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"
49 #include "ratelimit.h"
50 #include "locale-setup.h"
51 #include "unit-name.h"
54 #include "path-lookup.h"
56 #include "exit-status.h"
59 #include "path-util.h"
61 #include "boot-timestamps.h"
63 #include "bus-common-errors.h"
64 #include "bus-error.h"
66 #include "bus-kernel.h"
67 #include "time-util.h"
68 #include "process-util.h"
69 #include "terminal-util.h"
70 #include "signal-util.h"
72 #include "dbus-unit.h"
74 #include "dbus-manager.h"
76 #include "transaction.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_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-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_ON
);
129 if (pos
> 0 && pos
<= width
) {
130 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED_ON
);
134 p
= stpcpy(p
, ANSI_HIGHLIGHT_OFF
);
137 p
= stpcpy(p
, ANSI_RED_ON
);
140 p
= mempset(p
, ' ', width
-1-pos
);
141 strcpy(p
, ANSI_HIGHLIGHT_OFF
);
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_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
254 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
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 safe_close_pair(m
->idle_pipe
);
321 safe_close_pair(m
->idle_pipe
+ 2);
324 static int manager_setup_time_change(Manager
*m
) {
327 /* We only care for the cancellation event, hence we set the
328 * timeout to the latest possible value. */
329 struct itimerspec its
= {
330 .it_value
.tv_sec
= TIME_T_MAX
,
334 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX
));
339 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
340 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
342 m
->time_change_fd
= timerfd_create(CLOCK_REALTIME
, TFD_NONBLOCK
|TFD_CLOEXEC
);
343 if (m
->time_change_fd
< 0)
344 return log_error_errno(errno
, "Failed to create timerfd: %m");
346 if (timerfd_settime(m
->time_change_fd
, TFD_TIMER_ABSTIME
|TFD_TIMER_CANCEL_ON_SET
, &its
, NULL
) < 0) {
347 log_debug_errno(errno
, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
348 m
->time_change_fd
= safe_close(m
->time_change_fd
);
352 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
354 return log_error_errno(r
, "Failed to create time change event source: %m");
356 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
358 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
363 static int enable_special_signals(Manager
*m
) {
364 _cleanup_close_
int fd
= -1;
368 /* Enable that we get SIGINT on control-alt-del. In containers
369 * this will fail with EPERM (older) or EINVAL (newer), so
371 if (reboot(RB_DISABLE_CAD
) < 0 && errno
!= EPERM
&& errno
!= EINVAL
)
372 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
374 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
376 /* Support systems without virtual console */
378 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
380 /* Enable that we get SIGWINCH on kbrequest */
381 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
382 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
388 static int manager_setup_signals(Manager
*m
) {
389 struct sigaction sa
= {
390 .sa_handler
= SIG_DFL
,
391 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
398 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
400 /* We make liberal use of realtime signals here. On
401 * Linux/glibc we have 30 of them (with the exception of Linux
402 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
405 assert_se(sigemptyset(&mask
) == 0);
406 sigset_add_many(&mask
,
407 SIGCHLD
, /* Child died */
408 SIGTERM
, /* Reexecute daemon */
409 SIGHUP
, /* Reload configuration */
410 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
411 SIGUSR2
, /* systemd: dump status */
412 SIGINT
, /* Kernel sends us this on control-alt-del */
413 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
414 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
416 SIGRTMIN
+0, /* systemd: start default.target */
417 SIGRTMIN
+1, /* systemd: isolate rescue.target */
418 SIGRTMIN
+2, /* systemd: isolate emergency.target */
419 SIGRTMIN
+3, /* systemd: start halt.target */
420 SIGRTMIN
+4, /* systemd: start poweroff.target */
421 SIGRTMIN
+5, /* systemd: start reboot.target */
422 SIGRTMIN
+6, /* systemd: start kexec.target */
424 /* ... space for more special targets ... */
426 SIGRTMIN
+13, /* systemd: Immediate halt */
427 SIGRTMIN
+14, /* systemd: Immediate poweroff */
428 SIGRTMIN
+15, /* systemd: Immediate reboot */
429 SIGRTMIN
+16, /* systemd: Immediate kexec */
431 /* ... space for more immediate system state changes ... */
433 SIGRTMIN
+20, /* systemd: enable status messages */
434 SIGRTMIN
+21, /* systemd: disable status messages */
435 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
436 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
437 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
439 /* .. one free signal here ... */
441 #if !defined(__hppa64__) && !defined(__hppa__)
442 /* Apparently Linux on hppa has fewer RT
443 * signals (SIGRTMAX is SIGRTMIN+25 there),
444 * hence let's not try to make use of them
445 * here. Since these commands are accessible
446 * by different means and only really a safety
447 * net, the missing functionality on hppa
448 * shouldn't matter. */
450 SIGRTMIN
+26, /* systemd: set log target to journal-or-kmsg */
451 SIGRTMIN
+27, /* systemd: set log target to console */
452 SIGRTMIN
+28, /* systemd: set log target to kmsg */
453 SIGRTMIN
+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
455 /* ... one free signal here SIGRTMIN+30 ... */
458 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
460 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
461 if (m
->signal_fd
< 0)
464 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
468 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
470 /* Process signals a bit earlier than the rest of things, but
471 * later than notify_fd processing, so that the notify
472 * processing can still figure out to which process/service a
473 * message belongs, before we reap the process. */
474 r
= sd_event_source_set_priority(m
->signal_event_source
, -5);
478 if (m
->running_as
== MANAGER_SYSTEM
)
479 return enable_special_signals(m
);
484 static void manager_clean_environment(Manager
*m
) {
487 /* Let's remove some environment variables that we
488 * need ourselves to communicate with our clients */
501 static int manager_default_environment(Manager
*m
) {
504 if (m
->running_as
== MANAGER_SYSTEM
) {
505 /* The system manager always starts with a clean
506 * environment for its children. It does not import
507 * the kernel or the parents exported variables.
509 * The initial passed environ is untouched to keep
510 * /proc/self/environ valid; it is used for tagging
511 * the init process inside containers. */
512 m
->environment
= strv_new("PATH=" DEFAULT_PATH
,
515 /* Import locale variables LC_*= from configuration */
516 locale_setup(&m
->environment
);
518 /* The user manager passes its own environment
519 * along to its children. */
520 m
->environment
= strv_copy(environ
);
526 manager_clean_environment(m
);
527 strv_sort(m
->environment
);
533 int manager_new(ManagerRunningAs running_as
, bool test_run
, Manager
**_m
) {
535 static const char * const unit_log_fields
[_MANAGER_RUNNING_AS_MAX
] = {
536 [MANAGER_SYSTEM
] = "UNIT=",
537 [MANAGER_USER
] = "USER_UNIT=",
540 static const char * const unit_log_format_strings
[_MANAGER_RUNNING_AS_MAX
] = {
541 [MANAGER_SYSTEM
] = "UNIT=%s",
542 [MANAGER_USER
] = "USER_UNIT=%s",
549 assert(running_as
>= 0);
550 assert(running_as
< _MANAGER_RUNNING_AS_MAX
);
552 m
= new0(Manager
, 1);
557 if (running_as
== MANAGER_SYSTEM
&& detect_container(NULL
) <= 0)
558 boot_timestamps(&m
->userspace_timestamp
, &m
->firmware_timestamp
, &m
->loader_timestamp
);
561 m
->running_as
= running_as
;
562 m
->exit_code
= _MANAGER_EXIT_CODE_INVALID
;
563 m
->default_timer_accuracy_usec
= USEC_PER_MINUTE
;
565 /* Prepare log fields we can use for structured logging */
566 m
->unit_log_field
= unit_log_fields
[running_as
];
567 m
->unit_log_format_string
= unit_log_format_strings
[running_as
];
569 m
->idle_pipe
[0] = m
->idle_pipe
[1] = m
->idle_pipe
[2] = m
->idle_pipe
[3] = -1;
571 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;
572 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
574 m
->ask_password_inotify_fd
= -1;
575 m
->have_ask_password
= -EINVAL
; /* we don't know */
577 m
->test_run
= test_run
;
579 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
580 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
582 r
= manager_default_environment(m
);
586 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
590 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
594 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
598 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
602 r
= set_ensure_allocated(&m
->startup_units
, NULL
);
606 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
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 free(m
->notify_socket
);
675 m
->notify_socket
= NULL
;
676 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
678 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
680 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
682 if (m
->running_as
== MANAGER_SYSTEM
)
683 m
->notify_socket
= strdup("/run/systemd/notify");
687 e
= getenv("XDG_RUNTIME_DIR");
689 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
693 m
->notify_socket
= strappend(e
, "/systemd/notify");
695 if (!m
->notify_socket
)
698 (void) mkdir_parents_label(m
->notify_socket
, 0755);
699 (void) unlink(m
->notify_socket
);
701 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
702 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
704 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
706 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
708 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
713 log_debug("Using notification socket %s", m
->notify_socket
);
716 if (!m
->notify_event_source
) {
717 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
719 return log_error_errno(r
, "Failed to allocate notify event source: %m");
721 /* Process signals a bit earlier than SIGCHLD, so that we can
722 * still identify to which service an exit message belongs */
723 r
= sd_event_source_set_priority(m
->notify_event_source
, -7);
725 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
727 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
733 static int manager_setup_kdbus(Manager
*m
) {
735 _cleanup_free_
char *p
= NULL
;
739 if (m
->test_run
|| m
->kdbus_fd
>= 0)
741 if (!is_kdbus_available())
742 return -ESOCKTNOSUPPORT
;
744 if (m
->running_as
== MANAGER_SYSTEM
&& detect_container(NULL
) <= 0)
745 bus_kernel_fix_attach_mask();
747 m
->kdbus_fd
= bus_kernel_create_bus(
748 m
->running_as
== MANAGER_SYSTEM
? "system" : "user",
749 m
->running_as
== MANAGER_SYSTEM
, &p
);
752 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
754 log_debug("Successfully set up kdbus on %s", p
);
760 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
761 bool try_bus_connect
;
771 (m
->running_as
== MANAGER_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
773 /* Try to connect to the buses, if possible. */
774 return bus_init(m
, try_bus_connect
);
777 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
783 while ((u
= m
->cleanup_queue
)) {
784 assert(u
->in_cleanup_queue
);
794 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
795 GC_OFFSET_UNSURE
, /* No clue */
796 GC_OFFSET_GOOD
, /* We still need this unit */
797 GC_OFFSET_BAD
, /* We don't need this unit anymore */
801 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
808 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
809 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
810 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
813 if (u
->in_cleanup_queue
)
816 if (unit_check_gc(u
))
819 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
823 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
824 unit_gc_sweep(other
, gc_marker
);
826 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
829 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
836 /* We were unable to find anything out about this entry, so
837 * let's investigate it later */
838 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
839 unit_add_to_gc_queue(u
);
843 /* We definitely know that this one is not useful anymore, so
844 * let's mark it for deletion */
845 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
846 unit_add_to_cleanup_queue(u
);
850 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
853 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
860 /* log_debug("Running GC..."); */
862 m
->gc_marker
+= _GC_OFFSET_MAX
;
863 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
866 gc_marker
= m
->gc_marker
;
868 while ((u
= m
->gc_queue
)) {
869 assert(u
->in_gc_queue
);
871 unit_gc_sweep(u
, gc_marker
);
873 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
874 u
->in_gc_queue
= false;
878 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
879 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
881 log_unit_debug(u
, "Collecting.");
882 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
883 unit_add_to_cleanup_queue(u
);
887 m
->n_in_gc_queue
= 0;
892 static void manager_clear_jobs_and_units(Manager
*m
) {
897 while ((u
= hashmap_first(m
->units
)))
900 manager_dispatch_cleanup_queue(m
);
902 assert(!m
->load_queue
);
903 assert(!m
->run_queue
);
904 assert(!m
->dbus_unit_queue
);
905 assert(!m
->dbus_job_queue
);
906 assert(!m
->cleanup_queue
);
907 assert(!m
->gc_queue
);
909 assert(hashmap_isempty(m
->jobs
));
910 assert(hashmap_isempty(m
->units
));
913 m
->n_running_jobs
= 0;
916 Manager
* manager_free(Manager
*m
) {
923 manager_clear_jobs_and_units(m
);
925 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
926 if (unit_vtable
[c
]->shutdown
)
927 unit_vtable
[c
]->shutdown(m
);
929 /* If we reexecute ourselves, we keep the root cgroup
931 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
933 manager_undo_generators(m
);
937 hashmap_free(m
->units
);
938 hashmap_free(m
->jobs
);
939 hashmap_free(m
->watch_pids1
);
940 hashmap_free(m
->watch_pids2
);
941 hashmap_free(m
->watch_bus
);
943 set_free(m
->startup_units
);
944 set_free(m
->failed_units
);
946 sd_event_source_unref(m
->signal_event_source
);
947 sd_event_source_unref(m
->notify_event_source
);
948 sd_event_source_unref(m
->time_change_event_source
);
949 sd_event_source_unref(m
->jobs_in_progress_event_source
);
950 sd_event_source_unref(m
->idle_pipe_event_source
);
951 sd_event_source_unref(m
->run_queue_event_source
);
953 safe_close(m
->signal_fd
);
954 safe_close(m
->notify_fd
);
955 safe_close(m
->time_change_fd
);
956 safe_close(m
->kdbus_fd
);
958 manager_close_ask_password(m
);
960 manager_close_idle_pipe(m
);
963 sd_event_unref(m
->event
);
965 free(m
->notify_socket
);
967 lookup_paths_free(&m
->lookup_paths
);
968 strv_free(m
->environment
);
970 hashmap_free(m
->cgroup_unit
);
971 set_free_free(m
->unit_path_cache
);
973 free(m
->switch_root
);
974 free(m
->switch_root_init
);
976 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
979 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
980 hashmap_free(m
->units_requiring_mounts_for
);
986 int manager_enumerate(Manager
*m
) {
992 /* Let's ask every type to load all units from disk/kernel
993 * that it might know */
994 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
997 if (!unit_type_supported(c
)) {
998 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1002 if (!unit_vtable
[c
]->enumerate
)
1005 q
= unit_vtable
[c
]->enumerate(m
);
1010 manager_dispatch_load_queue(m
);
1014 static void manager_coldplug(Manager
*m
) {
1022 /* Then, let's set up their initial state. */
1023 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1025 /* ignore aliases */
1029 r
= unit_coldplug(u
);
1031 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1035 static void manager_build_unit_path_cache(Manager
*m
) {
1037 _cleanup_closedir_
DIR *d
= NULL
;
1042 set_free_free(m
->unit_path_cache
);
1044 m
->unit_path_cache
= set_new(&string_hash_ops
);
1045 if (!m
->unit_path_cache
) {
1046 log_error("Failed to allocate unit path cache.");
1050 /* This simply builds a list of files we know exist, so that
1051 * we don't always have to go to disk */
1053 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1058 if (errno
!= ENOENT
)
1059 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1063 while ((de
= readdir(d
))) {
1066 if (hidden_file(de
->d_name
))
1069 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1075 r
= set_consume(m
->unit_path_cache
, p
);
1087 log_error_errno(r
, "Failed to build unit path cache: %m");
1089 set_free_free(m
->unit_path_cache
);
1090 m
->unit_path_cache
= NULL
;
1094 static int manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1101 HASHMAP_FOREACH(u
, m
->units
, i
) {
1103 if (fdset_size(fds
) <= 0)
1106 if (UNIT_VTABLE(u
)->distribute_fds
) {
1107 r
= UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1116 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1121 dual_timestamp_get(&m
->generators_start_timestamp
);
1122 r
= manager_run_generators(m
);
1123 dual_timestamp_get(&m
->generators_finish_timestamp
);
1127 r
= lookup_paths_init(
1128 &m
->lookup_paths
, m
->running_as
, true,
1130 m
->generator_unit_path
,
1131 m
->generator_unit_path_early
,
1132 m
->generator_unit_path_late
);
1136 manager_build_unit_path_cache(m
);
1138 /* If we will deserialize make sure that during enumeration
1139 * this is already known, so we increase the counter here
1144 /* First, enumerate what we can from all config files */
1145 dual_timestamp_get(&m
->units_load_start_timestamp
);
1146 r
= manager_enumerate(m
);
1147 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1149 /* Second, deserialize if there is something to deserialize */
1151 r
= manager_deserialize(m
, serialization
, fds
);
1153 /* Any fds left? Find some unit which wants them. This is
1154 * useful to allow container managers to pass some file
1155 * descriptors to us pre-initialized. This enables
1156 * socket-based activation of entire containers. */
1157 if (fdset_size(fds
) > 0) {
1158 q
= manager_distribute_fds(m
, fds
);
1159 if (q
< 0 && r
== 0)
1163 /* We might have deserialized the notify fd, but if we didn't
1164 * then let's create the bus now */
1165 q
= manager_setup_notify(m
);
1166 if (q
< 0 && r
== 0)
1169 /* We might have deserialized the kdbus control fd, but if we
1170 * didn't, then let's create the bus now. */
1171 manager_setup_kdbus(m
);
1172 manager_connect_bus(m
, !!serialization
);
1173 bus_track_coldplug(m
, &m
->subscribed
, &m
->deserialized_subscribed
);
1175 /* Third, fire things up! */
1176 manager_coldplug(m
);
1178 if (serialization
) {
1179 assert(m
->n_reloading
> 0);
1182 /* Let's wait for the UnitNew/JobNew messages being
1183 * sent, before we notify that the reload is
1185 m
->send_reloading_done
= true;
1191 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1196 assert(type
< _JOB_TYPE_MAX
);
1198 assert(mode
< _JOB_MODE_MAX
);
1200 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1201 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1203 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1204 return sd_bus_error_setf(e
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1206 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1208 type
= job_type_collapse(type
, unit
);
1210 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1214 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, override
, false,
1215 mode
== JOB_IGNORE_DEPENDENCIES
|| mode
== JOB_IGNORE_REQUIREMENTS
,
1216 mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1220 if (mode
== JOB_ISOLATE
) {
1221 r
= transaction_add_isolate_jobs(tr
, m
);
1226 r
= transaction_activate(tr
, m
, mode
, e
);
1230 log_unit_debug(unit
,
1231 "Enqueued job %s/%s as %u", unit
->id
,
1232 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1235 *_ret
= tr
->anchor_job
;
1237 transaction_free(tr
);
1241 transaction_abort(tr
);
1242 transaction_free(tr
);
1246 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1251 assert(type
< _JOB_TYPE_MAX
);
1253 assert(mode
< _JOB_MODE_MAX
);
1255 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1259 return manager_add_job(m
, type
, unit
, mode
, override
, e
, _ret
);
1262 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1265 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1268 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1272 return hashmap_get(m
->units
, name
);
1275 unsigned manager_dispatch_load_queue(Manager
*m
) {
1281 /* Make sure we are not run recursively */
1282 if (m
->dispatching_load_queue
)
1285 m
->dispatching_load_queue
= true;
1287 /* Dispatches the load queue. Takes a unit from the queue and
1288 * tries to load its data until the queue is empty */
1290 while ((u
= m
->load_queue
)) {
1291 assert(u
->in_load_queue
);
1297 m
->dispatching_load_queue
= false;
1301 int manager_load_unit_prepare(
1313 assert(name
|| path
);
1315 /* This will prepare the unit for loading, but not actually
1316 * load anything from disk. */
1318 if (path
&& !is_path(path
))
1319 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1322 name
= basename(path
);
1324 t
= unit_name_to_type(name
);
1326 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1327 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1329 ret
= manager_get_unit(m
, name
);
1335 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1340 ret
->fragment_path
= strdup(path
);
1341 if (!ret
->fragment_path
) {
1347 r
= unit_add_name(ret
, name
);
1353 unit_add_to_load_queue(ret
);
1354 unit_add_to_dbus_queue(ret
);
1355 unit_add_to_gc_queue(ret
);
1363 int manager_load_unit(
1374 /* This will load the service information files, but not actually
1375 * start any services or anything. */
1377 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1381 manager_dispatch_load_queue(m
);
1384 *_ret
= unit_follow_merge(*_ret
);
1389 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1396 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1397 job_dump(j
, f
, prefix
);
1400 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1408 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1410 unit_dump(u
, f
, prefix
);
1413 void manager_clear_jobs(Manager
*m
) {
1418 while ((j
= hashmap_first(m
->jobs
)))
1419 /* No need to recurse. We're cancelling all jobs. */
1420 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1423 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1424 Manager
*m
= userdata
;
1430 while ((j
= m
->run_queue
)) {
1431 assert(j
->installed
);
1432 assert(j
->in_run_queue
);
1434 job_run_and_invalidate(j
);
1437 if (m
->n_running_jobs
> 0)
1438 manager_watch_jobs_in_progress(m
);
1440 if (m
->n_on_console
> 0)
1441 manager_watch_idle_pipe(m
);
1446 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1453 if (m
->dispatching_dbus_queue
)
1456 m
->dispatching_dbus_queue
= true;
1458 while ((u
= m
->dbus_unit_queue
)) {
1459 assert(u
->in_dbus_queue
);
1461 bus_unit_send_change_signal(u
);
1465 while ((j
= m
->dbus_job_queue
)) {
1466 assert(j
->in_dbus_queue
);
1468 bus_job_send_change_signal(j
);
1472 m
->dispatching_dbus_queue
= false;
1474 if (m
->send_reloading_done
) {
1475 m
->send_reloading_done
= false;
1477 bus_manager_send_reloading(m
, false);
1480 if (m
->queued_message
)
1481 bus_send_queued_message(m
);
1486 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, char *buf
, size_t n
, FDSet
*fds
) {
1487 _cleanup_strv_free_
char **tags
= NULL
;
1494 tags
= strv_split(buf
, "\n\r");
1500 if (UNIT_VTABLE(u
)->notify_message
)
1501 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1503 log_unit_debug(u
, "Got notification message for unit. Ignoring.");
1506 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1507 Manager
*m
= userdata
;
1512 assert(m
->notify_fd
== fd
);
1514 if (revents
!= EPOLLIN
) {
1515 log_warning("Got unexpected poll event for notify fd.");
1520 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1521 char buf
[NOTIFY_BUFFER_MAX
+1];
1522 struct iovec iovec
= {
1524 .iov_len
= sizeof(buf
)-1,
1527 struct cmsghdr cmsghdr
;
1528 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1529 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1531 struct msghdr msghdr
= {
1534 .msg_control
= &control
,
1535 .msg_controllen
= sizeof(control
),
1537 struct cmsghdr
*cmsg
;
1538 struct ucred
*ucred
= NULL
;
1541 int *fd_array
= NULL
;
1544 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1546 if (errno
== EAGAIN
|| errno
== EINTR
)
1552 for (cmsg
= CMSG_FIRSTHDR(&msghdr
); cmsg
; cmsg
= CMSG_NXTHDR(&msghdr
, cmsg
)) {
1553 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1555 fd_array
= (int*) CMSG_DATA(cmsg
);
1556 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1558 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1559 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1560 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1562 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1569 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1571 close_many(fd_array
, n_fds
);
1576 if (!ucred
|| ucred
->pid
<= 0) {
1577 log_warning("Received notify message without valid credentials. Ignoring.");
1581 if ((size_t) n
>= sizeof(buf
)) {
1582 log_warning("Received notify message exceeded maximum size. Ignoring.");
1588 /* Notify every unit that might be interested, but try
1589 * to avoid notifying the same one multiple times. */
1590 u1
= manager_get_unit_by_pid(m
, ucred
->pid
);
1592 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1596 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(ucred
->pid
));
1597 if (u2
&& u2
!= u1
) {
1598 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1602 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(ucred
->pid
));
1603 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1604 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1609 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1611 if (fdset_size(fds
) > 0)
1612 log_warning("Got auxiliary fds with notification message, closing all.");
1618 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, siginfo_t
*si
) {
1623 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1625 unit_unwatch_pid(u
, si
->si_pid
);
1626 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1629 static int manager_dispatch_sigchld(Manager
*m
) {
1635 /* First we call waitd() for a PID and do not reap the
1636 * zombie. That way we can still access /proc/$PID for
1637 * it while it is a zombie. */
1638 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1640 if (errno
== ECHILD
)
1652 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1653 _cleanup_free_
char *name
= NULL
;
1656 get_process_comm(si
.si_pid
, &name
);
1658 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1659 si
.si_pid
, strna(name
),
1660 sigchld_code_to_string(si
.si_code
),
1662 strna(si
.si_code
== CLD_EXITED
1663 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1664 : signal_to_string(si
.si_status
)));
1666 /* And now figure out the unit this belongs
1667 * to, it might be multiple... */
1668 u1
= manager_get_unit_by_pid(m
, si
.si_pid
);
1670 invoke_sigchld_event(m
, u1
, &si
);
1671 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(si
.si_pid
));
1673 invoke_sigchld_event(m
, u2
, &si
);
1674 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(si
.si_pid
));
1675 if (u3
&& u3
!= u2
&& u3
!= u1
)
1676 invoke_sigchld_event(m
, u3
, &si
);
1679 /* And now, we actually reap the zombie. */
1680 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1691 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1692 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1695 log_debug("Activating special unit %s", name
);
1697 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, true, &error
, NULL
);
1699 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1704 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1705 Manager
*m
= userdata
;
1707 struct signalfd_siginfo sfsi
;
1708 bool sigchld
= false;
1711 assert(m
->signal_fd
== fd
);
1713 if (revents
!= EPOLLIN
) {
1714 log_warning("Got unexpected events from signal file descriptor.");
1719 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1720 if (n
!= sizeof(sfsi
)) {
1725 if (errno
== EINTR
|| errno
== EAGAIN
)
1731 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1732 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== MANAGER_USER
)
1733 ? LOG_DEBUG
: LOG_INFO
,
1736 switch (sfsi
.ssi_signo
) {
1743 if (m
->running_as
== MANAGER_SYSTEM
) {
1744 /* This is for compatibility with the
1745 * original sysvinit */
1746 m
->exit_code
= MANAGER_REEXECUTE
;
1753 if (m
->running_as
== MANAGER_SYSTEM
) {
1755 /* If the user presses C-A-D more than
1756 * 7 times within 2s, we reboot
1759 if (ratelimit_test(&m
->ctrl_alt_del_ratelimit
))
1760 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1762 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1763 status_printf(NULL
, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1764 m
->exit_code
= MANAGER_REBOOT
;
1770 /* Run the exit target if there is one, if not, just exit. */
1771 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1772 m
->exit_code
= MANAGER_EXIT
;
1779 if (m
->running_as
== MANAGER_SYSTEM
)
1780 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1782 /* This is a nop on non-init */
1786 if (m
->running_as
== MANAGER_SYSTEM
)
1787 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1789 /* This is a nop on non-init */
1795 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1797 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1798 log_info("Trying to reconnect to bus...");
1802 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1803 log_info("Loading D-Bus service...");
1804 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1811 _cleanup_free_
char *dump
= NULL
;
1812 _cleanup_fclose_
FILE *f
= NULL
;
1815 f
= open_memstream(&dump
, &size
);
1817 log_warning("Failed to allocate memory stream.");
1821 manager_dump_units(m
, f
, "\t");
1822 manager_dump_jobs(m
, f
, "\t");
1825 log_warning("Failed to write status stream");
1830 log_warning("Failed to flush status stream");
1834 log_dump(LOG_INFO
, dump
);
1839 m
->exit_code
= MANAGER_RELOAD
;
1844 /* Starting SIGRTMIN+0 */
1845 static const char * const target_table
[] = {
1846 [0] = SPECIAL_DEFAULT_TARGET
,
1847 [1] = SPECIAL_RESCUE_TARGET
,
1848 [2] = SPECIAL_EMERGENCY_TARGET
,
1849 [3] = SPECIAL_HALT_TARGET
,
1850 [4] = SPECIAL_POWEROFF_TARGET
,
1851 [5] = SPECIAL_REBOOT_TARGET
,
1852 [6] = SPECIAL_KEXEC_TARGET
1855 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1856 static const ManagerExitCode code_table
[] = {
1858 [1] = MANAGER_POWEROFF
,
1859 [2] = MANAGER_REBOOT
,
1863 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1864 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1865 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1866 manager_start_target(m
, target_table
[idx
],
1867 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1871 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1872 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1873 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1877 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1880 log_debug("Enabling showing of status.");
1881 manager_set_show_status(m
, SHOW_STATUS_YES
);
1885 log_debug("Disabling showing of status.");
1886 manager_set_show_status(m
, SHOW_STATUS_NO
);
1890 log_set_max_level(LOG_DEBUG
);
1891 log_notice("Setting log level to debug.");
1895 log_set_max_level(LOG_INFO
);
1896 log_notice("Setting log level to info.");
1900 if (m
->running_as
== MANAGER_USER
) {
1901 m
->exit_code
= MANAGER_EXIT
;
1905 /* This is a nop on init */
1909 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1910 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1911 log_notice("Setting log target to journal-or-kmsg.");
1915 log_set_target(LOG_TARGET_CONSOLE
);
1916 log_notice("Setting log target to console.");
1920 log_set_target(LOG_TARGET_KMSG
);
1921 log_notice("Setting log target to kmsg.");
1925 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1932 manager_dispatch_sigchld(m
);
1937 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1938 Manager
*m
= userdata
;
1943 assert(m
->time_change_fd
== fd
);
1945 log_struct(LOG_INFO
,
1946 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1947 LOG_MESSAGE("Time has been changed"),
1950 /* Restart the watch */
1951 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1952 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1954 manager_setup_time_change(m
);
1956 HASHMAP_FOREACH(u
, m
->units
, i
)
1957 if (UNIT_VTABLE(u
)->time_change
)
1958 UNIT_VTABLE(u
)->time_change(u
);
1963 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1964 Manager
*m
= userdata
;
1967 assert(m
->idle_pipe
[2] == fd
);
1969 m
->no_console_output
= m
->n_on_console
> 0;
1971 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
1972 manager_close_idle_pipe(m
);
1977 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1978 Manager
*m
= userdata
;
1985 manager_print_jobs_in_progress(m
);
1987 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1988 r
= sd_event_source_set_time(source
, next
);
1992 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1995 int manager_loop(Manager
*m
) {
1998 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
2001 m
->exit_code
= MANAGER_OK
;
2003 /* Release the path cache */
2004 set_free_free(m
->unit_path_cache
);
2005 m
->unit_path_cache
= NULL
;
2007 manager_check_finished(m
);
2009 /* There might still be some zombies hanging around from
2010 * before we were exec()'ed. Let's reap them. */
2011 r
= manager_dispatch_sigchld(m
);
2015 while (m
->exit_code
== MANAGER_OK
) {
2018 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
)
2021 if (!ratelimit_test(&rl
)) {
2022 /* Yay, something is going seriously wrong, pause a little */
2023 log_warning("Looping too fast. Throttling execution a little.");
2028 if (manager_dispatch_load_queue(m
) > 0)
2031 if (manager_dispatch_gc_queue(m
) > 0)
2034 if (manager_dispatch_cleanup_queue(m
) > 0)
2037 if (manager_dispatch_cgroup_queue(m
) > 0)
2040 if (manager_dispatch_dbus_queue(m
) > 0)
2043 /* Sleep for half the watchdog time */
2044 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
) {
2045 wait_usec
= m
->runtime_watchdog
/ 2;
2049 wait_usec
= USEC_INFINITY
;
2051 r
= sd_event_run(m
->event
, wait_usec
);
2053 return log_error_errno(r
, "Failed to run event loop: %m");
2056 return m
->exit_code
;
2059 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2060 _cleanup_free_
char *n
= NULL
;
2068 r
= unit_name_from_dbus_path(s
, &n
);
2072 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2081 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2091 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2095 r
= safe_atou(p
, &id
);
2099 j
= manager_get_job(m
, id
);
2108 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2111 _cleanup_free_
char *p
= NULL
;
2115 audit_fd
= get_audit_fd();
2119 /* Don't generate audit events if the service was already
2120 * started and we're just deserializing */
2121 if (m
->n_reloading
> 0)
2124 if (m
->running_as
!= MANAGER_SYSTEM
)
2127 if (u
->type
!= UNIT_SERVICE
)
2130 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
2132 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
2136 msg
= strjoina("unit=", p
);
2137 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2139 /* We aren't allowed to send audit messages?
2140 * Then let's not retry again. */
2143 log_warning_errno(errno
, "Failed to send audit message: %m");
2149 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2150 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2153 _cleanup_free_
char *message
= NULL
;
2154 _cleanup_close_
int fd
= -1;
2156 /* Don't generate plymouth events if the service was already
2157 * started and we're just deserializing */
2158 if (m
->n_reloading
> 0)
2161 if (m
->running_as
!= MANAGER_SYSTEM
)
2164 if (detect_container(NULL
) > 0)
2167 if (u
->type
!= UNIT_SERVICE
&&
2168 u
->type
!= UNIT_MOUNT
&&
2169 u
->type
!= UNIT_SWAP
)
2172 /* We set SOCK_NONBLOCK here so that we rather drop the
2173 * message then wait for plymouth */
2174 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2176 log_error_errno(errno
, "socket() failed: %m");
2180 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2182 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2183 log_error_errno(errno
, "connect() failed: %m");
2187 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2193 if (write(fd
, message
, n
+ 1) != n
+ 1)
2194 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2195 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2198 void manager_dispatch_bus_name_owner_changed(
2201 const char* old_owner
,
2202 const char *new_owner
) {
2209 u
= hashmap_get(m
->watch_bus
, name
);
2213 UNIT_VTABLE(u
)->bus_name_owner_change(u
, name
, old_owner
, new_owner
);
2216 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2223 path
= m
->running_as
== MANAGER_SYSTEM
? "/run/systemd" : "/tmp";
2224 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2228 log_debug("Serializing state to %s", path
);
2230 f
= fdopen(fd
, "w+");
2241 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2254 fprintf(f
, "current-job-id=%"PRIu32
"\n", m
->current_job_id
);
2255 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2256 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2257 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2259 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2260 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2261 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2262 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2265 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2266 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2267 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2268 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2269 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2270 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2271 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2272 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2275 if (!switching_root
) {
2276 STRV_FOREACH(e
, m
->environment
) {
2277 _cleanup_free_
char *ce
;
2283 fprintf(f
, "env=%s\n", *e
);
2287 if (m
->notify_fd
>= 0) {
2290 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2294 fprintf(f
, "notify-fd=%i\n", copy
);
2295 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2298 if (m
->kdbus_fd
>= 0) {
2301 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2305 fprintf(f
, "kdbus-fd=%i\n", copy
);
2308 bus_track_serialize(m
->subscribed
, f
);
2312 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2320 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2327 assert(m
->n_reloading
> 0);
2333 r
= bus_fdset_add_all(m
, fds
);
2340 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2346 log_debug("Deserializing state...");
2351 char line
[LINE_MAX
], *l
;
2353 if (!fgets(line
, sizeof(line
), f
)) {
2368 if (startswith(l
, "current-job-id=")) {
2371 if (safe_atou32(l
+15, &id
) < 0)
2372 log_debug("Failed to parse current job id value %s", l
+15);
2374 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2376 } else if (startswith(l
, "n-installed-jobs=")) {
2379 if (safe_atou32(l
+17, &n
) < 0)
2380 log_debug("Failed to parse installed jobs counter %s", l
+17);
2382 m
->n_installed_jobs
+= n
;
2384 } else if (startswith(l
, "n-failed-jobs=")) {
2387 if (safe_atou32(l
+14, &n
) < 0)
2388 log_debug("Failed to parse failed jobs counter %s", l
+14);
2390 m
->n_failed_jobs
+= n
;
2392 } else if (startswith(l
, "taint-usr=")) {
2395 b
= parse_boolean(l
+10);
2397 log_debug("Failed to parse taint /usr flag %s", l
+10);
2399 m
->taint_usr
= m
->taint_usr
|| b
;
2401 } else if (startswith(l
, "firmware-timestamp="))
2402 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2403 else if (startswith(l
, "loader-timestamp="))
2404 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2405 else if (startswith(l
, "kernel-timestamp="))
2406 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2407 else if (startswith(l
, "initrd-timestamp="))
2408 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2409 else if (startswith(l
, "userspace-timestamp="))
2410 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2411 else if (startswith(l
, "finish-timestamp="))
2412 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2413 else if (startswith(l
, "security-start-timestamp="))
2414 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2415 else if (startswith(l
, "security-finish-timestamp="))
2416 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2417 else if (startswith(l
, "generators-start-timestamp="))
2418 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2419 else if (startswith(l
, "generators-finish-timestamp="))
2420 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2421 else if (startswith(l
, "units-load-start-timestamp="))
2422 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2423 else if (startswith(l
, "units-load-finish-timestamp="))
2424 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2425 else if (startswith(l
, "env=")) {
2426 _cleanup_free_
char *uce
= NULL
;
2429 r
= cunescape(l
+ 4, UNESCAPE_RELAX
, &uce
);
2433 e
= strv_env_set(m
->environment
, uce
);
2439 strv_free(m
->environment
);
2442 } else if (startswith(l
, "notify-fd=")) {
2445 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2446 log_debug("Failed to parse notify fd: %s", l
+ 10);
2448 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2449 safe_close(m
->notify_fd
);
2450 m
->notify_fd
= fdset_remove(fds
, fd
);
2453 } else if (startswith(l
, "notify-socket=")) {
2462 free(m
->notify_socket
);
2463 m
->notify_socket
= n
;
2465 } else if (startswith(l
, "kdbus-fd=")) {
2468 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2469 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2471 safe_close(m
->kdbus_fd
);
2472 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2478 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2480 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2482 log_debug("Unknown serialization item '%s'", l
);
2488 char name
[UNIT_NAME_MAX
+2];
2491 if (!fgets(name
, sizeof(name
), f
)) {
2502 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2506 r
= unit_deserialize(u
, f
, fds
);
2515 assert(m
->n_reloading
> 0);
2521 int manager_reload(Manager
*m
) {
2523 _cleanup_fclose_
FILE *f
= NULL
;
2524 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2528 r
= manager_open_serialization(m
, &f
);
2533 bus_manager_send_reloading(m
, true);
2541 r
= manager_serialize(m
, f
, fds
, false);
2547 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2552 /* From here on there is no way back. */
2553 manager_clear_jobs_and_units(m
);
2554 manager_undo_generators(m
);
2555 lookup_paths_free(&m
->lookup_paths
);
2557 /* Find new unit paths */
2558 q
= manager_run_generators(m
);
2559 if (q
< 0 && r
>= 0)
2562 q
= lookup_paths_init(
2563 &m
->lookup_paths
, m
->running_as
, true,
2565 m
->generator_unit_path
,
2566 m
->generator_unit_path_early
,
2567 m
->generator_unit_path_late
);
2568 if (q
< 0 && r
>= 0)
2571 manager_build_unit_path_cache(m
);
2573 /* First, enumerate what we can from all config files */
2574 q
= manager_enumerate(m
);
2575 if (q
< 0 && r
>= 0)
2578 /* Second, deserialize our stored data */
2579 q
= manager_deserialize(m
, f
, fds
);
2580 if (q
< 0 && r
>= 0)
2586 /* Re-register notify_fd as event source */
2587 q
= manager_setup_notify(m
);
2588 if (q
< 0 && r
>= 0)
2591 /* Third, fire things up! */
2592 manager_coldplug(m
);
2594 assert(m
->n_reloading
> 0);
2597 m
->send_reloading_done
= true;
2602 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2605 return m
->n_reloading
!= 0;
2608 void manager_reset_failed(Manager
*m
) {
2614 HASHMAP_FOREACH(u
, m
->units
, i
)
2615 unit_reset_failed(u
);
2618 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2624 /* Returns true if the unit is inactive or going down */
2625 u
= manager_get_unit(m
, name
);
2629 return unit_inactive_or_pending(u
);
2632 static void manager_notify_finished(Manager
*m
) {
2633 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2634 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2639 if (m
->running_as
== MANAGER_SYSTEM
&& detect_container(NULL
) <= 0) {
2641 /* Note that m->kernel_usec.monotonic is always at 0,
2642 * and m->firmware_usec.monotonic and
2643 * m->loader_usec.monotonic should be considered
2644 * negative values. */
2646 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2647 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2648 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2649 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2651 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2653 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2654 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2656 log_struct(LOG_INFO
,
2657 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2658 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2659 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2660 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2661 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2662 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2663 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2664 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2665 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2668 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2671 log_struct(LOG_INFO
,
2672 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2673 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2674 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2675 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2676 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2677 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2678 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2682 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2683 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2685 log_struct(LOG_INFO
,
2686 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2687 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2688 LOG_MESSAGE("Startup finished in %s.",
2689 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2693 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2697 "STATUS=Startup finished in %s.",
2698 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2701 void manager_check_finished(Manager
*m
) {
2707 if (m
->n_reloading
> 0)
2710 /* Verify that we are actually running currently. Initially
2711 * the exit code is set to invalid, and during operation it is
2712 * then set to MANAGER_OK */
2713 if (m
->exit_code
!= MANAGER_OK
)
2716 if (hashmap_size(m
->jobs
) > 0) {
2718 if (m
->jobs_in_progress_event_source
)
2719 /* Ignore any failure, this is only for feedback */
2720 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
2721 now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2726 manager_flip_auto_status(m
, false);
2728 /* Notify Type=idle units that we are done now */
2729 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
2730 manager_close_idle_pipe(m
);
2732 /* Turn off confirm spawn now */
2733 m
->confirm_spawn
= false;
2735 /* No need to update ask password status when we're going non-interactive */
2736 manager_close_ask_password(m
);
2738 /* This is no longer the first boot */
2739 manager_set_first_boot(m
, false);
2741 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2744 dual_timestamp_get(&m
->finish_timestamp
);
2746 manager_notify_finished(m
);
2748 SET_FOREACH(u
, m
->startup_units
, i
)
2750 cgroup_context_apply(unit_get_cgroup_context(u
), unit_get_cgroup_mask(u
), u
->cgroup_path
, manager_state(m
));
2753 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2764 if (m
->running_as
== MANAGER_SYSTEM
&& getpid() == 1) {
2765 /* systemd --system, not running --test */
2767 p
= strappend("/run/systemd/", name
);
2771 r
= mkdir_p_label(p
, 0755);
2773 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2777 } else if (m
->running_as
== MANAGER_USER
) {
2778 const char *s
= NULL
;
2780 s
= getenv("XDG_RUNTIME_DIR");
2783 p
= strjoin(s
, "/systemd/", name
, NULL
);
2787 r
= mkdir_p_label(p
, 0755);
2789 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2794 /* systemd --system --test */
2796 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2801 log_error_errno(errno
, "Failed to create generator directory %s: %m",
2812 static void trim_generator_dir(Manager
*m
, char **generator
) {
2819 if (rmdir(*generator
) >= 0) {
2827 static int manager_run_generators(Manager
*m
) {
2828 _cleanup_strv_free_
char **paths
= NULL
;
2829 const char *argv
[5];
2838 paths
= generator_paths(m
->running_as
);
2842 /* Optimize by skipping the whole process by not creating output directories
2843 * if no generators are found. */
2844 STRV_FOREACH(path
, paths
) {
2845 r
= access(*path
, F_OK
);
2848 if (errno
!= ENOENT
)
2849 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2854 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2858 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2862 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2866 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2867 argv
[1] = m
->generator_unit_path
;
2868 argv
[2] = m
->generator_unit_path_early
;
2869 argv
[3] = m
->generator_unit_path_late
;
2872 RUN_WITH_UMASK(0022)
2873 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2876 trim_generator_dir(m
, &m
->generator_unit_path
);
2877 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2878 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2882 static void remove_generator_dir(Manager
*m
, char **generator
) {
2889 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2890 (void) rm_rf(*generator
, REMOVE_ROOT
);
2896 static void manager_undo_generators(Manager
*m
) {
2899 remove_generator_dir(m
, &m
->generator_unit_path
);
2900 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2901 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2904 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2905 char **a
= NULL
, **b
= NULL
, **l
;
2910 if (!strv_isempty(minus
)) {
2911 a
= strv_env_delete(l
, 1, minus
);
2918 if (!strv_isempty(plus
)) {
2919 b
= strv_env_merge(2, l
, plus
);
2928 if (m
->environment
!= l
)
2929 strv_free(m
->environment
);
2936 manager_clean_environment(m
);
2937 strv_sort(m
->environment
);
2942 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2947 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
2948 if (!default_rlimit
[i
])
2951 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
2959 void manager_recheck_journal(Manager
*m
) {
2964 if (m
->running_as
!= MANAGER_SYSTEM
)
2967 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
2968 if (u
&& SOCKET(u
)->state
!= SOCKET_RUNNING
) {
2969 log_close_journal();
2973 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
2974 if (u
&& SERVICE(u
)->state
!= SERVICE_RUNNING
) {
2975 log_close_journal();
2979 /* Hmm, OK, so the socket is fully up and the service is up
2980 * too, then let's make use of the thing. */
2984 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
2986 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
2988 if (m
->running_as
!= MANAGER_SYSTEM
)
2991 m
->show_status
= mode
;
2994 touch("/run/systemd/show-status");
2996 unlink("/run/systemd/show-status");
2999 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
3002 if (m
->running_as
!= MANAGER_SYSTEM
)
3005 if (m
->no_console_output
)
3008 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
3011 /* If we cannot find out the status properly, just proceed. */
3012 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
3015 if (m
->show_status
> 0)
3021 void manager_set_first_boot(Manager
*m
, bool b
) {
3024 if (m
->running_as
!= MANAGER_SYSTEM
)
3030 touch("/run/systemd/first-boot");
3032 unlink("/run/systemd/first-boot");
3035 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
3038 /* If m is NULL, assume we're after shutdown and let the messages through. */
3040 if (m
&& !manager_get_show_status(m
, type
))
3043 /* XXX We should totally drop the check for ephemeral here
3044 * and thus effectively make 'Type=idle' pointless. */
3045 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3048 va_start(ap
, format
);
3049 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3053 int manager_get_unit_by_path(Manager
*m
, const char *path
, const char *suffix
, Unit
**_found
) {
3054 _cleanup_free_
char *p
= NULL
;
3063 r
= unit_name_from_path(path
, suffix
, &p
);
3067 found
= manager_get_unit(m
, p
);
3077 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3078 char p
[strlen(path
)+1];
3084 path_kill_slashes(p
);
3086 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3089 const char *manager_get_runtime_prefix(Manager
*m
) {
3092 return m
->running_as
== MANAGER_SYSTEM
?
3094 getenv("XDG_RUNTIME_DIR");
3097 void manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
3101 assert(u
->manager
== m
);
3103 size
= set_size(m
->failed_units
);
3106 if (set_put(m
->failed_units
, u
) < 0)
3109 set_remove(m
->failed_units
, u
);
3111 if (set_size(m
->failed_units
) != size
)
3112 bus_manager_send_change_signal(m
);
3115 ManagerState
manager_state(Manager
*m
) {
3120 /* Did we ever finish booting? If not then we are still starting up */
3121 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3123 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3124 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3125 return MANAGER_INITIALIZING
;
3127 return MANAGER_STARTING
;
3130 /* Is the special shutdown target queued? If so, we are in shutdown state */
3131 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3132 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))
3133 return MANAGER_STOPPING
;
3135 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3136 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3137 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3138 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3139 return MANAGER_MAINTENANCE
;
3141 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3142 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3143 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3144 return MANAGER_MAINTENANCE
;
3146 /* Are there any failed units? If so, we are in degraded mode */
3147 if (set_size(m
->failed_units
) > 0)
3148 return MANAGER_DEGRADED
;
3150 return MANAGER_RUNNING
;
3153 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3154 [MANAGER_INITIALIZING
] = "initializing",
3155 [MANAGER_STARTING
] = "starting",
3156 [MANAGER_RUNNING
] = "running",
3157 [MANAGER_DEGRADED
] = "degraded",
3158 [MANAGER_MAINTENANCE
] = "maintenance",
3159 [MANAGER_STOPPING
] = "stopping",
3162 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);