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_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 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() <= 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
=
572 m
->dev_autofs_fd
= m
->private_listen_fd
= m
->kdbus_fd
= m
->utab_inotify_fd
=
573 m
->cgroup_inotify_fd
= -1;
574 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
576 m
->ask_password_inotify_fd
= -1;
577 m
->have_ask_password
= -EINVAL
; /* we don't know */
580 m
->test_run
= test_run
;
582 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
583 RATELIMIT_INIT(m
->ctrl_alt_del_ratelimit
, 2 * USEC_PER_SEC
, 7);
585 r
= manager_default_environment(m
);
589 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
593 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
597 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
601 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
605 r
= set_ensure_allocated(&m
->startup_units
, NULL
);
609 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
613 r
= sd_event_default(&m
->event
);
617 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
621 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
625 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
629 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
631 r
= manager_setup_signals(m
);
635 r
= manager_setup_cgroup(m
);
639 r
= manager_setup_time_change(m
);
643 m
->udev
= udev_new();
649 /* Note that we set up neither kdbus, nor the notify fd
650 * here. We do that after deserialization, since they might
651 * have gotten serialized across the reexec. */
653 m
->taint_usr
= dir_is_empty("/usr") > 0;
663 static int manager_setup_notify(Manager
*m
) {
669 if (m
->notify_fd
< 0) {
670 _cleanup_close_
int fd
= -1;
671 union sockaddr_union sa
= {
672 .sa
.sa_family
= AF_UNIX
,
674 static const int one
= 1;
676 /* First free all secondary fields */
677 m
->notify_socket
= mfree(m
->notify_socket
);
678 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
680 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
682 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
684 if (m
->running_as
== MANAGER_SYSTEM
)
685 m
->notify_socket
= strdup("/run/systemd/notify");
689 e
= getenv("XDG_RUNTIME_DIR");
691 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
695 m
->notify_socket
= strappend(e
, "/systemd/notify");
697 if (!m
->notify_socket
)
700 (void) mkdir_parents_label(m
->notify_socket
, 0755);
701 (void) unlink(m
->notify_socket
);
703 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
704 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
706 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
708 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
710 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
715 log_debug("Using notification socket %s", m
->notify_socket
);
718 if (!m
->notify_event_source
) {
719 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
721 return log_error_errno(r
, "Failed to allocate notify event source: %m");
723 /* Process signals a bit earlier than SIGCHLD, so that we can
724 * still identify to which service an exit message belongs */
725 r
= sd_event_source_set_priority(m
->notify_event_source
, -7);
727 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
729 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
735 static int manager_setup_kdbus(Manager
*m
) {
736 _cleanup_free_
char *p
= NULL
;
740 if (m
->test_run
|| m
->kdbus_fd
>= 0)
742 if (!is_kdbus_available())
743 return -ESOCKTNOSUPPORT
;
745 m
->kdbus_fd
= bus_kernel_create_bus(
746 m
->running_as
== MANAGER_SYSTEM
? "system" : "user",
747 m
->running_as
== MANAGER_SYSTEM
, &p
);
750 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
752 log_debug("Successfully set up kdbus on %s", p
);
757 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
758 bool try_bus_connect
;
768 (m
->running_as
== MANAGER_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
770 /* Try to connect to the buses, if possible. */
771 return bus_init(m
, try_bus_connect
);
774 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
780 while ((u
= m
->cleanup_queue
)) {
781 assert(u
->in_cleanup_queue
);
791 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
792 GC_OFFSET_UNSURE
, /* No clue */
793 GC_OFFSET_GOOD
, /* We still need this unit */
794 GC_OFFSET_BAD
, /* We don't need this unit anymore */
798 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
805 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
806 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
807 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
810 if (u
->in_cleanup_queue
)
813 if (unit_check_gc(u
))
816 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
820 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
821 unit_gc_sweep(other
, gc_marker
);
823 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
826 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
833 /* We were unable to find anything out about this entry, so
834 * let's investigate it later */
835 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
836 unit_add_to_gc_queue(u
);
840 /* We definitely know that this one is not useful anymore, so
841 * let's mark it for deletion */
842 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
843 unit_add_to_cleanup_queue(u
);
847 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
850 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
857 /* log_debug("Running GC..."); */
859 m
->gc_marker
+= _GC_OFFSET_MAX
;
860 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
863 gc_marker
= m
->gc_marker
;
865 while ((u
= m
->gc_queue
)) {
866 assert(u
->in_gc_queue
);
868 unit_gc_sweep(u
, gc_marker
);
870 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
871 u
->in_gc_queue
= false;
875 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
876 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
878 log_unit_debug(u
, "Collecting.");
879 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
880 unit_add_to_cleanup_queue(u
);
884 m
->n_in_gc_queue
= 0;
889 static void manager_clear_jobs_and_units(Manager
*m
) {
894 while ((u
= hashmap_first(m
->units
)))
897 manager_dispatch_cleanup_queue(m
);
899 assert(!m
->load_queue
);
900 assert(!m
->run_queue
);
901 assert(!m
->dbus_unit_queue
);
902 assert(!m
->dbus_job_queue
);
903 assert(!m
->cleanup_queue
);
904 assert(!m
->gc_queue
);
906 assert(hashmap_isempty(m
->jobs
));
907 assert(hashmap_isempty(m
->units
));
910 m
->n_running_jobs
= 0;
913 Manager
* manager_free(Manager
*m
) {
920 manager_clear_jobs_and_units(m
);
922 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
923 if (unit_vtable
[c
]->shutdown
)
924 unit_vtable
[c
]->shutdown(m
);
926 /* If we reexecute ourselves, we keep the root cgroup
928 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
930 manager_undo_generators(m
);
934 hashmap_free(m
->units
);
935 hashmap_free(m
->jobs
);
936 hashmap_free(m
->watch_pids1
);
937 hashmap_free(m
->watch_pids2
);
938 hashmap_free(m
->watch_bus
);
940 set_free(m
->startup_units
);
941 set_free(m
->failed_units
);
943 sd_event_source_unref(m
->signal_event_source
);
944 sd_event_source_unref(m
->notify_event_source
);
945 sd_event_source_unref(m
->time_change_event_source
);
946 sd_event_source_unref(m
->jobs_in_progress_event_source
);
947 sd_event_source_unref(m
->idle_pipe_event_source
);
948 sd_event_source_unref(m
->run_queue_event_source
);
950 safe_close(m
->signal_fd
);
951 safe_close(m
->notify_fd
);
952 safe_close(m
->time_change_fd
);
953 safe_close(m
->kdbus_fd
);
955 manager_close_ask_password(m
);
957 manager_close_idle_pipe(m
);
960 sd_event_unref(m
->event
);
962 free(m
->notify_socket
);
964 lookup_paths_free(&m
->lookup_paths
);
965 strv_free(m
->environment
);
967 hashmap_free(m
->cgroup_unit
);
968 set_free_free(m
->unit_path_cache
);
970 free(m
->switch_root
);
971 free(m
->switch_root_init
);
973 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
976 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
977 hashmap_free(m
->units_requiring_mounts_for
);
983 int manager_enumerate(Manager
*m
) {
989 /* Let's ask every type to load all units from disk/kernel
990 * that it might know */
991 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
994 if (!unit_type_supported(c
)) {
995 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
999 if (!unit_vtable
[c
]->enumerate
)
1002 q
= unit_vtable
[c
]->enumerate(m
);
1007 manager_dispatch_load_queue(m
);
1011 static void manager_coldplug(Manager
*m
) {
1019 /* Then, let's set up their initial state. */
1020 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1022 /* ignore aliases */
1026 r
= unit_coldplug(u
);
1028 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1032 static void manager_build_unit_path_cache(Manager
*m
) {
1034 _cleanup_closedir_
DIR *d
= NULL
;
1039 set_free_free(m
->unit_path_cache
);
1041 m
->unit_path_cache
= set_new(&string_hash_ops
);
1042 if (!m
->unit_path_cache
) {
1043 log_error("Failed to allocate unit path cache.");
1047 /* This simply builds a list of files we know exist, so that
1048 * we don't always have to go to disk */
1050 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1055 if (errno
!= ENOENT
)
1056 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1060 while ((de
= readdir(d
))) {
1063 if (hidden_file(de
->d_name
))
1066 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1072 r
= set_consume(m
->unit_path_cache
, p
);
1084 log_error_errno(r
, "Failed to build unit path cache: %m");
1086 set_free_free(m
->unit_path_cache
);
1087 m
->unit_path_cache
= NULL
;
1091 static int manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1098 HASHMAP_FOREACH(u
, m
->units
, i
) {
1100 if (fdset_size(fds
) <= 0)
1103 if (UNIT_VTABLE(u
)->distribute_fds
) {
1104 r
= UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1113 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1118 dual_timestamp_get(&m
->generators_start_timestamp
);
1119 r
= manager_run_generators(m
);
1120 dual_timestamp_get(&m
->generators_finish_timestamp
);
1124 r
= lookup_paths_init(
1125 &m
->lookup_paths
, m
->running_as
, true,
1127 m
->generator_unit_path
,
1128 m
->generator_unit_path_early
,
1129 m
->generator_unit_path_late
);
1133 manager_build_unit_path_cache(m
);
1135 /* If we will deserialize make sure that during enumeration
1136 * this is already known, so we increase the counter here
1141 /* First, enumerate what we can from all config files */
1142 dual_timestamp_get(&m
->units_load_start_timestamp
);
1143 r
= manager_enumerate(m
);
1144 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1146 /* Second, deserialize if there is something to deserialize */
1148 r
= manager_deserialize(m
, serialization
, fds
);
1150 /* Any fds left? Find some unit which wants them. This is
1151 * useful to allow container managers to pass some file
1152 * descriptors to us pre-initialized. This enables
1153 * socket-based activation of entire containers. */
1154 if (fdset_size(fds
) > 0) {
1155 q
= manager_distribute_fds(m
, fds
);
1156 if (q
< 0 && r
== 0)
1160 /* We might have deserialized the notify fd, but if we didn't
1161 * then let's create the bus now */
1162 q
= manager_setup_notify(m
);
1163 if (q
< 0 && r
== 0)
1166 /* We might have deserialized the kdbus control fd, but if we
1167 * didn't, then let's create the bus now. */
1168 manager_setup_kdbus(m
);
1169 manager_connect_bus(m
, !!serialization
);
1170 bus_track_coldplug(m
, &m
->subscribed
, &m
->deserialized_subscribed
);
1172 /* Third, fire things up! */
1173 manager_coldplug(m
);
1175 if (serialization
) {
1176 assert(m
->n_reloading
> 0);
1179 /* Let's wait for the UnitNew/JobNew messages being
1180 * sent, before we notify that the reload is
1182 m
->send_reloading_done
= true;
1188 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1193 assert(type
< _JOB_TYPE_MAX
);
1195 assert(mode
< _JOB_MODE_MAX
);
1197 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1198 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1200 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1201 return sd_bus_error_setf(e
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1203 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1205 type
= job_type_collapse(type
, unit
);
1207 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1211 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, override
, false,
1212 mode
== JOB_IGNORE_DEPENDENCIES
|| mode
== JOB_IGNORE_REQUIREMENTS
,
1213 mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1217 if (mode
== JOB_ISOLATE
) {
1218 r
= transaction_add_isolate_jobs(tr
, m
);
1223 r
= transaction_activate(tr
, m
, mode
, e
);
1227 log_unit_debug(unit
,
1228 "Enqueued job %s/%s as %u", unit
->id
,
1229 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1232 *_ret
= tr
->anchor_job
;
1234 transaction_free(tr
);
1238 transaction_abort(tr
);
1239 transaction_free(tr
);
1243 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1248 assert(type
< _JOB_TYPE_MAX
);
1250 assert(mode
< _JOB_MODE_MAX
);
1252 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1256 return manager_add_job(m
, type
, unit
, mode
, override
, e
, _ret
);
1259 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1262 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1265 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1269 return hashmap_get(m
->units
, name
);
1272 unsigned manager_dispatch_load_queue(Manager
*m
) {
1278 /* Make sure we are not run recursively */
1279 if (m
->dispatching_load_queue
)
1282 m
->dispatching_load_queue
= true;
1284 /* Dispatches the load queue. Takes a unit from the queue and
1285 * tries to load its data until the queue is empty */
1287 while ((u
= m
->load_queue
)) {
1288 assert(u
->in_load_queue
);
1294 m
->dispatching_load_queue
= false;
1298 int manager_load_unit_prepare(
1310 assert(name
|| path
);
1312 /* This will prepare the unit for loading, but not actually
1313 * load anything from disk. */
1315 if (path
&& !is_path(path
))
1316 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1319 name
= basename(path
);
1321 t
= unit_name_to_type(name
);
1323 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1324 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1326 ret
= manager_get_unit(m
, name
);
1332 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1337 ret
->fragment_path
= strdup(path
);
1338 if (!ret
->fragment_path
) {
1344 r
= unit_add_name(ret
, name
);
1350 unit_add_to_load_queue(ret
);
1351 unit_add_to_dbus_queue(ret
);
1352 unit_add_to_gc_queue(ret
);
1360 int manager_load_unit(
1371 /* This will load the service information files, but not actually
1372 * start any services or anything. */
1374 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1378 manager_dispatch_load_queue(m
);
1381 *_ret
= unit_follow_merge(*_ret
);
1386 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1393 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1394 job_dump(j
, f
, prefix
);
1397 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1405 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1407 unit_dump(u
, f
, prefix
);
1410 void manager_clear_jobs(Manager
*m
) {
1415 while ((j
= hashmap_first(m
->jobs
)))
1416 /* No need to recurse. We're cancelling all jobs. */
1417 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1420 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1421 Manager
*m
= userdata
;
1427 while ((j
= m
->run_queue
)) {
1428 assert(j
->installed
);
1429 assert(j
->in_run_queue
);
1431 job_run_and_invalidate(j
);
1434 if (m
->n_running_jobs
> 0)
1435 manager_watch_jobs_in_progress(m
);
1437 if (m
->n_on_console
> 0)
1438 manager_watch_idle_pipe(m
);
1443 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1450 if (m
->dispatching_dbus_queue
)
1453 m
->dispatching_dbus_queue
= true;
1455 while ((u
= m
->dbus_unit_queue
)) {
1456 assert(u
->in_dbus_queue
);
1458 bus_unit_send_change_signal(u
);
1462 while ((j
= m
->dbus_job_queue
)) {
1463 assert(j
->in_dbus_queue
);
1465 bus_job_send_change_signal(j
);
1469 m
->dispatching_dbus_queue
= false;
1471 if (m
->send_reloading_done
) {
1472 m
->send_reloading_done
= false;
1474 bus_manager_send_reloading(m
, false);
1477 if (m
->queued_message
)
1478 bus_send_queued_message(m
);
1483 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, char *buf
, size_t n
, FDSet
*fds
) {
1484 _cleanup_strv_free_
char **tags
= NULL
;
1491 tags
= strv_split(buf
, "\n\r");
1497 if (UNIT_VTABLE(u
)->notify_message
)
1498 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1500 log_unit_debug(u
, "Got notification message for unit. Ignoring.");
1503 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1504 Manager
*m
= userdata
;
1509 assert(m
->notify_fd
== fd
);
1511 if (revents
!= EPOLLIN
) {
1512 log_warning("Got unexpected poll event for notify fd.");
1517 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1518 char buf
[NOTIFY_BUFFER_MAX
+1];
1519 struct iovec iovec
= {
1521 .iov_len
= sizeof(buf
)-1,
1524 struct cmsghdr cmsghdr
;
1525 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1526 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1528 struct msghdr msghdr
= {
1531 .msg_control
= &control
,
1532 .msg_controllen
= sizeof(control
),
1534 struct cmsghdr
*cmsg
;
1535 struct ucred
*ucred
= NULL
;
1538 int *fd_array
= NULL
;
1541 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1543 if (errno
== EAGAIN
|| errno
== EINTR
)
1549 CMSG_FOREACH(cmsg
, &msghdr
) {
1550 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1552 fd_array
= (int*) CMSG_DATA(cmsg
);
1553 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1555 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1556 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1557 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1559 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1566 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1568 close_many(fd_array
, n_fds
);
1573 if (!ucred
|| ucred
->pid
<= 0) {
1574 log_warning("Received notify message without valid credentials. Ignoring.");
1578 if ((size_t) n
>= sizeof(buf
)) {
1579 log_warning("Received notify message exceeded maximum size. Ignoring.");
1585 /* Notify every unit that might be interested, but try
1586 * to avoid notifying the same one multiple times. */
1587 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
1589 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1593 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(ucred
->pid
));
1594 if (u2
&& u2
!= u1
) {
1595 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1599 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(ucred
->pid
));
1600 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1601 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1606 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1608 if (fdset_size(fds
) > 0)
1609 log_warning("Got auxiliary fds with notification message, closing all.");
1615 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, siginfo_t
*si
) {
1620 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1622 unit_unwatch_pid(u
, si
->si_pid
);
1623 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1626 static int manager_dispatch_sigchld(Manager
*m
) {
1632 /* First we call waitd() for a PID and do not reap the
1633 * zombie. That way we can still access /proc/$PID for
1634 * it while it is a zombie. */
1635 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1637 if (errno
== ECHILD
)
1649 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1650 _cleanup_free_
char *name
= NULL
;
1653 get_process_comm(si
.si_pid
, &name
);
1655 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1656 si
.si_pid
, strna(name
),
1657 sigchld_code_to_string(si
.si_code
),
1659 strna(si
.si_code
== CLD_EXITED
1660 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1661 : signal_to_string(si
.si_status
)));
1663 /* And now figure out the unit this belongs
1664 * to, it might be multiple... */
1665 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
1667 invoke_sigchld_event(m
, u1
, &si
);
1668 u2
= hashmap_get(m
->watch_pids1
, PID_TO_PTR(si
.si_pid
));
1670 invoke_sigchld_event(m
, u2
, &si
);
1671 u3
= hashmap_get(m
->watch_pids2
, PID_TO_PTR(si
.si_pid
));
1672 if (u3
&& u3
!= u2
&& u3
!= u1
)
1673 invoke_sigchld_event(m
, u3
, &si
);
1676 /* And now, we actually reap the zombie. */
1677 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1688 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1689 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1692 log_debug("Activating special unit %s", name
);
1694 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, true, &error
, NULL
);
1696 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1701 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1702 Manager
*m
= userdata
;
1704 struct signalfd_siginfo sfsi
;
1705 bool sigchld
= false;
1709 assert(m
->signal_fd
== fd
);
1711 if (revents
!= EPOLLIN
) {
1712 log_warning("Got unexpected events from signal file descriptor.");
1717 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1718 if (n
!= sizeof(sfsi
)) {
1723 if (errno
== EINTR
|| errno
== EAGAIN
)
1729 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1730 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== MANAGER_USER
)
1731 ? LOG_DEBUG
: LOG_INFO
,
1734 switch (sfsi
.ssi_signo
) {
1741 if (m
->running_as
== MANAGER_SYSTEM
) {
1742 /* This is for compatibility with the
1743 * original sysvinit */
1744 m
->exit_code
= MANAGER_REEXECUTE
;
1751 if (m
->running_as
== MANAGER_SYSTEM
) {
1753 /* If the user presses C-A-D more than
1754 * 7 times within 2s, we reboot
1757 if (ratelimit_test(&m
->ctrl_alt_del_ratelimit
))
1758 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1760 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1761 status_printf(NULL
, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1762 m
->exit_code
= MANAGER_REBOOT
;
1768 /* Run the exit target if there is one, if not, just exit. */
1769 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1770 m
->exit_code
= MANAGER_EXIT
;
1777 if (m
->running_as
== MANAGER_SYSTEM
)
1778 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1780 /* This is a nop on non-init */
1784 if (m
->running_as
== MANAGER_SYSTEM
)
1785 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1787 /* This is a nop on non-init */
1793 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1795 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1796 log_info("Trying to reconnect to bus...");
1800 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1801 log_info("Loading D-Bus service...");
1802 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1809 _cleanup_free_
char *dump
= NULL
;
1810 _cleanup_fclose_
FILE *f
= NULL
;
1813 f
= open_memstream(&dump
, &size
);
1815 log_warning_errno(errno
, "Failed to allocate memory stream: %m");
1819 manager_dump_units(m
, f
, "\t");
1820 manager_dump_jobs(m
, f
, "\t");
1822 r
= fflush_and_check(f
);
1824 log_warning_errno(r
, "Failed to write status stream: %m");
1828 log_dump(LOG_INFO
, dump
);
1833 m
->exit_code
= MANAGER_RELOAD
;
1838 /* Starting SIGRTMIN+0 */
1839 static const char * const target_table
[] = {
1840 [0] = SPECIAL_DEFAULT_TARGET
,
1841 [1] = SPECIAL_RESCUE_TARGET
,
1842 [2] = SPECIAL_EMERGENCY_TARGET
,
1843 [3] = SPECIAL_HALT_TARGET
,
1844 [4] = SPECIAL_POWEROFF_TARGET
,
1845 [5] = SPECIAL_REBOOT_TARGET
,
1846 [6] = SPECIAL_KEXEC_TARGET
1849 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1850 static const ManagerExitCode code_table
[] = {
1852 [1] = MANAGER_POWEROFF
,
1853 [2] = MANAGER_REBOOT
,
1857 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1858 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1859 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1860 manager_start_target(m
, target_table
[idx
],
1861 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1865 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1866 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1867 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1871 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1874 log_debug("Enabling showing of status.");
1875 manager_set_show_status(m
, SHOW_STATUS_YES
);
1879 log_debug("Disabling showing of status.");
1880 manager_set_show_status(m
, SHOW_STATUS_NO
);
1884 log_set_max_level(LOG_DEBUG
);
1885 log_notice("Setting log level to debug.");
1889 log_set_max_level(LOG_INFO
);
1890 log_notice("Setting log level to info.");
1894 if (m
->running_as
== MANAGER_USER
) {
1895 m
->exit_code
= MANAGER_EXIT
;
1899 /* This is a nop on init */
1903 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1904 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1905 log_notice("Setting log target to journal-or-kmsg.");
1909 log_set_target(LOG_TARGET_CONSOLE
);
1910 log_notice("Setting log target to console.");
1914 log_set_target(LOG_TARGET_KMSG
);
1915 log_notice("Setting log target to kmsg.");
1919 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1926 manager_dispatch_sigchld(m
);
1931 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1932 Manager
*m
= userdata
;
1937 assert(m
->time_change_fd
== fd
);
1939 log_struct(LOG_INFO
,
1940 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1941 LOG_MESSAGE("Time has been changed"),
1944 /* Restart the watch */
1945 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1946 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1948 manager_setup_time_change(m
);
1950 HASHMAP_FOREACH(u
, m
->units
, i
)
1951 if (UNIT_VTABLE(u
)->time_change
)
1952 UNIT_VTABLE(u
)->time_change(u
);
1957 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1958 Manager
*m
= userdata
;
1961 assert(m
->idle_pipe
[2] == fd
);
1963 m
->no_console_output
= m
->n_on_console
> 0;
1965 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
1966 manager_close_idle_pipe(m
);
1971 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1972 Manager
*m
= userdata
;
1979 manager_print_jobs_in_progress(m
);
1981 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1982 r
= sd_event_source_set_time(source
, next
);
1986 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1989 int manager_loop(Manager
*m
) {
1992 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
1995 m
->exit_code
= MANAGER_OK
;
1997 /* Release the path cache */
1998 set_free_free(m
->unit_path_cache
);
1999 m
->unit_path_cache
= NULL
;
2001 manager_check_finished(m
);
2003 /* There might still be some zombies hanging around from
2004 * before we were exec()'ed. Let's reap them. */
2005 r
= manager_dispatch_sigchld(m
);
2009 while (m
->exit_code
== MANAGER_OK
) {
2012 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
)
2015 if (!ratelimit_test(&rl
)) {
2016 /* Yay, something is going seriously wrong, pause a little */
2017 log_warning("Looping too fast. Throttling execution a little.");
2022 if (manager_dispatch_load_queue(m
) > 0)
2025 if (manager_dispatch_gc_queue(m
) > 0)
2028 if (manager_dispatch_cleanup_queue(m
) > 0)
2031 if (manager_dispatch_cgroup_queue(m
) > 0)
2034 if (manager_dispatch_dbus_queue(m
) > 0)
2037 /* Sleep for half the watchdog time */
2038 if (m
->runtime_watchdog
> 0 && m
->running_as
== MANAGER_SYSTEM
) {
2039 wait_usec
= m
->runtime_watchdog
/ 2;
2043 wait_usec
= USEC_INFINITY
;
2045 r
= sd_event_run(m
->event
, wait_usec
);
2047 return log_error_errno(r
, "Failed to run event loop: %m");
2050 return m
->exit_code
;
2053 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2054 _cleanup_free_
char *n
= NULL
;
2062 r
= unit_name_from_dbus_path(s
, &n
);
2066 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2075 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2085 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2089 r
= safe_atou(p
, &id
);
2093 j
= manager_get_job(m
, id
);
2102 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2105 _cleanup_free_
char *p
= NULL
;
2109 audit_fd
= get_audit_fd();
2113 /* Don't generate audit events if the service was already
2114 * started and we're just deserializing */
2115 if (m
->n_reloading
> 0)
2118 if (m
->running_as
!= MANAGER_SYSTEM
)
2121 if (u
->type
!= UNIT_SERVICE
)
2124 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
2126 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
2130 msg
= strjoina("unit=", p
);
2131 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2133 /* We aren't allowed to send audit messages?
2134 * Then let's not retry again. */
2137 log_warning_errno(errno
, "Failed to send audit message: %m");
2143 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2144 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2147 _cleanup_free_
char *message
= NULL
;
2148 _cleanup_close_
int fd
= -1;
2150 /* Don't generate plymouth events if the service was already
2151 * started and we're just deserializing */
2152 if (m
->n_reloading
> 0)
2155 if (m
->running_as
!= MANAGER_SYSTEM
)
2158 if (detect_container() > 0)
2161 if (u
->type
!= UNIT_SERVICE
&&
2162 u
->type
!= UNIT_MOUNT
&&
2163 u
->type
!= UNIT_SWAP
)
2166 /* We set SOCK_NONBLOCK here so that we rather drop the
2167 * message then wait for plymouth */
2168 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2170 log_error_errno(errno
, "socket() failed: %m");
2174 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2176 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2177 log_error_errno(errno
, "connect() failed: %m");
2181 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2187 if (write(fd
, message
, n
+ 1) != n
+ 1)
2188 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2189 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2192 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2199 path
= m
->running_as
== MANAGER_SYSTEM
? "/run/systemd" : "/tmp";
2200 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2204 log_debug("Serializing state to %s", path
);
2206 f
= fdopen(fd
, "w+");
2217 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2230 fprintf(f
, "current-job-id=%"PRIu32
"\n", m
->current_job_id
);
2231 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2232 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2233 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2235 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2236 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2237 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2238 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2241 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2242 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2243 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2244 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2245 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2246 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2247 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2248 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2251 if (!switching_root
) {
2252 STRV_FOREACH(e
, m
->environment
) {
2253 _cleanup_free_
char *ce
;
2259 fprintf(f
, "env=%s\n", *e
);
2263 if (m
->notify_fd
>= 0) {
2266 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2270 fprintf(f
, "notify-fd=%i\n", copy
);
2271 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2274 if (m
->kdbus_fd
>= 0) {
2277 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2281 fprintf(f
, "kdbus-fd=%i\n", copy
);
2284 bus_track_serialize(m
->subscribed
, f
);
2288 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2296 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2303 assert(m
->n_reloading
> 0);
2309 r
= bus_fdset_add_all(m
, fds
);
2316 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2322 log_debug("Deserializing state...");
2327 char line
[LINE_MAX
], *l
;
2329 if (!fgets(line
, sizeof(line
), f
)) {
2344 if (startswith(l
, "current-job-id=")) {
2347 if (safe_atou32(l
+15, &id
) < 0)
2348 log_debug("Failed to parse current job id value %s", l
+15);
2350 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2352 } else if (startswith(l
, "n-installed-jobs=")) {
2355 if (safe_atou32(l
+17, &n
) < 0)
2356 log_debug("Failed to parse installed jobs counter %s", l
+17);
2358 m
->n_installed_jobs
+= n
;
2360 } else if (startswith(l
, "n-failed-jobs=")) {
2363 if (safe_atou32(l
+14, &n
) < 0)
2364 log_debug("Failed to parse failed jobs counter %s", l
+14);
2366 m
->n_failed_jobs
+= n
;
2368 } else if (startswith(l
, "taint-usr=")) {
2371 b
= parse_boolean(l
+10);
2373 log_debug("Failed to parse taint /usr flag %s", l
+10);
2375 m
->taint_usr
= m
->taint_usr
|| b
;
2377 } else if (startswith(l
, "firmware-timestamp="))
2378 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2379 else if (startswith(l
, "loader-timestamp="))
2380 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2381 else if (startswith(l
, "kernel-timestamp="))
2382 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2383 else if (startswith(l
, "initrd-timestamp="))
2384 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2385 else if (startswith(l
, "userspace-timestamp="))
2386 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2387 else if (startswith(l
, "finish-timestamp="))
2388 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2389 else if (startswith(l
, "security-start-timestamp="))
2390 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2391 else if (startswith(l
, "security-finish-timestamp="))
2392 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2393 else if (startswith(l
, "generators-start-timestamp="))
2394 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2395 else if (startswith(l
, "generators-finish-timestamp="))
2396 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2397 else if (startswith(l
, "units-load-start-timestamp="))
2398 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2399 else if (startswith(l
, "units-load-finish-timestamp="))
2400 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2401 else if (startswith(l
, "env=")) {
2402 _cleanup_free_
char *uce
= NULL
;
2405 r
= cunescape(l
+ 4, UNESCAPE_RELAX
, &uce
);
2409 e
= strv_env_set(m
->environment
, uce
);
2415 strv_free(m
->environment
);
2418 } else if (startswith(l
, "notify-fd=")) {
2421 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2422 log_debug("Failed to parse notify fd: %s", l
+ 10);
2424 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2425 safe_close(m
->notify_fd
);
2426 m
->notify_fd
= fdset_remove(fds
, fd
);
2429 } else if (startswith(l
, "notify-socket=")) {
2438 free(m
->notify_socket
);
2439 m
->notify_socket
= n
;
2441 } else if (startswith(l
, "kdbus-fd=")) {
2444 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2445 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2447 safe_close(m
->kdbus_fd
);
2448 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2454 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2456 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2458 log_debug("Unknown serialization item '%s'", l
);
2464 char name
[UNIT_NAME_MAX
+2];
2467 if (!fgets(name
, sizeof(name
), f
)) {
2478 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2482 r
= unit_deserialize(u
, f
, fds
);
2491 assert(m
->n_reloading
> 0);
2497 int manager_reload(Manager
*m
) {
2499 _cleanup_fclose_
FILE *f
= NULL
;
2500 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2504 r
= manager_open_serialization(m
, &f
);
2509 bus_manager_send_reloading(m
, true);
2517 r
= manager_serialize(m
, f
, fds
, false);
2523 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2528 /* From here on there is no way back. */
2529 manager_clear_jobs_and_units(m
);
2530 manager_undo_generators(m
);
2531 lookup_paths_free(&m
->lookup_paths
);
2533 /* Find new unit paths */
2534 q
= manager_run_generators(m
);
2535 if (q
< 0 && r
>= 0)
2538 q
= lookup_paths_init(
2539 &m
->lookup_paths
, m
->running_as
, true,
2541 m
->generator_unit_path
,
2542 m
->generator_unit_path_early
,
2543 m
->generator_unit_path_late
);
2544 if (q
< 0 && r
>= 0)
2547 manager_build_unit_path_cache(m
);
2549 /* First, enumerate what we can from all config files */
2550 q
= manager_enumerate(m
);
2551 if (q
< 0 && r
>= 0)
2554 /* Second, deserialize our stored data */
2555 q
= manager_deserialize(m
, f
, fds
);
2556 if (q
< 0 && r
>= 0)
2562 /* Re-register notify_fd as event source */
2563 q
= manager_setup_notify(m
);
2564 if (q
< 0 && r
>= 0)
2567 /* Third, fire things up! */
2568 manager_coldplug(m
);
2570 assert(m
->n_reloading
> 0);
2573 m
->send_reloading_done
= true;
2578 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2581 return m
->n_reloading
!= 0;
2584 void manager_reset_failed(Manager
*m
) {
2590 HASHMAP_FOREACH(u
, m
->units
, i
)
2591 unit_reset_failed(u
);
2594 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2600 /* Returns true if the unit is inactive or going down */
2601 u
= manager_get_unit(m
, name
);
2605 return unit_inactive_or_pending(u
);
2608 static void manager_notify_finished(Manager
*m
) {
2609 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2610 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2615 if (m
->running_as
== MANAGER_SYSTEM
&& detect_container() <= 0) {
2617 /* Note that m->kernel_usec.monotonic is always at 0,
2618 * and m->firmware_usec.monotonic and
2619 * m->loader_usec.monotonic should be considered
2620 * negative values. */
2622 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2623 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2624 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2625 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2627 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2629 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2630 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2632 log_struct(LOG_INFO
,
2633 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2634 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2635 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2636 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2637 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2638 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2639 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2640 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2641 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2644 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2647 log_struct(LOG_INFO
,
2648 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2649 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2650 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2651 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2652 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2653 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2654 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2658 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2659 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2661 log_struct(LOG_INFO
,
2662 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2663 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2664 LOG_MESSAGE("Startup finished in %s.",
2665 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2669 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2673 "STATUS=Startup finished in %s.",
2674 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2677 void manager_check_finished(Manager
*m
) {
2683 if (m
->n_reloading
> 0)
2686 /* Verify that we are actually running currently. Initially
2687 * the exit code is set to invalid, and during operation it is
2688 * then set to MANAGER_OK */
2689 if (m
->exit_code
!= MANAGER_OK
)
2692 if (hashmap_size(m
->jobs
) > 0) {
2694 if (m
->jobs_in_progress_event_source
)
2695 /* Ignore any failure, this is only for feedback */
2696 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
2697 now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2702 manager_flip_auto_status(m
, false);
2704 /* Notify Type=idle units that we are done now */
2705 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
2706 manager_close_idle_pipe(m
);
2708 /* Turn off confirm spawn now */
2709 m
->confirm_spawn
= false;
2711 /* No need to update ask password status when we're going non-interactive */
2712 manager_close_ask_password(m
);
2714 /* This is no longer the first boot */
2715 manager_set_first_boot(m
, false);
2717 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2720 dual_timestamp_get(&m
->finish_timestamp
);
2722 manager_notify_finished(m
);
2724 SET_FOREACH(u
, m
->startup_units
, i
)
2726 cgroup_context_apply(unit_get_cgroup_context(u
), unit_get_own_mask(u
), u
->cgroup_path
, manager_state(m
));
2729 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2740 if (m
->running_as
== MANAGER_SYSTEM
&& getpid() == 1) {
2741 /* systemd --system, not running --test */
2743 p
= strappend("/run/systemd/", name
);
2747 r
= mkdir_p_label(p
, 0755);
2749 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2753 } else if (m
->running_as
== MANAGER_USER
) {
2754 const char *s
= NULL
;
2756 s
= getenv("XDG_RUNTIME_DIR");
2759 p
= strjoin(s
, "/systemd/", name
, NULL
);
2763 r
= mkdir_p_label(p
, 0755);
2765 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2770 /* systemd --system --test */
2772 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2777 log_error_errno(errno
, "Failed to create generator directory %s: %m",
2788 static void trim_generator_dir(Manager
*m
, char **generator
) {
2795 if (rmdir(*generator
) >= 0) {
2796 *generator
= mfree(*generator
);
2802 static int manager_run_generators(Manager
*m
) {
2803 _cleanup_strv_free_
char **paths
= NULL
;
2804 const char *argv
[5];
2813 paths
= generator_paths(m
->running_as
);
2817 /* Optimize by skipping the whole process by not creating output directories
2818 * if no generators are found. */
2819 STRV_FOREACH(path
, paths
) {
2820 r
= access(*path
, F_OK
);
2823 if (errno
!= ENOENT
)
2824 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2829 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2833 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2837 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2841 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2842 argv
[1] = m
->generator_unit_path
;
2843 argv
[2] = m
->generator_unit_path_early
;
2844 argv
[3] = m
->generator_unit_path_late
;
2847 RUN_WITH_UMASK(0022)
2848 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2851 trim_generator_dir(m
, &m
->generator_unit_path
);
2852 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2853 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2857 static void remove_generator_dir(Manager
*m
, char **generator
) {
2864 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2865 (void) rm_rf(*generator
, REMOVE_ROOT
);
2867 *generator
= mfree(*generator
);
2870 static void manager_undo_generators(Manager
*m
) {
2873 remove_generator_dir(m
, &m
->generator_unit_path
);
2874 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2875 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2878 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2879 char **a
= NULL
, **b
= NULL
, **l
;
2884 if (!strv_isempty(minus
)) {
2885 a
= strv_env_delete(l
, 1, minus
);
2892 if (!strv_isempty(plus
)) {
2893 b
= strv_env_merge(2, l
, plus
);
2902 if (m
->environment
!= l
)
2903 strv_free(m
->environment
);
2910 manager_clean_environment(m
);
2911 strv_sort(m
->environment
);
2916 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2921 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
2922 if (!default_rlimit
[i
])
2925 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
2933 void manager_recheck_journal(Manager
*m
) {
2938 if (m
->running_as
!= MANAGER_SYSTEM
)
2941 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
2942 if (u
&& SOCKET(u
)->state
!= SOCKET_RUNNING
) {
2943 log_close_journal();
2947 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
2948 if (u
&& SERVICE(u
)->state
!= SERVICE_RUNNING
) {
2949 log_close_journal();
2953 /* Hmm, OK, so the socket is fully up and the service is up
2954 * too, then let's make use of the thing. */
2958 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
2960 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
2962 if (m
->running_as
!= MANAGER_SYSTEM
)
2965 m
->show_status
= mode
;
2968 touch("/run/systemd/show-status");
2970 unlink("/run/systemd/show-status");
2973 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
2976 if (m
->running_as
!= MANAGER_SYSTEM
)
2979 if (m
->no_console_output
)
2982 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
2985 /* If we cannot find out the status properly, just proceed. */
2986 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
2989 if (m
->show_status
> 0)
2995 void manager_set_first_boot(Manager
*m
, bool b
) {
2998 if (m
->running_as
!= MANAGER_SYSTEM
)
3001 if (m
->first_boot
!= (int) b
) {
3003 (void) touch("/run/systemd/first-boot");
3005 (void) unlink("/run/systemd/first-boot");
3011 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
3014 /* If m is NULL, assume we're after shutdown and let the messages through. */
3016 if (m
&& !manager_get_show_status(m
, type
))
3019 /* XXX We should totally drop the check for ephemeral here
3020 * and thus effectively make 'Type=idle' pointless. */
3021 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3024 va_start(ap
, format
);
3025 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3029 int manager_get_unit_by_path(Manager
*m
, const char *path
, const char *suffix
, Unit
**_found
) {
3030 _cleanup_free_
char *p
= NULL
;
3039 r
= unit_name_from_path(path
, suffix
, &p
);
3043 found
= manager_get_unit(m
, p
);
3053 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3054 char p
[strlen(path
)+1];
3060 path_kill_slashes(p
);
3062 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3065 const char *manager_get_runtime_prefix(Manager
*m
) {
3068 return m
->running_as
== MANAGER_SYSTEM
?
3070 getenv("XDG_RUNTIME_DIR");
3073 void manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
3077 assert(u
->manager
== m
);
3079 size
= set_size(m
->failed_units
);
3082 if (set_put(m
->failed_units
, u
) < 0)
3085 set_remove(m
->failed_units
, u
);
3087 if (set_size(m
->failed_units
) != size
)
3088 bus_manager_send_change_signal(m
);
3091 ManagerState
manager_state(Manager
*m
) {
3096 /* Did we ever finish booting? If not then we are still starting up */
3097 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3099 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3100 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3101 return MANAGER_INITIALIZING
;
3103 return MANAGER_STARTING
;
3106 /* Is the special shutdown target queued? If so, we are in shutdown state */
3107 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3108 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))
3109 return MANAGER_STOPPING
;
3111 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3112 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3113 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3114 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3115 return MANAGER_MAINTENANCE
;
3117 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3118 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3119 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3120 return MANAGER_MAINTENANCE
;
3122 /* Are there any failed units? If so, we are in degraded mode */
3123 if (set_size(m
->failed_units
) > 0)
3124 return MANAGER_DEGRADED
;
3126 return MANAGER_RUNNING
;
3129 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3130 [MANAGER_INITIALIZING
] = "initializing",
3131 [MANAGER_STARTING
] = "starting",
3132 [MANAGER_RUNNING
] = "running",
3133 [MANAGER_DEGRADED
] = "degraded",
3134 [MANAGER_MAINTENANCE
] = "maintenance",
3135 [MANAGER_STOPPING
] = "stopping",
3138 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);