source_set_priority(m
->signal_event_source
, -5);
480 if (m
->running_as
== MANAGER_SYSTEM
)
481 return enable_special_signals(m
);
486 static void manager_clean_environment(Manager
*m
) {
489 /* Let's remove some environment variables that we
490 * need ourselves to communicate with our clients */
504 static int manager_default_environment(Manager
*m
) {
507 if (m
->running_as
== MANAGER_SYSTEM
) {
508 /* The system manager always starts with a clean
509 * environment for its children. It does not import
510 * the kernel or the parents exported variables.
512 * The initial passed environ is untouched to keep
513 * /proc/self/environ valid; it is used for tagging
514 * the init process inside containers. */
515 m
->environment
= strv_new("PATH=" DEFAULT_PATH
,
518 /* Import locale variables LC_*= from configuration */
519 locale_setup(&m
->environment
);
521 /* The user manager passes its own environment
522 * along to its children. */
523 m
->environment
= strv_copy(environ
);
529 manager_clean_environment(m
);
530 strv_sort(m
->environment
);
536 int manager_new(ManagerRunningAs running_as
, bool test_run
, Manager
**_m
) {
538 static const char * const unit_log_fields
[_MANAGER_RUNNING_AS_MAX
] = {
539 [MANAGER_SYSTEM
] = "UNIT=",
540 [MANAGER_USER
] = "USER_UNIT=",
543 static const char * const unit_log_format_strings
[_MANAGER_RUNNING_AS_MAX
] = {
544 [MANAGER_SYSTEM
] = "UNIT=%s",
545 [MANAGER_USER
] = "USER_UNIT=%s",
552 assert(running_as
>= 0);
553 assert(running_as
< _MANAGER_RUNNING_AS_MAX
);
555 m
= new0(Manager
, 1);
560 if (running_as
== MANAGER_SYSTEM
&& detect_container() <= 0)
561 boot_timestamps(&m
->userspace_timestamp
, &m
->firmware_timestamp
, &m
->loader_timestamp
);
564 m
->running_as
= running_as
;
565 m
->exit_code
= _MANAGER_EXIT_CODE_INVALID
;
566 m
->default_timer_accuracy_usec
= USEC_PER_MINUTE
;
568 /* Prepare log fields we can use for structured logging */
569 m
->unit_log_field
= unit_log_fields
[running_as
];
570 m
->unit_log_format_string
= unit_log_format_strings
[running_as
];
572 m
->idle_pipe
[0] = m
->idle_pipe
[1] = m
->idle_pipe
[2] = m
->idle_pipe
[3] = -1;
574 m
->pin_cgroupfs_fd
= m
->notify_fd
= m
->signal_fd
= m
->time_change_fd
=
575 m
->dev_autofs_fd
= m
->private_listen_fd
= m
->kdbus_fd
= m
->cgroup_inotify_fd
= -1;
577 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
579 m
->ask_password_inotify_fd
= -1;
580 m
->have_ask_password
= -EINVAL
; /* we don't know */
583 m
->cgroup_netclass_registry_last
= CGROUP_NETCLASS_FIXED_MAX
;
585 m
->test_run
= test_run
;
587 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
588 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
590 r
= manager_default_environment(m
);
594 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
598 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
602 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
606 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
610 r
= sd_event_default(&m
->event
);
614 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
618 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
622 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
626 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
628 r
= manager_setup_signals(m
);
632 r
= manager_setup_cgroup(m
);
636 r
= manager_setup_time_change(m
);
640 m
->udev
= udev_new();
646 /* Note that we set up neither kdbus, nor the notify fd
647 * here. We do that after deserialization, since they might
648 * have gotten serialized across the reexec. */
650 m
->taint_usr
= dir_is_empty("/usr") > 0;
660 static int manager_setup_notify(Manager
*m
) {
666 if (m
->notify_fd
< 0) {
667 _cleanup_close_
int fd
= -1;
668 union sockaddr_union sa
= {
669 .sa
.sa_family
= AF_UNIX
,
671 static const int one
= 1;
673 /* First free all secondary fields */
674 m
->notify_socket
= mfree(m
->notify_socket
);
675 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
677 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
679 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
681 if (m
->running_as
== MANAGER_SYSTEM
)
682 m
->notify_socket
= strdup("/run/systemd/notify");
686 e
= getenv("XDG_RUNTIME_DIR");
688 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
692 m
->notify_socket
= strappend(e
, "/systemd/notify");
694 if (!m
->notify_socket
)
697 (void) mkdir_parents_label(m
->notify_socket
, 0755);
698 (void) unlink(m
->notify_socket
);
700 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
701 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
703 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
705 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
707 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
712 log_debug("Using notification socket %s", m
->notify_socket
);
715 if (!m
->notify_event_source
) {
716 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
718 return log_error_errno(r
, "Failed to allocate notify event source: %m");
720 /* Process signals a bit earlier than SIGCHLD, so that we can
721 * still identify to which service an exit message belongs */
722 r
= sd_event_source_set_priority(m
->notify_event_source
, -7);
724 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
726 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
732 static int manager_setup_kdbus(Manager
*m
) {
733 _cleanup_free_
char *p
= NULL
;
737 if (m
->test_run
|| m
->kdbus_fd
>= 0)
739 if (!is_kdbus_available())
740 return -ESOCKTNOSUPPORT
;
742 m
->kdbus_fd
= bus_kernel_create_bus(
743 m
->running_as
== MANAGER_SYSTEM
? "system" : "user",
744 m
->running_as
== MANAGER_SYSTEM
, &p
);
747 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
749 log_debug("Successfully set up kdbus on %s", p
);
754 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
755 bool try_bus_connect
;
765 (m
->running_as
== MANAGER_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
767 /* Try to connect to the buses, if possible. */
768 return bus_init(m
, try_bus_connect
);
771 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
777 while ((u
= m
->cleanup_queue
)) {
778 assert(u
->in_cleanup_queue
);
788 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
789 GC_OFFSET_UNSURE
, /* No clue */
790 GC_OFFSET_GOOD
, /* We still need this unit */
791 GC_OFFSET_BAD
, /* We don't need this unit anymore */
795 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
802 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
803 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
804 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
807 if (u
->in_cleanup_queue
)
810 if (unit_check_gc(u
))
813 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
817 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
818 unit_gc_sweep(other
, gc_marker
);
820 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
823 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
830 /* We were unable to find anything out about this entry, so
831 * let's investigate it later */
832 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
833 unit_add_to_gc_queue(u
);
837 /* We definitely know that this one is not useful anymore, so
838 * let's mark it for deletion */
839 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
840 unit_add_to_cleanup_queue(u
);
844 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
847 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
854 /* log_debug("Running GC..."); */
856 m
->gc_marker
+= _GC_OFFSET_MAX
;
857 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
860 gc_marker
= m
->gc_marker
;
862 while ((u
= m
->gc_queue
)) {
863 assert(u
->in_gc_queue
);
865 unit_gc_sweep(u
, gc_marker
);
867 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
868 u
->in_gc_queue
= false;
872 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
873 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
875 log_unit_debug(u
, "Collecting.");
876 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
877 unit_add_to_cleanup_queue(u
);
881 m
->n_in_gc_queue
= 0;
886 static void manager_clear_jobs_and_units(Manager
*m
) {
891 while ((u
= hashmap_first(m
->units
)))
894 manager_dispatch_cleanup_queue(m
);
896 assert(!m
->load_queue
);
897 assert(!m
->run_queue
);
898 assert(!m
->dbus_unit_queue
);
899 assert(!m
->dbus_job_queue
);
900 assert(!m
->cleanup_queue
);
901 assert(!m
->gc_queue
);
903 assert(hashmap_isempty(m
->jobs
));
904 assert(hashmap_isempty(m
->units
));
907 m
->n_running_jobs
= 0;
910 Manager
* manager_free(Manager
*m
) {
917 manager_clear_jobs_and_units(m
);
919 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
920 if (unit_vtable
[c
]->shutdown
)
921 unit_vtable
[c
]->shutdown(m
);
923 /* If we reexecute ourselves, we keep the root cgroup
925 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
927 manager_undo_generators(m
);
931 hashmap_free(m
->units
);
932 hashmap_free(m
->jobs
);
933 hashmap_free(m
->watch_pids1
);
934 hashmap_free(m
->watch_pids2
);
935 hashmap_free(m
->watch_bus
);
937 set_free(m
->startup_units
);
938 set_free(m
->failed_units
);
940 sd_event_source_unref(m
->signal_event_source
);
941 sd_event_source_unref(m
->notify_event_source
);
942 sd_event_source_unref(m
->time_change_event_source
);
943 sd_event_source_unref(m
->jobs_in_progress_event_source
);
944 sd_event_source_unref(m
->run_queue_event_source
);
946 safe_close(m
->signal_fd
);
947 safe_close(m
->notify_fd
);
948 safe_close(m
->time_change_fd
);
949 safe_close(m
->kdbus_fd
);
951 manager_close_ask_password(m
);
953 manager_close_idle_pipe(m
);
956 sd_event_unref(m
->event
);
958 free(m
->notify_socket
);
960 lookup_paths_free(&m
->lookup_paths
);
961 strv_free(m
->environment
);
963 hashmap_free(m
->cgroup_unit
);
964 set_free_free(m
->unit_path_cache
);
966 hashmap_free(m
->cgroup_netclass_registry
);
968 free(m
->switch_root
);
969 free(m
->switch_root_init
);
971 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
974 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
975 hashmap_free(m
->units_requiring_mounts_for
);
981 int manager_enumerate(Manager
*m
) {
987 /* Let's ask every type to load all units from disk/kernel
988 * that it might know */
989 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
992 if (!unit_type_supported(c
)) {
993 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
997 if (!unit_vtable
[c
]->enumerate
)
1000 q
= unit_vtable
[c
]->enumerate(m
);
1005 manager_dispatch_load_queue(m
);
1009 static void manager_coldplug(Manager
*m
) {
1017 /* Then, let's set up their initial state. */
1018 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1020 /* ignore aliases */
1024 r
= unit_coldplug(u
);
1026 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1030 static void manager_build_unit_path_cache(Manager
*m
) {
1032 _cleanup_closedir_
DIR *d
= NULL
;
1037 set_free_free(m
->unit_path_cache
);
1039 m
->unit_path_cache
= set_new(&string_hash_ops
);
1040 if (!m
->unit_path_cache
) {
1041 log_error("Failed to allocate unit path cache.");
1045 /* This simply builds a list of files we know exist, so that
1046 * we don't always have to go to disk */
1048 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1053 if (errno
!= ENOENT
)
1054 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1058 while ((de
= readdir(d
))) {
1061 if (hidden_file(de
->d_name
))
1064 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1070 r
= set_consume(m
->unit_path_cache
, p
);
1075 d
= safe_closedir(d
);
1081 log_error_errno(r
, "Failed to build unit path cache: %m");
1083 set_free_free(m
->unit_path_cache
);
1084 m
->unit_path_cache
= NULL
;
1088 static int manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1095 HASHMAP_FOREACH(u
, m
->units
, i
) {
1097 if (fdset_size(fds
) <= 0)
1100 if (UNIT_VTABLE(u
)->distribute_fds
) {
1101 r
= UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1110 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1115 dual_timestamp_get(&m
->generators_start_timestamp
);
1116 r
= manager_run_generators(m
);
1117 dual_timestamp_get(&m
->generators_finish_timestamp
);
1121 r
= lookup_paths_init(
1122 &m
->lookup_paths
, m
->running_as
, true,
1124 m
->generator_unit_path
,
1125 m
->generator_unit_path_early
,
1126 m
->generator_unit_path_late
);
1130 manager_build_unit_path_cache(m
);
1132 /* If we will deserialize make sure that during enumeration
1133 * this is already known, so we increase the counter here
1138 /* First, enumerate what we can from all config files */
1139 dual_timestamp_get(&m
->units_load_start_timestamp
);
1140 r
= manager_enumerate(m
);
1141 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1143 /* Second, deserialize if there is something to deserialize */
1145 r
= manager_deserialize(m
, serialization
, fds
);
1147 /* Any fds left? Find some unit which wants them. This is
1148 * useful to allow container managers to pass some file
1149 * descriptors to us pre-initialized. This enables
1150 * socket-based activation of entire containers. */
1151 if (fdset_size(fds
) > 0) {
1152 q
= manager_distribute_fds(m
, fds
);
1153 if (q
< 0 && r
== 0)
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
, bool override
, 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, override
, 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
, bool override
, 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
, override
, e
, _ret
);
1256 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1259 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1262 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1266 return hashmap_get(m
->units
, name
);
1269 unsigned manager_dispatch_load_queue(Manager
*m
) {
1275 /* Make sure we are not run recursively */
1276 if (m
->dispatching_load_queue
)
1279 m
->dispatching_load_queue
= true;
1281 /* Dispatches the load queue. Takes a unit from the queue and
1282 * tries to load its data until the queue is empty */
1284 while ((u
= m
->load_queue
)) {
1285 assert(u
->in_load_queue
);
1291 m
->dispatching_load_queue
= false;
1295 int manager_load_unit_prepare(
1307 assert(name
|| path
);
1309 /* This will prepare the unit for loading, but not actually
1310 * load anything from disk. */
1312 if (path
&& !is_path(path
))
1313 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1316 name
= basename(path
);
1318 t
= unit_name_to_type(name
);
1320 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1321 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1323 ret
= manager_get_unit(m
, name
);
1329 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1334 ret
->fragment_path
= strdup(path
);
1335 if (!ret
->fragment_path
) {
1341 r
= unit_add_name(ret
, name
);
1347 unit_add_to_load_queue(ret
);
1348 unit_add_to_dbus_queue(ret
);
1349 unit_add_to_gc_queue(ret
);
1357 int manager_load_unit(
1368 /* This will load the service information files, but not actually
1369 * start any services or anything. */
1371 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1375 manager_dispatch_load_queue(m
);
1378 *_ret
= unit_follow_merge(*_ret
);
1383 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1390 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1391 job_dump(j
, f
, prefix
);
1394 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1402 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1404 unit_dump(u
, f
, prefix
);
1407 void manager_clear_jobs(Manager
*m
) {
1412 while ((j
= hashmap_first(m
->jobs
)))
1413 /* No need to recurse. We're cancelling all jobs. */
1414 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1417 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1418 Manager
*m
= userdata
;
1424 while ((j
= m
->run_queue
)) {
1425 assert(j
->installed
);
1426 assert(j
->in_run_queue
);
1428 job_run_and_invalidate(j
);
1431 if (m
->n_running_jobs
> 0)
1432 manager_watch_jobs_in_progress(m
);
1434 if (m
->n_on_console
> 0)
1435 manager_watch_idle_pipe(m
);
1440 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1447 if (m
->dispatching_dbus_queue
)
1450 m
->dispatching_dbus_queue
= true;
1452 while ((u
= m
->dbus_unit_queue
)) {
1453 assert(u
->in_dbus_queue
);
1455 bus_unit_send_change_signal(u
);
1459 while ((j
= m
->dbus_job_queue
)) {
1460 assert(j
->in_dbus_queue
);
1462 bus_job_send_change_signal(j
);
1466 m
->dispatching_dbus_queue
= false;
1468 if (m
->send_reloading_done
) {
1469 m
->send_reloading_done
= false;
1471 bus_manager_send_reloading(m
, false);
1474 if (m
->queued_message
)
1475 bus_send_queued_message(m
);
1480 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, char *buf
, size_t n
, FDSet
*fds
) {
1481 _cleanup_strv_free_
char **tags
= NULL
;
1488 tags
= strv_split(buf
, "\n\r");
1494 if (UNIT_VTABLE(u
)->notify_message
)
1495 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1497 log_unit_debug(u
, "Got notification message for unit. Ignoring.");
1500 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1501 Manager
*m
= userdata
;
1506 assert(m
->notify_fd
== fd
);
1508 if (revents
!= EPOLLIN
) {
1509 log_warning("Got unexpected poll event for notify fd.");
1514 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1515 char buf
[NOTIFY_BUFFER_MAX
+1];
1516 struct iovec iovec
= {
1518 .iov_len
= sizeof(buf
)-1,
1521 struct cmsghdr cmsghdr
;
1522 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1523 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1525 struct msghdr msghdr
= {
1528 .msg_control
= &control
,
1529 .msg_controllen
= sizeof(control
),
1531 struct cmsghdr
*cmsg
;
1532 struct ucred
*ucred
= NULL
;
1535 int *fd_array
= NULL
;
1538 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1540 if (errno
== EAGAIN
|| errno
== EINTR
)
1546 CMSG_FOREACH(cmsg
, &msghdr
) {
1547 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1549 fd_array
= (int*) CMSG_DATA(cmsg
);
1550 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1552 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1553 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1554 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1556 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1563 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1565 close_many(fd_array
, n_fds
);
1570 if (!ucred
|| ucred
->pid
<= 0) {
1571 log_warning("Received notify message without valid credentials. Ignoring.");
1575 if ((size_t) n
>= sizeof(buf
)) {
1576 log_warning("Received notify message exceeded maximum size. Ignoring.");
1582 /* Notify every unit that might be interested, but try
1583 * to avoid notifying the same one multiple times. */
1584 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
1586 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1590 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(ucred
->pid
));
1591 if (u2
&& u2
!= u1
) {
1592 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1596 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(ucred
->pid
));
1597 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1598 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1603 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1605 if (fdset_size(fds
) > 0)
1606 log_warning("Got auxiliary fds with notification message, closing all.");
1612 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, siginfo_t
*si
) {
1617 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1619 unit_unwatch_pid(u
, si
->si_pid
);
1620 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1623 static int manager_dispatch_sigchld(Manager
*m
) {
1629 /* First we call waitd() for a PID and do not reap the
1630 * zombie. That way we can still access /proc/$PID for
1631 * it while it is a zombie. */
1632 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1634 if (errno
== ECHILD
)
1646 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1647 _cleanup_free_
char *name
= NULL
;
1650 get_process_comm(si
.si_pid
, &name
);
1652 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1653 si
.si_pid
, strna(name
),
1654 sigchld_code_to_string(si
.si_code
),
1656 strna(si
.si_code
== CLD_EXITED
1657 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1658 : signal_to_string(si
.si_status
)));
1660 /* And now figure out the unit this belongs
1661 * to, it might be multiple... */
1662 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
1664 invoke_sigchld_event(m
, u1
, &si
);
1665 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(si
.si_pid
));
1667 invoke_sigchld_event(m
, u2
, &si
);
1668 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(si
.si_pid
));
1669 if (u3
&& u3
!= u2
&& u3
!= u1
)
1670 invoke_sigchld_event(m
, u3
, &si
);
1673 /* And now, we actually reap the zombie. */
1674 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1685 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1686 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1689 log_debug("Activating special unit %s", name
);
1691 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, true, &error
, NULL
);
1693 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1698 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1699 Manager
*m
= userdata
;
1701 struct signalfd_siginfo sfsi
;
1702 bool sigchld
= false;
1706 assert(m
->signal_fd
== fd
);
1708 if (revents
!= EPOLLIN
) {
1709 log_warning("Got unexpected events from signal file descriptor.");
1714 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1715 if (n
!= sizeof(sfsi
)) {
1720 if (errno
== EINTR
|| errno
== EAGAIN
)
1726 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1727 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== MANAGER_USER
)
1728 ? LOG_DEBUG
: LOG_INFO
,
1731 switch (sfsi
.ssi_signo
) {
1738 if (m
->running_as
== MANAGER_SYSTEM
) {
1739 /* This is for compatibility with the
1740 * original sysvinit */
1741 m
->exit_code
= MANAGER_REEXECUTE
;
1748 if (m
->running_as
== MANAGER_SYSTEM
) {
1750 /* If the user presses C-A-D more than
1751 * 7 times within 2s, we reboot
1754 if (ratelimit_test(&m
->ctrl_alt_del_ratelimit
))
1755 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1757 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1758 status_printf(NULL
, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1759 m
->exit_code
= MANAGER_REBOOT
;
1765 /* Run the exit target if there is one, if not, just exit. */
1766 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1767 m
->exit_code
= MANAGER_EXIT
;
1774 if (m
->running_as
== MANAGER_SYSTEM
)
1775 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1777 /* This is a nop on non-init */
1781 if (m
->running_as
== MANAGER_SYSTEM
)
1782 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1784 /* This is a nop on non-init */
1790 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1792 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1793 log_info("Trying to reconnect to bus...");
1797 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1798 log_info("Loading D-Bus service...");
1799 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1806 _cleanup_free_
char *dump
= NULL
;
1807 _cleanup_fclose_
FILE *f
= NULL
;
1810 f
= open_memstream(&dump
, &size
);
1812 log_warning_errno(errno
, "Failed to allocate memory stream: %m");
1816 manager_dump_units(m
, f
, "\t");
1817 manager_dump_jobs(m
, f
, "\t");
1819 r
= fflush_and_check(f
);
1821 log_warning_errno(r
, "Failed to write status stream: %m");
1825 log_dump(LOG_INFO
, dump
);
1830 m
->exit_code
= MANAGER_RELOAD
;
1835 /* Starting SIGRTMIN+0 */
1836 static const char * const target_table
[] = {
1837 [0] = SPECIAL_DEFAULT_TARGET
,
1838 [1] = SPECIAL_RESCUE_TARGET
,
1839 [2] = SPECIAL_EMERGENCY_TARGET
,
1840 [3] = SPECIAL_HALT_TARGET
,
1841 [4] = SPECIAL_POWEROFF_TARGET
,
1842 [5] = SPECIAL_REBOOT_TARGET
,
1843 [6] = SPECIAL_KEXEC_TARGET
1846 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1847 static const ManagerExitCode code_table
[] = {
1849 [1] = MANAGER_POWEROFF
,
1850 [2] = MANAGER_REBOOT
,
1854 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1855 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1856 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1857 manager_start_target(m
, target_table
[idx
],
1858 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1862 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1863 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1864 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1868 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1871 log_debug("Enabling showing of status.");
1872 manager_set_show_status(m
, SHOW_STATUS_YES
);
1876 log_debug("Disabling showing of status.");
1877 manager_set_show_status(m
, SHOW_STATUS_NO
);
1881 log_set_max_level(LOG_DEBUG
);
1882 log_notice("Setting log level to debug.");
1886 log_set_max_level(LOG_INFO
);
1887 log_notice("Setting log level to info.");
1891 if (m
->running_as
== MANAGER_USER
) {
1892 m
->exit_code
= MANAGER_EXIT
;
1896 /* This is a nop on init */
1900 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1901 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1902 log_notice("Setting log target to journal-or-kmsg.");
1906 log_set_target(LOG_TARGET_CONSOLE
);
1907 log_notice("Setting log target to console.");
1911 log_set_target(LOG_TARGET_KMSG
);
1912 log_notice("Setting log target to kmsg.");
1916 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1923 manager_dispatch_sigchld(m
);
1928 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1929 Manager
*m
= userdata
;
1934 assert(m
->time_change_fd
== fd
);
1936 log_struct(LOG_INFO
,
1937 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1938 LOG_MESSAGE("Time has been changed"),
1941 /* Restart the watch */
1942 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1943 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1945 manager_setup_time_change(m
);
1947 HASHMAP_FOREACH(u
, m
->units
, i
)
1948 if (UNIT_VTABLE(u
)->time_change
)
1949 UNIT_VTABLE(u
)->time_change(u
);
1954 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1955 Manager
*m
= userdata
;
1958 assert(m
->idle_pipe
[2] == fd
);
1960 m
->no_console_output
= m
->n_on_console
> 0;
1962 manager_close_idle_pipe(m
);
1967 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1968 Manager
*m
= userdata
;
1975 manager_print_jobs_in_progress(m
);
1977 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1978 r
= sd_event_source_set_time(source
, next
);
1982 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1985 int manager_loop(Manager
*m
) {
1988 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
1991 m
->exit_code
= MANAGER_OK
;
1993 /* Release the path cache */
1994 set_free_free(m
->unit_path_cache
);
1995 m
->unit_path_cache
= NULL
;
1997 manager_check_finished(m
);
1999 /* There might still be some zombies hanging around from
2000 * before we were exec()'ed. Let's reap them. */
2001 r
= manager_dispatch_sigchld(m
);
2005 while (m
->exit_code
== MANAGER_OK
) {
2008 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
)
2011 if (!ratelimit_test(&rl
)) {
2012 /* Yay, something is going seriously wrong, pause a little */
2013 log_warning("Looping too fast. Throttling execution a little.");
2018 if (manager_dispatch_load_queue(m
) > 0)
2021 if (manager_dispatch_gc_queue(m
) > 0)
2024 if (manager_dispatch_cleanup_queue(m
) > 0)
2027 if (manager_dispatch_cgroup_queue(m
) > 0)
2030 if (manager_dispatch_dbus_queue(m
) > 0)
2033 /* Sleep for half the watchdog time */
2034 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
) {
2035 wait_usec
= m
->runtime_watchdog
/ 2;
2039 wait_usec
= USEC_INFINITY
;
2041 r
= sd_event_run(m
->event
, wait_usec
);
2043 return log_error_errno(r
, "Failed to run event loop: %m");
2046 return m
->exit_code
;
2049 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2050 _cleanup_free_
char *n
= NULL
;
2058 r
= unit_name_from_dbus_path(s
, &n
);
2062 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2071 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2081 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2085 r
= safe_atou(p
, &id
);
2089 j
= manager_get_job(m
, id
);
2098 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2101 _cleanup_free_
char *p
= NULL
;
2105 audit_fd
= get_audit_fd();
2109 /* Don't generate audit events if the service was already
2110 * started and we're just deserializing */
2111 if (m
->n_reloading
> 0)
2114 if (m
->running_as
!= MANAGER_SYSTEM
)
2117 if (u
->type
!= UNIT_SERVICE
)
2120 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
2122 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
2126 msg
= strjoina("unit=", p
);
2127 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2129 /* We aren't allowed to send audit messages?
2130 * Then let's not retry again. */
2133 log_warning_errno(errno
, "Failed to send audit message: %m");
2139 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2140 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2143 _cleanup_free_
char *message
= NULL
;
2144 _cleanup_close_
int fd
= -1;
2146 /* Don't generate plymouth events if the service was already
2147 * started and we're just deserializing */
2148 if (m
->n_reloading
> 0)
2151 if (m
->running_as
!= MANAGER_SYSTEM
)
2154 if (detect_container() > 0)
2157 if (u
->type
!= UNIT_SERVICE
&&
2158 u
->type
!= UNIT_MOUNT
&&
2159 u
->type
!= UNIT_SWAP
)
2162 /* We set SOCK_NONBLOCK here so that we rather drop the
2163 * message then wait for plymouth */
2164 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2166 log_error_errno(errno
, "socket() failed: %m");
2170 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2172 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2173 log_error_errno(errno
, "connect() failed: %m");
2177 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2183 if (write(fd
, message
, n
+ 1) != n
+ 1)
2184 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2185 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2188 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2195 path
= m
->running_as
== MANAGER_SYSTEM
? "/run/systemd" : "/tmp";
2196 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2200 log_debug("Serializing state to %s", path
);
2202 f
= fdopen(fd
, "w+");
2213 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2226 fprintf(f
, "current-job-id=%"PRIu32
"\n", m
->current_job_id
);
2227 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2228 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2229 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2231 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2232 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2233 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2234 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2237 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2238 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2239 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2240 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2241 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2242 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2243 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2244 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2247 if (!switching_root
) {
2248 STRV_FOREACH(e
, m
->environment
) {
2249 _cleanup_free_
char *ce
;
2255 fprintf(f
, "env=%s\n", *e
);
2259 if (m
->notify_fd
>= 0) {
2262 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2266 fprintf(f
, "notify-fd=%i\n", copy
);
2267 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2270 if (m
->kdbus_fd
>= 0) {
2273 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2277 fprintf(f
, "kdbus-fd=%i\n", copy
);
2280 bus_track_serialize(m
->subscribed
, f
);
2284 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2292 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2299 assert(m
->n_reloading
> 0);
2305 r
= bus_fdset_add_all(m
, fds
);
2312 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2318 log_debug("Deserializing state...");
2323 char line
[LINE_MAX
], *l
;
2325 if (!fgets(line
, sizeof(line
), f
)) {
2340 if (startswith(l
, "current-job-id=")) {
2343 if (safe_atou32(l
+15, &id
) < 0)
2344 log_debug("Failed to parse current job id value %s", l
+15);
2346 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2348 } else if (startswith(l
, "n-installed-jobs=")) {
2351 if (safe_atou32(l
+17, &n
) < 0)
2352 log_debug("Failed to parse installed jobs counter %s", l
+17);
2354 m
->n_installed_jobs
+= n
;
2356 } else if (startswith(l
, "n-failed-jobs=")) {
2359 if (safe_atou32(l
+14, &n
) < 0)
2360 log_debug("Failed to parse failed jobs counter %s", l
+14);
2362 m
->n_failed_jobs
+= n
;
2364 } else if (startswith(l
, "taint-usr=")) {
2367 b
= parse_boolean(l
+10);
2369 log_debug("Failed to parse taint /usr flag %s", l
+10);
2371 m
->taint_usr
= m
->taint_usr
|| b
;
2373 } else if (startswith(l
, "firmware-timestamp="))
2374 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2375 else if (startswith(l
, "loader-timestamp="))
2376 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2377 else if (startswith(l
, "kernel-timestamp="))
2378 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2379 else if (startswith(l
, "initrd-timestamp="))
2380 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2381 else if (startswith(l
, "userspace-timestamp="))
2382 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2383 else if (startswith(l
, "finish-timestamp="))
2384 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2385 else if (startswith(l
, "security-start-timestamp="))
2386 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2387 else if (startswith(l
, "security-finish-timestamp="))
2388 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2389 else if (startswith(l
, "generators-start-timestamp="))
2390 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2391 else if (startswith(l
, "generators-finish-timestamp="))
2392 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2393 else if (startswith(l
, "units-load-start-timestamp="))
2394 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2395 else if (startswith(l
, "units-load-finish-timestamp="))
2396 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2397 else if (startswith(l
, "env=")) {
2398 _cleanup_free_
char *uce
= NULL
;
2401 r
= cunescape(l
+ 4, UNESCAPE_RELAX
, &uce
);
2405 e
= strv_env_set(m
->environment
, uce
);
2411 strv_free(m
->environment
);
2414 } else if (startswith(l
, "notify-fd=")) {
2417 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2418 log_debug("Failed to parse notify fd: %s", l
+ 10);
2420 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2421 safe_close(m
->notify_fd
);
2422 m
->notify_fd
= fdset_remove(fds
, fd
);
2425 } else if (startswith(l
, "notify-socket=")) {
2434 free(m
->notify_socket
);
2435 m
->notify_socket
= n
;
2437 } else if (startswith(l
, "kdbus-fd=")) {
2440 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2441 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2443 safe_close(m
->kdbus_fd
);
2444 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2450 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2452 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2454 log_debug("Unknown serialization item '%s'", l
);
2460 char name
[UNIT_NAME_MAX
+2];
2463 if (!fgets(name
, sizeof(name
), f
)) {
2474 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2478 r
= unit_deserialize(u
, f
, fds
);
2487 assert(m
->n_reloading
> 0);
2493 int manager_reload(Manager
*m
) {
2495 _cleanup_fclose_
FILE *f
= NULL
;
2496 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2500 r
= manager_open_serialization(m
, &f
);
2505 bus_manager_send_reloading(m
, true);
2513 r
= manager_serialize(m
, f
, fds
, false);
2519 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2524 /* From here on there is no way back. */
2525 manager_clear_jobs_and_units(m
);
2526 manager_undo_generators(m
);
2527 lookup_paths_free(&m
->lookup_paths
);
2529 /* Find new unit paths */
2530 q
= manager_run_generators(m
);
2531 if (q
< 0 && r
>= 0)
2534 q
= lookup_paths_init(
2535 &m
->lookup_paths
, m
->running_as
, true,
2537 m
->generator_unit_path
,
2538 m
->generator_unit_path_early
,
2539 m
->generator_unit_path_late
);
2540 if (q
< 0 && r
>= 0)
2543 manager_build_unit_path_cache(m
);
2545 /* First, enumerate what we can from all config files */
2546 q
= manager_enumerate(m
);
2547 if (q
< 0 && r
>= 0)
2550 /* Second, deserialize our stored data */
2551 q
= manager_deserialize(m
, f
, fds
);
2552 if (q
< 0 && r
>= 0)
2558 /* Re-register notify_fd as event source */
2559 q
= manager_setup_notify(m
);
2560 if (q
< 0 && r
>= 0)
2563 /* Third, fire things up! */
2564 manager_coldplug(m
);
2566 assert(m
->n_reloading
> 0);
2569 m
->send_reloading_done
= true;
2574 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2577 return m
->n_reloading
!= 0;
2580 void manager_reset_failed(Manager
*m
) {
2586 HASHMAP_FOREACH(u
, m
->units
, i
)
2587 unit_reset_failed(u
);
2590 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2596 /* Returns true if the unit is inactive or going down */
2597 u
= manager_get_unit(m
, name
);
2601 return unit_inactive_or_pending(u
);
2604 static void manager_notify_finished(Manager
*m
) {
2605 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2606 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2611 if (m
->running_as
== MANAGER_SYSTEM
&& detect_container() <= 0) {
2613 /* Note that m->kernel_usec.monotonic is always at 0,
2614 * and m->firmware_usec.monotonic and
2615 * m->loader_usec.monotonic should be considered
2616 * negative values. */
2618 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2619 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2620 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2621 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2623 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2625 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2626 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2628 log_struct(LOG_INFO
,
2629 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2630 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2631 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2632 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2633 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2634 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2635 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2636 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2637 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2640 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2643 log_struct(LOG_INFO
,
2644 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2645 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2646 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2647 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2648 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2649 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2650 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2654 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2655 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2657 log_struct(LOG_INFO
,
2658 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2659 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2660 LOG_MESSAGE("Startup finished in %s.",
2661 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2665 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2669 "STATUS=Startup finished in %s.",
2670 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2673 void manager_check_finished(Manager
*m
) {
2676 if (m
->n_reloading
> 0)
2679 /* Verify that we are actually running currently. Initially
2680 * the exit code is set to invalid, and during operation it is
2681 * then set to MANAGER_OK */
2682 if (m
->exit_code
!= MANAGER_OK
)
2685 if (hashmap_size(m
->jobs
) > 0) {
2686 if (m
->jobs_in_progress_event_source
)
2687 /* Ignore any failure, this is only for feedback */
2688 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2693 manager_flip_auto_status(m
, false);
2695 /* Notify Type=idle units that we are done now */
2696 manager_close_idle_pipe(m
);
2698 /* Turn off confirm spawn now */
2699 m
->confirm_spawn
= false;
2701 /* No need to update ask password status when we're going non-interactive */
2702 manager_close_ask_password(m
);
2704 /* This is no longer the first boot */
2705 manager_set_first_boot(m
, false);
2707 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2710 dual_timestamp_get(&m
->finish_timestamp
);
2712 manager_notify_finished(m
);
2714 manager_invalidate_startup_units(m
);
2717 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2728 if (m
->running_as
== MANAGER_SYSTEM
&& getpid() == 1) {
2729 /* systemd --system, not running --test */
2731 p
= strappend("/run/systemd/", name
);
2735 r
= mkdir_p_label(p
, 0755);
2737 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2741 } else if (m
->running_as
== MANAGER_USER
) {
2742 const char *s
= NULL
;
2744 s
= getenv("XDG_RUNTIME_DIR");
2747 p
= strjoin(s
, "/systemd/", name
, NULL
);
2751 r
= mkdir_p_label(p
, 0755);
2753 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2758 /* systemd --system --test */
2760 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2765 log_error_errno(errno
, "Failed to create generator directory %s: %m",
2776 static void trim_generator_dir(Manager
*m
, char **generator
) {
2783 if (rmdir(*generator
) >= 0)
2784 *generator
= mfree(*generator
);
2789 static int manager_run_generators(Manager
*m
) {
2790 _cleanup_strv_free_
char **paths
= NULL
;
2791 const char *argv
[5];
2800 paths
= generator_paths(m
->running_as
);
2804 /* Optimize by skipping the whole process by not creating output directories
2805 * if no generators are found. */
2806 STRV_FOREACH(path
, paths
) {
2807 r
= access(*path
, F_OK
);
2810 if (errno
!= ENOENT
)
2811 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2816 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2820 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2824 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2828 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2829 argv
[1] = m
->generator_unit_path
;
2830 argv
[2] = m
->generator_unit_path_early
;
2831 argv
[3] = m
->generator_unit_path_late
;
2834 RUN_WITH_UMASK(0022)
2835 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2838 trim_generator_dir(m
, &m
->generator_unit_path
);
2839 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2840 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2844 static void remove_generator_dir(Manager
*m
, char **generator
) {
2851 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2852 (void) rm_rf(*generator
, REMOVE_ROOT
);
2854 *generator
= mfree(*generator
);
2857 static void manager_undo_generators(Manager
*m
) {
2860 remove_generator_dir(m
, &m
->generator_unit_path
);
2861 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2862 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2865 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2866 char **a
= NULL
, **b
= NULL
, **l
;
2871 if (!strv_isempty(minus
)) {
2872 a
= strv_env_delete(l
, 1, minus
);
2879 if (!strv_isempty(plus
)) {
2880 b
= strv_env_merge(2, l
, plus
);
2889 if (m
->environment
!= l
)
2890 strv_free(m
->environment
);
2897 manager_clean_environment(m
);
2898 strv_sort(m
->environment
);
2903 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2908 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
2909 if (!default_rlimit
[i
])
2912 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
2920 void manager_recheck_journal(Manager
*m
) {
2925 if (m
->running_as
!= MANAGER_SYSTEM
)
2928 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
2929 if (u
&& SOCKET(u
)->state
!= SOCKET_RUNNING
) {
2930 log_close_journal();
2934 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
2935 if (u
&& SERVICE(u
)->state
!= SERVICE_RUNNING
) {
2936 log_close_journal();
2940 /* Hmm, OK, so the socket is fully up and the service is up
2941 * too, then let's make use of the thing. */
2945 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
2947 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
2949 if (m
->running_as
!= MANAGER_SYSTEM
)
2952 m
->show_status
= mode
;
2955 touch("/run/systemd/show-status");
2957 unlink("/run/systemd/show-status");
2960 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
2963 if (m
->running_as
!= MANAGER_SYSTEM
)
2966 if (m
->no_console_output
)
2969 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
2972 /* If we cannot find out the status properly, just proceed. */
2973 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
2976 if (m
->show_status
> 0)
2982 void manager_set_first_boot(Manager
*m
, bool b
) {
2985 if (m
->running_as
!= MANAGER_SYSTEM
)
2988 if (m
->first_boot
!= (int) b
) {
2990 (void) touch("/run/systemd/first-boot");
2992 (void) unlink("/run/systemd/first-boot");
2998 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
3001 /* If m is NULL, assume we're after shutdown and let the messages through. */
3003 if (m
&& !manager_get_show_status(m
, type
))
3006 /* XXX We should totally drop the check for ephemeral here
3007 * and thus effectively make 'Type=idle' pointless. */
3008 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3011 va_start(ap
, format
);
3012 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3016 int manager_get_unit_by_path(Manager
*m
, const char *path
, const char *suffix
, Unit
**_found
) {
3017 _cleanup_free_
char *p
= NULL
;
3026 r
= unit_name_from_path(path
, suffix
, &p
);
3030 found
= manager_get_unit(m
, p
);
3040 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3041 char p
[strlen(path
)+1];
3047 path_kill_slashes(p
);
3049 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3052 const char *manager_get_runtime_prefix(Manager
*m
) {
3055 return m
->running_as
== MANAGER_SYSTEM
?
3057 getenv("XDG_RUNTIME_DIR");
3060 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
3065 assert(u
->manager
== m
);
3067 size
= set_size(m
->failed_units
);
3070 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
3074 if (set_put(m
->failed_units
, u
) < 0)
3077 (void) set_remove(m
->failed_units
, u
);
3079 if (set_size(m
->failed_units
) != size
)
3080 bus_manager_send_change_signal(m
);
3085 ManagerState
manager_state(Manager
*m
) {
3090 /* Did we ever finish booting? If not then we are still starting up */
3091 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3093 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3094 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3095 return MANAGER_INITIALIZING
;
3097 return MANAGER_STARTING
;
3100 /* Is the special shutdown target queued? If so, we are in shutdown state */
3101 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3102 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))
3103 return MANAGER_STOPPING
;
3105 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3106 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3107 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3108 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3109 return MANAGER_MAINTENANCE
;
3111 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3112 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3113 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3114 return MANAGER_MAINTENANCE
;
3116 /* Are there any failed units? If so, we are in degraded mode */
3117 if (set_size(m
->failed_units
) > 0)
3118 return MANAGER_DEGRADED
;
3120 return MANAGER_RUNNING
;
3123 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3124 [MANAGER_INITIALIZING
] = "initializing",
3125 [MANAGER_STARTING
] = "starting",
3126 [MANAGER_RUNNING
] = "running",
3127 [MANAGER_DEGRADED
] = "degraded",
3128 [MANAGER_MAINTENANCE
] = "maintenance",
3129 [MANAGER_STOPPING
] = "stopping",
3132 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);