1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2010 Lennart Poettering
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include <sys/mount.h>
28 #include <sys/prctl.h>
29 #include <sys/reboot.h>
35 #if HAVE_VALGRIND_VALGRIND_H
36 #include <valgrind/valgrind.h>
40 #include "sd-daemon.h"
41 #include "sd-messages.h"
43 #include "alloc-util.h"
44 #include "architecture.h"
46 #include "bus-error.h"
48 #include "capability-util.h"
49 #include "clock-util.h"
50 #include "conf-parser.h"
51 #include "cpu-set-util.h"
52 #include "dbus-manager.h"
54 #include "emergency-action.h"
59 #include "format-util.h"
61 #include "hostname-setup.h"
62 #include "ima-setup.h"
64 #include "kmod-setup.h"
65 #include "load-fragment.h"
67 #include "loopback-setup.h"
68 #include "machine-id-setup.h"
71 #include "mount-setup.h"
73 #include "parse-util.h"
74 #include "path-util.h"
75 #include "proc-cmdline.h"
76 #include "process-util.h"
77 #include "raw-clone.h"
78 #include "rlimit-util.h"
80 #include "seccomp-util.h"
82 #include "selinux-setup.h"
83 #include "selinux-util.h"
84 #include "signal-util.h"
85 #include "smack-setup.h"
87 #include "stat-util.h"
88 #include "stdio-util.h"
90 #include "switch-root.h"
91 #include "terminal-util.h"
92 #include "umask-util.h"
93 #include "user-util.h"
103 ACTION_DUMP_CONFIGURATION_ITEMS
104 } arg_action
= ACTION_RUN
;
105 static char *arg_default_unit
= NULL
;
106 static bool arg_system
= false;
107 static bool arg_dump_core
= true;
108 static int arg_crash_chvt
= -1;
109 static bool arg_crash_shell
= false;
110 static bool arg_crash_reboot
= false;
111 static char *arg_confirm_spawn
= NULL
;
112 static ShowStatus arg_show_status
= _SHOW_STATUS_UNSET
;
113 static bool arg_switched_root
= false;
114 static bool arg_no_pager
= false;
115 static bool arg_service_watchdogs
= true;
116 static char ***arg_join_controllers
= NULL
;
117 static ExecOutput arg_default_std_output
= EXEC_OUTPUT_JOURNAL
;
118 static ExecOutput arg_default_std_error
= EXEC_OUTPUT_INHERIT
;
119 static usec_t arg_default_restart_usec
= DEFAULT_RESTART_USEC
;
120 static usec_t arg_default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
;
121 static usec_t arg_default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
;
122 static usec_t arg_default_start_limit_interval
= DEFAULT_START_LIMIT_INTERVAL
;
123 static unsigned arg_default_start_limit_burst
= DEFAULT_START_LIMIT_BURST
;
124 static usec_t arg_runtime_watchdog
= 0;
125 static usec_t arg_shutdown_watchdog
= 10 * USEC_PER_MINUTE
;
126 static char *arg_watchdog_device
= NULL
;
127 static char **arg_default_environment
= NULL
;
128 static struct rlimit
*arg_default_rlimit
[_RLIMIT_MAX
] = {};
129 static uint64_t arg_capability_bounding_set
= CAP_ALL
;
130 static nsec_t arg_timer_slack_nsec
= NSEC_INFINITY
;
131 static usec_t arg_default_timer_accuracy_usec
= 1 * USEC_PER_MINUTE
;
132 static Set
* arg_syscall_archs
= NULL
;
133 static FILE* arg_serialization
= NULL
;
134 static bool arg_default_cpu_accounting
= false;
135 static bool arg_default_io_accounting
= false;
136 static bool arg_default_ip_accounting
= false;
137 static bool arg_default_blockio_accounting
= false;
138 static bool arg_default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
;
139 static bool arg_default_tasks_accounting
= true;
140 static uint64_t arg_default_tasks_max
= UINT64_MAX
;
141 static sd_id128_t arg_machine_id
= {};
142 static EmergencyAction arg_cad_burst_action
= EMERGENCY_ACTION_REBOOT_FORCE
;
144 _noreturn_
static void freeze_or_reboot(void) {
146 if (arg_crash_reboot
) {
147 log_notice("Rebooting in 10s...");
150 log_notice("Rebooting now...");
151 (void) reboot(RB_AUTOBOOT
);
152 log_emergency_errno(errno
, "Failed to reboot: %m");
155 log_emergency("Freezing execution.");
159 _noreturn_
static void crash(int sig
) {
163 if (getpid_cached() != 1)
164 /* Pass this on immediately, if this is not PID 1 */
166 else if (!arg_dump_core
)
167 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig
));
169 sa
= (struct sigaction
) {
170 .sa_handler
= nop_signal_handler
,
171 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
174 /* We want to wait for the core process, hence let's enable SIGCHLD */
175 (void) sigaction(SIGCHLD
, &sa
, NULL
);
177 pid
= raw_clone(SIGCHLD
);
179 log_emergency_errno(errno
, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig
));
181 /* Enable default signal handler for core dump */
183 sa
= (struct sigaction
) {
184 .sa_handler
= SIG_DFL
,
186 (void) sigaction(sig
, &sa
, NULL
);
188 /* Don't limit the coredump size */
189 (void) setrlimit(RLIMIT_CORE
, &RLIMIT_MAKE_CONST(RLIM_INFINITY
));
191 /* Just to be sure... */
194 /* Raise the signal again */
196 (void) kill(pid
, sig
); /* raise() would kill the parent */
198 assert_not_reached("We shouldn't be here...");
204 /* Order things nicely. */
205 r
= wait_for_terminate(pid
, &status
);
207 log_emergency_errno(r
, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig
));
208 else if (status
.si_code
!= CLD_DUMPED
)
209 log_emergency("Caught <%s>, core dump failed (child "PID_FMT
", code=%s, status=%i/%s).",
210 signal_to_string(sig
),
211 pid
, sigchld_code_to_string(status
.si_code
),
213 strna(status
.si_code
== CLD_EXITED
214 ? exit_status_to_string(status
.si_status
, EXIT_STATUS_MINIMAL
)
215 : signal_to_string(status
.si_status
)));
217 log_emergency("Caught <%s>, dumped core as pid "PID_FMT
".", signal_to_string(sig
), pid
);
221 if (arg_crash_chvt
>= 0)
222 (void) chvt(arg_crash_chvt
);
224 sa
= (struct sigaction
) {
225 .sa_handler
= SIG_IGN
,
226 .sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
,
229 /* Let the kernel reap children for us */
230 (void) sigaction(SIGCHLD
, &sa
, NULL
);
232 if (arg_crash_shell
) {
233 log_notice("Executing crash shell in 10s...");
236 pid
= raw_clone(SIGCHLD
);
238 log_emergency_errno(errno
, "Failed to fork off crash shell: %m");
241 (void) make_console_stdio();
242 (void) execle("/bin/sh", "/bin/sh", NULL
, environ
);
244 log_emergency_errno(errno
, "execle() failed: %m");
247 log_info("Spawned crash shell as PID "PID_FMT
".", pid
);
248 (void) wait_for_terminate(pid
, NULL
);
255 static void install_crash_handler(void) {
256 static const struct sigaction sa
= {
258 .sa_flags
= SA_NODEFER
, /* So that we can raise the signal again from the signal handler */
262 /* We ignore the return value here, since, we don't mind if we
263 * cannot set up a crash handler */
264 r
= sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
266 log_debug_errno(r
, "I had trouble setting up the crash handler, ignoring: %m");
269 static int console_setup(void) {
270 _cleanup_close_
int tty_fd
= -1;
273 tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
);
275 return log_error_errno(tty_fd
, "Failed to open /dev/console: %m");
277 /* We don't want to force text mode. plymouth may be showing
278 * pictures already from initrd. */
279 r
= reset_terminal_fd(tty_fd
, false);
281 return log_error_errno(r
, "Failed to reset /dev/console: %m");
286 static int parse_crash_chvt(const char *value
) {
289 if (safe_atoi(value
, &arg_crash_chvt
) >= 0)
292 b
= parse_boolean(value
);
297 arg_crash_chvt
= 0; /* switch to where kmsg goes */
299 arg_crash_chvt
= -1; /* turn off switching */
304 static int parse_confirm_spawn(const char *value
, char **console
) {
308 r
= value
? parse_boolean(value
) : 1;
314 if (r
> 0) /* on with default tty */
315 s
= strdup("/dev/console");
316 else if (is_path(value
)) /* on with fully qualified path */
318 else /* on with only a tty file name, not a fully qualified path */
319 s
= strjoin("/dev/", value
);
326 static int set_machine_id(const char *m
) {
330 if (sd_id128_from_string(m
, &t
) < 0)
333 if (sd_id128_is_null(t
))
340 static int parse_proc_cmdline_item(const char *key
, const char *value
, void *data
) {
346 if (STR_IN_SET(key
, "systemd.unit", "rd.systemd.unit")) {
348 if (proc_cmdline_value_missing(key
, value
))
351 if (!unit_name_is_valid(value
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
352 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key
, value
);
353 else if (in_initrd() == !!startswith(key
, "rd.")) {
354 if (free_and_strdup(&arg_default_unit
, value
) < 0)
358 } else if (proc_cmdline_key_streq(key
, "systemd.dump_core")) {
360 r
= value
? parse_boolean(value
) : true;
362 log_warning("Failed to parse dump core switch %s. Ignoring.", value
);
366 } else if (proc_cmdline_key_streq(key
, "systemd.crash_chvt")) {
369 arg_crash_chvt
= 0; /* turn on */
370 else if (parse_crash_chvt(value
) < 0)
371 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value
);
373 } else if (proc_cmdline_key_streq(key
, "systemd.crash_shell")) {
375 r
= value
? parse_boolean(value
) : true;
377 log_warning("Failed to parse crash shell switch %s. Ignoring.", value
);
381 } else if (proc_cmdline_key_streq(key
, "systemd.crash_reboot")) {
383 r
= value
? parse_boolean(value
) : true;
385 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value
);
387 arg_crash_reboot
= r
;
389 } else if (proc_cmdline_key_streq(key
, "systemd.confirm_spawn")) {
392 r
= parse_confirm_spawn(value
, &s
);
394 log_warning_errno(r
, "Failed to parse confirm_spawn switch %s. Ignoring.", value
);
396 free(arg_confirm_spawn
);
397 arg_confirm_spawn
= s
;
400 } else if (proc_cmdline_key_streq(key
, "systemd.service_watchdogs")) {
402 r
= value
? parse_boolean(value
) : true;
404 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value
);
406 arg_service_watchdogs
= r
;
408 } else if (proc_cmdline_key_streq(key
, "systemd.show_status")) {
411 r
= parse_show_status(value
, &arg_show_status
);
413 log_warning("Failed to parse show status switch %s. Ignoring.", value
);
415 arg_show_status
= SHOW_STATUS_YES
;
417 } else if (proc_cmdline_key_streq(key
, "systemd.default_standard_output")) {
419 if (proc_cmdline_value_missing(key
, value
))
422 r
= exec_output_from_string(value
);
424 log_warning("Failed to parse default standard output switch %s. Ignoring.", value
);
426 arg_default_std_output
= r
;
428 } else if (proc_cmdline_key_streq(key
, "systemd.default_standard_error")) {
430 if (proc_cmdline_value_missing(key
, value
))
433 r
= exec_output_from_string(value
);
435 log_warning("Failed to parse default standard error switch %s. Ignoring.", value
);
437 arg_default_std_error
= r
;
439 } else if (streq(key
, "systemd.setenv")) {
441 if (proc_cmdline_value_missing(key
, value
))
444 if (env_assignment_is_valid(value
)) {
447 env
= strv_env_set(arg_default_environment
, value
);
451 arg_default_environment
= env
;
453 log_warning("Environment variable name '%s' is not valid. Ignoring.", value
);
455 } else if (proc_cmdline_key_streq(key
, "systemd.machine_id")) {
457 if (proc_cmdline_value_missing(key
, value
))
460 r
= set_machine_id(value
);
462 log_warning("MachineID '%s' is not valid. Ignoring.", value
);
464 } else if (proc_cmdline_key_streq(key
, "systemd.default_timeout_start_sec")) {
466 if (proc_cmdline_value_missing(key
, value
))
469 r
= parse_sec(value
, &arg_default_timeout_start_usec
);
471 log_warning_errno(r
, "Failed to parse default start timeout: %s, ignoring.", value
);
473 if (arg_default_timeout_start_usec
<= 0)
474 arg_default_timeout_start_usec
= USEC_INFINITY
;
476 } else if (proc_cmdline_key_streq(key
, "systemd.watchdog_device")) {
478 if (proc_cmdline_value_missing(key
, value
))
481 parse_path_argument_and_warn(value
, false, &arg_watchdog_device
);
483 } else if (streq(key
, "quiet") && !value
) {
485 if (arg_show_status
== _SHOW_STATUS_UNSET
)
486 arg_show_status
= SHOW_STATUS_AUTO
;
488 } else if (streq(key
, "debug") && !value
) {
490 /* Note that log_parse_environment() handles 'debug'
491 * too, and sets the log level to LOG_DEBUG. */
493 if (detect_container() > 0)
494 log_set_target(LOG_TARGET_CONSOLE
);
499 /* SysV compatibility */
500 target
= runlevel_to_target(key
);
502 return free_and_strdup(&arg_default_unit
, target
);
508 #define DEFINE_SETTER(name, func, descr) \
509 static int name(const char *unit, \
510 const char *filename, \
512 const char *section, \
513 unsigned section_line, \
514 const char *lvalue, \
516 const char *rvalue, \
528 log_syntax(unit, LOG_ERR, filename, line, r, \
529 "Invalid " descr "'%s': %m", \
535 DEFINE_SETTER(config_parse_level2
, log_set_max_level_from_string
, "log level")
536 DEFINE_SETTER(config_parse_target
, log_set_target_from_string
, "target")
537 DEFINE_SETTER(config_parse_color
, log_show_color_from_string
, "color" )
538 DEFINE_SETTER(config_parse_location
, log_show_location_from_string
, "location")
540 static int config_parse_cpu_affinity2(
542 const char *filename
,
545 unsigned section_line
,
552 _cleanup_cpu_free_ cpu_set_t
*c
= NULL
;
555 ncpus
= parse_cpu_set_and_warn(rvalue
, &c
, unit
, filename
, line
, lvalue
);
559 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
560 log_warning_errno(errno
, "Failed to set CPU affinity: %m");
565 static int config_parse_show_status(
567 const char *filename
,
570 unsigned section_line
,
578 ShowStatus
*b
= data
;
585 k
= parse_show_status(rvalue
, b
);
587 log_syntax(unit
, LOG_ERR
, filename
, line
, k
, "Failed to parse show status setting, ignoring: %s", rvalue
);
594 static int config_parse_output_restricted(
596 const char *filename
,
599 unsigned section_line
,
606 ExecOutput t
, *eo
= data
;
613 t
= exec_output_from_string(rvalue
);
615 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "Failed to parse output type, ignoring: %s", rvalue
);
619 if (IN_SET(t
, EXEC_OUTPUT_SOCKET
, EXEC_OUTPUT_NAMED_FD
, EXEC_OUTPUT_FILE
)) {
620 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue
);
628 static int config_parse_crash_chvt(
630 const char *filename
,
633 unsigned section_line
,
646 r
= parse_crash_chvt(rvalue
);
648 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue
);
655 static int parse_config_file(void) {
657 const ConfigTableItem items
[] = {
658 { "Manager", "LogLevel", config_parse_level2
, 0, NULL
},
659 { "Manager", "LogTarget", config_parse_target
, 0, NULL
},
660 { "Manager", "LogColor", config_parse_color
, 0, NULL
},
661 { "Manager", "LogLocation", config_parse_location
, 0, NULL
},
662 { "Manager", "DumpCore", config_parse_bool
, 0, &arg_dump_core
},
663 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt
, 0, NULL
},
664 { "Manager", "CrashChangeVT", config_parse_crash_chvt
, 0, NULL
},
665 { "Manager", "CrashShell", config_parse_bool
, 0, &arg_crash_shell
},
666 { "Manager", "CrashReboot", config_parse_bool
, 0, &arg_crash_reboot
},
667 { "Manager", "ShowStatus", config_parse_show_status
, 0, &arg_show_status
},
668 { "Manager", "CPUAffinity", config_parse_cpu_affinity2
, 0, NULL
},
669 { "Manager", "JoinControllers", config_parse_join_controllers
, 0, &arg_join_controllers
},
670 { "Manager", "RuntimeWatchdogSec", config_parse_sec
, 0, &arg_runtime_watchdog
},
671 { "Manager", "ShutdownWatchdogSec", config_parse_sec
, 0, &arg_shutdown_watchdog
},
672 { "Manager", "WatchdogDevice", config_parse_path
, 0, &arg_watchdog_device
},
673 { "Manager", "CapabilityBoundingSet", config_parse_capability_set
, 0, &arg_capability_bounding_set
},
675 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs
, 0, &arg_syscall_archs
},
677 { "Manager", "TimerSlackNSec", config_parse_nsec
, 0, &arg_timer_slack_nsec
},
678 { "Manager", "DefaultTimerAccuracySec", config_parse_sec
, 0, &arg_default_timer_accuracy_usec
},
679 { "Manager", "DefaultStandardOutput", config_parse_output_restricted
,0, &arg_default_std_output
},
680 { "Manager", "DefaultStandardError", config_parse_output_restricted
,0, &arg_default_std_error
},
681 { "Manager", "DefaultTimeoutStartSec", config_parse_sec
, 0, &arg_default_timeout_start_usec
},
682 { "Manager", "DefaultTimeoutStopSec", config_parse_sec
, 0, &arg_default_timeout_stop_usec
},
683 { "Manager", "DefaultRestartSec", config_parse_sec
, 0, &arg_default_restart_usec
},
684 { "Manager", "DefaultStartLimitInterval", config_parse_sec
, 0, &arg_default_start_limit_interval
}, /* obsolete alias */
685 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec
, 0, &arg_default_start_limit_interval
},
686 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned
, 0, &arg_default_start_limit_burst
},
687 { "Manager", "DefaultEnvironment", config_parse_environ
, 0, &arg_default_environment
},
688 { "Manager", "DefaultLimitCPU", config_parse_limit
, RLIMIT_CPU
, arg_default_rlimit
},
689 { "Manager", "DefaultLimitFSIZE", config_parse_limit
, RLIMIT_FSIZE
, arg_default_rlimit
},
690 { "Manager", "DefaultLimitDATA", config_parse_limit
, RLIMIT_DATA
, arg_default_rlimit
},
691 { "Manager", "DefaultLimitSTACK", config_parse_limit
, RLIMIT_STACK
, arg_default_rlimit
},
692 { "Manager", "DefaultLimitCORE", config_parse_limit
, RLIMIT_CORE
, arg_default_rlimit
},
693 { "Manager", "DefaultLimitRSS", config_parse_limit
, RLIMIT_RSS
, arg_default_rlimit
},
694 { "Manager", "DefaultLimitNOFILE", config_parse_limit
, RLIMIT_NOFILE
, arg_default_rlimit
},
695 { "Manager", "DefaultLimitAS", config_parse_limit
, RLIMIT_AS
, arg_default_rlimit
},
696 { "Manager", "DefaultLimitNPROC", config_parse_limit
, RLIMIT_NPROC
, arg_default_rlimit
},
697 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit
, RLIMIT_MEMLOCK
, arg_default_rlimit
},
698 { "Manager", "DefaultLimitLOCKS", config_parse_limit
, RLIMIT_LOCKS
, arg_default_rlimit
},
699 { "Manager", "DefaultLimitSIGPENDING", config_parse_limit
, RLIMIT_SIGPENDING
, arg_default_rlimit
},
700 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit
, RLIMIT_MSGQUEUE
, arg_default_rlimit
},
701 { "Manager", "DefaultLimitNICE", config_parse_limit
, RLIMIT_NICE
, arg_default_rlimit
},
702 { "Manager", "DefaultLimitRTPRIO", config_parse_limit
, RLIMIT_RTPRIO
, arg_default_rlimit
},
703 { "Manager", "DefaultLimitRTTIME", config_parse_limit
, RLIMIT_RTTIME
, arg_default_rlimit
},
704 { "Manager", "DefaultCPUAccounting", config_parse_bool
, 0, &arg_default_cpu_accounting
},
705 { "Manager", "DefaultIOAccounting", config_parse_bool
, 0, &arg_default_io_accounting
},
706 { "Manager", "DefaultIPAccounting", config_parse_bool
, 0, &arg_default_ip_accounting
},
707 { "Manager", "DefaultBlockIOAccounting", config_parse_bool
, 0, &arg_default_blockio_accounting
},
708 { "Manager", "DefaultMemoryAccounting", config_parse_bool
, 0, &arg_default_memory_accounting
},
709 { "Manager", "DefaultTasksAccounting", config_parse_bool
, 0, &arg_default_tasks_accounting
},
710 { "Manager", "DefaultTasksMax", config_parse_tasks_max
, 0, &arg_default_tasks_max
},
711 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action
, 0, &arg_cad_burst_action
},
715 const char *fn
, *conf_dirs_nulstr
;
718 PKGSYSCONFDIR
"/system.conf" :
719 PKGSYSCONFDIR
"/user.conf";
721 conf_dirs_nulstr
= arg_system
?
722 CONF_PATHS_NULSTR("systemd/system.conf.d") :
723 CONF_PATHS_NULSTR("systemd/user.conf.d");
725 (void) config_parse_many_nulstr(fn
, conf_dirs_nulstr
, "Manager\0", config_item_table_lookup
, items
, CONFIG_PARSE_WARN
, NULL
);
727 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
728 * like everywhere else. */
729 if (arg_default_timeout_start_usec
<= 0)
730 arg_default_timeout_start_usec
= USEC_INFINITY
;
731 if (arg_default_timeout_stop_usec
<= 0)
732 arg_default_timeout_stop_usec
= USEC_INFINITY
;
737 static void set_manager_defaults(Manager
*m
) {
741 m
->default_timer_accuracy_usec
= arg_default_timer_accuracy_usec
;
742 m
->default_std_output
= arg_default_std_output
;
743 m
->default_std_error
= arg_default_std_error
;
744 m
->default_timeout_start_usec
= arg_default_timeout_start_usec
;
745 m
->default_timeout_stop_usec
= arg_default_timeout_stop_usec
;
746 m
->default_restart_usec
= arg_default_restart_usec
;
747 m
->default_start_limit_interval
= arg_default_start_limit_interval
;
748 m
->default_start_limit_burst
= arg_default_start_limit_burst
;
749 m
->default_cpu_accounting
= arg_default_cpu_accounting
;
750 m
->default_io_accounting
= arg_default_io_accounting
;
751 m
->default_ip_accounting
= arg_default_ip_accounting
;
752 m
->default_blockio_accounting
= arg_default_blockio_accounting
;
753 m
->default_memory_accounting
= arg_default_memory_accounting
;
754 m
->default_tasks_accounting
= arg_default_tasks_accounting
;
755 m
->default_tasks_max
= arg_default_tasks_max
;
757 manager_set_default_rlimits(m
, arg_default_rlimit
);
758 manager_environment_add(m
, NULL
, arg_default_environment
);
761 static void set_manager_settings(Manager
*m
) {
765 m
->confirm_spawn
= arg_confirm_spawn
;
766 m
->service_watchdogs
= arg_service_watchdogs
;
767 m
->runtime_watchdog
= arg_runtime_watchdog
;
768 m
->shutdown_watchdog
= arg_shutdown_watchdog
;
769 m
->cad_burst_action
= arg_cad_burst_action
;
771 manager_set_show_status(m
, arg_show_status
);
774 static int parse_argv(int argc
, char *argv
[]) {
777 ARG_LOG_LEVEL
= 0x100,
787 ARG_DUMP_CONFIGURATION_ITEMS
,
796 ARG_DEFAULT_STD_OUTPUT
,
797 ARG_DEFAULT_STD_ERROR
,
799 ARG_SERVICE_WATCHDOGS
,
802 static const struct option options
[] = {
803 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
804 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
805 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
806 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
807 { "unit", required_argument
, NULL
, ARG_UNIT
},
808 { "system", no_argument
, NULL
, ARG_SYSTEM
},
809 { "user", no_argument
, NULL
, ARG_USER
},
810 { "test", no_argument
, NULL
, ARG_TEST
},
811 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
812 { "help", no_argument
, NULL
, 'h' },
813 { "version", no_argument
, NULL
, ARG_VERSION
},
814 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
815 { "dump-core", optional_argument
, NULL
, ARG_DUMP_CORE
},
816 { "crash-chvt", required_argument
, NULL
, ARG_CRASH_CHVT
},
817 { "crash-shell", optional_argument
, NULL
, ARG_CRASH_SHELL
},
818 { "crash-reboot", optional_argument
, NULL
, ARG_CRASH_REBOOT
},
819 { "confirm-spawn", optional_argument
, NULL
, ARG_CONFIRM_SPAWN
},
820 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
821 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
822 { "switched-root", no_argument
, NULL
, ARG_SWITCHED_ROOT
},
823 { "default-standard-output", required_argument
, NULL
, ARG_DEFAULT_STD_OUTPUT
, },
824 { "default-standard-error", required_argument
, NULL
, ARG_DEFAULT_STD_ERROR
, },
825 { "machine-id", required_argument
, NULL
, ARG_MACHINE_ID
},
826 { "service-watchdogs", required_argument
, NULL
, ARG_SERVICE_WATCHDOGS
},
835 if (getpid_cached() == 1)
838 while ((c
= getopt_long(argc
, argv
, "hDbsz:", options
, NULL
)) >= 0)
843 r
= log_set_max_level_from_string(optarg
);
845 log_error("Failed to parse log level %s.", optarg
);
852 r
= log_set_target_from_string(optarg
);
854 log_error("Failed to parse log target %s.", optarg
);
863 r
= log_show_color_from_string(optarg
);
865 log_error("Failed to parse log color setting %s.", optarg
);
869 log_show_color(true);
873 case ARG_LOG_LOCATION
:
875 r
= log_show_location_from_string(optarg
);
877 log_error("Failed to parse log location setting %s.", optarg
);
881 log_show_location(true);
885 case ARG_DEFAULT_STD_OUTPUT
:
886 r
= exec_output_from_string(optarg
);
888 log_error("Failed to parse default standard output setting %s.", optarg
);
891 arg_default_std_output
= r
;
894 case ARG_DEFAULT_STD_ERROR
:
895 r
= exec_output_from_string(optarg
);
897 log_error("Failed to parse default standard error output setting %s.", optarg
);
900 arg_default_std_error
= r
;
904 r
= free_and_strdup(&arg_default_unit
, optarg
);
906 return log_error_errno(r
, "Failed to set default unit %s: %m", optarg
);
919 arg_action
= ACTION_TEST
;
927 arg_action
= ACTION_VERSION
;
930 case ARG_DUMP_CONFIGURATION_ITEMS
:
931 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
936 arg_dump_core
= true;
938 r
= parse_boolean(optarg
);
940 return log_error_errno(r
, "Failed to parse dump core boolean: %s", optarg
);
946 r
= parse_crash_chvt(optarg
);
948 return log_error_errno(r
, "Failed to parse crash virtual terminal index: %s", optarg
);
951 case ARG_CRASH_SHELL
:
953 arg_crash_shell
= true;
955 r
= parse_boolean(optarg
);
957 return log_error_errno(r
, "Failed to parse crash shell boolean: %s", optarg
);
962 case ARG_CRASH_REBOOT
:
964 arg_crash_reboot
= true;
966 r
= parse_boolean(optarg
);
968 return log_error_errno(r
, "Failed to parse crash shell boolean: %s", optarg
);
969 arg_crash_reboot
= r
;
973 case ARG_CONFIRM_SPAWN
:
974 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
976 r
= parse_confirm_spawn(optarg
, &arg_confirm_spawn
);
978 return log_error_errno(r
, "Failed to parse confirm spawn option: %m");
981 case ARG_SERVICE_WATCHDOGS
:
982 r
= parse_boolean(optarg
);
984 return log_error_errno(r
, "Failed to parse service watchdogs boolean: %s", optarg
);
985 arg_service_watchdogs
= r
;
988 case ARG_SHOW_STATUS
:
990 r
= parse_show_status(optarg
, &arg_show_status
);
992 log_error("Failed to parse show status boolean %s.", optarg
);
996 arg_show_status
= SHOW_STATUS_YES
;
999 case ARG_DESERIALIZE
: {
1003 r
= safe_atoi(optarg
, &fd
);
1004 if (r
< 0 || fd
< 0) {
1005 log_error("Failed to parse deserialize option %s.", optarg
);
1009 (void) fd_cloexec(fd
, true);
1011 f
= fdopen(fd
, "r");
1013 return log_error_errno(errno
, "Failed to open serialization fd: %m");
1015 safe_fclose(arg_serialization
);
1016 arg_serialization
= f
;
1021 case ARG_SWITCHED_ROOT
:
1022 arg_switched_root
= true;
1025 case ARG_MACHINE_ID
:
1026 r
= set_machine_id(optarg
);
1028 return log_error_errno(r
, "MachineID '%s' is not valid.", optarg
);
1032 arg_action
= ACTION_HELP
;
1036 log_set_max_level(LOG_DEBUG
);
1042 /* Just to eat away the sysvinit kernel
1043 * cmdline args without getopt() error
1044 * messages that we'll parse in
1045 * parse_proc_cmdline_word() or ignore. */
1048 if (getpid_cached() != 1)
1054 assert_not_reached("Unhandled option code.");
1057 if (optind
< argc
&& getpid_cached() != 1) {
1058 /* Hmm, when we aren't run as init system
1059 * let's complain about excess arguments */
1061 log_error("Excess arguments.");
1068 static int help(void) {
1070 printf("%s [OPTIONS...]\n\n"
1071 "Starts up and maintains the system or user services.\n\n"
1072 " -h --help Show this help\n"
1073 " --version Show version\n"
1074 " --test Determine startup sequence, dump it and exit\n"
1075 " --no-pager Do not pipe output into a pager\n"
1076 " --dump-configuration-items Dump understood unit configuration items\n"
1077 " --unit=UNIT Set default unit\n"
1078 " --system Run a system instance, even if PID != 1\n"
1079 " --user Run a user instance\n"
1080 " --dump-core[=BOOL] Dump core on crash\n"
1081 " --crash-vt=NR Change to specified VT on crash\n"
1082 " --crash-reboot[=BOOL] Reboot on crash\n"
1083 " --crash-shell[=BOOL] Run shell on crash\n"
1084 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1085 " --show-status[=BOOL] Show status updates on the console during bootup\n"
1086 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
1087 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
1088 " --log-color[=BOOL] Highlight important log messages\n"
1089 " --log-location[=BOOL] Include code location in log messages\n"
1090 " --default-standard-output= Set default standard output for services\n"
1091 " --default-standard-error= Set default standard error output for services\n",
1092 program_invocation_short_name
);
1097 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
, bool switching_root
) {
1098 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1099 _cleanup_fclose_
FILE *f
= NULL
;
1106 r
= manager_open_serialization(m
, &f
);
1108 return log_error_errno(r
, "Failed to create serialization file: %m");
1110 /* Make sure nothing is really destructed when we shut down */
1112 bus_manager_send_reloading(m
, true);
1118 r
= manager_serialize(m
, f
, fds
, switching_root
);
1120 return log_error_errno(r
, "Failed to serialize state: %m");
1122 if (fseeko(f
, 0, SEEK_SET
) == (off_t
) -1)
1123 return log_error_errno(errno
, "Failed to rewind serialization fd: %m");
1125 r
= fd_cloexec(fileno(f
), false);
1127 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization: %m");
1129 r
= fdset_cloexec(fds
, false);
1131 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization fds: %m");
1142 static int bump_rlimit_nofile(struct rlimit
*saved_rlimit
) {
1146 _cleanup_free_
char *nr_open
= NULL
;
1148 assert(saved_rlimit
);
1150 /* Save the original RLIMIT_NOFILE so that we can reset it
1151 * later when transitioning from the initrd to the main
1152 * systemd or suchlike. */
1153 if (getrlimit(RLIMIT_NOFILE
, saved_rlimit
) < 0)
1154 return log_warning_errno(errno
, "Reading RLIMIT_NOFILE failed, ignoring: %m");
1156 /* Make sure forked processes get the default kernel setting */
1157 if (!arg_default_rlimit
[RLIMIT_NOFILE
]) {
1160 rl
= newdup(struct rlimit
, saved_rlimit
, 1);
1164 arg_default_rlimit
[RLIMIT_NOFILE
] = rl
;
1167 /* Get current RLIMIT_NOFILE maximum compiled into the kernel. */
1168 r
= read_one_line_file("/proc/sys/fs/nr_open", &nr_open
);
1170 r
= safe_atoi(nr_open
, &min_max
);
1171 /* If we fail, fallback to the hard-coded kernel limit of 1024 * 1024. */
1173 min_max
= 1024 * 1024;
1175 /* Bump up the resource limit for ourselves substantially */
1176 nl
.rlim_cur
= nl
.rlim_max
= min_max
;
1177 r
= setrlimit_closest(RLIMIT_NOFILE
, &nl
);
1179 return log_warning_errno(r
, "Setting RLIMIT_NOFILE failed, ignoring: %m");
1184 static int bump_rlimit_memlock(struct rlimit
*saved_rlimit
) {
1187 assert(saved_rlimit
);
1188 assert(getuid() == 0);
1190 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1191 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1192 * bump the value high enough for the root user. */
1194 if (getrlimit(RLIMIT_MEMLOCK
, saved_rlimit
) < 0)
1195 return log_warning_errno(errno
, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1197 r
= setrlimit_closest(RLIMIT_MEMLOCK
, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1199 return log_warning_errno(r
, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1204 static void test_usr(void) {
1206 /* Check that /usr is not a separate fs */
1208 if (dir_is_empty("/usr") <= 0)
1211 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1212 "Some things will probably break (sometimes even silently) in mysterious ways. "
1213 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1216 static int enforce_syscall_archs(Set
*archs
) {
1220 if (!is_seccomp_available())
1223 r
= seccomp_restrict_archs(arg_syscall_archs
);
1225 return log_error_errno(r
, "Failed to enforce system call architecture restrication: %m");
1230 static int status_welcome(void) {
1231 _cleanup_free_
char *pretty_name
= NULL
, *ansi_color
= NULL
;
1235 if (arg_show_status
<= 0)
1238 FOREACH_STRING(fn
, "/etc/os-release", "/usr/lib/os-release") {
1239 r
= parse_env_file(fn
, NEWLINE
,
1240 "PRETTY_NAME", &pretty_name
,
1241 "ANSI_COLOR", &ansi_color
,
1247 if (r
< 0 && r
!= -ENOENT
)
1248 log_warning_errno(r
, "Failed to read os-release file, ignoring: %m");
1250 if (log_get_show_color())
1251 return status_printf(NULL
, false, false,
1252 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1253 isempty(ansi_color
) ? "1" : ansi_color
,
1254 isempty(pretty_name
) ? "Linux" : pretty_name
);
1256 return status_printf(NULL
, false, false,
1257 "\nWelcome to %s!\n",
1258 isempty(pretty_name
) ? "Linux" : pretty_name
);
1261 static int write_container_id(void) {
1265 c
= getenv("container");
1269 RUN_WITH_UMASK(0022)
1270 r
= write_string_file("/run/systemd/container", c
, WRITE_STRING_FILE_CREATE
);
1272 return log_warning_errno(r
, "Failed to write /run/systemd/container, ignoring: %m");
1277 static int bump_unix_max_dgram_qlen(void) {
1278 _cleanup_free_
char *qlen
= NULL
;
1282 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
1283 * default of 16 is simply too low. We set the value really
1284 * really early during boot, so that it is actually applied to
1285 * all our sockets, including the $NOTIFY_SOCKET one. */
1287 r
= read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen
);
1289 return log_warning_errno(r
, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1291 r
= safe_atolu(qlen
, &v
);
1293 return log_warning_errno(r
, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
1295 if (v
>= DEFAULT_UNIX_MAX_DGRAM_QLEN
)
1299 if (asprintf(&qlen
, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN
) < 0)
1302 r
= write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen
, 0);
1304 return log_full_errno(IN_SET(r
, -EROFS
, -EPERM
, -EACCES
) ? LOG_DEBUG
: LOG_WARNING
, r
,
1305 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1310 static int fixup_environment(void) {
1311 _cleanup_free_
char *term
= NULL
;
1315 /* Only fix up the environment when we are started as PID 1 */
1316 if (getpid_cached() != 1)
1319 /* We expect the environment to be set correctly if run inside a container. */
1320 if (detect_container() > 0)
1323 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1324 * device used by the console. We try to make a better guess here since some consoles might not have support
1325 * for color mode for example.
1327 * However if TERM was configured through the kernel command line then leave it alone. */
1328 r
= proc_cmdline_get_key("TERM", 0, &term
);
1332 t
= term
?: default_term_for_tty("/dev/console");
1334 if (setenv("TERM", t
, 1) < 0)
1340 static void redirect_telinit(int argc
, char *argv
[]) {
1342 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1344 #if HAVE_SYSV_COMPAT
1345 if (getpid_cached() == 1)
1348 if (!strstr(program_invocation_short_name
, "init"))
1351 execv(SYSTEMCTL_BINARY_PATH
, argv
);
1352 log_error_errno(errno
, "Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
1357 static int become_shutdown(
1358 const char *shutdown_verb
,
1361 char log_level
[DECIMAL_STR_MAX(int) + 1],
1362 exit_code
[DECIMAL_STR_MAX(uint8_t) + 1],
1363 timeout
[DECIMAL_STR_MAX(usec_t
) + 1];
1365 const char* command_line
[13] = {
1366 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1368 "--timeout", timeout
,
1369 "--log-level", log_level
,
1373 _cleanup_strv_free_
char **env_block
= NULL
;
1377 assert(shutdown_verb
);
1378 assert(!command_line
[pos
]);
1379 env_block
= strv_copy(environ
);
1381 xsprintf(log_level
, "%d", log_get_max_level());
1382 xsprintf(timeout
, "%" PRI_USEC
"us", arg_default_timeout_stop_usec
);
1384 switch (log_get_target()) {
1386 case LOG_TARGET_KMSG
:
1387 case LOG_TARGET_JOURNAL_OR_KMSG
:
1388 case LOG_TARGET_SYSLOG_OR_KMSG
:
1389 command_line
[pos
++] = "kmsg";
1392 case LOG_TARGET_NULL
:
1393 command_line
[pos
++] = "null";
1396 case LOG_TARGET_CONSOLE
:
1398 command_line
[pos
++] = "console";
1402 if (log_get_show_color())
1403 command_line
[pos
++] = "--log-color";
1405 if (log_get_show_location())
1406 command_line
[pos
++] = "--log-location";
1408 if (streq(shutdown_verb
, "exit")) {
1409 command_line
[pos
++] = "--exit-code";
1410 command_line
[pos
++] = exit_code
;
1411 xsprintf(exit_code
, "%d", retval
);
1414 assert(pos
< ELEMENTSOF(command_line
));
1416 if (streq(shutdown_verb
, "reboot") &&
1417 arg_shutdown_watchdog
> 0 &&
1418 arg_shutdown_watchdog
!= USEC_INFINITY
) {
1422 /* If we reboot let's set the shutdown
1423 * watchdog and tell the shutdown binary to
1424 * repeatedly ping it */
1425 r
= watchdog_set_timeout(&arg_shutdown_watchdog
);
1426 watchdog_close(r
< 0);
1428 /* Tell the binary how often to ping, ignore failure */
1429 if (asprintf(&e
, "WATCHDOG_USEC="USEC_FMT
, arg_shutdown_watchdog
) > 0)
1430 (void) strv_consume(&env_block
, e
);
1432 if (arg_watchdog_device
&&
1433 asprintf(&e
, "WATCHDOG_DEVICE=%s", arg_watchdog_device
) > 0)
1434 (void) strv_consume(&env_block
, e
);
1436 watchdog_close(true);
1438 /* Avoid the creation of new processes forked by the
1439 * kernel; at this point, we will not listen to the
1441 if (detect_container() <= 0)
1442 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER
);
1444 execve(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
, env_block
);
1448 static void initialize_clock(void) {
1451 if (clock_is_localtime(NULL
) > 0) {
1455 * The very first call of settimeofday() also does a time warp in the kernel.
1457 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1458 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1459 * the RTC alone if the registry tells that the RTC runs in UTC.
1461 r
= clock_set_timezone(&min
);
1463 log_error_errno(r
, "Failed to apply local time delta, ignoring: %m");
1465 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min
);
1467 } else if (!in_initrd()) {
1469 * Do a dummy very first call to seal the kernel's time warp magic.
1471 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1472 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1473 * until we reach the real system.
1475 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1476 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1477 * be treated as UTC that way.
1479 (void) clock_reset_timewarp();
1482 r
= clock_apply_epoch();
1484 log_error_errno(r
, "Current system time is before build time, but cannot correct: %m");
1486 log_info("System time before build time, advancing clock.");
1489 static void initialize_coredump(bool skip_setup
) {
1491 if (getpid_cached() != 1)
1494 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1495 * will process core dumps for system services by default. */
1496 if (setrlimit(RLIMIT_CORE
, &RLIMIT_MAKE_CONST(RLIM_INFINITY
)) < 0)
1497 log_warning_errno(errno
, "Failed to set RLIMIT_CORE: %m");
1499 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1500 * until the systemd-coredump tool is enabled via sysctl. */
1502 disable_coredumps();
1505 static void do_reexecute(
1508 const struct rlimit
*saved_rlimit_nofile
,
1509 const struct rlimit
*saved_rlimit_memlock
,
1511 const char *switch_root_dir
,
1512 const char *switch_root_init
,
1513 const char **ret_error_message
) {
1515 unsigned i
, j
, args_size
;
1519 assert(saved_rlimit_nofile
);
1520 assert(saved_rlimit_memlock
);
1521 assert(ret_error_message
);
1523 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1525 watchdog_close(true);
1527 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1528 * child processes */
1530 if (saved_rlimit_nofile
->rlim_cur
> 0)
1531 (void) setrlimit(RLIMIT_NOFILE
, saved_rlimit_nofile
);
1532 if (saved_rlimit_memlock
->rlim_cur
!= (rlim_t
) -1)
1533 (void) setrlimit(RLIMIT_MEMLOCK
, saved_rlimit_memlock
);
1535 if (switch_root_dir
) {
1536 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1537 * SIGCHLD for them after deserializing. */
1538 broadcast_signal(SIGTERM
, false, true, arg_default_timeout_stop_usec
);
1540 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1541 r
= switch_root(switch_root_dir
, "/mnt", true, MS_MOVE
);
1543 log_error_errno(r
, "Failed to switch root, trying to continue: %m");
1546 args_size
= MAX(6, argc
+1);
1547 args
= newa(const char*, args_size
);
1549 if (!switch_root_init
) {
1550 char sfd
[DECIMAL_STR_MAX(int) + 1];
1552 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1553 * the user didn't specify an explicit init to spawn. */
1555 assert(arg_serialization
);
1558 xsprintf(sfd
, "%i", fileno(arg_serialization
));
1561 args
[i
++] = SYSTEMD_BINARY_PATH
;
1562 if (switch_root_dir
)
1563 args
[i
++] = "--switched-root";
1564 args
[i
++] = arg_system
? "--system" : "--user";
1565 args
[i
++] = "--deserialize";
1569 assert(i
<= args_size
);
1572 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1573 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1574 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1575 * before proceeding into the exec().
1577 valgrind_summary_hack();
1579 (void) execv(args
[0], (char* const*) args
);
1580 log_debug_errno(errno
, "Failed to execute our own binary, trying fallback: %m");
1583 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1584 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1585 * doesn't matter.) */
1587 arg_serialization
= safe_fclose(arg_serialization
);
1588 fds
= fdset_free(fds
);
1590 /* Reopen the console */
1591 (void) make_console_stdio();
1593 for (j
= 1, i
= 1; j
< (unsigned) argc
; j
++)
1594 args
[i
++] = argv
[j
];
1596 assert(i
<= args_size
);
1598 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1599 (void) reset_all_signal_handlers();
1600 (void) reset_signal_mask();
1602 if (switch_root_init
) {
1603 args
[0] = switch_root_init
;
1604 (void) execv(args
[0], (char* const*) args
);
1605 log_warning_errno(errno
, "Failed to execute configured init, trying fallback: %m");
1608 args
[0] = "/sbin/init";
1609 (void) execv(args
[0], (char* const*) args
);
1612 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
1613 ANSI_HIGHLIGHT_RED
" !! " ANSI_NORMAL
,
1614 "Failed to execute /sbin/init");
1617 log_warning("No /sbin/init, trying fallback");
1619 args
[0] = "/bin/sh";
1621 (void) execv(args
[0], (char* const*) args
);
1622 log_error_errno(errno
, "Failed to execute /bin/sh, giving up: %m");
1624 log_warning_errno(r
, "Failed to execute /sbin/init, giving up: %m");
1626 *ret_error_message
= "Failed to execute fallback shell";
1629 static int invoke_main_loop(
1631 bool *ret_reexecute
,
1632 int *ret_retval
, /* Return parameters relevant for shutting down */
1633 const char **ret_shutdown_verb
, /* … */
1634 FDSet
**ret_fds
, /* Return parameters for reexecuting */
1635 char **ret_switch_root_dir
, /* … */
1636 char **ret_switch_root_init
, /* … */
1637 const char **ret_error_message
) {
1642 assert(ret_reexecute
);
1644 assert(ret_shutdown_verb
);
1646 assert(ret_switch_root_dir
);
1647 assert(ret_switch_root_init
);
1648 assert(ret_error_message
);
1651 r
= manager_loop(m
);
1653 *ret_error_message
= "Failed to run main loop";
1654 return log_emergency_errno(r
, "Failed to run main loop: %m");
1657 switch (m
->exit_code
) {
1659 case MANAGER_RELOAD
:
1660 log_info("Reloading.");
1662 r
= parse_config_file();
1664 log_warning_errno(r
, "Failed to parse config file, ignoring: %m");
1666 set_manager_defaults(m
);
1668 r
= manager_reload(m
);
1670 log_warning_errno(r
, "Failed to reload, ignoring: %m");
1674 case MANAGER_REEXECUTE
:
1676 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, false);
1678 *ret_error_message
= "Failed to prepare for reexecution";
1682 log_notice("Reexecuting.");
1684 *ret_reexecute
= true;
1685 *ret_retval
= EXIT_SUCCESS
;
1686 *ret_shutdown_verb
= NULL
;
1687 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1691 case MANAGER_SWITCH_ROOT
:
1692 if (!m
->switch_root_init
) {
1693 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, true);
1695 *ret_error_message
= "Failed to prepare for reexecution";
1701 log_notice("Switching root.");
1703 *ret_reexecute
= true;
1704 *ret_retval
= EXIT_SUCCESS
;
1705 *ret_shutdown_verb
= NULL
;
1707 /* Steal the switch root parameters */
1708 *ret_switch_root_dir
= m
->switch_root
;
1709 *ret_switch_root_init
= m
->switch_root_init
;
1710 m
->switch_root
= m
->switch_root_init
= NULL
;
1716 if (MANAGER_IS_USER(m
)) {
1719 *ret_reexecute
= false;
1720 *ret_retval
= m
->return_value
;
1721 *ret_shutdown_verb
= NULL
;
1723 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1729 case MANAGER_REBOOT
:
1730 case MANAGER_POWEROFF
:
1732 case MANAGER_KEXEC
: {
1733 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1734 [MANAGER_EXIT
] = "exit",
1735 [MANAGER_REBOOT
] = "reboot",
1736 [MANAGER_POWEROFF
] = "poweroff",
1737 [MANAGER_HALT
] = "halt",
1738 [MANAGER_KEXEC
] = "kexec"
1741 log_notice("Shutting down.");
1743 *ret_reexecute
= false;
1744 *ret_retval
= m
->return_value
;
1745 assert_se(*ret_shutdown_verb
= table
[m
->exit_code
]);
1747 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1753 assert_not_reached("Unknown exit code.");
1758 static void log_execution_mode(bool *ret_first_boot
) {
1759 assert(ret_first_boot
);
1764 log_info(PACKAGE_STRING
" running in %ssystem mode. (" SYSTEMD_FEATURES
")",
1765 arg_action
== ACTION_TEST
? "test " : "" );
1767 v
= detect_virtualization();
1769 log_info("Detected virtualization %s.", virtualization_to_string(v
));
1771 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1774 *ret_first_boot
= false;
1775 log_info("Running in initial RAM disk.");
1777 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1778 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1779 * doesn't it's unpopulated. This allows container managers and installers to provision a
1780 * couple of files already. If the container manager wants to provision the machine ID itself
1781 * it should pass $container_uuid to PID 1. */
1783 *ret_first_boot
= access("/etc/machine-id", F_OK
) < 0;
1784 if (*ret_first_boot
)
1785 log_info("Running with unpopulated /etc.");
1788 if (DEBUG_LOGGING
) {
1789 _cleanup_free_
char *t
;
1791 t
= uid_to_name(getuid());
1792 log_debug(PACKAGE_STRING
" running in %suser mode for user " UID_FMT
"/%s. (" SYSTEMD_FEATURES
")",
1793 arg_action
== ACTION_TEST
? " test" : "", getuid(), strna(t
));
1796 *ret_first_boot
= false;
1800 static int initialize_runtime(
1802 struct rlimit
*saved_rlimit_nofile
,
1803 struct rlimit
*saved_rlimit_memlock
,
1804 const char **ret_error_message
) {
1808 assert(ret_error_message
);
1810 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1812 * - Some only apply to --system instances
1813 * - Some only apply to --user instances
1814 * - Some only apply when we first start up, but not when we reexecute
1817 if (arg_action
!= ACTION_RUN
)
1821 /* Make sure we leave a core dump without panicing the kernel. */
1822 install_crash_handler();
1825 r
= mount_cgroup_controllers(arg_join_controllers
);
1827 *ret_error_message
= "Failed to mount cgroup hierarchies";
1833 machine_id_setup(NULL
, arg_machine_id
, NULL
);
1835 bump_unix_max_dgram_qlen();
1837 write_container_id();
1840 if (arg_watchdog_device
) {
1841 r
= watchdog_set_device(arg_watchdog_device
);
1843 log_warning_errno(r
, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device
);
1846 if (arg_runtime_watchdog
> 0 && arg_runtime_watchdog
!= USEC_INFINITY
)
1847 watchdog_set_timeout(&arg_runtime_watchdog
);
1850 if (arg_timer_slack_nsec
!= NSEC_INFINITY
)
1851 if (prctl(PR_SET_TIMERSLACK
, arg_timer_slack_nsec
) < 0)
1852 log_warning_errno(errno
, "Failed to adjust timer slack, ignoring: %m");
1854 if (arg_system
&& !cap_test_all(arg_capability_bounding_set
)) {
1855 r
= capability_bounding_set_drop_usermode(arg_capability_bounding_set
);
1857 *ret_error_message
= "Failed to drop capability bounding set of usermode helpers";
1858 return log_emergency_errno(r
, "Failed to drop capability bounding set of usermode helpers: %m");
1861 r
= capability_bounding_set_drop(arg_capability_bounding_set
, true);
1863 *ret_error_message
= "Failed to drop capability bounding set";
1864 return log_emergency_errno(r
, "Failed to drop capability bounding set: %m");
1868 if (arg_syscall_archs
) {
1869 r
= enforce_syscall_archs(arg_syscall_archs
);
1871 *ret_error_message
= "Failed to set syscall architectures";
1877 /* Become reaper of our children */
1878 if (prctl(PR_SET_CHILD_SUBREAPER
, 1) < 0)
1879 log_warning_errno(errno
, "Failed to make us a subreaper: %m");
1882 /* Bump up RLIMIT_NOFILE for systemd itself */
1883 (void) bump_rlimit_nofile(saved_rlimit_nofile
);
1884 (void) bump_rlimit_memlock(saved_rlimit_memlock
);
1890 static int do_queue_default_job(
1892 const char **ret_error_message
) {
1894 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1895 Job
*default_unit_job
;
1896 Unit
*target
= NULL
;
1899 log_debug("Activating default unit: %s", arg_default_unit
);
1901 r
= manager_load_unit(m
, arg_default_unit
, NULL
, &error
, &target
);
1903 log_error("Failed to load default target: %s", bus_error_message(&error
, r
));
1904 else if (IN_SET(target
->load_state
, UNIT_ERROR
, UNIT_NOT_FOUND
))
1905 log_error_errno(target
->load_error
, "Failed to load default target: %m");
1906 else if (target
->load_state
== UNIT_MASKED
)
1907 log_error("Default target masked.");
1909 if (!target
|| target
->load_state
!= UNIT_LOADED
) {
1910 log_info("Trying to load rescue target...");
1912 r
= manager_load_unit(m
, SPECIAL_RESCUE_TARGET
, NULL
, &error
, &target
);
1914 *ret_error_message
= "Failed to load rescue target";
1915 return log_emergency_errno(r
, "Failed to load rescue target: %s", bus_error_message(&error
, r
));
1916 } else if (IN_SET(target
->load_state
, UNIT_ERROR
, UNIT_NOT_FOUND
)) {
1917 *ret_error_message
= "Failed to load rescue target";
1918 return log_emergency_errno(target
->load_error
, "Failed to load rescue target: %m");
1919 } else if (target
->load_state
== UNIT_MASKED
) {
1920 *ret_error_message
= "Rescue target masked";
1921 log_emergency("Rescue target masked.");
1926 assert(target
->load_state
== UNIT_LOADED
);
1928 r
= manager_add_job(m
, JOB_START
, target
, JOB_ISOLATE
, &error
, &default_unit_job
);
1930 log_debug_errno(r
, "Default target could not be isolated, starting instead: %s", bus_error_message(&error
, r
));
1932 sd_bus_error_free(&error
);
1934 r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, &error
, &default_unit_job
);
1936 *ret_error_message
= "Failed to start default target";
1937 return log_emergency_errno(r
, "Failed to start default target: %s", bus_error_message(&error
, r
));
1941 *ret_error_message
= "Failed to isolate default target";
1942 return log_emergency_errno(r
, "Failed to isolate default target: %s", bus_error_message(&error
, r
));
1945 m
->default_unit_job_id
= default_unit_job
->id
;
1950 static void free_arguments(void) {
1953 /* Frees all arg_* variables, with the exception of arg_serialization */
1955 for (j
= 0; j
< ELEMENTSOF(arg_default_rlimit
); j
++)
1956 arg_default_rlimit
[j
] = mfree(arg_default_rlimit
[j
]);
1958 arg_default_unit
= mfree(arg_default_unit
);
1959 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
1960 arg_join_controllers
= strv_free_free(arg_join_controllers
);
1961 arg_default_environment
= strv_free(arg_default_environment
);
1962 arg_syscall_archs
= set_free(arg_syscall_archs
);
1965 static int load_configuration(int argc
, char **argv
, const char **ret_error_message
) {
1968 assert(ret_error_message
);
1970 arg_default_tasks_max
= system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE
, 100U);
1972 r
= parse_config_file();
1974 *ret_error_message
= "Failed to parse config file";
1979 r
= proc_cmdline_parse(parse_proc_cmdline_item
, NULL
, 0);
1981 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
1984 /* Note that this also parses bits from the kernel command line, including "debug". */
1985 log_parse_environment();
1987 r
= parse_argv(argc
, argv
);
1989 *ret_error_message
= "Failed to parse commandline arguments";
1993 /* Initialize default unit */
1994 if (!arg_default_unit
) {
1995 arg_default_unit
= strdup(SPECIAL_DEFAULT_TARGET
);
1996 if (!arg_default_unit
) {
1997 *ret_error_message
= "Failed to set default unit";
2002 /* Initialize the show status setting if it hasn't been set explicitly yet */
2003 if (arg_show_status
== _SHOW_STATUS_UNSET
)
2004 arg_show_status
= SHOW_STATUS_YES
;
2009 static int safety_checks(void) {
2011 if (getpid_cached() == 1 &&
2012 arg_action
!= ACTION_RUN
) {
2013 log_error("Unsupported execution mode while PID 1.");
2017 if (getpid_cached() == 1 &&
2019 log_error("Can't run --user mode as PID 1.");
2023 if (arg_action
== ACTION_RUN
&&
2025 getpid_cached() != 1) {
2026 log_error("Can't run system mode unless PID 1.");
2030 if (arg_action
== ACTION_TEST
&&
2032 log_error("Don't run test mode as root.");
2037 arg_action
== ACTION_RUN
&&
2039 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2044 arg_action
== ACTION_RUN
&&
2045 !getenv("XDG_RUNTIME_DIR")) {
2046 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2051 arg_action
== ACTION_RUN
&&
2052 running_in_chroot() > 0) {
2053 log_error("Cannot be run in a chroot() environment.");
2060 static int initialize_security(
2061 bool *loaded_policy
,
2062 dual_timestamp
*security_start_timestamp
,
2063 dual_timestamp
*security_finish_timestamp
,
2064 const char **ret_error_message
) {
2068 assert(loaded_policy
);
2069 assert(security_start_timestamp
);
2070 assert(security_finish_timestamp
);
2071 assert(ret_error_message
);
2073 dual_timestamp_get(security_start_timestamp
);
2075 r
= mac_selinux_setup(loaded_policy
);
2077 *ret_error_message
= "Failed to load SELinux policy";
2081 r
= mac_smack_setup(loaded_policy
);
2083 *ret_error_message
= "Failed to load SMACK policy";
2089 *ret_error_message
= "Failed to load IMA policy";
2093 dual_timestamp_get(security_finish_timestamp
);
2097 static void test_summary(Manager
*m
) {
2100 printf("-> By units:\n");
2101 manager_dump_units(m
, stdout
, "\t");
2103 printf("-> By jobs:\n");
2104 manager_dump_jobs(m
, stdout
, "\t");
2107 static int collect_fds(FDSet
**ret_fds
, const char **ret_error_message
) {
2111 assert(ret_error_message
);
2113 r
= fdset_new_fill(ret_fds
);
2115 *ret_error_message
= "Failed to allocate fd set";
2116 return log_emergency_errno(r
, "Failed to allocate fd set: %m");
2119 fdset_cloexec(*ret_fds
, true);
2121 if (arg_serialization
)
2122 assert_se(fdset_remove(*ret_fds
, fileno(arg_serialization
)) >= 0);
2127 static void setup_console_terminal(bool skip_setup
) {
2132 /* Become a session leader if we aren't one yet. */
2135 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2137 (void) release_terminal();
2139 /* Reset the console, but only if this is really init and we are freshly booted */
2140 if (getpid_cached() == 1 && !skip_setup
)
2141 (void) console_setup();
2144 static bool early_skip_setup_check(int argc
, char *argv
[]) {
2145 bool found_deserialize
= false;
2148 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2149 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2150 * anyway, even if in that case we also do deserialization. */
2152 for (i
= 1; i
< argc
; i
++) {
2154 if (streq(argv
[i
], "--switched-root"))
2155 return false; /* If we switched root, don't skip the setup. */
2156 else if (streq(argv
[i
], "--deserialize"))
2157 found_deserialize
= true;
2160 return found_deserialize
; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2163 int main(int argc
, char *argv
[]) {
2165 dual_timestamp initrd_timestamp
= DUAL_TIMESTAMP_NULL
, userspace_timestamp
= DUAL_TIMESTAMP_NULL
, kernel_timestamp
= DUAL_TIMESTAMP_NULL
,
2166 security_start_timestamp
= DUAL_TIMESTAMP_NULL
, security_finish_timestamp
= DUAL_TIMESTAMP_NULL
;
2167 struct rlimit saved_rlimit_nofile
= RLIMIT_MAKE_CONST(0), saved_rlimit_memlock
= RLIMIT_MAKE_CONST((rlim_t
) -1);
2168 bool skip_setup
, loaded_policy
= false, queue_default_job
= false, first_boot
= false, reexecute
= false;
2169 char *switch_root_dir
= NULL
, *switch_root_init
= NULL
;
2170 usec_t before_startup
, after_startup
;
2171 static char systemd
[] = "systemd";
2172 char timespan
[FORMAT_TIMESPAN_MAX
];
2173 const char *shutdown_verb
= NULL
, *error_message
= NULL
;
2174 int r
, retval
= EXIT_FAILURE
;
2178 /* SysV compatibility: redirect init → telinit */
2179 redirect_telinit(argc
, argv
);
2181 /* Take timestamps early on */
2182 dual_timestamp_from_monotonic(&kernel_timestamp
, 0);
2183 dual_timestamp_get(&userspace_timestamp
);
2185 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2187 skip_setup
= early_skip_setup_check(argc
, argv
);
2189 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2190 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
2191 program_invocation_short_name
= systemd
;
2192 (void) prctl(PR_SET_NAME
, systemd
);
2194 /* Save the original command line */
2198 /* Make sure that if the user says "syslog" we actually log to the journal. */
2199 log_set_upgrade_syslog_to_journal(true);
2201 if (getpid_cached() == 1) {
2202 /* Disable the umask logic */
2205 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be activated
2206 * yet (even though the log socket for it exists). */
2207 log_set_prohibit_ipc(true);
2209 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2210 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2211 * child process right before execve()'ing the actual binary, at a point in time where socket
2212 * activation stderr/stdout area already set up. */
2213 log_set_always_reopen_console(true);
2216 if (getpid_cached() == 1 && detect_container() <= 0) {
2218 /* Running outside of a container as PID 1 */
2220 log_set_target(LOG_TARGET_KMSG
);
2224 initrd_timestamp
= userspace_timestamp
;
2227 r
= mount_setup_early();
2229 error_message
= "Failed to mount early API filesystems";
2233 r
= initialize_security(
2235 &security_start_timestamp
,
2236 &security_finish_timestamp
,
2242 if (mac_selinux_init() < 0) {
2243 error_message
= "Failed to initialize SELinux policy";
2250 /* Set the default for later on, but don't actually
2251 * open the logs like this for now. Note that if we
2252 * are transitioning from the initrd there might still
2253 * be journal fd open, and we shouldn't attempt
2254 * opening that before we parsed /proc/cmdline which
2255 * might redirect output elsewhere. */
2256 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
2258 } else if (getpid_cached() == 1) {
2259 /* Running inside a container, as PID 1 */
2261 log_set_target(LOG_TARGET_CONSOLE
);
2264 /* For later on, see above... */
2265 log_set_target(LOG_TARGET_JOURNAL
);
2267 /* clear the kernel timestamp,
2268 * because we are in a container */
2269 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2271 /* Running as user instance */
2273 log_set_target(LOG_TARGET_AUTO
);
2276 /* clear the kernel timestamp,
2277 * because we are not PID 1 */
2278 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2281 initialize_coredump(skip_setup
);
2283 r
= fixup_environment();
2285 log_emergency_errno(r
, "Failed to fix up PID 1 environment: %m");
2286 error_message
= "Failed to fix up PID1 environment";
2292 /* Try to figure out if we can use colors with the console. No
2293 * need to do that for user instances since they never log
2294 * into the console. */
2295 log_show_color(colors_enabled());
2296 r
= make_null_stdio();
2298 log_warning_errno(r
, "Failed to redirect standard streams to /dev/null: %m");
2301 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2302 * /proc/$PID/fd is available. */
2303 if (getpid_cached() == 1) {
2305 /* Load the kernel modules early. */
2309 r
= mount_setup(loaded_policy
);
2311 error_message
= "Failed to mount API filesystems";
2316 /* Reset all signal handlers. */
2317 (void) reset_all_signal_handlers();
2318 (void) ignore_signals(SIGNALS_IGNORE
, -1);
2320 r
= load_configuration(argc
, argv
, &error_message
);
2324 r
= safety_checks();
2328 if (IN_SET(arg_action
, ACTION_TEST
, ACTION_HELP
, ACTION_DUMP_CONFIGURATION_ITEMS
))
2329 (void) pager_open(arg_no_pager
, false);
2331 if (arg_action
!= ACTION_RUN
)
2334 if (arg_action
== ACTION_HELP
) {
2337 } else if (arg_action
== ACTION_VERSION
) {
2340 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
2341 unit_dump_config_items(stdout
);
2342 retval
= EXIT_SUCCESS
;
2346 assert_se(IN_SET(arg_action
, ACTION_RUN
, ACTION_TEST
));
2348 /* Move out of the way, so that we won't block unmounts */
2349 assert_se(chdir("/") == 0);
2351 if (arg_action
== ACTION_RUN
) {
2353 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
2356 /* Remember open file descriptors for later deserialization */
2357 r
= collect_fds(&fds
, &error_message
);
2361 /* Give up any control of the console, but make sure its initialized. */
2362 setup_console_terminal(skip_setup
);
2364 /* Open the logging devices, if possible and necessary */
2368 log_execution_mode(&first_boot
);
2370 r
= initialize_runtime(skip_setup
,
2371 &saved_rlimit_nofile
,
2372 &saved_rlimit_memlock
,
2377 r
= manager_new(arg_system
? UNIT_FILE_SYSTEM
: UNIT_FILE_USER
,
2378 arg_action
== ACTION_TEST
? MANAGER_TEST_FULL
: 0,
2381 log_emergency_errno(r
, "Failed to allocate manager object: %m");
2382 error_message
= "Failed to allocate manager object";
2386 m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
] = kernel_timestamp
;
2387 m
->timestamps
[MANAGER_TIMESTAMP_INITRD
] = initrd_timestamp
;
2388 m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
] = userspace_timestamp
;
2389 m
->timestamps
[MANAGER_TIMESTAMP_SECURITY_START
] = security_start_timestamp
;
2390 m
->timestamps
[MANAGER_TIMESTAMP_SECURITY_FINISH
] = security_finish_timestamp
;
2392 set_manager_defaults(m
);
2393 set_manager_settings(m
);
2394 manager_set_first_boot(m
, first_boot
);
2396 /* Remember whether we should queue the default job */
2397 queue_default_job
= !arg_serialization
|| arg_switched_root
;
2399 before_startup
= now(CLOCK_MONOTONIC
);
2401 r
= manager_startup(m
, arg_serialization
, fds
);
2403 log_error_errno(r
, "Failed to fully start up daemon: %m");
2404 error_message
= "Failed to start up manager";
2408 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2409 fds
= fdset_free(fds
);
2410 arg_serialization
= safe_fclose(arg_serialization
);
2412 if (queue_default_job
) {
2413 r
= do_queue_default_job(m
, &error_message
);
2418 after_startup
= now(CLOCK_MONOTONIC
);
2420 log_full(arg_action
== ACTION_TEST
? LOG_INFO
: LOG_DEBUG
,
2421 "Loaded units and determined initial transaction in %s.",
2422 format_timespan(timespan
, sizeof(timespan
), after_startup
- before_startup
, 100 * USEC_PER_MSEC
));
2424 if (arg_action
== ACTION_TEST
) {
2426 retval
= EXIT_SUCCESS
;
2430 (void) invoke_main_loop(m
,
2443 arg_shutdown_watchdog
= m
->shutdown_watchdog
;
2445 m
= manager_free(m
);
2448 mac_selinux_finish();
2451 do_reexecute(argc
, argv
,
2452 &saved_rlimit_nofile
,
2453 &saved_rlimit_memlock
,
2457 &error_message
); /* This only returns if reexecution failed */
2459 arg_serialization
= safe_fclose(arg_serialization
);
2460 fds
= fdset_free(fds
);
2462 #if HAVE_VALGRIND_VALGRIND_H
2463 /* If we are PID 1 and running under valgrind, then let's exit
2464 * here explicitly. valgrind will only generate nice output on
2465 * exit(), not on exec(), hence let's do the former not the
2467 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND
) {
2468 /* Cleanup watchdog_device strings for valgrind. We need them
2469 * in become_shutdown() so normally we cannot free them yet. */
2470 watchdog_free_device();
2471 arg_watchdog_device
= mfree(arg_watchdog_device
);
2476 if (shutdown_verb
) {
2477 r
= become_shutdown(shutdown_verb
, retval
);
2479 log_error_errno(r
, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
2480 error_message
= "Failed to execute shutdown binary";
2483 watchdog_free_device();
2484 arg_watchdog_device
= mfree(arg_watchdog_device
);
2486 if (getpid_cached() == 1) {
2488 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
2489 ANSI_HIGHLIGHT_RED
"!!!!!!" ANSI_NORMAL
,
2490 "%s, freezing.", error_message
);