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_INVALID
;
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_INVALID
)
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
, EXEC_OUTPUT_FILE_APPEND
)) {
608 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "Standard output types socket, fd:, file:, append: 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 return log_error_errno(r
, "Failed to parse log level \"%s\": %m", optarg
);
847 r
= log_set_target_from_string(optarg
);
849 return log_error_errno(r
, "Failed to parse log target \"%s\": %m", optarg
);
856 r
= log_show_color_from_string(optarg
);
858 return log_error_errno(r
, "Failed to parse log color setting \"%s\": %m",
861 log_show_color(true);
865 case ARG_LOG_LOCATION
:
867 r
= log_show_location_from_string(optarg
);
869 return log_error_errno(r
, "Failed to parse log location setting \"%s\": %m",
872 log_show_location(true);
876 case ARG_DEFAULT_STD_OUTPUT
:
877 r
= exec_output_from_string(optarg
);
879 return log_error_errno(r
, "Failed to parse default standard output setting \"%s\": %m",
881 arg_default_std_output
= r
;
884 case ARG_DEFAULT_STD_ERROR
:
885 r
= exec_output_from_string(optarg
);
887 return log_error_errno(r
, "Failed to parse default standard error output setting \"%s\": %m",
889 arg_default_std_error
= r
;
893 r
= free_and_strdup(&arg_default_unit
, optarg
);
895 return log_error_errno(r
, "Failed to set default unit \"%s\": %m", optarg
);
908 arg_action
= ACTION_TEST
;
916 arg_action
= ACTION_VERSION
;
919 case ARG_DUMP_CONFIGURATION_ITEMS
:
920 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
923 case ARG_DUMP_BUS_PROPERTIES
:
924 arg_action
= ACTION_DUMP_BUS_PROPERTIES
;
929 arg_dump_core
= true;
931 r
= parse_boolean(optarg
);
933 return log_error_errno(r
, "Failed to parse dump core boolean: \"%s\": %m",
940 r
= parse_crash_chvt(optarg
);
942 return log_error_errno(r
, "Failed to parse crash virtual terminal index: \"%s\": %m",
946 case ARG_CRASH_SHELL
:
948 arg_crash_shell
= true;
950 r
= parse_boolean(optarg
);
952 return log_error_errno(r
, "Failed to parse crash shell boolean: \"%s\": %m",
958 case ARG_CRASH_REBOOT
:
960 arg_crash_reboot
= true;
962 r
= parse_boolean(optarg
);
964 return log_error_errno(r
, "Failed to parse crash shell boolean: \"%s\": %m",
966 arg_crash_reboot
= r
;
970 case ARG_CONFIRM_SPAWN
:
971 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
973 r
= parse_confirm_spawn(optarg
, &arg_confirm_spawn
);
975 return log_error_errno(r
, "Failed to parse confirm spawn option: \"%s\": %m",
979 case ARG_SERVICE_WATCHDOGS
:
980 r
= parse_boolean(optarg
);
982 return log_error_errno(r
, "Failed to parse service watchdogs boolean: \"%s\": %m",
984 arg_service_watchdogs
= r
;
987 case ARG_SHOW_STATUS
:
989 r
= parse_show_status(optarg
, &arg_show_status
);
991 return log_error_errno(r
, "Failed to parse show status boolean: \"%s\": %m",
994 arg_show_status
= SHOW_STATUS_YES
;
997 case ARG_DESERIALIZE
: {
1001 r
= safe_atoi(optarg
, &fd
);
1003 log_error_errno(r
, "Failed to parse deserialize option \"%s\": %m", optarg
);
1005 log_error("Invalid deserialize fd: %d", fd
);
1009 (void) fd_cloexec(fd
, true);
1011 f
= fdopen(fd
, "r");
1013 return log_error_errno(errno
, "Failed to open serialization fd %d: %m", fd
);
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: %m", 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) {
1069 _cleanup_free_
char *link
= NULL
;
1072 r
= terminal_urlify_man("systemd", "1", &link
);
1076 printf("%s [OPTIONS...]\n\n"
1077 "Starts up and maintains the system or user services.\n\n"
1078 " -h --help Show this help\n"
1079 " --version Show version\n"
1080 " --test Determine startup sequence, dump it and exit\n"
1081 " --no-pager Do not pipe output into a pager\n"
1082 " --dump-configuration-items Dump understood unit configuration items\n"
1083 " --dump-bus-properties Dump exposed bus properties\n"
1084 " --unit=UNIT Set default unit\n"
1085 " --system Run a system instance, even if PID != 1\n"
1086 " --user Run a user instance\n"
1087 " --dump-core[=BOOL] Dump core on crash\n"
1088 " --crash-vt=NR Change to specified VT on crash\n"
1089 " --crash-reboot[=BOOL] Reboot on crash\n"
1090 " --crash-shell[=BOOL] Run shell on crash\n"
1091 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1092 " --show-status[=BOOL] Show status updates on the console during bootup\n"
1093 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
1094 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
1095 " --log-color[=BOOL] Highlight important log messages\n"
1096 " --log-location[=BOOL] Include code location in log messages\n"
1097 " --default-standard-output= Set default standard output for services\n"
1098 " --default-standard-error= Set default standard error output for services\n"
1099 "\nSee the %s for details.\n"
1100 , program_invocation_short_name
1107 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
, bool switching_root
) {
1108 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
1109 _cleanup_fclose_
FILE *f
= NULL
;
1116 r
= manager_open_serialization(m
, &f
);
1118 return log_error_errno(r
, "Failed to create serialization file: %m");
1120 /* Make sure nothing is really destructed when we shut down */
1122 bus_manager_send_reloading(m
, true);
1128 r
= manager_serialize(m
, f
, fds
, switching_root
);
1130 return log_error_errno(r
, "Failed to serialize state: %m");
1132 if (fseeko(f
, 0, SEEK_SET
) == (off_t
) -1)
1133 return log_error_errno(errno
, "Failed to rewind serialization fd: %m");
1135 r
= fd_cloexec(fileno(f
), false);
1137 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization: %m");
1139 r
= fdset_cloexec(fds
, false);
1141 return log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization fds: %m");
1144 *_fds
= TAKE_PTR(fds
);
1149 static int bump_rlimit_nofile(struct rlimit
*saved_rlimit
) {
1152 assert(saved_rlimit
);
1154 /* Save the original RLIMIT_NOFILE so that we can reset it
1155 * later when transitioning from the initrd to the main
1156 * systemd or suchlike. */
1157 if (getrlimit(RLIMIT_NOFILE
, saved_rlimit
) < 0)
1158 return log_warning_errno(errno
, "Reading RLIMIT_NOFILE failed, ignoring: %m");
1160 /* Make sure forked processes get the default kernel setting */
1161 if (!arg_default_rlimit
[RLIMIT_NOFILE
]) {
1164 rl
= newdup(struct rlimit
, saved_rlimit
, 1);
1168 arg_default_rlimit
[RLIMIT_NOFILE
] = rl
;
1171 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows */
1172 nr
= read_nr_open();
1173 r
= setrlimit_closest(RLIMIT_NOFILE
, &RLIMIT_MAKE_CONST(nr
));
1175 return log_warning_errno(r
, "Setting RLIMIT_NOFILE failed, ignoring: %m");
1180 static int bump_rlimit_memlock(struct rlimit
*saved_rlimit
) {
1183 assert(saved_rlimit
);
1184 assert(getuid() == 0);
1186 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1187 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1188 * bump the value high enough for the root user. */
1190 if (getrlimit(RLIMIT_MEMLOCK
, saved_rlimit
) < 0)
1191 return log_warning_errno(errno
, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1193 r
= setrlimit_closest(RLIMIT_MEMLOCK
, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1195 return log_warning_errno(r
, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1200 static void test_usr(void) {
1202 /* Check that /usr is not a separate fs */
1204 if (dir_is_empty("/usr") <= 0)
1207 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1208 "Some things will probably break (sometimes even silently) in mysterious ways. "
1209 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1212 static int enforce_syscall_archs(Set
*archs
) {
1216 if (!is_seccomp_available())
1219 r
= seccomp_restrict_archs(arg_syscall_archs
);
1221 return log_error_errno(r
, "Failed to enforce system call architecture restrication: %m");
1226 static int status_welcome(void) {
1227 _cleanup_free_
char *pretty_name
= NULL
, *ansi_color
= NULL
;
1230 if (IN_SET(arg_show_status
, SHOW_STATUS_NO
, SHOW_STATUS_AUTO
))
1233 r
= parse_os_release(NULL
,
1234 "PRETTY_NAME", &pretty_name
,
1235 "ANSI_COLOR", &ansi_color
,
1238 log_full_errno(r
== -ENOENT
? LOG_DEBUG
: LOG_WARNING
, r
,
1239 "Failed to read os-release file, ignoring: %m");
1241 if (log_get_show_color())
1242 return status_printf(NULL
, false, false,
1243 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1244 isempty(ansi_color
) ? "1" : ansi_color
,
1245 isempty(pretty_name
) ? "Linux" : pretty_name
);
1247 return status_printf(NULL
, false, false,
1248 "\nWelcome to %s!\n",
1249 isempty(pretty_name
) ? "Linux" : pretty_name
);
1252 static int write_container_id(void) {
1256 c
= getenv("container");
1260 RUN_WITH_UMASK(0022)
1261 r
= write_string_file("/run/systemd/container", c
, WRITE_STRING_FILE_CREATE
);
1263 return log_warning_errno(r
, "Failed to write /run/systemd/container, ignoring: %m");
1268 static int bump_unix_max_dgram_qlen(void) {
1269 _cleanup_free_
char *qlen
= NULL
;
1273 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
1274 * really really early during boot, so that it is actually applied to all our sockets, including the
1275 * $NOTIFY_SOCKET one. */
1277 r
= read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen
);
1279 return log_warning_errno(r
, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1281 r
= safe_atolu(qlen
, &v
);
1283 return log_warning_errno(r
, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen
);
1285 if (v
>= DEFAULT_UNIX_MAX_DGRAM_QLEN
)
1288 r
= write_string_filef("/proc/sys/net/unix/max_dgram_qlen", 0, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN
);
1290 return log_full_errno(IN_SET(r
, -EROFS
, -EPERM
, -EACCES
) ? LOG_DEBUG
: LOG_WARNING
, r
,
1291 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1296 static int fixup_environment(void) {
1297 _cleanup_free_
char *term
= NULL
;
1301 /* Only fix up the environment when we are started as PID 1 */
1302 if (getpid_cached() != 1)
1305 /* We expect the environment to be set correctly if run inside a container. */
1306 if (detect_container() > 0)
1309 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1310 * device used by the console. We try to make a better guess here since some consoles might not have support
1311 * for color mode for example.
1313 * However if TERM was configured through the kernel command line then leave it alone. */
1314 r
= proc_cmdline_get_key("TERM", 0, &term
);
1318 t
= term
?: default_term_for_tty("/dev/console");
1320 if (setenv("TERM", t
, 1) < 0)
1326 static void redirect_telinit(int argc
, char *argv
[]) {
1328 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1330 #if HAVE_SYSV_COMPAT
1331 if (getpid_cached() == 1)
1334 if (!strstr(program_invocation_short_name
, "init"))
1337 execv(SYSTEMCTL_BINARY_PATH
, argv
);
1338 log_error_errno(errno
, "Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
1343 static int become_shutdown(
1344 const char *shutdown_verb
,
1347 char log_level
[DECIMAL_STR_MAX(int) + 1],
1348 exit_code
[DECIMAL_STR_MAX(uint8_t) + 1],
1349 timeout
[DECIMAL_STR_MAX(usec_t
) + 1];
1351 const char* command_line
[13] = {
1352 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1354 "--timeout", timeout
,
1355 "--log-level", log_level
,
1359 _cleanup_strv_free_
char **env_block
= NULL
;
1363 assert(shutdown_verb
);
1364 assert(!command_line
[pos
]);
1365 env_block
= strv_copy(environ
);
1367 xsprintf(log_level
, "%d", log_get_max_level());
1368 xsprintf(timeout
, "%" PRI_USEC
"us", arg_default_timeout_stop_usec
);
1370 switch (log_get_target()) {
1372 case LOG_TARGET_KMSG
:
1373 case LOG_TARGET_JOURNAL_OR_KMSG
:
1374 case LOG_TARGET_SYSLOG_OR_KMSG
:
1375 command_line
[pos
++] = "kmsg";
1378 case LOG_TARGET_NULL
:
1379 command_line
[pos
++] = "null";
1382 case LOG_TARGET_CONSOLE
:
1384 command_line
[pos
++] = "console";
1388 if (log_get_show_color())
1389 command_line
[pos
++] = "--log-color";
1391 if (log_get_show_location())
1392 command_line
[pos
++] = "--log-location";
1394 if (streq(shutdown_verb
, "exit")) {
1395 command_line
[pos
++] = "--exit-code";
1396 command_line
[pos
++] = exit_code
;
1397 xsprintf(exit_code
, "%d", retval
);
1400 assert(pos
< ELEMENTSOF(command_line
));
1402 if (streq(shutdown_verb
, "reboot") &&
1403 arg_shutdown_watchdog
> 0 &&
1404 arg_shutdown_watchdog
!= USEC_INFINITY
) {
1408 /* If we reboot let's set the shutdown
1409 * watchdog and tell the shutdown binary to
1410 * repeatedly ping it */
1411 r
= watchdog_set_timeout(&arg_shutdown_watchdog
);
1412 watchdog_close(r
< 0);
1414 /* Tell the binary how often to ping, ignore failure */
1415 if (asprintf(&e
, "WATCHDOG_USEC="USEC_FMT
, arg_shutdown_watchdog
) > 0)
1416 (void) strv_consume(&env_block
, e
);
1418 if (arg_watchdog_device
&&
1419 asprintf(&e
, "WATCHDOG_DEVICE=%s", arg_watchdog_device
) > 0)
1420 (void) strv_consume(&env_block
, e
);
1422 watchdog_close(true);
1424 /* Avoid the creation of new processes forked by the
1425 * kernel; at this point, we will not listen to the
1427 if (detect_container() <= 0)
1428 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER
);
1430 execve(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
, env_block
);
1434 static void initialize_clock(void) {
1437 if (clock_is_localtime(NULL
) > 0) {
1441 * The very first call of settimeofday() also does a time warp in the kernel.
1443 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1444 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1445 * the RTC alone if the registry tells that the RTC runs in UTC.
1447 r
= clock_set_timezone(&min
);
1449 log_error_errno(r
, "Failed to apply local time delta, ignoring: %m");
1451 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min
);
1453 } else if (!in_initrd()) {
1455 * Do a dummy very first call to seal the kernel's time warp magic.
1457 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1458 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1459 * until we reach the real system.
1461 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1462 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1463 * be treated as UTC that way.
1465 (void) clock_reset_timewarp();
1468 r
= clock_apply_epoch();
1470 log_error_errno(r
, "Current system time is before build time, but cannot correct: %m");
1472 log_info("System time before build time, advancing clock.");
1475 static void initialize_coredump(bool skip_setup
) {
1477 if (getpid_cached() != 1)
1480 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1481 * will process core dumps for system services by default. */
1482 if (setrlimit(RLIMIT_CORE
, &RLIMIT_MAKE_CONST(RLIM_INFINITY
)) < 0)
1483 log_warning_errno(errno
, "Failed to set RLIMIT_CORE: %m");
1485 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1486 * until the systemd-coredump tool is enabled via sysctl. */
1488 disable_coredumps();
1492 static void do_reexecute(
1495 const struct rlimit
*saved_rlimit_nofile
,
1496 const struct rlimit
*saved_rlimit_memlock
,
1498 const char *switch_root_dir
,
1499 const char *switch_root_init
,
1500 const char **ret_error_message
) {
1502 unsigned i
, j
, args_size
;
1506 assert(saved_rlimit_nofile
);
1507 assert(saved_rlimit_memlock
);
1508 assert(ret_error_message
);
1510 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1512 watchdog_close(true);
1514 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1515 * child processes */
1517 if (saved_rlimit_nofile
->rlim_cur
> 0)
1518 (void) setrlimit(RLIMIT_NOFILE
, saved_rlimit_nofile
);
1519 if (saved_rlimit_memlock
->rlim_cur
!= (rlim_t
) -1)
1520 (void) setrlimit(RLIMIT_MEMLOCK
, saved_rlimit_memlock
);
1522 if (switch_root_dir
) {
1523 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1524 * SIGCHLD for them after deserializing. */
1525 broadcast_signal(SIGTERM
, false, true, arg_default_timeout_stop_usec
);
1527 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1528 r
= switch_root(switch_root_dir
, "/mnt", true, MS_MOVE
);
1530 log_error_errno(r
, "Failed to switch root, trying to continue: %m");
1533 args_size
= MAX(6, argc
+1);
1534 args
= newa(const char*, args_size
);
1536 if (!switch_root_init
) {
1537 char sfd
[DECIMAL_STR_MAX(int) + 1];
1539 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1540 * the user didn't specify an explicit init to spawn. */
1542 assert(arg_serialization
);
1545 xsprintf(sfd
, "%i", fileno(arg_serialization
));
1548 args
[i
++] = SYSTEMD_BINARY_PATH
;
1549 if (switch_root_dir
)
1550 args
[i
++] = "--switched-root";
1551 args
[i
++] = arg_system
? "--system" : "--user";
1552 args
[i
++] = "--deserialize";
1556 assert(i
<= args_size
);
1559 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1560 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1561 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1562 * before proceeding into the exec().
1564 valgrind_summary_hack();
1566 (void) execv(args
[0], (char* const*) args
);
1567 log_debug_errno(errno
, "Failed to execute our own binary, trying fallback: %m");
1570 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1571 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1572 * doesn't matter.) */
1574 arg_serialization
= safe_fclose(arg_serialization
);
1575 fds
= fdset_free(fds
);
1577 /* Reopen the console */
1578 (void) make_console_stdio();
1580 for (j
= 1, i
= 1; j
< (unsigned) argc
; j
++)
1581 args
[i
++] = argv
[j
];
1583 assert(i
<= args_size
);
1585 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1586 (void) reset_all_signal_handlers();
1587 (void) reset_signal_mask();
1589 if (switch_root_init
) {
1590 args
[0] = switch_root_init
;
1591 (void) execv(args
[0], (char* const*) args
);
1592 log_warning_errno(errno
, "Failed to execute configured init, trying fallback: %m");
1595 args
[0] = "/sbin/init";
1596 (void) execv(args
[0], (char* const*) args
);
1599 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
1600 ANSI_HIGHLIGHT_RED
" !! " ANSI_NORMAL
,
1601 "Failed to execute /sbin/init");
1604 log_warning("No /sbin/init, trying fallback");
1606 args
[0] = "/bin/sh";
1608 (void) execv(args
[0], (char* const*) args
);
1609 log_error_errno(errno
, "Failed to execute /bin/sh, giving up: %m");
1611 log_warning_errno(r
, "Failed to execute /sbin/init, giving up: %m");
1613 *ret_error_message
= "Failed to execute fallback shell";
1616 static int invoke_main_loop(
1618 bool *ret_reexecute
,
1619 int *ret_retval
, /* Return parameters relevant for shutting down */
1620 const char **ret_shutdown_verb
, /* … */
1621 FDSet
**ret_fds
, /* Return parameters for reexecuting */
1622 char **ret_switch_root_dir
, /* … */
1623 char **ret_switch_root_init
, /* … */
1624 const char **ret_error_message
) {
1629 assert(ret_reexecute
);
1631 assert(ret_shutdown_verb
);
1633 assert(ret_switch_root_dir
);
1634 assert(ret_switch_root_init
);
1635 assert(ret_error_message
);
1638 r
= manager_loop(m
);
1640 *ret_error_message
= "Failed to run main loop";
1641 return log_emergency_errno(r
, "Failed to run main loop: %m");
1644 switch (m
->exit_code
) {
1646 case MANAGER_RELOAD
: {
1647 LogTarget saved_log_target
;
1648 int saved_log_level
;
1650 log_info("Reloading.");
1652 /* First, save any overridden log level/target, then parse the configuration file, which might
1653 * change the log level to new settings. */
1655 saved_log_level
= m
->log_level_overridden
? log_get_max_level() : -1;
1656 saved_log_target
= m
->log_target_overridden
? log_get_target() : _LOG_TARGET_INVALID
;
1658 r
= parse_config_file();
1660 log_warning_errno(r
, "Failed to parse config file, ignoring: %m");
1662 set_manager_defaults(m
);
1664 if (saved_log_level
>= 0)
1665 manager_override_log_level(m
, saved_log_level
);
1666 if (saved_log_target
>= 0)
1667 manager_override_log_target(m
, saved_log_target
);
1669 r
= manager_reload(m
);
1671 log_warning_errno(r
, "Failed to reload, ignoring: %m");
1676 case MANAGER_REEXECUTE
:
1678 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, false);
1680 *ret_error_message
= "Failed to prepare for reexecution";
1684 log_notice("Reexecuting.");
1686 *ret_reexecute
= true;
1687 *ret_retval
= EXIT_SUCCESS
;
1688 *ret_shutdown_verb
= NULL
;
1689 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1693 case MANAGER_SWITCH_ROOT
:
1694 if (!m
->switch_root_init
) {
1695 r
= prepare_reexecute(m
, &arg_serialization
, ret_fds
, true);
1697 *ret_error_message
= "Failed to prepare for reexecution";
1703 log_notice("Switching root.");
1705 *ret_reexecute
= true;
1706 *ret_retval
= EXIT_SUCCESS
;
1707 *ret_shutdown_verb
= NULL
;
1709 /* Steal the switch root parameters */
1710 *ret_switch_root_dir
= m
->switch_root
;
1711 *ret_switch_root_init
= m
->switch_root_init
;
1712 m
->switch_root
= m
->switch_root_init
= NULL
;
1718 if (MANAGER_IS_USER(m
)) {
1721 *ret_reexecute
= false;
1722 *ret_retval
= m
->return_value
;
1723 *ret_shutdown_verb
= NULL
;
1725 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1731 case MANAGER_REBOOT
:
1732 case MANAGER_POWEROFF
:
1734 case MANAGER_KEXEC
: {
1735 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1736 [MANAGER_EXIT
] = "exit",
1737 [MANAGER_REBOOT
] = "reboot",
1738 [MANAGER_POWEROFF
] = "poweroff",
1739 [MANAGER_HALT
] = "halt",
1740 [MANAGER_KEXEC
] = "kexec"
1743 log_notice("Shutting down.");
1745 *ret_reexecute
= false;
1746 *ret_retval
= m
->return_value
;
1747 assert_se(*ret_shutdown_verb
= table
[m
->exit_code
]);
1749 *ret_switch_root_dir
= *ret_switch_root_init
= NULL
;
1755 assert_not_reached("Unknown exit code.");
1760 static void log_execution_mode(bool *ret_first_boot
) {
1761 assert(ret_first_boot
);
1766 log_info(PACKAGE_STRING
" running in %ssystem mode. (" SYSTEMD_FEATURES
")",
1767 arg_action
== ACTION_TEST
? "test " : "" );
1769 v
= detect_virtualization();
1771 log_info("Detected virtualization %s.", virtualization_to_string(v
));
1773 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1776 *ret_first_boot
= false;
1777 log_info("Running in initial RAM disk.");
1779 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1780 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1781 * doesn't it's unpopulated. This allows container managers and installers to provision a
1782 * couple of files already. If the container manager wants to provision the machine ID itself
1783 * it should pass $container_uuid to PID 1. */
1785 *ret_first_boot
= access("/etc/machine-id", F_OK
) < 0;
1786 if (*ret_first_boot
)
1787 log_info("Running with unpopulated /etc.");
1790 if (DEBUG_LOGGING
) {
1791 _cleanup_free_
char *t
;
1793 t
= uid_to_name(getuid());
1794 log_debug(PACKAGE_STRING
" running in %suser mode for user " UID_FMT
"/%s. (" SYSTEMD_FEATURES
")",
1795 arg_action
== ACTION_TEST
? " test" : "", getuid(), strna(t
));
1798 *ret_first_boot
= false;
1802 static int initialize_runtime(
1804 struct rlimit
*saved_rlimit_nofile
,
1805 struct rlimit
*saved_rlimit_memlock
,
1806 const char **ret_error_message
) {
1810 assert(ret_error_message
);
1812 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1814 * - Some only apply to --system instances
1815 * - Some only apply to --user instances
1816 * - Some only apply when we first start up, but not when we reexecute
1819 if (arg_action
!= ACTION_RUN
)
1823 /* Make sure we leave a core dump without panicing the kernel. */
1824 install_crash_handler();
1827 r
= mount_cgroup_controllers(arg_join_controllers
);
1829 *ret_error_message
= "Failed to mount cgroup hierarchies";
1835 machine_id_setup(NULL
, arg_machine_id
, NULL
);
1837 bump_unix_max_dgram_qlen();
1839 write_container_id();
1842 if (arg_watchdog_device
) {
1843 r
= watchdog_set_device(arg_watchdog_device
);
1845 log_warning_errno(r
, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device
);
1848 if (arg_runtime_watchdog
> 0 && arg_runtime_watchdog
!= USEC_INFINITY
)
1849 watchdog_set_timeout(&arg_runtime_watchdog
);
1852 if (arg_timer_slack_nsec
!= NSEC_INFINITY
)
1853 if (prctl(PR_SET_TIMERSLACK
, arg_timer_slack_nsec
) < 0)
1854 log_warning_errno(errno
, "Failed to adjust timer slack, ignoring: %m");
1856 if (arg_system
&& !cap_test_all(arg_capability_bounding_set
)) {
1857 r
= capability_bounding_set_drop_usermode(arg_capability_bounding_set
);
1859 *ret_error_message
= "Failed to drop capability bounding set of usermode helpers";
1860 return log_emergency_errno(r
, "Failed to drop capability bounding set of usermode helpers: %m");
1863 r
= capability_bounding_set_drop(arg_capability_bounding_set
, true);
1865 *ret_error_message
= "Failed to drop capability bounding set";
1866 return log_emergency_errno(r
, "Failed to drop capability bounding set: %m");
1870 if (arg_system
&& arg_no_new_privs
) {
1871 if (prctl(PR_SET_NO_NEW_PRIVS
, 1, 0, 0, 0) < 0) {
1872 *ret_error_message
= "Failed to disable new privileges";
1873 return log_emergency_errno(errno
, "Failed to disable new privileges: %m");
1877 if (arg_syscall_archs
) {
1878 r
= enforce_syscall_archs(arg_syscall_archs
);
1880 *ret_error_message
= "Failed to set syscall architectures";
1886 /* Become reaper of our children */
1887 if (prctl(PR_SET_CHILD_SUBREAPER
, 1) < 0)
1888 log_warning_errno(errno
, "Failed to make us a subreaper: %m");
1891 /* Bump up RLIMIT_NOFILE for systemd itself */
1892 (void) bump_rlimit_nofile(saved_rlimit_nofile
);
1893 (void) bump_rlimit_memlock(saved_rlimit_memlock
);
1899 static int do_queue_default_job(
1901 const char **ret_error_message
) {
1903 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1904 Job
*default_unit_job
;
1905 Unit
*target
= NULL
;
1908 log_debug("Activating default unit: %s", arg_default_unit
);
1910 r
= manager_load_startable_unit_or_warn(m
, arg_default_unit
, NULL
, &target
);
1912 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET
);
1914 r
= manager_load_startable_unit_or_warn(m
, SPECIAL_RESCUE_TARGET
, NULL
, &target
);
1916 *ret_error_message
= r
== -ERFKILL
? "Rescue target masked"
1917 : "Failed to load rescue target";
1922 assert(target
->load_state
== UNIT_LOADED
);
1924 r
= manager_add_job(m
, JOB_START
, target
, JOB_ISOLATE
, &error
, &default_unit_job
);
1926 log_debug_errno(r
, "Default target could not be isolated, starting instead: %s", bus_error_message(&error
, r
));
1928 sd_bus_error_free(&error
);
1930 r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, &error
, &default_unit_job
);
1932 *ret_error_message
= "Failed to start default target";
1933 return log_emergency_errno(r
, "Failed to start default target: %s", bus_error_message(&error
, r
));
1937 *ret_error_message
= "Failed to isolate default target";
1938 return log_emergency_errno(r
, "Failed to isolate default target: %s", bus_error_message(&error
, r
));
1941 m
->default_unit_job_id
= default_unit_job
->id
;
1946 static void free_arguments(void) {
1948 /* Frees all arg_* variables, with the exception of arg_serialization */
1949 rlimit_free_all(arg_default_rlimit
);
1951 arg_default_unit
= mfree(arg_default_unit
);
1952 arg_confirm_spawn
= mfree(arg_confirm_spawn
);
1953 arg_join_controllers
= strv_free_free(arg_join_controllers
);
1954 arg_default_environment
= strv_free(arg_default_environment
);
1955 arg_syscall_archs
= set_free(arg_syscall_archs
);
1958 static int load_configuration(int argc
, char **argv
, const char **ret_error_message
) {
1961 assert(ret_error_message
);
1963 arg_default_tasks_max
= system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE
, 100U);
1965 r
= parse_config_file();
1967 *ret_error_message
= "Failed to parse config file";
1972 r
= proc_cmdline_parse(parse_proc_cmdline_item
, NULL
, 0);
1974 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
1977 /* Note that this also parses bits from the kernel command line, including "debug". */
1978 log_parse_environment();
1980 r
= parse_argv(argc
, argv
);
1982 *ret_error_message
= "Failed to parse commandline arguments";
1986 /* Initialize default unit */
1987 if (!arg_default_unit
) {
1988 arg_default_unit
= strdup(SPECIAL_DEFAULT_TARGET
);
1989 if (!arg_default_unit
) {
1990 *ret_error_message
= "Failed to set default unit";
1995 /* Initialize the show status setting if it hasn't been set explicitly yet */
1996 if (arg_show_status
== _SHOW_STATUS_INVALID
)
1997 arg_show_status
= SHOW_STATUS_YES
;
2002 static int safety_checks(void) {
2004 if (getpid_cached() == 1 &&
2005 arg_action
!= ACTION_RUN
) {
2006 log_error("Unsupported execution mode while PID 1.");
2010 if (getpid_cached() == 1 &&
2012 log_error("Can't run --user mode as PID 1.");
2016 if (arg_action
== ACTION_RUN
&&
2018 getpid_cached() != 1) {
2019 log_error("Can't run system mode unless PID 1.");
2023 if (arg_action
== ACTION_TEST
&&
2025 log_error("Don't run test mode as root.");
2030 arg_action
== ACTION_RUN
&&
2032 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2037 arg_action
== ACTION_RUN
&&
2038 !getenv("XDG_RUNTIME_DIR")) {
2039 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2044 arg_action
== ACTION_RUN
&&
2045 running_in_chroot() > 0) {
2046 log_error("Cannot be run in a chroot() environment.");
2053 static int initialize_security(
2054 bool *loaded_policy
,
2055 dual_timestamp
*security_start_timestamp
,
2056 dual_timestamp
*security_finish_timestamp
,
2057 const char **ret_error_message
) {
2061 assert(loaded_policy
);
2062 assert(security_start_timestamp
);
2063 assert(security_finish_timestamp
);
2064 assert(ret_error_message
);
2066 dual_timestamp_get(security_start_timestamp
);
2068 r
= mac_selinux_setup(loaded_policy
);
2070 *ret_error_message
= "Failed to load SELinux policy";
2074 r
= mac_smack_setup(loaded_policy
);
2076 *ret_error_message
= "Failed to load SMACK policy";
2082 *ret_error_message
= "Failed to load IMA policy";
2086 dual_timestamp_get(security_finish_timestamp
);
2090 static void test_summary(Manager
*m
) {
2093 printf("-> By units:\n");
2094 manager_dump_units(m
, stdout
, "\t");
2096 printf("-> By jobs:\n");
2097 manager_dump_jobs(m
, stdout
, "\t");
2100 static int collect_fds(FDSet
**ret_fds
, const char **ret_error_message
) {
2104 assert(ret_error_message
);
2106 r
= fdset_new_fill(ret_fds
);
2108 *ret_error_message
= "Failed to allocate fd set";
2109 return log_emergency_errno(r
, "Failed to allocate fd set: %m");
2112 fdset_cloexec(*ret_fds
, true);
2114 if (arg_serialization
)
2115 assert_se(fdset_remove(*ret_fds
, fileno(arg_serialization
)) >= 0);
2120 static void setup_console_terminal(bool skip_setup
) {
2125 /* Become a session leader if we aren't one yet. */
2128 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2130 (void) release_terminal();
2132 /* Reset the console, but only if this is really init and we are freshly booted */
2133 if (getpid_cached() == 1 && !skip_setup
)
2134 (void) console_setup();
2137 static bool early_skip_setup_check(int argc
, char *argv
[]) {
2138 bool found_deserialize
= false;
2141 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2142 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2143 * anyway, even if in that case we also do deserialization. */
2145 for (i
= 1; i
< argc
; i
++) {
2146 if (streq(argv
[i
], "--switched-root"))
2147 return false; /* If we switched root, don't skip the setup. */
2148 else if (streq(argv
[i
], "--deserialize"))
2149 found_deserialize
= true;
2152 return found_deserialize
; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2155 int main(int argc
, char *argv
[]) {
2157 dual_timestamp initrd_timestamp
= DUAL_TIMESTAMP_NULL
, userspace_timestamp
= DUAL_TIMESTAMP_NULL
, kernel_timestamp
= DUAL_TIMESTAMP_NULL
,
2158 security_start_timestamp
= DUAL_TIMESTAMP_NULL
, security_finish_timestamp
= DUAL_TIMESTAMP_NULL
;
2159 struct rlimit saved_rlimit_nofile
= RLIMIT_MAKE_CONST(0), saved_rlimit_memlock
= RLIMIT_MAKE_CONST((rlim_t
) -1);
2160 bool skip_setup
, loaded_policy
= false, queue_default_job
= false, first_boot
= false, reexecute
= false;
2161 char *switch_root_dir
= NULL
, *switch_root_init
= NULL
;
2162 usec_t before_startup
, after_startup
;
2163 static char systemd
[] = "systemd";
2164 char timespan
[FORMAT_TIMESPAN_MAX
];
2165 const char *shutdown_verb
= NULL
, *error_message
= NULL
;
2166 int r
, retval
= EXIT_FAILURE
;
2170 /* SysV compatibility: redirect init → telinit */
2171 redirect_telinit(argc
, argv
);
2173 /* Take timestamps early on */
2174 dual_timestamp_from_monotonic(&kernel_timestamp
, 0);
2175 dual_timestamp_get(&userspace_timestamp
);
2177 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2179 skip_setup
= early_skip_setup_check(argc
, argv
);
2181 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2182 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
2183 program_invocation_short_name
= systemd
;
2184 (void) prctl(PR_SET_NAME
, systemd
);
2186 /* Save the original command line */
2190 /* Make sure that if the user says "syslog" we actually log to the journal. */
2191 log_set_upgrade_syslog_to_journal(true);
2193 if (getpid_cached() == 1) {
2194 /* When we run as PID 1 force system mode */
2197 /* Disable the umask logic */
2200 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be
2201 * activated yet (even though the log socket for it exists). */
2202 log_set_prohibit_ipc(true);
2204 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2205 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2206 * child process right before execve()'ing the actual binary, at a point in time where socket
2207 * activation stderr/stdout area already set up. */
2208 log_set_always_reopen_console(true);
2210 if (detect_container() <= 0) {
2212 /* Running outside of a container as PID 1 */
2213 log_set_target(LOG_TARGET_KMSG
);
2217 initrd_timestamp
= userspace_timestamp
;
2220 r
= mount_setup_early();
2222 error_message
= "Failed to mount early API filesystems";
2226 r
= initialize_security(
2228 &security_start_timestamp
,
2229 &security_finish_timestamp
,
2235 if (mac_selinux_init() < 0) {
2236 error_message
= "Failed to initialize SELinux policy";
2243 /* Set the default for later on, but don't actually open the logs like this for now. Note that
2244 * if we are transitioning from the initrd there might still be journal fd open, and we
2245 * shouldn't attempt opening that before we parsed /proc/cmdline which might redirect output
2247 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
2250 /* Running inside a container, as PID 1 */
2251 log_set_target(LOG_TARGET_CONSOLE
);
2254 /* For later on, see above... */
2255 log_set_target(LOG_TARGET_JOURNAL
);
2257 /* clear the kernel timestamp,
2258 * because we are in a container */
2259 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2262 initialize_coredump(skip_setup
);
2264 r
= fixup_environment();
2266 log_emergency_errno(r
, "Failed to fix up PID 1 environment: %m");
2267 error_message
= "Failed to fix up PID1 environment";
2272 /* Running as user instance */
2274 log_set_target(LOG_TARGET_AUTO
);
2277 /* clear the kernel timestamp,
2278 * because we are not PID 1 */
2279 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
2283 /* Try to figure out if we can use colors with the console. No need to do that for user instances since
2284 * they never log into the console. */
2285 log_show_color(colors_enabled());
2287 r
= make_null_stdio();
2289 log_warning_errno(r
, "Failed to redirect standard streams to /dev/null, ignoring: %m");
2292 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2293 * /proc/$PID/fd is available. */
2294 if (getpid_cached() == 1) {
2296 /* Load the kernel modules early. */
2300 r
= mount_setup(loaded_policy
);
2302 error_message
= "Failed to mount API filesystems";
2307 /* Reset all signal handlers. */
2308 (void) reset_all_signal_handlers();
2309 (void) ignore_signals(SIGNALS_IGNORE
, -1);
2311 r
= load_configuration(argc
, argv
, &error_message
);
2315 r
= safety_checks();
2319 if (IN_SET(arg_action
, ACTION_TEST
, ACTION_HELP
, ACTION_DUMP_CONFIGURATION_ITEMS
, ACTION_DUMP_BUS_PROPERTIES
))
2320 (void) pager_open(arg_no_pager
, false);
2322 if (arg_action
!= ACTION_RUN
)
2325 if (arg_action
== ACTION_HELP
) {
2326 retval
= help() < 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;
2328 } else if (arg_action
== ACTION_VERSION
) {
2331 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
2332 unit_dump_config_items(stdout
);
2333 retval
= EXIT_SUCCESS
;
2335 } else if (arg_action
== ACTION_DUMP_BUS_PROPERTIES
) {
2336 dump_bus_properties(stdout
);
2337 retval
= EXIT_SUCCESS
;
2341 assert_se(IN_SET(arg_action
, ACTION_RUN
, ACTION_TEST
));
2343 /* Move out of the way, so that we won't block unmounts */
2344 assert_se(chdir("/") == 0);
2346 if (arg_action
== ACTION_RUN
) {
2348 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
2351 /* Remember open file descriptors for later deserialization */
2352 r
= collect_fds(&fds
, &error_message
);
2356 /* Give up any control of the console, but make sure its initialized. */
2357 setup_console_terminal(skip_setup
);
2359 /* Open the logging devices, if possible and necessary */
2363 log_execution_mode(&first_boot
);
2365 r
= initialize_runtime(skip_setup
,
2366 &saved_rlimit_nofile
,
2367 &saved_rlimit_memlock
,
2372 r
= manager_new(arg_system
? UNIT_FILE_SYSTEM
: UNIT_FILE_USER
,
2373 arg_action
== ACTION_TEST
? MANAGER_TEST_FULL
: 0,
2376 log_emergency_errno(r
, "Failed to allocate manager object: %m");
2377 error_message
= "Failed to allocate manager object";
2381 m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
] = kernel_timestamp
;
2382 m
->timestamps
[MANAGER_TIMESTAMP_INITRD
] = initrd_timestamp
;
2383 m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
] = userspace_timestamp
;
2384 m
->timestamps
[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_START
)] = security_start_timestamp
;
2385 m
->timestamps
[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_FINISH
)] = security_finish_timestamp
;
2387 set_manager_defaults(m
);
2388 set_manager_settings(m
);
2389 manager_set_first_boot(m
, first_boot
);
2391 /* Remember whether we should queue the default job */
2392 queue_default_job
= !arg_serialization
|| arg_switched_root
;
2394 before_startup
= now(CLOCK_MONOTONIC
);
2396 r
= manager_startup(m
, arg_serialization
, fds
);
2398 log_error_errno(r
, "Failed to fully start up daemon: %m");
2399 error_message
= "Failed to start up manager";
2403 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2404 fds
= fdset_free(fds
);
2405 arg_serialization
= safe_fclose(arg_serialization
);
2407 if (queue_default_job
) {
2408 r
= do_queue_default_job(m
, &error_message
);
2413 after_startup
= now(CLOCK_MONOTONIC
);
2415 log_full(arg_action
== ACTION_TEST
? LOG_INFO
: LOG_DEBUG
,
2416 "Loaded units and determined initial transaction in %s.",
2417 format_timespan(timespan
, sizeof(timespan
), after_startup
- before_startup
, 100 * USEC_PER_MSEC
));
2419 if (arg_action
== ACTION_TEST
) {
2421 retval
= EXIT_SUCCESS
;
2425 (void) invoke_main_loop(m
,
2438 arg_shutdown_watchdog
= m
->shutdown_watchdog
;
2439 m
= manager_free(m
);
2443 mac_selinux_finish();
2446 do_reexecute(argc
, argv
,
2447 &saved_rlimit_nofile
,
2448 &saved_rlimit_memlock
,
2452 &error_message
); /* This only returns if reexecution failed */
2454 arg_serialization
= safe_fclose(arg_serialization
);
2455 fds
= fdset_free(fds
);
2457 #if HAVE_VALGRIND_VALGRIND_H
2458 /* If we are PID 1 and running under valgrind, then let's exit
2459 * here explicitly. valgrind will only generate nice output on
2460 * exit(), not on exec(), hence let's do the former not the
2462 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND
) {
2463 /* Cleanup watchdog_device strings for valgrind. We need them
2464 * in become_shutdown() so normally we cannot free them yet. */
2465 watchdog_free_device();
2466 arg_watchdog_device
= mfree(arg_watchdog_device
);
2471 if (shutdown_verb
) {
2472 r
= become_shutdown(shutdown_verb
, retval
);
2473 log_error_errno(r
, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
2474 error_message
= "Failed to execute shutdown binary";
2477 watchdog_free_device();
2478 arg_watchdog_device
= mfree(arg_watchdog_device
);
2480 if (getpid_cached() == 1) {
2482 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
2483 ANSI_HIGHLIGHT_RED
"!!!!!!" ANSI_NORMAL
,
2484 "%s, freezing.", error_message
);