1 /* SPDX-License-Identifier: LGPL-2.1+ */
10 #include <sys/prctl.h>
11 #include <sys/reboot.h>
17 #if HAVE_VALGRIND_VALGRIND_H
18 #include <valgrind/valgrind.h>
22 #include "sd-daemon.h"
23 #include "sd-messages.h"
25 #include "alloc-util.h"
26 #include "architecture.h"
28 #include "bus-error.h"
30 #include "capability-util.h"
31 #include "clock-util.h"
32 #include "conf-parser.h"
33 #include "cpu-set-util.h"
35 #include "dbus-manager.h"
37 #include "emergency-action.h"
39 #include "exit-status.h"
43 #include "format-util.h"
45 #include "hostname-setup.h"
46 #include "ima-setup.h"
48 #include "kmod-setup.h"
49 #include "load-fragment.h"
51 #include "loopback-setup.h"
52 #include "machine-id-setup.h"
55 #include "mount-setup.h"
58 #include "parse-util.h"
59 #include "path-util.h"
60 #include "proc-cmdline.h"
61 #include "process-util.h"
62 #include "raw-clone.h"
63 #include "rlimit-util.h"
65 #include "seccomp-util.h"
67 #include "selinux-setup.h"
68 #include "selinux-util.h"
69 #include "signal-util.h"
70 #include "smack-setup.h"
72 #include "stat-util.h"
73 #include "stdio-util.h"
75 #include "switch-root.h"
76 #include "terminal-util.h"
77 #include "umask-util.h"
78 #include "user-util.h"
88 ACTION_DUMP_CONFIGURATION_ITEMS
,
89 ACTION_DUMP_BUS_PROPERTIES
,
90 } arg_action
= ACTION_RUN
;
91 static char *arg_default_unit
= NULL
;
92 static bool arg_system
= false;
93 static bool arg_dump_core
= true;
94 static int arg_crash_chvt
= -1;
95 static bool arg_crash_shell
= false;
96 static bool arg_crash_reboot
= false;
97 static char *arg_confirm_spawn
= NULL
;
98 static ShowStatus arg_show_status
= _SHOW_STATUS_UNSET
;
99 static bool arg_switched_root
= false;
100 static bool arg_no_pager
= false;
101 static bool arg_service_watchdogs
= true;
102 static char ***arg_join_controllers
= NULL
;
103 static ExecOutput arg_default_std_output
= EXEC_OUTPUT_JOURNAL
;
104 static ExecOutput arg_default_std_error
= EXEC_OUTPUT_INHERIT
;
105 static usec_t arg_default_restart_usec
= DEFAULT_RESTART_USEC
;
106 static usec_t arg_default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
;
107 static usec_t arg_default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
;
108 static usec_t arg_default_start_limit_interval
= DEFAULT_START_LIMIT_INTERVAL
;
109 static unsigned arg_default_start_limit_burst
= DEFAULT_START_LIMIT_BURST
;
110 static usec_t arg_runtime_watchdog
= 0;
111 static usec_t arg_shutdown_watchdog
= 10 * USEC_PER_MINUTE
;
112 static char *arg_watchdog_device
= NULL
;
113 static char **arg_default_environment
= NULL
;
114 static struct rlimit
*arg_default_rlimit
[_RLIMIT_MAX
] = {};
115 static uint64_t arg_capability_bounding_set
= CAP_ALL
;
116 static bool arg_no_new_privs
= false;
117 static nsec_t arg_timer_slack_nsec
= NSEC_INFINITY
;
118 static usec_t arg_default_timer_accuracy_usec
= 1 * USEC_PER_MINUTE
;
119 static Set
* arg_syscall_archs
= NULL
;
120 static FILE* arg_serialization
= NULL
;
121 static bool arg_default_cpu_accounting
= false;
122 static bool arg_default_io_accounting
= false;
123 static bool arg_default_ip_accounting
= false;
124 static bool arg_default_blockio_accounting
= false;
125 static bool arg_default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
;
126 static bool arg_default_tasks_accounting
= true;
127 static uint64_t arg_default_tasks_max
= UINT64_MAX
;
128 static sd_id128_t arg_machine_id
= {};
129 static EmergencyAction arg_cad_burst_action
= EMERGENCY_ACTION_REBOOT_FORCE
;
131 _noreturn_
static void freeze_or_reboot(void) {
133 if (arg_crash_reboot
) {
134 log_notice("Rebooting in 10s...");
137 log_notice("Rebooting now...");
138 (void) reboot(RB_AUTOBOOT
);
139 log_emergency_errno(errno
, "Failed to reboot: %m");
142 log_emergency("Freezing execution.");
146 _noreturn_
static void crash(int sig
) {
150 if (getpid_cached() != 1)
151 /* Pass this on immediately, if this is not PID 1 */
153 else if (!arg_dump_core
)
154 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig
));
156 sa
= (struct sigaction
) {
157 .sa_handler
= nop_signal_handler
,
158 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
161 /* We want to wait for the core process, hence let's enable SIGCHLD */
162 (void) sigaction(SIGCHLD
, &sa
, NULL
);
164 pid
= raw_clone(SIGCHLD
);
166 log_emergency_errno(errno
, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig
));
168 /* Enable default signal handler for core dump */
170 sa
= (struct sigaction
) {
171 .sa_handler
= SIG_DFL
,
173 (void) sigaction(sig
, &sa
, NULL
);
175 /* Don't limit the coredump size */
176 (void) setrlimit(RLIMIT_CORE
, &RLIMIT_MAKE_CONST(RLIM_INFINITY
));
178 /* Just to be sure... */
181 /* Raise the signal again */
183 (void) kill(pid
, sig
); /* raise() would kill the parent */
185 assert_not_reached("We shouldn't be here...");
191 /* Order things nicely. */
192 r
= wait_for_terminate(pid
, &status
);
194 log_emergency_errno(r
, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig
));
195 else if (status
.si_code
!= CLD_DUMPED
)
196 log_emergency("Caught <%s>, core dump failed (child "PID_FMT
", code=%s, status=%i/%s).",
197 signal_to_string(sig
),
198 pid
, sigchld_code_to_string(status
.si_code
),
200 strna(status
.si_code
== CLD_EXITED
201 ? exit_status_to_string(status
.si_status
, EXIT_STATUS_MINIMAL
)
202 : signal_to_string(status
.si_status
)));
204 log_emergency("Caught <%s>, dumped core as pid "PID_FMT
".", signal_to_string(sig
), pid
);
208 if (arg_crash_chvt
>= 0)
209 (void) chvt(arg_crash_chvt
);
211 sa
= (struct sigaction
) {
212 .sa_handler
= SIG_IGN
,
213 .sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
,
216 /* Let the kernel reap children for us */
217 (void) sigaction(SIGCHLD
, &sa
, NULL
);
219 if (arg_crash_shell
) {
220 log_notice("Executing crash shell in 10s...");
223 pid
= raw_clone(SIGCHLD
);
225 log_emergency_errno(errno
, "Failed to fork off crash shell: %m");
228 (void) make_console_stdio();
229 (void) execle("/bin/sh", "/bin/sh", NULL
, environ
);
231 log_emergency_errno(errno
, "execle() failed: %m");
234 log_info("Spawned crash shell as PID "PID_FMT
".", pid
);
235 (void) wait_for_terminate(pid
, NULL
);
242 static void install_crash_handler(void) {
243 static const struct sigaction sa
= {
245 .sa_flags
= SA_NODEFER
, /* So that we can raise the signal again from the signal handler */
249 /* We ignore the return value here, since, we don't mind if we
250 * cannot set up a crash handler */
251 r
= sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
253 log_debug_errno(r
, "I had trouble setting up the crash handler, ignoring: %m");
256 static int console_setup(void) {
257 _cleanup_close_
int tty_fd
= -1;
260 tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
);
262 return log_error_errno(tty_fd
, "Failed to open /dev/console: %m");
264 /* We don't want to force text mode. plymouth may be showing
265 * pictures already from initrd. */
266 r
= reset_terminal_fd(tty_fd
, false);
268 return log_error_errno(r
, "Failed to reset /dev/console: %m");
273 static int parse_crash_chvt(const char *value
) {
276 if (safe_atoi(value
, &arg_crash_chvt
) >= 0)
279 b
= parse_boolean(value
);
284 arg_crash_chvt
= 0; /* switch to where kmsg goes */
286 arg_crash_chvt
= -1; /* turn off switching */
291 static int parse_confirm_spawn(const char *value
, char **console
) {
295 r
= value
? parse_boolean(value
) : 1;
301 if (r
> 0) /* on with default tty */
302 s
= strdup("/dev/console");
303 else if (is_path(value
)) /* on with fully qualified path */
305 else /* on with only a tty file name, not a fully qualified path */
306 s
= strjoin("/dev/", value
);
314 static int set_machine_id(const char *m
) {
318 if (sd_id128_from_string(m
, &t
) < 0)
321 if (sd_id128_is_null(t
))
328 static int parse_proc_cmdline_item(const char *key
, const char *value
, void *data
) {
334 if (STR_IN_SET(key
, "systemd.unit", "rd.systemd.unit")) {
336 if (proc_cmdline_value_missing(key
, value
))
339 if (!unit_name_is_valid(value
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
340 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key
, value
);
341 else if (in_initrd() == !!startswith(key
, "rd.")) {
342 if (free_and_strdup(&arg_default_unit
, value
) < 0)
346 } else if (proc_cmdline_key_streq(key
, "systemd.dump_core")) {
348 r
= value
? parse_boolean(value
) : true;
350 log_warning("Failed to parse dump core switch %s. Ignoring.", value
);
354 } else if (proc_cmdline_key_streq(key
, "systemd.crash_chvt")) {
357 arg_crash_chvt
= 0; /* turn on */
358 else if (parse_crash_chvt(value
) < 0)
359 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value
);
361 } else if (proc_cmdline_key_streq(key
, "systemd.crash_shell")) {
363 r
= value
? parse_boolean(value
) : true;
365 log_warning("Failed to parse crash shell switch %s. Ignoring.", value
);
369 } else if (proc_cmdline_key_streq(key
, "systemd.crash_reboot")) {
371 r
= value
? parse_boolean(value
) : true;
373 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value
);
375 arg_crash_reboot
= r
;
377 } else if (proc_cmdline_key_streq(key
, "systemd.confirm_spawn")) {
380 r
= parse_confirm_spawn(value
, &s
);
382 log_warning_errno(r
, "Failed to parse confirm_spawn switch %s. Ignoring.", value
);
384 free(arg_confirm_spawn
);
385 arg_confirm_spawn
= s
;
388 } else if (proc_cmdline_key_streq(key
, "systemd.service_watchdogs")) {
390 r
= value
? parse_boolean(value
) : true;
392 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value
);
394 arg_service_watchdogs
= r
;
396 } else if (proc_cmdline_key_streq(key
, "systemd.show_status")) {
399 r
= parse_show_status(value
, &arg_show_status
);
401 log_warning("Failed to parse show status switch %s. Ignoring.", value
);
403 arg_show_status
= SHOW_STATUS_YES
;
405 } else if (proc_cmdline_key_streq(key
, "systemd.default_standard_output")) {
407 if (proc_cmdline_value_missing(key
, value
))
410 r
= exec_output_from_string(value
);
412 log_warning("Failed to parse default standard output switch %s. Ignoring.", value
);
414 arg_default_std_output
= r
;
416 } else if (proc_cmdline_key_streq(key
, "systemd.default_standard_error")) {
418 if (proc_cmdline_value_missing(key
, value
))
421 r
= exec_output_from_string(value
);
423 log_warning("Failed to parse default standard error switch %s. Ignoring.", value
);
425 arg_default_std_error
= r
;
427 } else if (streq(key
, "systemd.setenv")) {
429 if (proc_cmdline_value_missing(key
, value
))
432 if (env_assignment_is_valid(value
)) {
435 env
= strv_env_set(arg_default_environment
, value
);
439 arg_default_environment
= env
;
441 log_warning("Environment variable name '%s' is not valid. Ignoring.", value
);
443 } else if (proc_cmdline_key_streq(key
, "systemd.machine_id")) {
445 if (proc_cmdline_value_missing(key
, value
))
448 r
= set_machine_id(value
);
450 log_warning("MachineID '%s' is not valid. Ignoring.", value
);
452 } else if (proc_cmdline_key_streq(key
, "systemd.default_timeout_start_sec")) {
454 if (proc_cmdline_value_missing(key
, value
))
457 r
= parse_sec(value
, &arg_default_timeout_start_usec
);
459 log_warning_errno(r
, "Failed to parse default start timeout: %s, ignoring.", value
);
461 if (arg_default_timeout_start_usec
<= 0)
462 arg_default_timeout_start_usec
= USEC_INFINITY
;
464 } else if (proc_cmdline_key_streq(key
, "systemd.watchdog_device")) {
466 if (proc_cmdline_value_missing(key
, value
))
469 parse_path_argument_and_warn(value
, false, &arg_watchdog_device
);
471 } else if (streq(key
, "quiet") && !value
) {
473 if (arg_show_status
== _SHOW_STATUS_UNSET
)
474 arg_show_status
= SHOW_STATUS_AUTO
;
476 } else if (streq(key
, "debug") && !value
) {
478 /* Note that log_parse_environment() handles 'debug'
479 * too, and sets the log level to LOG_DEBUG. */
481 if (detect_container() > 0)
482 log_set_target(LOG_TARGET_CONSOLE
);
487 /* SysV compatibility */
488 target
= runlevel_to_target(key
);
490 return free_and_strdup(&arg_default_unit
, target
);
496 #define DEFINE_SETTER(name, func, descr) \
497 static int name(const char *unit, \
498 const char *filename, \
500 const char *section, \
501 unsigned section_line, \
502 const char *lvalue, \
504 const char *rvalue, \
516 log_syntax(unit, LOG_ERR, filename, line, r, \
517 "Invalid " descr "'%s': %m", \
523 DEFINE_SETTER(config_parse_level2
, log_set_max_level_from_string
, "log level");
524 DEFINE_SETTER(config_parse_target
, log_set_target_from_string
, "target");
525 DEFINE_SETTER(config_parse_color
, log_show_color_from_string
, "color" );
526 DEFINE_SETTER(config_parse_location
, log_show_location_from_string
, "location");
528 static int config_parse_cpu_affinity2(
530 const char *filename
,
533 unsigned section_line
,
540 _cleanup_cpu_free_ cpu_set_t
*c
= NULL
;
543 ncpus
= parse_cpu_set_and_warn(rvalue
, &c
, unit
, filename
, line
, lvalue
);
547 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
548 log_warning_errno(errno
, "Failed to set CPU affinity: %m");
553 static int config_parse_show_status(
555 const char *filename
,
558 unsigned section_line
,
566 ShowStatus
*b
= data
;
573 k
= parse_show_status(rvalue
, b
);
575 log_syntax(unit
, LOG_ERR
, filename
, line
, k
, "Failed to parse show status setting, ignoring: %s", rvalue
);
582 static int config_parse_output_restricted(
584 const char *filename
,
587 unsigned section_line
,
594 ExecOutput t
, *eo
= data
;
601 t
= exec_output_from_string(rvalue
);
603 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "Failed to parse output type, ignoring: %s", rvalue
);
607 if (IN_SET(t
, EXEC_OUTPUT_SOCKET
, EXEC_OUTPUT_NAMED_FD
, EXEC_OUTPUT_FILE
)) {
608 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue
);
616 static int config_parse_crash_chvt(
618 const char *filename
,
621 unsigned section_line
,
634 r
= parse_crash_chvt(rvalue
);
636 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue
);
643 static int parse_config_file(void) {
645 const ConfigTableItem items
[] = {
646 { "Manager", "LogLevel", config_parse_level2
, 0, NULL
},
647 { "Manager", "LogTarget", config_parse_target
, 0, NULL
},
648 { "Manager", "LogColor", config_parse_color
, 0, NULL
},
649 { "Manager", "LogLocation", config_parse_location
, 0, NULL
},
650 { "Manager", "DumpCore", config_parse_bool
, 0, &arg_dump_core
},
651 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt
, 0, NULL
},
652 { "Manager", "CrashChangeVT", config_parse_crash_chvt
, 0, NULL
},
653 { "Manager", "CrashShell", config_parse_bool
, 0, &arg_crash_shell
},
654 { "Manager", "CrashReboot", config_parse_bool
, 0, &arg_crash_reboot
},
655 { "Manager", "ShowStatus", config_parse_show_status
, 0, &arg_show_status
},
656 { "Manager", "CPUAffinity", config_parse_cpu_affinity2
, 0, NULL
},
657 { "Manager", "JoinControllers", config_parse_join_controllers
, 0, &arg_join_controllers
},
658 { "Manager", "RuntimeWatchdogSec", config_parse_sec
, 0, &arg_runtime_watchdog
},
659 { "Manager", "ShutdownWatchdogSec", config_parse_sec
, 0, &arg_shutdown_watchdog
},
660 { "Manager", "WatchdogDevice", config_parse_path
, 0, &arg_watchdog_device
},
661 { "Manager", "CapabilityBoundingSet", config_parse_capability_set
, 0, &arg_capability_bounding_set
},
662 { "Manager", "NoNewPrivileges", config_parse_bool
, 0, &arg_no_new_privs
},
664 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs
, 0, &arg_syscall_archs
},
666 { "Manager", "TimerSlackNSec", config_parse_nsec
, 0, &arg_timer_slack_nsec
},
667 { "Manager", "DefaultTimerAccuracySec", config_parse_sec
, 0, &arg_default_timer_accuracy_usec
},
668 { "Manager", "DefaultStandardOutput", config_parse_output_restricted
,0, &arg_default_std_output
},
669 { "Manager", "DefaultStandardError", config_parse_output_restricted
,0, &arg_default_std_error
},
670 { "Manager", "DefaultTimeoutStartSec", config_parse_sec
, 0, &arg_default_timeout_start_usec
},
671 { "Manager", "DefaultTimeoutStopSec", config_parse_sec
, 0, &arg_default_timeout_stop_usec
},
672 { "Manager", "DefaultRestartSec", config_parse_sec
, 0, &arg_default_restart_usec
},
673 { "Manager", "DefaultStartLimitInterval", config_parse_sec
, 0, &arg_default_start_limit_interval
}, /* obsolete alias */
674 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec
, 0, &arg_default_start_limit_interval
},
675 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned
, 0, &arg_default_start_limit_burst
},
676 { "Manager", "DefaultEnvironment", config_parse_environ
, 0, &arg_default_environment
},
677 { "Manager", "DefaultLimitCPU", config_parse_rlimit
, RLIMIT_CPU
, arg_default_rlimit
},
678 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit
, RLIMIT_FSIZE
, arg_default_rlimit
},
679 { "Manager", "DefaultLimitDATA", config_parse_rlimit
, RLIMIT_DATA
, arg_default_rlimit
},
680 { "Manager", "DefaultLimitSTACK", config_parse_rlimit
, RLIMIT_STACK
, arg_default_rlimit
},
681 { "Manager", "DefaultLimitCORE", config_parse_rlimit
, RLIMIT_CORE
, arg_default_rlimit
},
682 { "Manager", "DefaultLimitRSS", config_parse_rlimit
, RLIMIT_RSS
, arg_default_rlimit
},
683 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit
, RLIMIT_NOFILE
, arg_default_rlimit
},
684 { "Manager", "DefaultLimitAS", config_parse_rlimit
, RLIMIT_AS
, arg_default_rlimit
},
685 { "Manager", "DefaultLimitNPROC", config_parse_rlimit
, RLIMIT_NPROC
, arg_default_rlimit
},
686 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit
, RLIMIT_MEMLOCK
, arg_default_rlimit
},
687 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit
, RLIMIT_LOCKS
, arg_default_rlimit
},
688 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit
, RLIMIT_SIGPENDING
, arg_default_rlimit
},
689 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit
, RLIMIT_MSGQUEUE
, arg_default_rlimit
},
690 { "Manager", "DefaultLimitNICE", config_parse_rlimit
, RLIMIT_NICE
, arg_default_rlimit
},
691 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit
, RLIMIT_RTPRIO
, arg_default_rlimit
},
692 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit
, RLIMIT_RTTIME
, arg_default_rlimit
},
693 { "Manager", "DefaultCPUAccounting", config_parse_bool
, 0, &arg_default_cpu_accounting
},
694 { "Manager", "DefaultIOAccounting", config_parse_bool
, 0, &arg_default_io_accounting
},
695 { "Manager", "DefaultIPAccounting", config_parse_bool
, 0, &arg_default_ip_accounting
},
696 { "Manager", "DefaultBlockIOAccounting", config_parse_bool
, 0, &arg_default_blockio_accounting
},
697 { "Manager", "DefaultMemoryAccounting", config_parse_bool
, 0, &arg_default_memory_accounting
},
698 { "Manager", "DefaultTasksAccounting", config_parse_bool
, 0, &arg_default_tasks_accounting
},
699 { "Manager", "DefaultTasksMax", config_parse_tasks_max
, 0, &arg_default_tasks_max
},
700 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action
, 0, &arg_cad_burst_action
},
704 const char *fn
, *conf_dirs_nulstr
;
707 PKGSYSCONFDIR
"/system.conf" :
708 PKGSYSCONFDIR
"/user.conf";
710 conf_dirs_nulstr
= arg_system
?
711 CONF_PATHS_NULSTR("systemd/system.conf.d") :
712 CONF_PATHS_NULSTR("systemd/user.conf.d");
714 (void) config_parse_many_nulstr(fn
, conf_dirs_nulstr
, "Manager\0", config_item_table_lookup
, items
, CONFIG_PARSE_WARN
, NULL
);
716 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
717 * like everywhere else. */
718 if (arg_default_timeout_start_usec
<= 0)
719 arg_default_timeout_start_usec
= USEC_INFINITY
;
720 if (arg_default_timeout_stop_usec
<= 0)
721 arg_default_timeout_stop_usec
= USEC_INFINITY
;
726 static void set_manager_defaults(Manager
*m
) {
730 /* Propagates the various default unit property settings into the manager object, i.e. properties that do not
731 * affect the manager itself, but are just what newly allocated units will have set if they haven't set
732 * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */
734 m
->default_timer_accuracy_usec
= arg_default_timer_accuracy_usec
;
735 m
->default_std_output
= arg_default_std_output
;
736 m
->default_std_error
= arg_default_std_error
;
737 m
->default_timeout_start_usec
= arg_default_timeout_start_usec
;
738 m
->default_timeout_stop_usec
= arg_default_timeout_stop_usec
;
739 m
->default_restart_usec
= arg_default_restart_usec
;
740 m
->default_start_limit_interval
= arg_default_start_limit_interval
;
741 m
->default_start_limit_burst
= arg_default_start_limit_burst
;
742 m
->default_cpu_accounting
= arg_default_cpu_accounting
;
743 m
->default_io_accounting
= arg_default_io_accounting
;
744 m
->default_ip_accounting
= arg_default_ip_accounting
;
745 m
->default_blockio_accounting
= arg_default_blockio_accounting
;
746 m
->default_memory_accounting
= arg_default_memory_accounting
;
747 m
->default_tasks_accounting
= arg_default_tasks_accounting
;
748 m
->default_tasks_max
= arg_default_tasks_max
;
750 manager_set_default_rlimits(m
, arg_default_rlimit
);
751 manager_environment_add(m
, NULL
, arg_default_environment
);
754 static void set_manager_settings(Manager
*m
) {
758 /* Propagates the various manager settings into the manager object, i.e. properties that effect the manager
759 * itself (as opposed to just being inherited into newly allocated units, see set_manager_defaults() above). */
761 m
->confirm_spawn
= arg_confirm_spawn
;
762 m
->service_watchdogs
= arg_service_watchdogs
;
763 m
->runtime_watchdog
= arg_runtime_watchdog
;
764 m
->shutdown_watchdog
= arg_shutdown_watchdog
;
765 m
->cad_burst_action
= arg_cad_burst_action
;
767 manager_set_show_status(m
, arg_show_status
);
770 static int parse_argv(int argc
, char *argv
[]) {
772 ARG_LOG_LEVEL
= 0x100,
782 ARG_DUMP_CONFIGURATION_ITEMS
,
783 ARG_DUMP_BUS_PROPERTIES
,
792 ARG_DEFAULT_STD_OUTPUT
,
793 ARG_DEFAULT_STD_ERROR
,
795 ARG_SERVICE_WATCHDOGS
,
798 static const struct option options
[] = {
799 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
800 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
801 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
802 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
803 { "unit", required_argument
, NULL
, ARG_UNIT
},
804 { "system", no_argument
, NULL
, ARG_SYSTEM
},
805 { "user", no_argument
, NULL
, ARG_USER
},
806 { "test", no_argument
, NULL
, ARG_TEST
},
807 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
808 { "help", no_argument
, NULL
, 'h' },
809 { "version", no_argument
, NULL
, ARG_VERSION
},
810 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
811 { "dump-bus-properties", no_argument
, NULL
, ARG_DUMP_BUS_PROPERTIES
},
812 { "dump-core", optional_argument
, NULL
, ARG_DUMP_CORE
},
813 { "crash-chvt", required_argument
, NULL
, ARG_CRASH_CHVT
},
814 { "crash-shell", optional_argument
, NULL
, ARG_CRASH_SHELL
},
815 { "crash-reboot", optional_argument
, NULL
, ARG_CRASH_REBOOT
},
816 { "confirm-spawn", optional_argument
, NULL
, ARG_CONFIRM_SPAWN
},
817 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
818 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
819 { "switched-root", no_argument
, NULL
, ARG_SWITCHED_ROOT
},
820 { "default-standard-output", required_argument
, NULL
, ARG_DEFAULT_STD_OUTPUT
, },
821 { "default-standard-error", required_argument
, NULL
, ARG_DEFAULT_STD_ERROR
, },
822 { "machine-id", required_argument
, NULL
, ARG_MACHINE_ID
},
823 { "service-watchdogs", required_argument
, NULL
, ARG_SERVICE_WATCHDOGS
},
832 if (getpid_cached() == 1)
835 while ((c
= getopt_long(argc
, argv
, "hDbsz:", options
, NULL
)) >= 0)
840 r
= log_set_max_level_from_string(optarg
);
842 log_error("Failed to parse log level %s.", optarg
);
849 r
= log_set_target_from_string(optarg
);
851 log_error("Failed to parse log target %s.", optarg
);
860 r
= log_show_color_from_string(optarg
);
862 log_error("Failed to parse log color setting %s.", optarg
);
866 log_show_color(true);
870 case ARG_LOG_LOCATION
:
872 r
= log_show_location_from_string(optarg
);
874 log_error("Failed to parse log location setting %s.", optarg
);
878 log_show_location(true);
882 case ARG_DEFAULT_STD_OUTPUT
:
883 r
= exec_output_from_string(optarg
);
885 log_error("Failed to parse default standard output setting %s.", optarg
);
888 arg_default_std_output
= r
;
891 case ARG_DEFAULT_STD_ERROR
:
892 r
= exec_output_from_string(optarg
);
894 log_error("Failed to parse default standard error output setting %s.", optarg
);
897 arg_default_std_error
= r
;
901 r
= free_and_strdup(&arg_default_unit
, optarg
);
903 return log_error_errno(r
, "Failed to set default unit %s: %m", optarg
);
916 arg_action
= ACTION_TEST
;
924 arg_action
= ACTION_VERSION
;
927 case ARG_DUMP_CONFIGURATION_ITEMS
:
928 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
931 case ARG_DUMP_BUS_PROPERTIES
:
932 arg_action
= ACTION_DUMP_BUS_PROPERTIES
;
937 arg_dump_core
= true;
939 r
= parse_boolean(optarg
);
941 return log_error_errno(r
, "Failed to parse dump core boolean: %s", optarg
);
947 r
= parse_crash_chvt(optarg
);
949 return log_error_errno(r
, "Failed to parse crash virtual terminal index: %s", optarg
);
952 case ARG_CRASH_SHELL
:
954 arg_crash_shell
= true;
956 r
= parse_boolean(optarg
);
958 return log_error_errno(r
, "Failed to parse crash shell boolean: %s", optarg
);
963 case ARG_CRASH_REBOOT
:
965 arg_crash_reboot
= true;
967 r
= parse_boolean(optarg
);
969 return log_error_errno(r
, "Failed to parse crash shell boolean: %s", optarg
);
970 arg_crash_reboot
= r
;
974 case ARG_CONFIRM_SPAWN
:
975 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
977 r
= parse_confirm_spawn(optarg
, &arg_confirm_spawn
);
979 return log_error_errno(r
, "Failed to parse confirm spawn option: %m");
982 case ARG_SERVICE_WATCHDOGS
:
983 r
= parse_boolean(optarg
);
985 return log_error_errno(r
, "Failed to parse service watchdogs boolean: %s", optarg
);
986 arg_service_watchdogs
= r
;
989 case ARG_SHOW_STATUS
:
991 r
= parse_show_status(optarg
, &arg_show_status
);
993 log_error("Failed to parse show status boolean %s.", optarg
);
997 arg_show_status
= SHOW_STATUS_YES
;
1000 case ARG_DESERIALIZE
: {
1004 r
= safe_atoi(optarg
, &fd
);
1005 if (r
< 0 || fd
< 0) {
1006 log_error("Failed to parse deserialize option %s.", optarg
);
1010 (void) fd_cloexec(fd
, true);
1012 f
= fdopen(fd
, "r");
1014 return log_error_errno(errno
, "Failed to open serialization fd: %m");
1016 safe_fclose(arg_serialization
);
1017 arg_serialization
= f
;
1022 case ARG_SWITCHED_ROOT
:
1023 arg_switched_root
= true;
1026 case ARG_MACHINE_ID
:
1027 r
= set_machine_id(optarg
);
1029 return log_error_errno(r
, "MachineID '%s' is not valid.", optarg
);
1033 arg_action
= ACTION_HELP
;
1037 log_set_max_level(LOG_DEBUG
);
1043 /* Just to eat away the sysvinit kernel
1044 * cmdline args without getopt() error
1045 * messages that we'll parse in
1046 * parse_proc_cmdline_word() or ignore. */
1049 if (getpid_cached() != 1)
1055 assert_not_reached("Unhandled option code.");
1058 if (optind
< argc
&& getpid_cached() != 1) {
1059 /* Hmm, when we aren't run as init system
1060 * let's complain about excess arguments */
1062 log_error("Excess arguments.");
1069 static int help(void) {
1071 printf("%s [OPTIONS...]\n\n"
1072 "Starts up and maintains the system or user services.\n\n"
1073 " -h --help Show this help\n"
1074 " --version Show version\n"
1075 " --test Determine startup sequence, dump it and exit\n"
1076 " --no-pager Do not pipe output into a pager\n"
1077 " --dump-configuration-items Dump understood unit configuration items\n"
1078 " --dump-bus-properties Dump exposed bus properties\n"
1079 " --unit=UNIT Set default unit\n"
1080 " --system Run a system instance, even if PID != 1\n"
1081 " --user Run a user instance\n"
1082 " --dump-core[=BOOL] Dump core on crash\n"
1083 " --crash-vt=NR Change to specified VT on crash\n"
1084 " --crash-reboot[=BOOL] Reboot on crash\n"
1085 " --crash-shell[=BOOL] Run shell on crash\n"
1086 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1087 " --show-status[=BOOL] Show status updates on the console during bootup\n"
1088 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
1089 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
1090 " --log-color[=BOOL] Highlight important log messages\n"
1091 " --log-location[=BOOL] Include code location in log messages\n"
1092 " --default-standard-output= Set default standard output for services\n"
1093 " --default-standard-error= Set default standard error output for services\n",
1094 program_invocation_short_name
);
1099 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
, bool switching_root
) {
1100 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1101 _cleanup_fclose_
FILE *f
= NULL
;
1108 r
= manager_open_serialization(m
, &f
);
1110 return log_error_errno(r
, "Failed to create serialization file: %m");
1112 /* Make sure nothing is really destructed when we shut down */
1114 bus_manager_send_reloading(m
, true);
1120 r
= manager_serialize(m
, f
, fds
, switching_root
);
1122 return log_error_errno(r
, "Failed to serialize state: %m");
1124 if (fseeko(f
, 0, SEEK_SET
) == (off_t
) -1)
1125 return log_error_errno(errno
, "Failed to rewind serialization fd: %m");
1127 r
= fd_cloexec(fileno(f
), false);
1129 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization: %m");
1131 r
= fdset_cloexec(fds
, false);
1133 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization fds: %m");
1136 *_fds
= TAKE_PTR(fds
);
1141 static int bump_rlimit_nofile(struct rlimit
*saved_rlimit
) {
1144 assert(saved_rlimit
);
1146 /* Save the original RLIMIT_NOFILE so that we can reset it
1147 * later when transitioning from the initrd to the main
1148 * systemd or suchlike. */
1149 if (getrlimit(RLIMIT_NOFILE
, saved_rlimit
) < 0)
1150 return log_warning_errno(errno
, "Reading RLIMIT_NOFILE failed, ignoring: %m");
1152 /* Make sure forked processes get the default kernel setting */
1153 if (!arg_default_rlimit
[RLIMIT_NOFILE
]) {
1156 rl
= newdup(struct rlimit
, saved_rlimit
, 1);
1160 arg_default_rlimit
[RLIMIT_NOFILE
] = rl
;
1163 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows */
1164 nr
= read_nr_open();
1165 r
= setrlimit_closest(RLIMIT_NOFILE
, &RLIMIT_MAKE_CONST(nr
));
1167 return log_warning_errno(r
, "Setting RLIMIT_NOFILE failed, ignoring: %m");
1172 static int bump_rlimit_memlock(struct rlimit
*saved_rlimit
) {
1175 assert(saved_rlimit
);
1176 assert(getuid() == 0);
1178 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1179 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1180 * bump the value high enough for the root user. */
1182 if (getrlimit(RLIMIT_MEMLOCK
, saved_rlimit
) < 0)
1183 return log_warning_errno(errno
, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1185 r
= setrlimit_closest(RLIMIT_MEMLOCK
, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1187 return log_warning_errno(r
, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1192 static void test_usr(void) {
1194 /* Check that /usr is not a separate fs */
1196 if (dir_is_empty("/usr") <= 0)
1199 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1200 "Some things will probably break (sometimes even silently) in mysterious ways. "
1201 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1204 static int enforce_syscall_archs(Set
*archs
) {
1208 if (!is_seccomp_available())
1211 r
= seccomp_restrict_archs(arg_syscall_archs
);
1213 return log_error_errno(r
, "Failed to enforce system call architecture restrication: %m");
1218 static int status_welcome(void) {
1219 _cleanup_free_
char *pretty_name
= NULL
, *ansi_color
= NULL
;
1222 if (arg_show_status
<= 0)
1225 r
= parse_os_release(NULL
,
1226 "PRETTY_NAME", &pretty_name
,
1227 "ANSI_COLOR", &ansi_color
,
1230 log_full_errno(r
== -ENOENT
? LOG_DEBUG
: LOG_WARNING
, r
,
1231 "Failed to read os-release file, ignoring: %m");
1233 if (log_get_show_color())
1234 return status_printf(NULL
, false, false,
1235 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1236 isempty(ansi_color
) ? "1" : ansi_color
,
1237 isempty(pretty_name
) ? "Linux" : pretty_name
);
1239 return status_printf(NULL
, false, false,
1240 "\nWelcome to %s!\n",
1241 isempty(pretty_name
) ? "Linux" : pretty_name
);
1244 static int write_container_id(void) {
1248 c
= getenv("container");
1252 RUN_WITH_UMASK(0022)
1253 r
= write_string_file("/run/systemd/container", c
, WRITE_STRING_FILE_CREATE
);
1255 return log_warning_errno(r
, "Failed to write /run/systemd/container, ignoring: %m");
1260 static int bump_unix_max_dgram_qlen(void) {
1261 _cleanup_free_
char *qlen
= NULL
;
1265 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
1266 * really really early during boot, so that it is actually applied to all our sockets, including the
1267 * $NOTIFY_SOCKET one. */
1269 r
= read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen
);
1271 return log_warning_errno(r
, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1273 r
= safe_atolu(qlen
, &v
);
1275 return log_warning_errno(r
, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen
);
1277 if (v
>= DEFAULT_UNIX_MAX_DGRAM_QLEN
)
1280 r
= write_string_filef("/proc/sys/net/unix/max_dgram_qlen", 0, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN
);
1282 return log_full_errno(IN_SET(r
, -EROFS
, -EPERM
, -EACCES
) ? LOG_DEBUG
: LOG_WARNING
, r
,
1283 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1288 static int fixup_environment(void) {
1289 _cleanup_free_
char *term
= NULL
;
1293 /* Only fix up the environment when we are started as PID 1 */
1294 if (getpid_cached() != 1)
1297 /* We expect the environment to be set correctly if run inside a container. */
1298 if (detect_container() > 0)
1301 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1302 * device used by the console. We try to make a better guess here since some consoles might not have support
1303 * for color mode for example.
1305 * However if TERM was configured through the kernel command line then leave it alone. */
1306 r
= proc_cmdline_get_key("TERM", 0, &term
);
1310 t
= term
?: default_term_for_tty("/dev/console");
1312 if (setenv("TERM", t
, 1) < 0)
1318 static void redirect_telinit(int argc
, char *argv
[]) {
1320 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1322 #if HAVE_SYSV_COMPAT
1323 if (getpid_cached() == 1)
1326 if (!strstr(program_invocation_short_name
, "init"))
1329 execv(SYSTEMCTL_BINARY_PATH
, argv
);
1330 log_error_errno(errno
, "Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
1335 static int become_shutdown(
1336 const char *shutdown_verb
,
1339 char log_level
[DECIMAL_STR_MAX(int) + 1],
1340 exit_code
[DECIMAL_STR_MAX(uint8_t) + 1],
1341 timeout
[DECIMAL_STR_MAX(usec_t
) + 1];
1343 const char* command_line
[13] = {
1344 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1346 "--timeout", timeout
,
1347 "--log-level", log_level
,
1351 _cleanup_strv_free_
char **env_block
= NULL
;
1355 assert(shutdown_verb
);
1356 assert(!command_line
[pos
]);
1357 env_block
= strv_copy(environ
);
1359 xsprintf(log_level
, "%d", log_get_max_level());
1360 xsprintf(timeout
, "%" PRI_USEC
"us", arg_default_timeout_stop_usec
);
1362 switch (log_get_target()) {
1364 case LOG_TARGET_KMSG
:
1365 case LOG_TARGET_JOURNAL_OR_KMSG
:
1366 case LOG_TARGET_SYSLOG_OR_KMSG
:
1367 command_line
[pos
++] = "kmsg";
1370 case LOG_TARGET_NULL
:
1371 command_line
[pos
++] = "null";
1374 case LOG_TARGET_CONSOLE
:
1376 command_line
[pos
++] = "console";
1380 if (log_get_show_color())
1381 command_line
[pos
++] = "--log-color";
1383 if (log_get_show_location())
1384 command_line
[pos
++] = "--log-location";
1386 if (streq(shutdown_verb
, "exit")) {
1387 command_line
[pos
++] = "--exit-code";
1388 command_line
[pos
++] = exit_code
;
1389 xsprintf(exit_code
, "%d", retval
);
1392 assert(pos
< ELEMENTSOF(command_line
));
1394 if (streq(shutdown_verb
, "reboot") &&
1395 arg_shutdown_watchdog
> 0 &&
1396 arg_shutdown_watchdog
!= USEC_INFINITY
) {
1400 /* If we reboot let's set the shutdown
1401 * watchdog and tell the shutdown binary to
1402 * repeatedly ping it */
1403 r
= watchdog_set_timeout(&arg_shutdown_watchdog
);
1404 watchdog_close(r
< 0);
1406 /* Tell the binary how often to ping, ignore failure */
1407 if (asprintf(&e
, "WATCHDOG_USEC="USEC_FMT
, arg_shutdown_watchdog
) > 0)
1408 (void) strv_consume(&env_block
, e
);
1410 if (arg_watchdog_device
&&
1411 asprintf(&e
, "WATCHDOG_DEVICE=%s", arg_watchdog_device
) > 0)
1412 (void) strv_consume(&env_block
, e
);
1414 watchdog_close(true);
1416 /* Avoid the creation of new processes forked by the
1417 * kernel; at this point, we will not listen to the
1419 if (detect_container() <= 0)
1420 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER
);
1422 execve(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
, env_block
);
1426 static void initialize_clock(void) {
1429 if (clock_is_localtime(NULL
) > 0) {
1433 * The very first call of settimeofday() also does a time warp in the kernel.
1435 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1436 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1437 * the RTC alone if the registry tells that the RTC runs in UTC.
1439 r
= clock_set_timezone(&min
);
1441 log_error_errno(r
, "Failed to apply local time delta, ignoring: %m");
1443 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min
);
1445 } else if (!in_initrd()) {
1447 * Do a dummy very first call to seal the kernel's time warp magic.
1449 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1450 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1451 * until we reach the real system.
1453 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1454 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1455 * be treated as UTC that way.
1457 (void) clock_reset_timewarp();
1460 r
= clock_apply_epoch();
1462 log_error_errno(r
, "Current system time is before build time, but cannot correct: %m");
1464 log_info("System time before build time, advancing clock.");
1467 static void initialize_coredump(bool skip_setup
) {
1469 if (getpid_cached() != 1)
1472 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1473 * will process core dumps for system services by default. */
1474 if (setrlimit(RLIMIT_CORE
, &RLIMIT_MAKE_CONST(RLIM_INFINITY
)) < 0)
1475 log_warning_errno(errno
, "Failed to set RLIMIT_CORE: %m");
1477 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1478 * until the systemd-coredump tool is enabled via sysctl. */
1480 disable_coredumps();
1484 static void do_reexecute(
1487 const struct rlimit
*saved_rlimit_nofile
,
1488 const struct rlimit
*saved_rlimit_memlock
,
1490 const char *switch_root_dir
,
1491 const char *switch_root_init
,
1492 const char **ret_error_message
) {
1494 unsigned i
, j
, args_size
;
1498 assert(saved_rlimit_nofile
);
1499 assert(saved_rlimit_memlock
);
1500 assert(ret_error_message
);
1502 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1504 watchdog_close(true);
1506 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1507 * child processes */
1509 if (saved_rlimit_nofile
->rlim_cur
> 0)
1510 (void) setrlimit(RLIMIT_NOFILE
, saved_rlimit_nofile
);
1511 if (saved_rlimit_memlock
->rlim_cur
!= (rlim_t
) -1)
1512 (void) setrlimit(RLIMIT_MEMLOCK
, saved_rlimit_memlock
);
1514 if (switch_root_dir
) {
1515 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1516 * SIGCHLD for them after deserializing. */
1517 broadcast_signal(SIGTERM
, false, true, arg_default_timeout_stop_usec
);
1519 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1520 r
= switch_root(switch_root_dir
, "/mnt", true, MS_MOVE
);
1522 log_error_errno(r
, "Failed to switch root, trying to continue: %m");
1525 args_size
= MAX(6, argc
+1);
1526 args
= newa(const char*, args_size
);
1528 if (!switch_root_init
) {
1529 char sfd
[DECIMAL_STR_MAX(int) + 1];
1531 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1532 * the user didn't specify an explicit init to spawn. */
1534 assert(arg_serialization
);
1537 xsprintf(sfd
, "%i", fileno(arg_serialization
));
1540 args
[i
++] = SYSTEMD_BINARY_PATH
;
1541 if (switch_root_dir
)
1542 args
[i
++] = "--switched-root";
1543 args
[i
++] = arg_system
? "--system" : "--user";
1544 args
[i
++] = "--deserialize";
1548 assert(i
<= args_size
);
1551 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1552 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1553 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1554 * before proceeding into the exec().
1556 valgrind_summary_hack();
1558 (void) execv(args
[0], (char* const*) args
);
1559 log_debug_errno(errno
, "Failed to execute our own binary, trying fallback: %m");
1562 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1563 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1564 * doesn't matter.) */
1566 arg_serialization
= safe_fclose(arg_serialization
);
1567 fds
= fdset_free(fds
);
1569 /* Reopen the console */
1570 (void) make_console_stdio();
1572 for (j
= 1, i
= 1; j
< (unsigned) argc
; j
++)
1573 args
[i
++] = argv
[j
];
1575 assert(i
<= args_size
);
1577 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1578 (void) reset_all_signal_handlers();
1579 (void) reset_signal_mask();
1581 if (switch_root_init
) {
1582 args
[0] = switch_root_init
;
1583 (void) execv(args
[0], (char* const*) args
);
1584 log_warning_errno(errno
, "Failed to execute configured init, trying fallback: %m");
1587 args
[0] = "/sbin/init";
1588 (void) execv(args
[0], (char* const*) args
);
1591 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
1592 ANSI_HIGHLIGHT_RED
" !! " ANSI_NORMAL
,
1593 "Failed to execute /sbin/init");
1596 log_warning("No /sbin/init, trying fallback");
1598 args
[0] = "/bin/sh";
1600 (void) execv(args
[0], (char* const*) args
);
1601 log_error_errno(errno
, "Failed to execute /bin/sh, giving up: %m");
1603 log_warning_errno(r
, "Failed to execute /sbin/init, giving up: %m");
1605 *ret_error_message
= "Failed to execute fallback shell";
1608 static int invoke_main_loop(
1610 bool *ret_reexecute
,
1611 int *ret_retval
, /* Return parameters relevant for shutting down */
1612 const char **ret_shutdown_verb
, /* … */
1613 FDSet
**ret_fds
, /* Return parameters for reexecuting */
1614 char **ret_switch_root_dir
, /* … */
1615 char **ret_switch_root_init
, /* … */
1616 const char **ret_error_message
) {
1621 assert(ret_reexecute
);
1623 assert(ret_shutdown_verb
);
1625 assert(ret_switch_root_dir
);
1626 assert(ret_switch_root_init
);
1627 assert(ret_error_message
);
1630 r
= manager_loop(m
);
1632 *ret_error_message
= "Failed to run main loop";
1633 return log_emergency_errno(r
, "Failed to run main loop: %m");
1636 switch (m
->exit_code
) {
1638 case MANAGER_RELOAD
: {
1639 LogTarget saved_log_target
;
1640 int saved_log_level
;
1642 log_info("Reloading.");
1644 /* First, save any overridden log level/target, then parse the configuration file, which might
1645 * change the log level to new settings. */
1647 saved_log_level
= m
->log_level_overridden
? log_get_max_level() : -1;
1648 saved_log_target
= m
->log_target_overridden
? log_get_target() : _LOG_TARGET_INVALID
;
1650 r
= parse_config_file();
1652 log_warning_errno(r
, "Failed to parse config file, ignoring: %m");
1654 set_manager_defaults(m
);
1656 if (saved_log_level
>= 0)
1657 manager_override_log_level(m
, saved_log_level
);
1658 if (saved_log_target
>= 0)
1659 manager_override_log_target(m
, saved_log_target
);
1661 r
= manager_reload(m
);
1663 log_warning_errno(r
, "Failed to reload, ignoring: %m");
1668 case MANAGER_REEXECUTE
:
1670 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, false);
1672 *ret_error_message
= "Failed to prepare for reexecution";
1676 log_notice("Reexecuting.");
1678 *ret_reexecute
= true;
1679 *ret_retval
= EXIT_SUCCESS
;
1680 *ret_shutdown_verb
= NULL
;
1681 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1685 case MANAGER_SWITCH_ROOT
:
1686 if (!m
->switch_root_init
) {
1687 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, true);
1689 *ret_error_message
= "Failed to prepare for reexecution";
1695 log_notice("Switching root.");
1697 *ret_reexecute
= true;
1698 *ret_retval
= EXIT_SUCCESS
;
1699 *ret_shutdown_verb
= NULL
;
1701 /* Steal the switch root parameters */
1702 *ret_switch_root_dir
= m
->switch_root
;
1703 *ret_switch_root_init
= m
->switch_root_init
;
1704 m
->switch_root
= m
->switch_root_init
= NULL
;
1710 if (MANAGER_IS_USER(m
)) {
1713 *ret_reexecute
= false;
1714 *ret_retval
= m
->return_value
;
1715 *ret_shutdown_verb
= NULL
;
1717 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1723 case MANAGER_REBOOT
:
1724 case MANAGER_POWEROFF
:
1726 case MANAGER_KEXEC
: {
1727 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1728 [MANAGER_EXIT
] = "exit",
1729 [MANAGER_REBOOT
] = "reboot",
1730 [MANAGER_POWEROFF
] = "poweroff",
1731 [MANAGER_HALT
] = "halt",
1732 [MANAGER_KEXEC
] = "kexec"
1735 log_notice("Shutting down.");
1737 *ret_reexecute
= false;
1738 *ret_retval
= m
->return_value
;
1739 assert_se(*ret_shutdown_verb
= table
[m
->exit_code
]);
1741 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1747 assert_not_reached("Unknown exit code.");
1752 static void log_execution_mode(bool *ret_first_boot
) {
1753 assert(ret_first_boot
);
1758 log_info(PACKAGE_STRING
" running in %ssystem mode. (" SYSTEMD_FEATURES
")",
1759 arg_action
== ACTION_TEST
? "test " : "" );
1761 v
= detect_virtualization();
1763 log_info("Detected virtualization %s.", virtualization_to_string(v
));
1765 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1768 *ret_first_boot
= false;
1769 log_info("Running in initial RAM disk.");
1771 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1772 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1773 * doesn't it's unpopulated. This allows container managers and installers to provision a
1774 * couple of files already. If the container manager wants to provision the machine ID itself
1775 * it should pass $container_uuid to PID 1. */
1777 *ret_first_boot
= access("/etc/machine-id", F_OK
) < 0;
1778 if (*ret_first_boot
)
1779 log_info("Running with unpopulated /etc.");
1782 if (DEBUG_LOGGING
) {
1783 _cleanup_free_
char *t
;
1785 t
= uid_to_name(getuid());
1786 log_debug(PACKAGE_STRING
" running in %suser mode for user " UID_FMT
"/%s. (" SYSTEMD_FEATURES
")",
1787 arg_action
== ACTION_TEST
? " test" : "", getuid(), strna(t
));
1790 *ret_first_boot
= false;
1794 static int initialize_runtime(
1796 struct rlimit
*saved_rlimit_nofile
,
1797 struct rlimit
*saved_rlimit_memlock
,
1798 const char **ret_error_message
) {
1802 assert(ret_error_message
);
1804 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1806 * - Some only apply to --system instances
1807 * - Some only apply to --user instances
1808 * - Some only apply when we first start up, but not when we reexecute
1811 if (arg_action
!= ACTION_RUN
)
1815 /* Make sure we leave a core dump without panicing the kernel. */
1816 install_crash_handler();
1819 r
= mount_cgroup_controllers(arg_join_controllers
);
1821 *ret_error_message
= "Failed to mount cgroup hierarchies";
1827 machine_id_setup(NULL
, arg_machine_id
, NULL
);
1829 bump_unix_max_dgram_qlen();
1831 write_container_id();
1834 if (arg_watchdog_device
) {
1835 r
= watchdog_set_device(arg_watchdog_device
);
1837 log_warning_errno(r
, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device
);
1840 if (arg_runtime_watchdog
> 0 && arg_runtime_watchdog
!= USEC_INFINITY
)
1841 watchdog_set_timeout(&arg_runtime_watchdog
);
1844 if (arg_timer_slack_nsec
!= NSEC_INFINITY
)
1845 if (prctl(PR_SET_TIMERSLACK
, arg_timer_slack_nsec
) < 0)
1846 log_warning_errno(errno
, "Failed to adjust timer slack, ignoring: %m");
1848 if (arg_system
&& !cap_test_all(arg_capability_bounding_set
)) {
1849 r
= capability_bounding_set_drop_usermode(arg_capability_bounding_set
);
1851 *ret_error_message
= "Failed to drop capability bounding set of usermode helpers";
1852 return log_emergency_errno(r
, "Failed to drop capability bounding set of usermode helpers: %m");
1855 r
= capability_bounding_set_drop(arg_capability_bounding_set
, true);
1857 *ret_error_message
= "Failed to drop capability bounding set";
1858 return log_emergency_errno(r
, "Failed to drop capability bounding set: %m");
1862 if (arg_system
&& arg_no_new_privs
) {
1863 if (prctl(PR_SET_NO_NEW_PRIVS
, 1, 0, 0, 0) < 0) {
1864 *ret_error_message
= "Failed to disable new privileges";
1865 return log_emergency_errno(errno
, "Failed to disable new privileges: %m");
1869 if (arg_syscall_archs
) {
1870 r
= enforce_syscall_archs(arg_syscall_archs
);
1872 *ret_error_message
= "Failed to set syscall architectures";
1878 /* Become reaper of our children */
1879 if (prctl(PR_SET_CHILD_SUBREAPER
, 1) < 0)
1880 log_warning_errno(errno
, "Failed to make us a subreaper: %m");
1883 /* Bump up RLIMIT_NOFILE for systemd itself */
1884 (void) bump_rlimit_nofile(saved_rlimit_nofile
);
1885 (void) bump_rlimit_memlock(saved_rlimit_memlock
);
1891 static int do_queue_default_job(
1893 const char **ret_error_message
) {
1895 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1896 Job
*default_unit_job
;
1897 Unit
*target
= NULL
;
1900 log_debug("Activating default unit: %s", arg_default_unit
);
1902 r
= manager_load_startable_unit_or_warn(m
, arg_default_unit
, NULL
, &target
);
1904 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET
);
1906 r
= manager_load_startable_unit_or_warn(m
, SPECIAL_RESCUE_TARGET
, NULL
, &target
);
1908 *ret_error_message
= r
== -ERFKILL
? "Rescue target masked"
1909 : "Failed to load rescue target";
1914 assert(target
->load_state
== UNIT_LOADED
);
1916 r
= manager_add_job(m
, JOB_START
, target
, JOB_ISOLATE
, &error
, &default_unit_job
);
1918 log_debug_errno(r
, "Default target could not be isolated, starting instead: %s", bus_error_message(&error
, r
));
1920 sd_bus_error_free(&error
);
1922 r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, &error
, &default_unit_job
);
1924 *ret_error_message
= "Failed to start default target";
1925 return log_emergency_errno(r
, "Failed to start default target: %s", bus_error_message(&error
, r
));
1929 *ret_error_message
= "Failed to isolate default target";
1930 return log_emergency_errno(r
, "Failed to isolate default target: %s", bus_error_message(&error
, r
));
1933 m
->default_unit_job_id
= default_unit_job
->id
;
1938 static void free_arguments(void) {
1940 /* Frees all arg_* variables, with the exception of arg_serialization */
1941 rlimit_free_all(arg_default_rlimit
);
1943 arg_default_unit
= mfree(arg_default_unit
);
1944 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
1945 arg_join_controllers
= strv_free_free(arg_join_controllers
);
1946 arg_default_environment
= strv_free(arg_default_environment
);
1947 arg_syscall_archs
= set_free(arg_syscall_archs
);
1950 static int load_configuration(int argc
, char **argv
, const char **ret_error_message
) {
1953 assert(ret_error_message
);
1955 arg_default_tasks_max
= system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE
, 100U);
1957 r
= parse_config_file();
1959 *ret_error_message
= "Failed to parse config file";
1964 r
= proc_cmdline_parse(parse_proc_cmdline_item
, NULL
, 0);
1966 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
1969 /* Note that this also parses bits from the kernel command line, including "debug". */
1970 log_parse_environment();
1972 r
= parse_argv(argc
, argv
);
1974 *ret_error_message
= "Failed to parse commandline arguments";
1978 /* Initialize default unit */
1979 if (!arg_default_unit
) {
1980 arg_default_unit
= strdup(SPECIAL_DEFAULT_TARGET
);
1981 if (!arg_default_unit
) {
1982 *ret_error_message
= "Failed to set default unit";
1987 /* Initialize the show status setting if it hasn't been set explicitly yet */
1988 if (arg_show_status
== _SHOW_STATUS_UNSET
)
1989 arg_show_status
= SHOW_STATUS_YES
;
1994 static int safety_checks(void) {
1996 if (getpid_cached() == 1 &&
1997 arg_action
!= ACTION_RUN
) {
1998 log_error("Unsupported execution mode while PID 1.");
2002 if (getpid_cached() == 1 &&
2004 log_error("Can't run --user mode as PID 1.");
2008 if (arg_action
== ACTION_RUN
&&
2010 getpid_cached() != 1) {
2011 log_error("Can't run system mode unless PID 1.");
2015 if (arg_action
== ACTION_TEST
&&
2017 log_error("Don't run test mode as root.");
2022 arg_action
== ACTION_RUN
&&
2024 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2029 arg_action
== ACTION_RUN
&&
2030 !getenv("XDG_RUNTIME_DIR")) {
2031 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2036 arg_action
== ACTION_RUN
&&
2037 running_in_chroot() > 0) {
2038 log_error("Cannot be run in a chroot() environment.");
2045 static int initialize_security(
2046 bool *loaded_policy
,
2047 dual_timestamp
*security_start_timestamp
,
2048 dual_timestamp
*security_finish_timestamp
,
2049 const char **ret_error_message
) {
2053 assert(loaded_policy
);
2054 assert(security_start_timestamp
);
2055 assert(security_finish_timestamp
);
2056 assert(ret_error_message
);
2058 dual_timestamp_get(security_start_timestamp
);
2060 r
= mac_selinux_setup(loaded_policy
);
2062 *ret_error_message
= "Failed to load SELinux policy";
2066 r
= mac_smack_setup(loaded_policy
);
2068 *ret_error_message
= "Failed to load SMACK policy";
2074 *ret_error_message
= "Failed to load IMA policy";
2078 dual_timestamp_get(security_finish_timestamp
);
2082 static void test_summary(Manager
*m
) {
2085 printf("-> By units:\n");
2086 manager_dump_units(m
, stdout
, "\t");
2088 printf("-> By jobs:\n");
2089 manager_dump_jobs(m
, stdout
, "\t");
2092 static int collect_fds(FDSet
**ret_fds
, const char **ret_error_message
) {
2096 assert(ret_error_message
);
2098 r
= fdset_new_fill(ret_fds
);
2100 *ret_error_message
= "Failed to allocate fd set";
2101 return log_emergency_errno(r
, "Failed to allocate fd set: %m");
2104 fdset_cloexec(*ret_fds
, true);
2106 if (arg_serialization
)
2107 assert_se(fdset_remove(*ret_fds
, fileno(arg_serialization
)) >= 0);
2112 static void setup_console_terminal(bool skip_setup
) {
2117 /* Become a session leader if we aren't one yet. */
2120 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2122 (void) release_terminal();
2124 /* Reset the console, but only if this is really init and we are freshly booted */
2125 if (getpid_cached() == 1 && !skip_setup
)
2126 (void) console_setup();
2129 static bool early_skip_setup_check(int argc
, char *argv
[]) {
2130 bool found_deserialize
= false;
2133 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2134 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2135 * anyway, even if in that case we also do deserialization. */
2137 for (i
= 1; i
< argc
; i
++) {
2138 if (streq(argv
[i
], "--switched-root"))
2139 return false; /* If we switched root, don't skip the setup. */
2140 else if (streq(argv
[i
], "--deserialize"))
2141 found_deserialize
= true;
2144 return found_deserialize
; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2147 int main(int argc
, char *argv
[]) {
2149 dual_timestamp initrd_timestamp
= DUAL_TIMESTAMP_NULL
, userspace_timestamp
= DUAL_TIMESTAMP_NULL
, kernel_timestamp
= DUAL_TIMESTAMP_NULL
,
2150 security_start_timestamp
= DUAL_TIMESTAMP_NULL
, security_finish_timestamp
= DUAL_TIMESTAMP_NULL
;
2151 struct rlimit saved_rlimit_nofile
= RLIMIT_MAKE_CONST(0), saved_rlimit_memlock
= RLIMIT_MAKE_CONST((rlim_t
) -1);
2152 bool skip_setup
, loaded_policy
= false, queue_default_job
= false, first_boot
= false, reexecute
= false;
2153 char *switch_root_dir
= NULL
, *switch_root_init
= NULL
;
2154 usec_t before_startup
, after_startup
;
2155 static char systemd
[] = "systemd";
2156 char timespan
[FORMAT_TIMESPAN_MAX
];
2157 const char *shutdown_verb
= NULL
, *error_message
= NULL
;
2158 int r
, retval
= EXIT_FAILURE
;
2162 /* SysV compatibility: redirect init → telinit */
2163 redirect_telinit(argc
, argv
);
2165 /* Take timestamps early on */
2166 dual_timestamp_from_monotonic(&kernel_timestamp
, 0);
2167 dual_timestamp_get(&userspace_timestamp
);
2169 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2171 skip_setup
= early_skip_setup_check(argc
, argv
);
2173 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2174 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
2175 program_invocation_short_name
= systemd
;
2176 (void) prctl(PR_SET_NAME
, systemd
);
2178 /* Save the original command line */
2182 /* Make sure that if the user says "syslog" we actually log to the journal. */
2183 log_set_upgrade_syslog_to_journal(true);
2185 if (getpid_cached() == 1) {
2186 /* When we run as PID 1 force system mode */
2189 /* Disable the umask logic */
2192 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be
2193 * activated yet (even though the log socket for it exists). */
2194 log_set_prohibit_ipc(true);
2196 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2197 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2198 * child process right before execve()'ing the actual binary, at a point in time where socket
2199 * activation stderr/stdout area already set up. */
2200 log_set_always_reopen_console(true);
2202 if (detect_container() <= 0) {
2204 /* Running outside of a container as PID 1 */
2205 log_set_target(LOG_TARGET_KMSG
);
2209 initrd_timestamp
= userspace_timestamp
;
2212 r
= mount_setup_early();
2214 error_message
= "Failed to mount early API filesystems";
2218 r
= initialize_security(
2220 &security_start_timestamp
,
2221 &security_finish_timestamp
,
2227 if (mac_selinux_init() < 0) {
2228 error_message
= "Failed to initialize SELinux policy";
2235 /* Set the default for later on, but don't actually open the logs like this for now. Note that
2236 * if we are transitioning from the initrd there might still be journal fd open, and we
2237 * shouldn't attempt opening that before we parsed /proc/cmdline which might redirect output
2239 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
2242 /* Running inside a container, as PID 1 */
2243 log_set_target(LOG_TARGET_CONSOLE
);
2246 /* For later on, see above... */
2247 log_set_target(LOG_TARGET_JOURNAL
);
2249 /* clear the kernel timestamp,
2250 * because we are in a container */
2251 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2254 initialize_coredump(skip_setup
);
2256 r
= fixup_environment();
2258 log_emergency_errno(r
, "Failed to fix up PID 1 environment: %m");
2259 error_message
= "Failed to fix up PID1 environment";
2264 /* Running as user instance */
2266 log_set_target(LOG_TARGET_AUTO
);
2269 /* clear the kernel timestamp,
2270 * because we are not PID 1 */
2271 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2275 /* Try to figure out if we can use colors with the console. No need to do that for user instances since
2276 * they never log into the console. */
2277 log_show_color(colors_enabled());
2279 r
= make_null_stdio();
2281 log_warning_errno(r
, "Failed to redirect standard streams to /dev/null, ignoring: %m");
2284 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2285 * /proc/$PID/fd is available. */
2286 if (getpid_cached() == 1) {
2288 /* Load the kernel modules early. */
2292 r
= mount_setup(loaded_policy
);
2294 error_message
= "Failed to mount API filesystems";
2299 /* Reset all signal handlers. */
2300 (void) reset_all_signal_handlers();
2301 (void) ignore_signals(SIGNALS_IGNORE
, -1);
2303 r
= load_configuration(argc
, argv
, &error_message
);
2307 r
= safety_checks();
2311 if (IN_SET(arg_action
, ACTION_TEST
, ACTION_HELP
, ACTION_DUMP_CONFIGURATION_ITEMS
, ACTION_DUMP_BUS_PROPERTIES
))
2312 (void) pager_open(arg_no_pager
, false);
2314 if (arg_action
!= ACTION_RUN
)
2317 if (arg_action
== ACTION_HELP
) {
2320 } else if (arg_action
== ACTION_VERSION
) {
2323 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
2324 unit_dump_config_items(stdout
);
2325 retval
= EXIT_SUCCESS
;
2327 } else if (arg_action
== ACTION_DUMP_BUS_PROPERTIES
) {
2328 dump_bus_properties(stdout
);
2329 retval
= EXIT_SUCCESS
;
2333 assert_se(IN_SET(arg_action
, ACTION_RUN
, ACTION_TEST
));
2335 /* Move out of the way, so that we won't block unmounts */
2336 assert_se(chdir("/") == 0);
2338 if (arg_action
== ACTION_RUN
) {
2340 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
2343 /* Remember open file descriptors for later deserialization */
2344 r
= collect_fds(&fds
, &error_message
);
2348 /* Give up any control of the console, but make sure its initialized. */
2349 setup_console_terminal(skip_setup
);
2351 /* Open the logging devices, if possible and necessary */
2355 log_execution_mode(&first_boot
);
2357 r
= initialize_runtime(skip_setup
,
2358 &saved_rlimit_nofile
,
2359 &saved_rlimit_memlock
,
2364 r
= manager_new(arg_system
? UNIT_FILE_SYSTEM
: UNIT_FILE_USER
,
2365 arg_action
== ACTION_TEST
? MANAGER_TEST_FULL
: 0,
2368 log_emergency_errno(r
, "Failed to allocate manager object: %m");
2369 error_message
= "Failed to allocate manager object";
2373 m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
] = kernel_timestamp
;
2374 m
->timestamps
[MANAGER_TIMESTAMP_INITRD
] = initrd_timestamp
;
2375 m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
] = userspace_timestamp
;
2376 m
->timestamps
[MANAGER_TIMESTAMP_SECURITY_START
] = security_start_timestamp
;
2377 m
->timestamps
[MANAGER_TIMESTAMP_SECURITY_FINISH
] = security_finish_timestamp
;
2379 set_manager_defaults(m
);
2380 set_manager_settings(m
);
2381 manager_set_first_boot(m
, first_boot
);
2383 /* Remember whether we should queue the default job */
2384 queue_default_job
= !arg_serialization
|| arg_switched_root
;
2386 before_startup
= now(CLOCK_MONOTONIC
);
2388 r
= manager_startup(m
, arg_serialization
, fds
);
2390 log_error_errno(r
, "Failed to fully start up daemon: %m");
2391 error_message
= "Failed to start up manager";
2395 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2396 fds
= fdset_free(fds
);
2397 arg_serialization
= safe_fclose(arg_serialization
);
2399 if (queue_default_job
) {
2400 r
= do_queue_default_job(m
, &error_message
);
2405 after_startup
= now(CLOCK_MONOTONIC
);
2407 log_full(arg_action
== ACTION_TEST
? LOG_INFO
: LOG_DEBUG
,
2408 "Loaded units and determined initial transaction in %s.",
2409 format_timespan(timespan
, sizeof(timespan
), after_startup
- before_startup
, 100 * USEC_PER_MSEC
));
2411 if (arg_action
== ACTION_TEST
) {
2413 retval
= EXIT_SUCCESS
;
2417 (void) invoke_main_loop(m
,
2430 arg_shutdown_watchdog
= m
->shutdown_watchdog
;
2431 m
= manager_free(m
);
2435 mac_selinux_finish();
2438 do_reexecute(argc
, argv
,
2439 &saved_rlimit_nofile
,
2440 &saved_rlimit_memlock
,
2444 &error_message
); /* This only returns if reexecution failed */
2446 arg_serialization
= safe_fclose(arg_serialization
);
2447 fds
= fdset_free(fds
);
2449 #if HAVE_VALGRIND_VALGRIND_H
2450 /* If we are PID 1 and running under valgrind, then let's exit
2451 * here explicitly. valgrind will only generate nice output on
2452 * exit(), not on exec(), hence let's do the former not the
2454 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND
) {
2455 /* Cleanup watchdog_device strings for valgrind. We need them
2456 * in become_shutdown() so normally we cannot free them yet. */
2457 watchdog_free_device();
2458 arg_watchdog_device
= mfree(arg_watchdog_device
);
2463 if (shutdown_verb
) {
2464 r
= become_shutdown(shutdown_verb
, retval
);
2465 log_error_errno(r
, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
2466 error_message
= "Failed to execute shutdown binary";
2469 watchdog_free_device();
2470 arg_watchdog_device
= mfree(arg_watchdog_device
);
2472 if (getpid_cached() == 1) {
2474 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
2475 ANSI_HIGHLIGHT_RED
"!!!!!!" ANSI_NORMAL
,
2476 "%s, freezing.", error_message
);