1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include <sys/inotify.h>
29 #include <sys/epoll.h>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
36 #include <sys/types.h>
39 #include <sys/timerfd.h>
45 #include "sd-daemon.h"
47 #include "sd-messages.h"
50 #include "transaction.h"
57 #include "ratelimit.h"
58 #include "locale-setup.h"
59 #include "mount-setup.h"
60 #include "unit-name.h"
62 #include "path-lookup.h"
64 #include "exit-status.h"
67 #include "cgroup-util.h"
68 #include "path-util.h"
70 #include "boot-timestamps.h"
72 #include "bus-common-errors.h"
73 #include "bus-error.h"
76 #include "dbus-unit.h"
78 #include "dbus-manager.h"
79 #include "bus-kernel.h"
80 #include "time-util.h"
82 /* Initial delay and the interval for printing status messages about running jobs */
83 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
84 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
85 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
87 #define NOTIFY_FD_MAX 768
88 #define NOTIFY_BUFFER_MAX PIPE_BUF
90 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
91 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
92 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
93 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
94 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
95 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
96 static int manager_run_generators(Manager
*m
);
97 static void manager_undo_generators(Manager
*m
);
99 static int manager_watch_jobs_in_progress(Manager
*m
) {
104 if (m
->jobs_in_progress_event_source
)
107 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
108 return sd_event_add_time(
110 &m
->jobs_in_progress_event_source
,
113 manager_dispatch_jobs_in_progress
, m
);
116 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
118 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
121 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
122 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
126 p
= mempset(p
, ' ', pos
-2);
127 p
= stpcpy(p
, ANSI_RED_ON
);
131 if (pos
> 0 && pos
<= width
) {
132 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED_ON
);
136 p
= stpcpy(p
, ANSI_HIGHLIGHT_OFF
);
139 p
= stpcpy(p
, ANSI_RED_ON
);
142 p
= mempset(p
, ' ', width
-1-pos
);
143 strcpy(p
, ANSI_HIGHLIGHT_OFF
);
147 void manager_flip_auto_status(Manager
*m
, bool enable
) {
151 if (m
->show_status
== SHOW_STATUS_AUTO
)
152 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
154 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
155 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
159 static void manager_print_jobs_in_progress(Manager
*m
) {
160 _cleanup_free_
char *job_of_n
= NULL
;
163 unsigned counter
= 0, print_nr
;
164 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
166 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
170 assert(m
->n_running_jobs
> 0);
172 manager_flip_auto_status(m
, true);
174 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
176 HASHMAP_FOREACH(j
, m
->jobs
, i
)
177 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
180 /* m->n_running_jobs must be consistent with the contents of m->jobs,
181 * so the above loop must have succeeded in finding j. */
182 assert(counter
== print_nr
+ 1);
185 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
187 cylon_pos
= 14 - cylon_pos
;
188 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
190 m
->jobs_in_progress_iteration
++;
192 if (m
->n_running_jobs
> 1)
193 asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
);
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 /* Queries might have been added meanwhile... */
288 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
289 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
292 return m
->have_ask_password
;
295 static int manager_watch_idle_pipe(Manager
*m
) {
300 if (m
->idle_pipe_event_source
)
303 if (m
->idle_pipe
[2] < 0)
306 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
308 return log_error_errno(r
, "Failed to watch idle pipe: %m");
313 static void manager_close_idle_pipe(Manager
*m
) {
316 safe_close_pair(m
->idle_pipe
);
317 safe_close_pair(m
->idle_pipe
+ 2);
320 static int manager_setup_time_change(Manager
*m
) {
323 /* We only care for the cancellation event, hence we set the
324 * timeout to the latest possible value. */
325 struct itimerspec its
= {
326 .it_value
.tv_sec
= TIME_T_MAX
,
330 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX
));
335 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
336 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
338 m
->time_change_fd
= timerfd_create(CLOCK_REALTIME
, TFD_NONBLOCK
|TFD_CLOEXEC
);
339 if (m
->time_change_fd
< 0)
340 return log_error_errno(errno
, "Failed to create timerfd: %m");
342 if (timerfd_settime(m
->time_change_fd
, TFD_TIMER_ABSTIME
|TFD_TIMER_CANCEL_ON_SET
, &its
, NULL
) < 0) {
343 log_debug_errno(errno
, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
344 m
->time_change_fd
= safe_close(m
->time_change_fd
);
348 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
350 return log_error_errno(r
, "Failed to create time change event source: %m");
352 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
357 static int enable_special_signals(Manager
*m
) {
358 _cleanup_close_
int fd
= -1;
362 /* Enable that we get SIGINT on control-alt-del. In containers
363 * this will fail with EPERM (older) or EINVAL (newer), so
365 if (reboot(RB_DISABLE_CAD
) < 0 && errno
!= EPERM
&& errno
!= EINVAL
)
366 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
368 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
370 /* Support systems without virtual console */
372 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
374 /* Enable that we get SIGWINCH on kbrequest */
375 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
376 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
382 static int manager_setup_signals(Manager
*m
) {
383 struct sigaction sa
= {
384 .sa_handler
= SIG_DFL
,
385 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
392 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
394 /* We make liberal use of realtime signals here. On
395 * Linux/glibc we have 30 of them (with the exception of Linux
396 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
399 assert_se(sigemptyset(&mask
) == 0);
400 sigset_add_many(&mask
,
401 SIGCHLD
, /* Child died */
402 SIGTERM
, /* Reexecute daemon */
403 SIGHUP
, /* Reload configuration */
404 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
405 SIGUSR2
, /* systemd: dump status */
406 SIGINT
, /* Kernel sends us this on control-alt-del */
407 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
408 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
410 SIGRTMIN
+0, /* systemd: start default.target */
411 SIGRTMIN
+1, /* systemd: isolate rescue.target */
412 SIGRTMIN
+2, /* systemd: isolate emergency.target */
413 SIGRTMIN
+3, /* systemd: start halt.target */
414 SIGRTMIN
+4, /* systemd: start poweroff.target */
415 SIGRTMIN
+5, /* systemd: start reboot.target */
416 SIGRTMIN
+6, /* systemd: start kexec.target */
418 /* ... space for more special targets ... */
420 SIGRTMIN
+13, /* systemd: Immediate halt */
421 SIGRTMIN
+14, /* systemd: Immediate poweroff */
422 SIGRTMIN
+15, /* systemd: Immediate reboot */
423 SIGRTMIN
+16, /* systemd: Immediate kexec */
425 /* ... space for more immediate system state changes ... */
427 SIGRTMIN
+20, /* systemd: enable status messages */
428 SIGRTMIN
+21, /* systemd: disable status messages */
429 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
430 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
431 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
433 /* .. one free signal here ... */
435 #if !defined(__hppa64__) && !defined(__hppa__)
436 /* Apparently Linux on hppa has fewer RT
437 * signals (SIGRTMAX is SIGRTMIN+25 there),
438 * hence let's not try to make use of them
439 * here. Since these commands are accessible
440 * by different means and only really a safety
441 * net, the missing functionality on hppa
442 * shouldn't matter. */
444 SIGRTMIN
+26, /* systemd: set log target to journal-or-kmsg */
445 SIGRTMIN
+27, /* systemd: set log target to console */
446 SIGRTMIN
+28, /* systemd: set log target to kmsg */
447 SIGRTMIN
+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
449 /* ... one free signal here SIGRTMIN+30 ... */
452 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
454 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
455 if (m
->signal_fd
< 0)
458 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
462 /* Process signals a bit earlier than the rest of things, but
463 * later than notify_fd processing, so that the notify
464 * processing can still figure out to which process/service a
465 * message belongs, before we reap the process. */
466 r
= sd_event_source_set_priority(m
->signal_event_source
, -5);
470 if (m
->running_as
== SYSTEMD_SYSTEM
)
471 return enable_special_signals(m
);
476 static void manager_clean_environment(Manager
*m
) {
479 /* Let's remove some environment variables that we
480 * need ourselves to communicate with our clients */
493 static int manager_default_environment(Manager
*m
) {
496 if (m
->running_as
== SYSTEMD_SYSTEM
) {
497 /* The system manager always starts with a clean
498 * environment for its children. It does not import
499 * the kernel or the parents exported variables.
501 * The initial passed environ is untouched to keep
502 * /proc/self/environ valid; it is used for tagging
503 * the init process inside containers. */
504 m
->environment
= strv_new("PATH=" DEFAULT_PATH
,
507 /* Import locale variables LC_*= from configuration */
508 locale_setup(&m
->environment
);
510 /* The user manager passes its own environment
511 * along to its children. */
512 m
->environment
= strv_copy(environ
);
518 manager_clean_environment(m
);
519 strv_sort(m
->environment
);
524 int manager_new(SystemdRunningAs running_as
, bool test_run
, Manager
**_m
) {
529 assert(running_as
>= 0);
530 assert(running_as
< _SYSTEMD_RUNNING_AS_MAX
);
532 m
= new0(Manager
, 1);
537 if (running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0)
538 boot_timestamps(&m
->userspace_timestamp
, &m
->firmware_timestamp
, &m
->loader_timestamp
);
541 m
->running_as
= running_as
;
542 m
->exit_code
= _MANAGER_EXIT_CODE_INVALID
;
543 m
->default_timer_accuracy_usec
= USEC_PER_MINUTE
;
545 m
->idle_pipe
[0] = m
->idle_pipe
[1] = m
->idle_pipe
[2] = m
->idle_pipe
[3] = -1;
547 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;
548 m
->current_job_id
= 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
550 m
->ask_password_inotify_fd
= -1;
551 m
->have_ask_password
= -EINVAL
; /* we don't know */
553 m
->test_run
= test_run
;
555 r
= manager_default_environment(m
);
559 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
563 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
567 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &string_hash_ops
);
571 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
575 r
= set_ensure_allocated(&m
->startup_units
, NULL
);
579 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
583 r
= sd_event_default(&m
->event
);
587 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
591 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
595 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
599 r
= manager_setup_signals(m
);
603 r
= manager_setup_cgroup(m
);
607 r
= manager_setup_time_change(m
);
611 m
->udev
= udev_new();
617 /* Note that we set up neither kdbus, nor the notify fd
618 * here. We do that after deserialization, since they might
619 * have gotten serialized across the reexec. */
621 m
->taint_usr
= dir_is_empty("/usr") > 0;
631 static int manager_setup_notify(Manager
*m
) {
637 if (m
->notify_fd
< 0) {
638 _cleanup_close_
int fd
= -1;
639 union sockaddr_union sa
= {
640 .sa
.sa_family
= AF_UNIX
,
642 static const int one
= 1;
644 /* First free all secondary fields */
645 free(m
->notify_socket
);
646 m
->notify_socket
= NULL
;
647 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
649 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
651 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
653 if (m
->running_as
== SYSTEMD_SYSTEM
)
654 m
->notify_socket
= strdup("/run/systemd/notify");
658 e
= getenv("XDG_RUNTIME_DIR");
660 log_error_errno(errno
, "XDG_RUNTIME_DIR is not set: %m");
664 m
->notify_socket
= strappend(e
, "/systemd/notify");
666 if (!m
->notify_socket
)
669 (void) mkdir_parents_label(m
->notify_socket
, 0755);
670 (void) unlink(m
->notify_socket
);
672 strncpy(sa
.un
.sun_path
, m
->notify_socket
, sizeof(sa
.un
.sun_path
)-1);
673 r
= bind(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + strlen(sa
.un
.sun_path
));
675 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
677 r
= setsockopt(fd
, SOL_SOCKET
, SO_PASSCRED
, &one
, sizeof(one
));
679 return log_error_errno(errno
, "SO_PASSCRED failed: %m");
684 log_debug("Using notification socket %s", m
->notify_socket
);
687 if (!m
->notify_event_source
) {
688 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
690 return log_error_errno(r
, "Failed to allocate notify event source: %m");
692 /* Process signals a bit earlier than SIGCHLD, so that we can
693 * still identify to which service an exit message belongs */
694 r
= sd_event_source_set_priority(m
->notify_event_source
, -7);
696 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
702 static int manager_setup_kdbus(Manager
*m
) {
704 _cleanup_free_
char *p
= NULL
;
708 if (m
->test_run
|| m
->kdbus_fd
>= 0)
711 if (m
->running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0)
712 bus_kernel_fix_attach_mask();
714 m
->kdbus_fd
= bus_kernel_create_bus(
715 m
->running_as
== SYSTEMD_SYSTEM
? "system" : "user",
716 m
->running_as
== SYSTEMD_SYSTEM
, &p
);
719 return log_debug_errno(m
->kdbus_fd
, "Failed to set up kdbus: %m");
721 log_debug("Successfully set up kdbus on %s", p
);
727 static int manager_connect_bus(Manager
*m
, bool reexecuting
) {
728 bool try_bus_connect
;
738 (m
->running_as
== SYSTEMD_USER
&& getenv("DBUS_SESSION_BUS_ADDRESS"));
740 /* Try to connect to the busses, if possible. */
741 return bus_init(m
, try_bus_connect
);
744 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
750 while ((u
= m
->cleanup_queue
)) {
751 assert(u
->in_cleanup_queue
);
761 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
762 GC_OFFSET_UNSURE
, /* No clue */
763 GC_OFFSET_GOOD
, /* We still need this unit */
764 GC_OFFSET_BAD
, /* We don't need this unit anymore */
768 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
775 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
||
776 u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
777 u
->gc_marker
== gc_marker
+ GC_OFFSET_IN_PATH
)
780 if (u
->in_cleanup_queue
)
783 if (unit_check_gc(u
))
786 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
790 SET_FOREACH(other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
791 unit_gc_sweep(other
, gc_marker
);
793 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
796 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
803 /* We were unable to find anything out about this entry, so
804 * let's investigate it later */
805 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
806 unit_add_to_gc_queue(u
);
810 /* We definitely know that this one is not useful anymore, so
811 * let's mark it for deletion */
812 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
813 unit_add_to_cleanup_queue(u
);
817 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
820 static unsigned manager_dispatch_gc_queue(Manager
*m
) {
827 /* log_debug("Running GC..."); */
829 m
->gc_marker
+= _GC_OFFSET_MAX
;
830 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
833 gc_marker
= m
->gc_marker
;
835 while ((u
= m
->gc_queue
)) {
836 assert(u
->in_gc_queue
);
838 unit_gc_sweep(u
, gc_marker
);
840 LIST_REMOVE(gc_queue
, m
->gc_queue
, u
);
841 u
->in_gc_queue
= false;
845 if (u
->gc_marker
== gc_marker
+ GC_OFFSET_BAD
||
846 u
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
) {
847 log_unit_debug(u
->id
, "Collecting %s", u
->id
);
848 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
849 unit_add_to_cleanup_queue(u
);
853 m
->n_in_gc_queue
= 0;
858 static void manager_clear_jobs_and_units(Manager
*m
) {
863 while ((u
= hashmap_first(m
->units
)))
866 manager_dispatch_cleanup_queue(m
);
868 assert(!m
->load_queue
);
869 assert(!m
->run_queue
);
870 assert(!m
->dbus_unit_queue
);
871 assert(!m
->dbus_job_queue
);
872 assert(!m
->cleanup_queue
);
873 assert(!m
->gc_queue
);
875 assert(hashmap_isempty(m
->jobs
));
876 assert(hashmap_isempty(m
->units
));
879 m
->n_running_jobs
= 0;
882 Manager
* manager_free(Manager
*m
) {
889 manager_clear_jobs_and_units(m
);
891 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
892 if (unit_vtable
[c
]->shutdown
)
893 unit_vtable
[c
]->shutdown(m
);
895 /* If we reexecute ourselves, we keep the root cgroup
897 manager_shutdown_cgroup(m
, m
->exit_code
!= MANAGER_REEXECUTE
);
899 manager_undo_generators(m
);
903 hashmap_free(m
->units
);
904 hashmap_free(m
->jobs
);
905 hashmap_free(m
->watch_pids1
);
906 hashmap_free(m
->watch_pids2
);
907 hashmap_free(m
->watch_bus
);
909 set_free(m
->startup_units
);
910 set_free(m
->failed_units
);
912 sd_event_source_unref(m
->signal_event_source
);
913 sd_event_source_unref(m
->notify_event_source
);
914 sd_event_source_unref(m
->time_change_event_source
);
915 sd_event_source_unref(m
->jobs_in_progress_event_source
);
916 sd_event_source_unref(m
->idle_pipe_event_source
);
917 sd_event_source_unref(m
->run_queue_event_source
);
919 safe_close(m
->signal_fd
);
920 safe_close(m
->notify_fd
);
921 safe_close(m
->time_change_fd
);
922 safe_close(m
->kdbus_fd
);
924 manager_close_ask_password(m
);
926 manager_close_idle_pipe(m
);
929 sd_event_unref(m
->event
);
931 free(m
->notify_socket
);
933 lookup_paths_free(&m
->lookup_paths
);
934 strv_free(m
->environment
);
936 hashmap_free(m
->cgroup_unit
);
937 set_free_free(m
->unit_path_cache
);
939 free(m
->switch_root
);
940 free(m
->switch_root_init
);
942 for (i
= 0; i
< _RLIMIT_MAX
; i
++)
945 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
946 hashmap_free(m
->units_requiring_mounts_for
);
952 int manager_enumerate(Manager
*m
) {
958 /* Let's ask every type to load all units from disk/kernel
959 * that it might know */
960 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
963 if (unit_vtable
[c
]->supported
&& !unit_vtable
[c
]->supported(m
)) {
964 log_info("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
968 if (!unit_vtable
[c
]->enumerate
)
971 q
= unit_vtable
[c
]->enumerate(m
);
976 manager_dispatch_load_queue(m
);
980 static int manager_coldplug(Manager
*m
) {
988 /* Then, let's set up their initial state. */
989 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
996 q
= unit_coldplug(u
);
1004 static void manager_build_unit_path_cache(Manager
*m
) {
1006 _cleanup_closedir_
DIR *d
= NULL
;
1011 set_free_free(m
->unit_path_cache
);
1013 m
->unit_path_cache
= set_new(&string_hash_ops
);
1014 if (!m
->unit_path_cache
) {
1015 log_error("Failed to allocate unit path cache.");
1019 /* This simply builds a list of files we know exist, so that
1020 * we don't always have to go to disk */
1022 STRV_FOREACH(i
, m
->lookup_paths
.unit_path
) {
1027 if (errno
!= ENOENT
)
1028 log_error_errno(errno
, "Failed to open directory %s: %m", *i
);
1032 while ((de
= readdir(d
))) {
1035 if (hidden_file(de
->d_name
))
1038 p
= strjoin(streq(*i
, "/") ? "" : *i
, "/", de
->d_name
, NULL
);
1044 r
= set_consume(m
->unit_path_cache
, p
);
1056 log_error_errno(r
, "Failed to build unit path cache: %m");
1058 set_free_free(m
->unit_path_cache
);
1059 m
->unit_path_cache
= NULL
;
1063 static int manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1070 HASHMAP_FOREACH(u
, m
->units
, i
) {
1072 if (fdset_size(fds
) <= 0)
1075 if (UNIT_VTABLE(u
)->distribute_fds
) {
1076 r
= UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1085 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1090 dual_timestamp_get(&m
->generators_start_timestamp
);
1091 r
= manager_run_generators(m
);
1092 dual_timestamp_get(&m
->generators_finish_timestamp
);
1096 r
= lookup_paths_init(
1097 &m
->lookup_paths
, m
->running_as
, true,
1099 m
->generator_unit_path
,
1100 m
->generator_unit_path_early
,
1101 m
->generator_unit_path_late
);
1105 manager_build_unit_path_cache(m
);
1107 /* If we will deserialize make sure that during enumeration
1108 * this is already known, so we increase the counter here
1113 /* First, enumerate what we can from all config files */
1114 dual_timestamp_get(&m
->units_load_start_timestamp
);
1115 r
= manager_enumerate(m
);
1116 dual_timestamp_get(&m
->units_load_finish_timestamp
);
1118 /* Second, deserialize if there is something to deserialize */
1120 r
= manager_deserialize(m
, serialization
, fds
);
1122 /* Any fds left? Find some unit which wants them. This is
1123 * useful to allow container managers to pass some file
1124 * descriptors to us pre-initialized. This enables
1125 * socket-based activation of entire containers. */
1126 if (fdset_size(fds
) > 0) {
1127 q
= manager_distribute_fds(m
, fds
);
1128 if (q
< 0 && r
== 0)
1132 /* We might have deserialized the notify fd, but if we didn't
1133 * then let's create the bus now */
1134 q
= manager_setup_notify(m
);
1135 if (q
< 0 && r
== 0)
1138 /* We might have deserialized the kdbus control fd, but if we
1139 * didn't, then let's create the bus now. */
1140 manager_setup_kdbus(m
);
1141 manager_connect_bus(m
, !!serialization
);
1142 bus_track_coldplug(m
, &m
->subscribed
, &m
->deserialized_subscribed
);
1144 /* Third, fire things up! */
1145 q
= manager_coldplug(m
);
1146 if (q
< 0 && r
== 0)
1149 if (serialization
) {
1150 assert(m
->n_reloading
> 0);
1153 /* Let's wait for the UnitNew/JobNew messages being
1154 * sent, before we notify that the reload is
1156 m
->send_reloading_done
= true;
1162 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1167 assert(type
< _JOB_TYPE_MAX
);
1169 assert(mode
< _JOB_MODE_MAX
);
1171 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1172 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1174 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1175 return sd_bus_error_setf(e
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1177 log_unit_debug(unit
->id
,
1178 "Trying to enqueue job %s/%s/%s", unit
->id
,
1179 job_type_to_string(type
), job_mode_to_string(mode
));
1181 job_type_collapse(&type
, unit
);
1183 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1187 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, override
, false,
1188 mode
== JOB_IGNORE_DEPENDENCIES
|| mode
== JOB_IGNORE_REQUIREMENTS
,
1189 mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1193 if (mode
== JOB_ISOLATE
) {
1194 r
= transaction_add_isolate_jobs(tr
, m
);
1199 r
= transaction_activate(tr
, m
, mode
, e
);
1203 log_unit_debug(unit
->id
,
1204 "Enqueued job %s/%s as %u", unit
->id
,
1205 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1208 *_ret
= tr
->anchor_job
;
1210 transaction_free(tr
);
1214 transaction_abort(tr
);
1215 transaction_free(tr
);
1219 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool override
, sd_bus_error
*e
, Job
**_ret
) {
1224 assert(type
< _JOB_TYPE_MAX
);
1226 assert(mode
< _JOB_MODE_MAX
);
1228 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1232 return manager_add_job(m
, type
, unit
, mode
, override
, e
, _ret
);
1235 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1238 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1241 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1245 return hashmap_get(m
->units
, name
);
1248 unsigned manager_dispatch_load_queue(Manager
*m
) {
1254 /* Make sure we are not run recursively */
1255 if (m
->dispatching_load_queue
)
1258 m
->dispatching_load_queue
= true;
1260 /* Dispatches the load queue. Takes a unit from the queue and
1261 * tries to load its data until the queue is empty */
1263 while ((u
= m
->load_queue
)) {
1264 assert(u
->in_load_queue
);
1270 m
->dispatching_load_queue
= false;
1274 int manager_load_unit_prepare(
1286 assert(name
|| path
);
1288 /* This will prepare the unit for loading, but not actually
1289 * load anything from disk. */
1291 if (path
&& !is_path(path
))
1292 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1295 name
= basename(path
);
1297 t
= unit_name_to_type(name
);
1299 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, TEMPLATE_INVALID
))
1300 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1302 ret
= manager_get_unit(m
, name
);
1308 ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1313 ret
->fragment_path
= strdup(path
);
1314 if (!ret
->fragment_path
) {
1320 r
= unit_add_name(ret
, name
);
1326 unit_add_to_load_queue(ret
);
1327 unit_add_to_dbus_queue(ret
);
1328 unit_add_to_gc_queue(ret
);
1336 int manager_load_unit(
1347 /* This will load the service information files, but not actually
1348 * start any services or anything. */
1350 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
1354 manager_dispatch_load_queue(m
);
1357 *_ret
= unit_follow_merge(*_ret
);
1362 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
1369 HASHMAP_FOREACH(j
, s
->jobs
, i
)
1370 job_dump(j
, f
, prefix
);
1373 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
1381 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
1383 unit_dump(u
, f
, prefix
);
1386 void manager_clear_jobs(Manager
*m
) {
1391 while ((j
= hashmap_first(m
->jobs
)))
1392 /* No need to recurse. We're cancelling all jobs. */
1393 job_finish_and_invalidate(j
, JOB_CANCELED
, false);
1396 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
1397 Manager
*m
= userdata
;
1403 while ((j
= m
->run_queue
)) {
1404 assert(j
->installed
);
1405 assert(j
->in_run_queue
);
1407 job_run_and_invalidate(j
);
1410 if (m
->n_running_jobs
> 0)
1411 manager_watch_jobs_in_progress(m
);
1413 if (m
->n_on_console
> 0)
1414 manager_watch_idle_pipe(m
);
1419 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
1426 if (m
->dispatching_dbus_queue
)
1429 m
->dispatching_dbus_queue
= true;
1431 while ((u
= m
->dbus_unit_queue
)) {
1432 assert(u
->in_dbus_queue
);
1434 bus_unit_send_change_signal(u
);
1438 while ((j
= m
->dbus_job_queue
)) {
1439 assert(j
->in_dbus_queue
);
1441 bus_job_send_change_signal(j
);
1445 m
->dispatching_dbus_queue
= false;
1447 if (m
->send_reloading_done
) {
1448 m
->send_reloading_done
= false;
1450 bus_manager_send_reloading(m
, false);
1453 if (m
->queued_message
)
1454 bus_send_queued_message(m
);
1459 static void manager_invoke_notify_message(Manager
*m
, Unit
*u
, pid_t pid
, char *buf
, size_t n
, FDSet
*fds
) {
1460 _cleanup_strv_free_
char **tags
= NULL
;
1467 tags
= strv_split(buf
, "\n\r");
1473 log_unit_debug(u
->id
, "Got notification message for unit %s", u
->id
);
1475 if (UNIT_VTABLE(u
)->notify_message
)
1476 UNIT_VTABLE(u
)->notify_message(u
, pid
, tags
, fds
);
1479 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1480 Manager
*m
= userdata
;
1485 assert(m
->notify_fd
== fd
);
1487 if (revents
!= EPOLLIN
) {
1488 log_warning("Got unexpected poll event for notify fd.");
1493 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1494 char buf
[NOTIFY_BUFFER_MAX
+1];
1495 struct iovec iovec
= {
1497 .iov_len
= sizeof(buf
)-1,
1500 struct cmsghdr cmsghdr
;
1501 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
1502 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
1504 struct msghdr msghdr
= {
1507 .msg_control
= &control
,
1508 .msg_controllen
= sizeof(control
),
1510 struct cmsghdr
*cmsg
;
1511 struct ucred
*ucred
= NULL
;
1514 int *fd_array
= NULL
;
1517 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1519 if (errno
== EAGAIN
|| errno
== EINTR
)
1527 for (cmsg
= CMSG_FIRSTHDR(&msghdr
); cmsg
; cmsg
= CMSG_NXTHDR(&msghdr
, cmsg
)) {
1528 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
1530 fd_array
= (int*) CMSG_DATA(cmsg
);
1531 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
1533 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
1534 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
1535 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
1537 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
1544 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
1546 close_many(fd_array
, n_fds
);
1551 if (!ucred
|| ucred
->pid
<= 0) {
1552 log_warning("Received notify message without valid credentials. Ignoring.");
1556 if ((size_t) n
>= sizeof(buf
)) {
1557 log_warning("Received notify message exceeded maximum size. Ignoring.");
1563 /* Notify every unit that might be interested, but try
1564 * to avoid notifying the same one multiple times. */
1565 u1
= manager_get_unit_by_pid(m
, ucred
->pid
);
1567 manager_invoke_notify_message(m
, u1
, ucred
->pid
, buf
, n
, fds
);
1571 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(ucred
->pid
));
1572 if (u2
&& u2
!= u1
) {
1573 manager_invoke_notify_message(m
, u2
, ucred
->pid
, buf
, n
, fds
);
1577 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(ucred
->pid
));
1578 if (u3
&& u3
!= u2
&& u3
!= u1
) {
1579 manager_invoke_notify_message(m
, u3
, ucred
->pid
, buf
, n
, fds
);
1584 log_warning("Cannot find unit for notify message of PID "PID_FMT
".", ucred
->pid
);
1586 if (fdset_size(fds
) > 0)
1587 log_warning("Got auxiliary fds with notification message, closing all.");
1593 static void invoke_sigchld_event(Manager
*m
, Unit
*u
, siginfo_t
*si
) {
1598 log_unit_debug(u
->id
, "Child "PID_FMT
" belongs to %s", si
->si_pid
, u
->id
);
1600 unit_unwatch_pid(u
, si
->si_pid
);
1601 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
1604 static int manager_dispatch_sigchld(Manager
*m
) {
1610 /* First we call waitd() for a PID and do not reap the
1611 * zombie. That way we can still access /proc/$PID for
1612 * it while it is a zombie. */
1613 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
1615 if (errno
== ECHILD
)
1627 if (si
.si_code
== CLD_EXITED
|| si
.si_code
== CLD_KILLED
|| si
.si_code
== CLD_DUMPED
) {
1628 _cleanup_free_
char *name
= NULL
;
1631 get_process_comm(si
.si_pid
, &name
);
1633 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
1634 si
.si_pid
, strna(name
),
1635 sigchld_code_to_string(si
.si_code
),
1637 strna(si
.si_code
== CLD_EXITED
1638 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
1639 : signal_to_string(si
.si_status
)));
1641 /* And now figure out the unit this belongs
1642 * to, it might be multiple... */
1643 u1
= manager_get_unit_by_pid(m
, si
.si_pid
);
1645 invoke_sigchld_event(m
, u1
, &si
);
1646 u2
= hashmap_get(m
->watch_pids1
, LONG_TO_PTR(si
.si_pid
));
1648 invoke_sigchld_event(m
, u2
, &si
);
1649 u3
= hashmap_get(m
->watch_pids2
, LONG_TO_PTR(si
.si_pid
));
1650 if (u3
&& u3
!= u2
&& u3
!= u1
)
1651 invoke_sigchld_event(m
, u3
, &si
);
1654 /* And now, we actually reap the zombie. */
1655 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
1666 static int manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
1667 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1670 log_unit_debug(name
, "Activating special unit %s", name
);
1672 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, true, &error
, NULL
);
1674 log_unit_error(name
, "Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
1679 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1680 Manager
*m
= userdata
;
1682 struct signalfd_siginfo sfsi
;
1683 bool sigchld
= false;
1686 assert(m
->signal_fd
== fd
);
1688 if (revents
!= EPOLLIN
) {
1689 log_warning("Got unexpected events from signal file descriptor.");
1694 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
1695 if (n
!= sizeof(sfsi
)) {
1700 if (errno
== EINTR
|| errno
== EAGAIN
)
1706 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
1707 (sfsi
.ssi_signo
== SIGTERM
&& m
->running_as
== SYSTEMD_USER
)
1708 ? LOG_DEBUG
: LOG_INFO
,
1711 switch (sfsi
.ssi_signo
) {
1718 if (m
->running_as
== SYSTEMD_SYSTEM
) {
1719 /* This is for compatibility with the
1720 * original sysvinit */
1721 m
->exit_code
= MANAGER_REEXECUTE
;
1728 if (m
->running_as
== SYSTEMD_SYSTEM
) {
1729 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
1733 /* Run the exit target if there is one, if not, just exit. */
1734 if (manager_start_target(m
, SPECIAL_EXIT_TARGET
, JOB_REPLACE
) < 0) {
1735 m
->exit_code
= MANAGER_EXIT
;
1742 if (m
->running_as
== SYSTEMD_SYSTEM
)
1743 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
1745 /* This is a nop on non-init */
1749 if (m
->running_as
== SYSTEMD_SYSTEM
)
1750 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
1752 /* This is a nop on non-init */
1758 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1760 if (!u
|| UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1761 log_info("Trying to reconnect to bus...");
1765 if (!u
|| !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
))) {
1766 log_info("Loading D-Bus service...");
1767 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
1774 _cleanup_free_
char *dump
= NULL
;
1775 _cleanup_fclose_
FILE *f
= NULL
;
1778 f
= open_memstream(&dump
, &size
);
1780 log_warning("Failed to allocate memory stream.");
1784 manager_dump_units(m
, f
, "\t");
1785 manager_dump_jobs(m
, f
, "\t");
1788 log_warning("Failed to write status stream");
1793 log_warning("Failed to flush status stream");
1797 log_dump(LOG_INFO
, dump
);
1802 m
->exit_code
= MANAGER_RELOAD
;
1807 /* Starting SIGRTMIN+0 */
1808 static const char * const target_table
[] = {
1809 [0] = SPECIAL_DEFAULT_TARGET
,
1810 [1] = SPECIAL_RESCUE_TARGET
,
1811 [2] = SPECIAL_EMERGENCY_TARGET
,
1812 [3] = SPECIAL_HALT_TARGET
,
1813 [4] = SPECIAL_POWEROFF_TARGET
,
1814 [5] = SPECIAL_REBOOT_TARGET
,
1815 [6] = SPECIAL_KEXEC_TARGET
1818 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1819 static const ManagerExitCode code_table
[] = {
1821 [1] = MANAGER_POWEROFF
,
1822 [2] = MANAGER_REBOOT
,
1826 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
1827 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
1828 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
1829 manager_start_target(m
, target_table
[idx
],
1830 (idx
== 1 || idx
== 2) ? JOB_ISOLATE
: JOB_REPLACE
);
1834 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
1835 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(code_table
)) {
1836 m
->exit_code
= code_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
1840 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
1843 log_debug("Enabling showing of status.");
1844 manager_set_show_status(m
, SHOW_STATUS_YES
);
1848 log_debug("Disabling showing of status.");
1849 manager_set_show_status(m
, SHOW_STATUS_NO
);
1853 log_set_max_level(LOG_DEBUG
);
1854 log_notice("Setting log level to debug.");
1858 log_set_max_level(LOG_INFO
);
1859 log_notice("Setting log level to info.");
1863 if (m
->running_as
== SYSTEMD_USER
) {
1864 m
->exit_code
= MANAGER_EXIT
;
1868 /* This is a nop on init */
1872 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1873 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1874 log_notice("Setting log target to journal-or-kmsg.");
1878 log_set_target(LOG_TARGET_CONSOLE
);
1879 log_notice("Setting log target to console.");
1883 log_set_target(LOG_TARGET_KMSG
);
1884 log_notice("Setting log target to kmsg.");
1888 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
1895 manager_dispatch_sigchld(m
);
1900 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1901 Manager
*m
= userdata
;
1906 assert(m
->time_change_fd
== fd
);
1908 log_struct(LOG_INFO
,
1909 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE
),
1910 LOG_MESSAGE("Time has been changed"),
1913 /* Restart the watch */
1914 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
1915 m
->time_change_fd
= safe_close(m
->time_change_fd
);
1917 manager_setup_time_change(m
);
1919 HASHMAP_FOREACH(u
, m
->units
, i
)
1920 if (UNIT_VTABLE(u
)->time_change
)
1921 UNIT_VTABLE(u
)->time_change(u
);
1926 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1927 Manager
*m
= userdata
;
1930 assert(m
->idle_pipe
[2] == fd
);
1932 m
->no_console_output
= m
->n_on_console
> 0;
1934 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
1935 manager_close_idle_pipe(m
);
1940 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1941 Manager
*m
= userdata
;
1948 manager_print_jobs_in_progress(m
);
1950 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
1951 r
= sd_event_source_set_time(source
, next
);
1955 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
1958 int manager_loop(Manager
*m
) {
1961 RATELIMIT_DEFINE(rl
, 1*USEC_PER_SEC
, 50000);
1964 m
->exit_code
= MANAGER_OK
;
1966 /* Release the path cache */
1967 set_free_free(m
->unit_path_cache
);
1968 m
->unit_path_cache
= NULL
;
1970 manager_check_finished(m
);
1972 /* There might still be some zombies hanging around from
1973 * before we were exec()'ed. Let's reap them. */
1974 r
= manager_dispatch_sigchld(m
);
1978 while (m
->exit_code
== MANAGER_OK
) {
1981 if (m
->runtime_watchdog
> 0 && m
->running_as
== SYSTEMD_SYSTEM
)
1984 if (!ratelimit_test(&rl
)) {
1985 /* Yay, something is going seriously wrong, pause a little */
1986 log_warning("Looping too fast. Throttling execution a little.");
1991 if (manager_dispatch_load_queue(m
) > 0)
1994 if (manager_dispatch_gc_queue(m
) > 0)
1997 if (manager_dispatch_cleanup_queue(m
) > 0)
2000 if (manager_dispatch_cgroup_queue(m
) > 0)
2003 if (manager_dispatch_dbus_queue(m
) > 0)
2006 /* Sleep for half the watchdog time */
2007 if (m
->runtime_watchdog
> 0 && m
->running_as
== SYSTEMD_SYSTEM
) {
2008 wait_usec
= m
->runtime_watchdog
/ 2;
2012 wait_usec
= USEC_INFINITY
;
2014 r
= sd_event_run(m
->event
, wait_usec
);
2016 return log_error_errno(r
, "Failed to run event loop: %m");
2019 return m
->exit_code
;
2022 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2023 _cleanup_free_
char *n
= NULL
;
2031 r
= unit_name_from_dbus_path(s
, &n
);
2035 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2044 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2054 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2058 r
= safe_atou(p
, &id
);
2062 j
= manager_get_job(m
, id
);
2071 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2074 _cleanup_free_
char *p
= NULL
;
2078 audit_fd
= get_audit_fd();
2082 /* Don't generate audit events if the service was already
2083 * started and we're just deserializing */
2084 if (m
->n_reloading
> 0)
2087 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2090 if (u
->type
!= UNIT_SERVICE
)
2093 p
= unit_name_to_prefix_and_instance(u
->id
);
2099 msg
= strappenda("unit=", p
);
2101 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
2103 /* We aren't allowed to send audit messages?
2104 * Then let's not retry again. */
2107 log_warning_errno(errno
, "Failed to send audit message: %m");
2113 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
2114 union sockaddr_union sa
= PLYMOUTH_SOCKET
;
2117 _cleanup_free_
char *message
= NULL
;
2118 _cleanup_close_
int fd
= -1;
2120 /* Don't generate plymouth events if the service was already
2121 * started and we're just deserializing */
2122 if (m
->n_reloading
> 0)
2125 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2128 if (detect_container(NULL
) > 0)
2131 if (u
->type
!= UNIT_SERVICE
&&
2132 u
->type
!= UNIT_MOUNT
&&
2133 u
->type
!= UNIT_SWAP
)
2136 /* We set SOCK_NONBLOCK here so that we rather drop the
2137 * message then wait for plymouth */
2138 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
2140 log_error_errno(errno
, "socket() failed: %m");
2144 if (connect(fd
, &sa
.sa
, offsetof(struct sockaddr_un
, sun_path
) + 1 + strlen(sa
.un
.sun_path
+1)) < 0) {
2146 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2147 log_error_errno(errno
, "connect() failed: %m");
2151 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
2157 if (write(fd
, message
, n
+ 1) != n
+ 1)
2158 if (!IN_SET(errno
, EPIPE
, EAGAIN
, ENOENT
, ECONNREFUSED
, ECONNRESET
, ECONNABORTED
))
2159 log_error_errno(errno
, "Failed to write Plymouth message: %m");
2162 void manager_dispatch_bus_name_owner_changed(
2165 const char* old_owner
,
2166 const char *new_owner
) {
2173 u
= hashmap_get(m
->watch_bus
, name
);
2177 UNIT_VTABLE(u
)->bus_name_owner_change(u
, name
, old_owner
, new_owner
);
2180 int manager_open_serialization(Manager
*m
, FILE **_f
) {
2187 path
= m
->running_as
== SYSTEMD_SYSTEM
? "/run/systemd" : "/tmp";
2188 fd
= open_tmpfile(path
, O_RDWR
|O_CLOEXEC
);
2192 log_debug("Serializing state to %s", path
);
2194 f
= fdopen(fd
, "w+");
2205 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
, bool switching_root
) {
2218 fprintf(f
, "current-job-id=%i\n", m
->current_job_id
);
2219 fprintf(f
, "taint-usr=%s\n", yes_no(m
->taint_usr
));
2220 fprintf(f
, "n-installed-jobs=%u\n", m
->n_installed_jobs
);
2221 fprintf(f
, "n-failed-jobs=%u\n", m
->n_failed_jobs
);
2223 dual_timestamp_serialize(f
, "firmware-timestamp", &m
->firmware_timestamp
);
2224 dual_timestamp_serialize(f
, "loader-timestamp", &m
->loader_timestamp
);
2225 dual_timestamp_serialize(f
, "kernel-timestamp", &m
->kernel_timestamp
);
2226 dual_timestamp_serialize(f
, "initrd-timestamp", &m
->initrd_timestamp
);
2229 dual_timestamp_serialize(f
, "userspace-timestamp", &m
->userspace_timestamp
);
2230 dual_timestamp_serialize(f
, "finish-timestamp", &m
->finish_timestamp
);
2231 dual_timestamp_serialize(f
, "security-start-timestamp", &m
->security_start_timestamp
);
2232 dual_timestamp_serialize(f
, "security-finish-timestamp", &m
->security_finish_timestamp
);
2233 dual_timestamp_serialize(f
, "generators-start-timestamp", &m
->generators_start_timestamp
);
2234 dual_timestamp_serialize(f
, "generators-finish-timestamp", &m
->generators_finish_timestamp
);
2235 dual_timestamp_serialize(f
, "units-load-start-timestamp", &m
->units_load_start_timestamp
);
2236 dual_timestamp_serialize(f
, "units-load-finish-timestamp", &m
->units_load_finish_timestamp
);
2239 if (!switching_root
) {
2240 STRV_FOREACH(e
, m
->environment
) {
2241 _cleanup_free_
char *ce
;
2247 fprintf(f
, "env=%s\n", *e
);
2251 if (m
->notify_fd
>= 0) {
2254 copy
= fdset_put_dup(fds
, m
->notify_fd
);
2258 fprintf(f
, "notify-fd=%i\n", copy
);
2259 fprintf(f
, "notify-socket=%s\n", m
->notify_socket
);
2262 if (m
->kdbus_fd
>= 0) {
2265 copy
= fdset_put_dup(fds
, m
->kdbus_fd
);
2269 fprintf(f
, "kdbus-fd=%i\n", copy
);
2272 bus_track_serialize(m
->subscribed
, f
);
2276 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
2284 r
= unit_serialize(u
, f
, fds
, !switching_root
);
2291 assert(m
->n_reloading
> 0);
2297 r
= bus_fdset_add_all(m
, fds
);
2304 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
2310 log_debug("Deserializing state...");
2315 char line
[LINE_MAX
], *l
;
2317 if (!fgets(line
, sizeof(line
), f
)) {
2332 if (startswith(l
, "current-job-id=")) {
2335 if (safe_atou32(l
+15, &id
) < 0)
2336 log_debug("Failed to parse current job id value %s", l
+15);
2338 m
->current_job_id
= MAX(m
->current_job_id
, id
);
2340 } else if (startswith(l
, "n-installed-jobs=")) {
2343 if (safe_atou32(l
+17, &n
) < 0)
2344 log_debug("Failed to parse installed jobs counter %s", l
+17);
2346 m
->n_installed_jobs
+= n
;
2348 } else if (startswith(l
, "n-failed-jobs=")) {
2351 if (safe_atou32(l
+14, &n
) < 0)
2352 log_debug("Failed to parse failed jobs counter %s", l
+14);
2354 m
->n_failed_jobs
+= n
;
2356 } else if (startswith(l
, "taint-usr=")) {
2359 b
= parse_boolean(l
+10);
2361 log_debug("Failed to parse taint /usr flag %s", l
+10);
2363 m
->taint_usr
= m
->taint_usr
|| b
;
2365 } else if (startswith(l
, "firmware-timestamp="))
2366 dual_timestamp_deserialize(l
+19, &m
->firmware_timestamp
);
2367 else if (startswith(l
, "loader-timestamp="))
2368 dual_timestamp_deserialize(l
+17, &m
->loader_timestamp
);
2369 else if (startswith(l
, "kernel-timestamp="))
2370 dual_timestamp_deserialize(l
+17, &m
->kernel_timestamp
);
2371 else if (startswith(l
, "initrd-timestamp="))
2372 dual_timestamp_deserialize(l
+17, &m
->initrd_timestamp
);
2373 else if (startswith(l
, "userspace-timestamp="))
2374 dual_timestamp_deserialize(l
+20, &m
->userspace_timestamp
);
2375 else if (startswith(l
, "finish-timestamp="))
2376 dual_timestamp_deserialize(l
+17, &m
->finish_timestamp
);
2377 else if (startswith(l
, "security-start-timestamp="))
2378 dual_timestamp_deserialize(l
+25, &m
->security_start_timestamp
);
2379 else if (startswith(l
, "security-finish-timestamp="))
2380 dual_timestamp_deserialize(l
+26, &m
->security_finish_timestamp
);
2381 else if (startswith(l
, "generators-start-timestamp="))
2382 dual_timestamp_deserialize(l
+27, &m
->generators_start_timestamp
);
2383 else if (startswith(l
, "generators-finish-timestamp="))
2384 dual_timestamp_deserialize(l
+28, &m
->generators_finish_timestamp
);
2385 else if (startswith(l
, "units-load-start-timestamp="))
2386 dual_timestamp_deserialize(l
+27, &m
->units_load_start_timestamp
);
2387 else if (startswith(l
, "units-load-finish-timestamp="))
2388 dual_timestamp_deserialize(l
+28, &m
->units_load_finish_timestamp
);
2389 else if (startswith(l
, "env=")) {
2390 _cleanup_free_
char *uce
= NULL
;
2393 uce
= cunescape(l
+4);
2399 e
= strv_env_set(m
->environment
, uce
);
2405 strv_free(m
->environment
);
2408 } else if (startswith(l
, "notify-fd=")) {
2411 if (safe_atoi(l
+ 10, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2412 log_debug("Failed to parse notify fd: %s", l
+ 10);
2414 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
2415 safe_close(m
->notify_fd
);
2416 m
->notify_fd
= fdset_remove(fds
, fd
);
2419 } else if (startswith(l
, "notify-socket=")) {
2428 free(m
->notify_socket
);
2429 m
->notify_socket
= n
;
2431 } else if (startswith(l
, "kdbus-fd=")) {
2434 if (safe_atoi(l
+ 9, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2435 log_debug("Failed to parse kdbus fd: %s", l
+ 9);
2437 safe_close(m
->kdbus_fd
);
2438 m
->kdbus_fd
= fdset_remove(fds
, fd
);
2444 k
= bus_track_deserialize_item(&m
->deserialized_subscribed
, l
);
2446 log_debug_errno(k
, "Failed to deserialize bus tracker object: %m");
2448 log_debug("Unknown serialization item '%s'", l
);
2454 char name
[UNIT_NAME_MAX
+2];
2457 if (!fgets(name
, sizeof(name
), f
)) {
2468 r
= manager_load_unit(m
, strstrip(name
), NULL
, NULL
, &u
);
2472 r
= unit_deserialize(u
, f
, fds
);
2481 assert(m
->n_reloading
> 0);
2487 int manager_reload(Manager
*m
) {
2489 _cleanup_fclose_
FILE *f
= NULL
;
2490 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2494 r
= manager_open_serialization(m
, &f
);
2499 bus_manager_send_reloading(m
, true);
2507 r
= manager_serialize(m
, f
, fds
, false);
2513 if (fseeko(f
, 0, SEEK_SET
) < 0) {
2518 /* From here on there is no way back. */
2519 manager_clear_jobs_and_units(m
);
2520 manager_undo_generators(m
);
2521 lookup_paths_free(&m
->lookup_paths
);
2523 /* Find new unit paths */
2524 q
= manager_run_generators(m
);
2525 if (q
< 0 && r
>= 0)
2528 q
= lookup_paths_init(
2529 &m
->lookup_paths
, m
->running_as
, true,
2531 m
->generator_unit_path
,
2532 m
->generator_unit_path_early
,
2533 m
->generator_unit_path_late
);
2534 if (q
< 0 && r
>= 0)
2537 manager_build_unit_path_cache(m
);
2539 /* First, enumerate what we can from all config files */
2540 q
= manager_enumerate(m
);
2541 if (q
< 0 && r
>= 0)
2544 /* Second, deserialize our stored data */
2545 q
= manager_deserialize(m
, f
, fds
);
2546 if (q
< 0 && r
>= 0)
2552 /* Re-register notify_fd as event source */
2553 q
= manager_setup_notify(m
);
2554 if (q
< 0 && r
>= 0)
2557 /* Third, fire things up! */
2558 q
= manager_coldplug(m
);
2559 if (q
< 0 && r
>= 0)
2562 assert(m
->n_reloading
> 0);
2565 m
->send_reloading_done
= true;
2570 bool manager_is_reloading_or_reexecuting(Manager
*m
) {
2573 return m
->n_reloading
!= 0;
2576 void manager_reset_failed(Manager
*m
) {
2582 HASHMAP_FOREACH(u
, m
->units
, i
)
2583 unit_reset_failed(u
);
2586 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
2592 /* Returns true if the unit is inactive or going down */
2593 u
= manager_get_unit(m
, name
);
2597 return unit_inactive_or_pending(u
);
2600 static void manager_notify_finished(Manager
*m
) {
2601 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
2602 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
2607 if (m
->running_as
== SYSTEMD_SYSTEM
&& detect_container(NULL
) <= 0) {
2609 /* Note that m->kernel_usec.monotonic is always at 0,
2610 * and m->firmware_usec.monotonic and
2611 * m->loader_usec.monotonic should be considered
2612 * negative values. */
2614 firmware_usec
= m
->firmware_timestamp
.monotonic
- m
->loader_timestamp
.monotonic
;
2615 loader_usec
= m
->loader_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2616 userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2617 total_usec
= m
->firmware_timestamp
.monotonic
+ m
->finish_timestamp
.monotonic
;
2619 if (dual_timestamp_is_set(&m
->initrd_timestamp
)) {
2621 kernel_usec
= m
->initrd_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2622 initrd_usec
= m
->userspace_timestamp
.monotonic
- m
->initrd_timestamp
.monotonic
;
2624 log_struct(LOG_INFO
,
2625 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2626 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2627 "INITRD_USEC="USEC_FMT
, initrd_usec
,
2628 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2629 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2630 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2631 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
2632 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2633 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2636 kernel_usec
= m
->userspace_timestamp
.monotonic
- m
->kernel_timestamp
.monotonic
;
2639 log_struct(LOG_INFO
,
2640 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2641 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
2642 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2643 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2644 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
2645 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
2646 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2650 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
2651 total_usec
= userspace_usec
= m
->finish_timestamp
.monotonic
- m
->userspace_timestamp
.monotonic
;
2653 log_struct(LOG_INFO
,
2654 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED
),
2655 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
2656 LOG_MESSAGE("Startup finished in %s.",
2657 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)),
2661 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
2665 "STATUS=Startup finished in %s.",
2666 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
2669 void manager_check_finished(Manager
*m
) {
2675 if (hashmap_size(m
->jobs
) > 0) {
2677 if (m
->jobs_in_progress_event_source
)
2678 sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
2683 manager_flip_auto_status(m
, false);
2685 /* Notify Type=idle units that we are done now */
2686 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
2687 manager_close_idle_pipe(m
);
2689 /* Turn off confirm spawn now */
2690 m
->confirm_spawn
= false;
2692 /* No need to update ask password status when we're going non-interactive */
2693 manager_close_ask_password(m
);
2695 /* This is no longer the first boot */
2696 manager_set_first_boot(m
, false);
2698 if (dual_timestamp_is_set(&m
->finish_timestamp
))
2701 dual_timestamp_get(&m
->finish_timestamp
);
2703 manager_notify_finished(m
);
2705 SET_FOREACH(u
, m
->startup_units
, i
)
2707 cgroup_context_apply(unit_get_cgroup_context(u
), unit_get_cgroup_mask(u
), u
->cgroup_path
, manager_state(m
));
2710 static int create_generator_dir(Manager
*m
, char **generator
, const char *name
) {
2721 if (m
->running_as
== SYSTEMD_SYSTEM
&& getpid() == 1) {
2722 /* systemd --system, not running --test */
2724 p
= strappend("/run/systemd/", name
);
2728 r
= mkdir_p_label(p
, 0755);
2730 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2734 } else if (m
->running_as
== SYSTEMD_USER
) {
2735 const char *s
= NULL
;
2737 s
= getenv("XDG_RUNTIME_DIR");
2740 p
= strjoin(s
, "/systemd/", name
, NULL
);
2744 r
= mkdir_p_label(p
, 0755);
2746 log_error_errno(r
, "Failed to create generator directory %s: %m", p
);
2751 /* systemd --system --test */
2753 p
= strjoin("/tmp/systemd-", name
, ".XXXXXX", NULL
);
2758 log_error_errno(errno
, "Failed to create generator directory %s: %m",
2769 static void trim_generator_dir(Manager
*m
, char **generator
) {
2776 if (rmdir(*generator
) >= 0) {
2784 static int manager_run_generators(Manager
*m
) {
2785 _cleanup_free_
char **paths
= NULL
;
2786 const char *argv
[5];
2795 paths
= generator_paths(m
->running_as
);
2799 /* Optimize by skipping the whole process by not creating output directories
2800 * if no generators are found. */
2801 STRV_FOREACH(path
, paths
) {
2802 r
= access(*path
, F_OK
);
2805 if (errno
!= ENOENT
)
2806 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
2811 r
= create_generator_dir(m
, &m
->generator_unit_path
, "generator");
2815 r
= create_generator_dir(m
, &m
->generator_unit_path_early
, "generator.early");
2819 r
= create_generator_dir(m
, &m
->generator_unit_path_late
, "generator.late");
2823 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
2824 argv
[1] = m
->generator_unit_path
;
2825 argv
[2] = m
->generator_unit_path_early
;
2826 argv
[3] = m
->generator_unit_path_late
;
2829 RUN_WITH_UMASK(0022)
2830 execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, (char**) argv
);
2833 trim_generator_dir(m
, &m
->generator_unit_path
);
2834 trim_generator_dir(m
, &m
->generator_unit_path_early
);
2835 trim_generator_dir(m
, &m
->generator_unit_path_late
);
2839 static void remove_generator_dir(Manager
*m
, char **generator
) {
2846 strv_remove(m
->lookup_paths
.unit_path
, *generator
);
2847 rm_rf(*generator
, false, true, false);
2853 static void manager_undo_generators(Manager
*m
) {
2856 remove_generator_dir(m
, &m
->generator_unit_path
);
2857 remove_generator_dir(m
, &m
->generator_unit_path_early
);
2858 remove_generator_dir(m
, &m
->generator_unit_path_late
);
2861 int manager_environment_add(Manager
*m
, char **minus
, char **plus
) {
2862 char **a
= NULL
, **b
= NULL
, **l
;
2867 if (!strv_isempty(minus
)) {
2868 a
= strv_env_delete(l
, 1, minus
);
2875 if (!strv_isempty(plus
)) {
2876 b
= strv_env_merge(2, l
, plus
);
2885 if (m
->environment
!= l
)
2886 strv_free(m
->environment
);
2893 manager_clean_environment(m
);
2894 strv_sort(m
->environment
);
2899 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
2904 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
2905 if (!default_rlimit
[i
])
2908 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
2916 void manager_recheck_journal(Manager
*m
) {
2921 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2924 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
2925 if (u
&& SOCKET(u
)->state
!= SOCKET_RUNNING
) {
2926 log_close_journal();
2930 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
2931 if (u
&& SERVICE(u
)->state
!= SERVICE_RUNNING
) {
2932 log_close_journal();
2936 /* Hmm, OK, so the socket is fully up and the service is up
2937 * too, then let's make use of the thing. */
2941 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
2943 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
2945 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2948 m
->show_status
= mode
;
2951 touch("/run/systemd/show-status");
2953 unlink("/run/systemd/show-status");
2956 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
2959 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2962 if (m
->no_console_output
)
2965 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
2968 /* If we cannot find out the status properly, just proceed. */
2969 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
2972 if (m
->show_status
> 0)
2975 /* If Plymouth is running make sure we show the status, so
2976 * that there's something nice to see when people press Esc */
2977 return plymouth_running();
2980 void manager_set_first_boot(Manager
*m
, bool b
) {
2983 if (m
->running_as
!= SYSTEMD_SYSTEM
)
2989 touch("/run/systemd/first-boot");
2991 unlink("/run/systemd/first-boot");
2994 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
2997 /* If m is NULL, assume we're after shutdown and let the messages through. */
2999 if (m
&& !manager_get_show_status(m
, type
))
3002 /* XXX We should totally drop the check for ephemeral here
3003 * and thus effectively make 'Type=idle' pointless. */
3004 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
3007 va_start(ap
, format
);
3008 status_vprintf(status
, true, type
== STATUS_TYPE_EPHEMERAL
, format
, ap
);
3012 int manager_get_unit_by_path(Manager
*m
, const char *path
, const char *suffix
, Unit
**_found
) {
3013 _cleanup_free_
char *p
= NULL
;
3021 p
= unit_name_from_path(path
, suffix
);
3025 found
= manager_get_unit(m
, p
);
3035 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
3036 char p
[strlen(path
)+1];
3042 path_kill_slashes(p
);
3044 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
3047 const char *manager_get_runtime_prefix(Manager
*m
) {
3050 return m
->running_as
== SYSTEMD_SYSTEM
?
3052 getenv("XDG_RUNTIME_DIR");
3055 ManagerState
manager_state(Manager
*m
) {
3060 /* Did we ever finish booting? If not then we are still starting up */
3061 if (!dual_timestamp_is_set(&m
->finish_timestamp
)) {
3063 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3064 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3065 return MANAGER_INITIALIZING
;
3067 return MANAGER_STARTING
;
3070 /* Is the special shutdown target queued? If so, we are in shutdown state */
3071 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
3072 if (u
&& u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))
3073 return MANAGER_STOPPING
;
3075 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3076 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
3077 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3078 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3079 return MANAGER_MAINTENANCE
;
3081 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
3082 if (u
&& (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)) ||
3083 (u
->job
&& IN_SET(u
->job
->type
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
, JOB_RELOAD_OR_START
))))
3084 return MANAGER_MAINTENANCE
;
3086 /* Are there any failed units? If so, we are in degraded mode */
3087 if (set_size(m
->failed_units
) > 0)
3088 return MANAGER_DEGRADED
;
3090 return MANAGER_RUNNING
;
3093 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
3094 [MANAGER_INITIALIZING
] = "initializing",
3095 [MANAGER_STARTING
] = "starting",
3096 [MANAGER_RUNNING
] = "running",
3097 [MANAGER_DEGRADED
] = "degraded",
3098 [MANAGER_MAINTENANCE
] = "maintenance",
3099 [MANAGER_STOPPING
] = "stopping",
3102 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);