1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 #include <sys/prctl.h>
31 #include <sys/mount.h>
33 #ifdef HAVE_VALGRIND_VALGRIND_H
34 #include <valgrind/valgrind.h>
40 #include "sd-daemon.h"
45 #include "conf-parser.h"
52 #include "architecture.h"
54 #include "switch-root.h"
55 #include "capability.h"
58 #include "clock-util.h"
60 #include "bus-error.h"
62 #include "selinux-util.h"
63 #include "formats-util.h"
64 #include "process-util.h"
65 #include "terminal-util.h"
66 #include "signal-util.h"
68 #include "dbus-manager.h"
69 #include "load-fragment.h"
71 #include "mount-setup.h"
72 #include "loopback-setup.h"
73 #include "hostname-setup.h"
74 #include "machine-id-setup.h"
75 #include "selinux-setup.h"
76 #include "ima-setup.h"
77 #include "smack-setup.h"
78 #include "kmod-setup.h"
85 ACTION_DUMP_CONFIGURATION_ITEMS
,
87 } arg_action
= ACTION_RUN
;
88 static char *arg_default_unit
= NULL
;
89 static ManagerRunningAs arg_running_as
= _MANAGER_RUNNING_AS_INVALID
;
90 static bool arg_dump_core
= true;
91 static bool arg_crash_shell
= false;
92 static int arg_crash_chvt
= -1;
93 static bool arg_confirm_spawn
= false;
94 static ShowStatus arg_show_status
= _SHOW_STATUS_UNSET
;
95 static bool arg_switched_root
= false;
96 static int arg_no_pager
= -1;
97 static char ***arg_join_controllers
= NULL
;
98 static ExecOutput arg_default_std_output
= EXEC_OUTPUT_JOURNAL
;
99 static ExecOutput arg_default_std_error
= EXEC_OUTPUT_INHERIT
;
100 static usec_t arg_default_restart_usec
= DEFAULT_RESTART_USEC
;
101 static usec_t arg_default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
;
102 static usec_t arg_default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
;
103 static usec_t arg_default_start_limit_interval
= DEFAULT_START_LIMIT_INTERVAL
;
104 static unsigned arg_default_start_limit_burst
= DEFAULT_START_LIMIT_BURST
;
105 static usec_t arg_runtime_watchdog
= 0;
106 static usec_t arg_shutdown_watchdog
= 10 * USEC_PER_MINUTE
;
107 static char **arg_default_environment
= NULL
;
108 static struct rlimit
*arg_default_rlimit
[_RLIMIT_MAX
] = {};
109 static uint64_t arg_capability_bounding_set_drop
= 0;
110 static nsec_t arg_timer_slack_nsec
= NSEC_INFINITY
;
111 static usec_t arg_default_timer_accuracy_usec
= 1 * USEC_PER_MINUTE
;
112 static Set
* arg_syscall_archs
= NULL
;
113 static FILE* arg_serialization
= NULL
;
114 static bool arg_default_cpu_accounting
= false;
115 static bool arg_default_blockio_accounting
= false;
116 static bool arg_default_memory_accounting
= false;
117 static bool arg_default_tasks_accounting
= false;
119 static void nop_handler(int sig
) {}
121 static void pager_open_if_enabled(void) {
123 if (arg_no_pager
<= 0)
129 noreturn
static void crash(int sig
) {
132 /* Pass this on immediately, if this is not PID 1 */
134 else if (!arg_dump_core
)
135 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig
));
137 struct sigaction sa
= {
138 .sa_handler
= nop_handler
,
139 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
143 /* We want to wait for the core process, hence let's enable SIGCHLD */
144 sigaction(SIGCHLD
, &sa
, NULL
);
146 pid
= raw_clone(SIGCHLD
, NULL
);
148 log_emergency_errno(errno
, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig
));
151 struct rlimit rl
= {};
153 /* Enable default signal handler for core dump */
155 sa
.sa_handler
= SIG_DFL
;
156 sigaction(sig
, &sa
, NULL
);
158 /* Don't limit the core dump size */
159 rl
.rlim_cur
= RLIM_INFINITY
;
160 rl
.rlim_max
= RLIM_INFINITY
;
161 setrlimit(RLIMIT_CORE
, &rl
);
163 /* Just to be sure... */
166 /* Raise the signal again */
168 kill(pid
, sig
); /* raise() would kill the parent */
170 assert_not_reached("We shouldn't be here...");
176 /* Order things nicely. */
177 r
= wait_for_terminate(pid
, &status
);
179 log_emergency_errno(r
, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig
));
180 else if (status
.si_code
!= CLD_DUMPED
)
181 log_emergency("Caught <%s>, core dump failed (child "PID_FMT
", code=%s, status=%i/%s).",
182 signal_to_string(sig
),
183 pid
, sigchld_code_to_string(status
.si_code
),
185 strna(status
.si_code
== CLD_EXITED
186 ? exit_status_to_string(status
.si_status
, EXIT_STATUS_FULL
)
187 : signal_to_string(status
.si_status
)));
189 log_emergency("Caught <%s>, dumped core as pid "PID_FMT
".", signal_to_string(sig
), pid
);
194 chvt(arg_crash_chvt
);
196 if (arg_crash_shell
) {
197 struct sigaction sa
= {
198 .sa_handler
= SIG_IGN
,
199 .sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
,
203 log_info("Executing crash shell in 10s...");
206 /* Let the kernel reap children for us */
207 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
209 pid
= raw_clone(SIGCHLD
, NULL
);
211 log_emergency_errno(errno
, "Failed to fork off crash shell: %m");
213 make_console_stdio();
214 execle("/bin/sh", "/bin/sh", NULL
, environ
);
216 log_emergency_errno(errno
, "execle() failed: %m");
219 log_info("Successfully spawned crash shell as PID "PID_FMT
".", pid
);
222 log_emergency("Freezing execution.");
226 static void install_crash_handler(void) {
227 static const struct sigaction sa
= {
229 .sa_flags
= SA_NODEFER
, /* So that we can raise the signal again from the signal handler */
233 /* We ignore the return value here, since, we don't mind if we
234 * cannot set up a crash handler */
235 r
= sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
237 log_debug_errno(r
, "I had trouble setting up the crash handler, ignoring: %m");
240 static int console_setup(void) {
241 _cleanup_close_
int tty_fd
= -1;
244 tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
);
246 return log_error_errno(tty_fd
, "Failed to open /dev/console: %m");
248 /* We don't want to force text mode. plymouth may be showing
249 * pictures already from initrd. */
250 r
= reset_terminal_fd(tty_fd
, false);
252 return log_error_errno(r
, "Failed to reset /dev/console: %m");
257 static int set_default_unit(const char *u
) {
266 free(arg_default_unit
);
267 arg_default_unit
= c
;
272 static int parse_proc_cmdline_item(const char *key
, const char *value
) {
274 static const char * const rlmap
[] = {
275 "emergency", SPECIAL_EMERGENCY_TARGET
,
276 "-b", SPECIAL_EMERGENCY_TARGET
,
277 "rescue", SPECIAL_RESCUE_TARGET
,
278 "single", SPECIAL_RESCUE_TARGET
,
279 "-s", SPECIAL_RESCUE_TARGET
,
280 "s", SPECIAL_RESCUE_TARGET
,
281 "S", SPECIAL_RESCUE_TARGET
,
282 "1", SPECIAL_RESCUE_TARGET
,
283 "2", SPECIAL_MULTI_USER_TARGET
,
284 "3", SPECIAL_MULTI_USER_TARGET
,
285 "4", SPECIAL_MULTI_USER_TARGET
,
286 "5", SPECIAL_GRAPHICAL_TARGET
,
292 if (streq(key
, "systemd.unit") && value
) {
295 return set_default_unit(value
);
297 } else if (streq(key
, "rd.systemd.unit") && value
) {
300 return set_default_unit(value
);
302 } else if (streq(key
, "systemd.dump_core") && value
) {
304 r
= parse_boolean(value
);
306 log_warning("Failed to parse dump core switch %s. Ignoring.", value
);
310 } else if (streq(key
, "systemd.crash_shell") && value
) {
312 r
= parse_boolean(value
);
314 log_warning("Failed to parse crash shell switch %s. Ignoring.", value
);
318 } else if (streq(key
, "systemd.crash_chvt") && value
) {
320 if (safe_atoi(value
, &r
) < 0)
321 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value
);
325 } else if (streq(key
, "systemd.confirm_spawn") && value
) {
327 r
= parse_boolean(value
);
329 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", value
);
331 arg_confirm_spawn
= r
;
333 } else if (streq(key
, "systemd.show_status") && value
) {
335 r
= parse_show_status(value
, &arg_show_status
);
337 log_warning("Failed to parse show status switch %s. Ignoring.", value
);
339 } else if (streq(key
, "systemd.default_standard_output") && value
) {
341 r
= exec_output_from_string(value
);
343 log_warning("Failed to parse default standard output switch %s. Ignoring.", value
);
345 arg_default_std_output
= r
;
347 } else if (streq(key
, "systemd.default_standard_error") && value
) {
349 r
= exec_output_from_string(value
);
351 log_warning("Failed to parse default standard error switch %s. Ignoring.", value
);
353 arg_default_std_error
= r
;
355 } else if (streq(key
, "systemd.setenv") && value
) {
357 if (env_assignment_is_valid(value
)) {
360 env
= strv_env_set(arg_default_environment
, value
);
362 arg_default_environment
= env
;
364 log_warning_errno(ENOMEM
, "Setting environment variable '%s' failed, ignoring: %m", value
);
366 log_warning("Environment variable name '%s' is not valid. Ignoring.", value
);
368 } else if (streq(key
, "quiet") && !value
) {
370 if (arg_show_status
== _SHOW_STATUS_UNSET
)
371 arg_show_status
= SHOW_STATUS_AUTO
;
373 } else if (streq(key
, "debug") && !value
) {
375 /* Note that log_parse_environment() handles 'debug'
376 * too, and sets the log level to LOG_DEBUG. */
378 if (detect_container() > 0)
379 log_set_target(LOG_TARGET_CONSOLE
);
381 } else if (!in_initrd() && !value
) {
384 /* SysV compatibility */
385 for (i
= 0; i
< ELEMENTSOF(rlmap
); i
+= 2)
386 if (streq(key
, rlmap
[i
]))
387 return set_default_unit(rlmap
[i
+1]);
393 #define DEFINE_SETTER(name, func, descr) \
394 static int name(const char *unit, \
395 const char *filename, \
397 const char *section, \
398 unsigned section_line, \
399 const char *lvalue, \
401 const char *rvalue, \
413 log_syntax(unit, LOG_ERR, filename, line, -r, \
414 "Invalid " descr "'%s': %s", \
415 rvalue, strerror(-r)); \
420 DEFINE_SETTER(config_parse_level2
, log_set_max_level_from_string
, "log level")
421 DEFINE_SETTER(config_parse_target
, log_set_target_from_string
, "target")
422 DEFINE_SETTER(config_parse_color
, log_show_color_from_string
, "color" )
423 DEFINE_SETTER(config_parse_location
, log_show_location_from_string
, "location")
425 static int config_parse_cpu_affinity2(
427 const char *filename
,
430 unsigned section_line
,
437 const char *whole_rvalue
= rvalue
;
438 _cleanup_cpu_free_ cpu_set_t
*c
= NULL
;
446 _cleanup_free_
char *word
= NULL
;
450 r
= extract_first_word(&rvalue
, &word
, WHITESPACE
, EXTRACT_QUOTES
);
452 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Invalid value for %s: %s", lvalue
, whole_rvalue
);
458 r
= safe_atou(word
, &cpu
);
461 if (!(c
= cpu_set_malloc(&ncpus
)))
464 if (r
< 0 || cpu
>= ncpus
) {
465 log_syntax(unit
, LOG_ERR
, filename
, line
, -r
,
466 "Failed to parse CPU affinity '%s'", rvalue
);
470 CPU_SET_S(cpu
, CPU_ALLOC_SIZE(ncpus
), c
);
472 if (!isempty(rvalue
))
473 log_syntax(unit
, LOG_ERR
, filename
, line
, EINVAL
,
474 "Trailing garbage, ignoring.");
477 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
478 log_warning("Failed to set CPU affinity: %m");
483 static int config_parse_show_status(
485 const char *filename
,
488 unsigned section_line
,
496 ShowStatus
*b
= data
;
503 k
= parse_show_status(rvalue
, b
);
505 log_syntax(unit
, LOG_ERR
, filename
, line
, -k
,
506 "Failed to parse show status setting, ignoring: %s", rvalue
);
513 static void strv_free_free(char ***l
) {
525 static void free_join_controllers(void) {
526 strv_free_free(arg_join_controllers
);
527 arg_join_controllers
= NULL
;
530 static int config_parse_join_controllers(const char *unit
,
531 const char *filename
,
534 unsigned section_line
,
541 const char *whole_rvalue
= rvalue
;
548 free_join_controllers();
551 _cleanup_free_
char *word
= NULL
;
555 r
= extract_first_word(&rvalue
, &word
, WHITESPACE
, EXTRACT_QUOTES
);
557 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Invalid value for %s: %s", lvalue
, whole_rvalue
);
563 l
= strv_split(word
, ",");
568 if (strv_length(l
) <= 1) {
573 if (!arg_join_controllers
) {
574 arg_join_controllers
= new(char**, 2);
575 if (!arg_join_controllers
) {
580 arg_join_controllers
[0] = l
;
581 arg_join_controllers
[1] = NULL
;
588 t
= new0(char**, n
+2);
596 for (a
= arg_join_controllers
; *a
; a
++) {
598 if (strv_overlap(*a
, l
)) {
599 if (strv_extend_strv(&l
, *a
) < 0) {
619 t
[n
++] = strv_uniq(l
);
621 strv_free_free(arg_join_controllers
);
622 arg_join_controllers
= t
;
625 if (!isempty(rvalue
))
626 log_syntax(unit
, LOG_ERR
, filename
, line
, EINVAL
,
627 "Trailing garbage, ignoring.");
632 static int parse_config_file(void) {
634 const ConfigTableItem items
[] = {
635 { "Manager", "LogLevel", config_parse_level2
, 0, NULL
},
636 { "Manager", "LogTarget", config_parse_target
, 0, NULL
},
637 { "Manager", "LogColor", config_parse_color
, 0, NULL
},
638 { "Manager", "LogLocation", config_parse_location
, 0, NULL
},
639 { "Manager", "DumpCore", config_parse_bool
, 0, &arg_dump_core
},
640 { "Manager", "CrashShell", config_parse_bool
, 0, &arg_crash_shell
},
641 { "Manager", "ShowStatus", config_parse_show_status
, 0, &arg_show_status
},
642 { "Manager", "CrashChVT", config_parse_int
, 0, &arg_crash_chvt
},
643 { "Manager", "CPUAffinity", config_parse_cpu_affinity2
, 0, NULL
},
644 { "Manager", "JoinControllers", config_parse_join_controllers
, 0, &arg_join_controllers
},
645 { "Manager", "RuntimeWatchdogSec", config_parse_sec
, 0, &arg_runtime_watchdog
},
646 { "Manager", "ShutdownWatchdogSec", config_parse_sec
, 0, &arg_shutdown_watchdog
},
647 { "Manager", "CapabilityBoundingSet", config_parse_bounding_set
, 0, &arg_capability_bounding_set_drop
},
649 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs
, 0, &arg_syscall_archs
},
651 { "Manager", "TimerSlackNSec", config_parse_nsec
, 0, &arg_timer_slack_nsec
},
652 { "Manager", "DefaultTimerAccuracySec", config_parse_sec
, 0, &arg_default_timer_accuracy_usec
},
653 { "Manager", "DefaultStandardOutput", config_parse_output
, 0, &arg_default_std_output
},
654 { "Manager", "DefaultStandardError", config_parse_output
, 0, &arg_default_std_error
},
655 { "Manager", "DefaultTimeoutStartSec", config_parse_sec
, 0, &arg_default_timeout_start_usec
},
656 { "Manager", "DefaultTimeoutStopSec", config_parse_sec
, 0, &arg_default_timeout_stop_usec
},
657 { "Manager", "DefaultRestartSec", config_parse_sec
, 0, &arg_default_restart_usec
},
658 { "Manager", "DefaultStartLimitInterval", config_parse_sec
, 0, &arg_default_start_limit_interval
},
659 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned
, 0, &arg_default_start_limit_burst
},
660 { "Manager", "DefaultEnvironment", config_parse_environ
, 0, &arg_default_environment
},
661 { "Manager", "DefaultLimitCPU", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_CPU
] },
662 { "Manager", "DefaultLimitFSIZE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_FSIZE
] },
663 { "Manager", "DefaultLimitDATA", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_DATA
] },
664 { "Manager", "DefaultLimitSTACK", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_STACK
] },
665 { "Manager", "DefaultLimitCORE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_CORE
] },
666 { "Manager", "DefaultLimitRSS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RSS
] },
667 { "Manager", "DefaultLimitNOFILE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NOFILE
] },
668 { "Manager", "DefaultLimitAS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_AS
] },
669 { "Manager", "DefaultLimitNPROC", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NPROC
] },
670 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_MEMLOCK
] },
671 { "Manager", "DefaultLimitLOCKS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_LOCKS
] },
672 { "Manager", "DefaultLimitSIGPENDING", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_SIGPENDING
] },
673 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_MSGQUEUE
] },
674 { "Manager", "DefaultLimitNICE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NICE
] },
675 { "Manager", "DefaultLimitRTPRIO", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RTPRIO
] },
676 { "Manager", "DefaultLimitRTTIME", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RTTIME
] },
677 { "Manager", "DefaultCPUAccounting", config_parse_bool
, 0, &arg_default_cpu_accounting
},
678 { "Manager", "DefaultBlockIOAccounting", config_parse_bool
, 0, &arg_default_blockio_accounting
},
679 { "Manager", "DefaultMemoryAccounting", config_parse_bool
, 0, &arg_default_memory_accounting
},
680 { "Manager", "DefaultTasksAccounting", config_parse_bool
, 0, &arg_default_tasks_accounting
},
684 const char *fn
, *conf_dirs_nulstr
;
686 fn
= arg_running_as
== MANAGER_SYSTEM
? PKGSYSCONFDIR
"/system.conf" : PKGSYSCONFDIR
"/user.conf";
687 conf_dirs_nulstr
= arg_running_as
== MANAGER_SYSTEM
? CONF_DIRS_NULSTR("systemd/system.conf") : CONF_DIRS_NULSTR("systemd/user.conf");
688 config_parse_many(fn
, conf_dirs_nulstr
, "Manager\0",
689 config_item_table_lookup
, items
, false, NULL
);
694 static void manager_set_defaults(Manager
*m
) {
698 m
->default_timer_accuracy_usec
= arg_default_timer_accuracy_usec
;
699 m
->default_std_output
= arg_default_std_output
;
700 m
->default_std_error
= arg_default_std_error
;
701 m
->default_timeout_start_usec
= arg_default_timeout_start_usec
;
702 m
->default_timeout_stop_usec
= arg_default_timeout_stop_usec
;
703 m
->default_restart_usec
= arg_default_restart_usec
;
704 m
->default_start_limit_interval
= arg_default_start_limit_interval
;
705 m
->default_start_limit_burst
= arg_default_start_limit_burst
;
706 m
->default_cpu_accounting
= arg_default_cpu_accounting
;
707 m
->default_blockio_accounting
= arg_default_blockio_accounting
;
708 m
->default_memory_accounting
= arg_default_memory_accounting
;
709 m
->default_tasks_accounting
= arg_default_tasks_accounting
;
711 manager_set_default_rlimits(m
, arg_default_rlimit
);
712 manager_environment_add(m
, NULL
, arg_default_environment
);
715 static int parse_argv(int argc
, char *argv
[]) {
718 ARG_LOG_LEVEL
= 0x100,
728 ARG_DUMP_CONFIGURATION_ITEMS
,
735 ARG_DEFAULT_STD_OUTPUT
,
736 ARG_DEFAULT_STD_ERROR
739 static const struct option options
[] = {
740 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
741 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
742 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
743 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
744 { "unit", required_argument
, NULL
, ARG_UNIT
},
745 { "system", no_argument
, NULL
, ARG_SYSTEM
},
746 { "user", no_argument
, NULL
, ARG_USER
},
747 { "test", no_argument
, NULL
, ARG_TEST
},
748 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
749 { "help", no_argument
, NULL
, 'h' },
750 { "version", no_argument
, NULL
, ARG_VERSION
},
751 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
752 { "dump-core", optional_argument
, NULL
, ARG_DUMP_CORE
},
753 { "crash-shell", optional_argument
, NULL
, ARG_CRASH_SHELL
},
754 { "confirm-spawn", optional_argument
, NULL
, ARG_CONFIRM_SPAWN
},
755 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
756 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
757 { "switched-root", no_argument
, NULL
, ARG_SWITCHED_ROOT
},
758 { "default-standard-output", required_argument
, NULL
, ARG_DEFAULT_STD_OUTPUT
, },
759 { "default-standard-error", required_argument
, NULL
, ARG_DEFAULT_STD_ERROR
, },
771 while ((c
= getopt_long(argc
, argv
, "hDbsz:", options
, NULL
)) >= 0)
776 r
= log_set_max_level_from_string(optarg
);
778 log_error("Failed to parse log level %s.", optarg
);
785 r
= log_set_target_from_string(optarg
);
787 log_error("Failed to parse log target %s.", optarg
);
796 r
= log_show_color_from_string(optarg
);
798 log_error("Failed to parse log color setting %s.", optarg
);
802 log_show_color(true);
806 case ARG_LOG_LOCATION
:
808 r
= log_show_location_from_string(optarg
);
810 log_error("Failed to parse log location setting %s.", optarg
);
814 log_show_location(true);
818 case ARG_DEFAULT_STD_OUTPUT
:
819 r
= exec_output_from_string(optarg
);
821 log_error("Failed to parse default standard output setting %s.", optarg
);
824 arg_default_std_output
= r
;
827 case ARG_DEFAULT_STD_ERROR
:
828 r
= exec_output_from_string(optarg
);
830 log_error("Failed to parse default standard error output setting %s.", optarg
);
833 arg_default_std_error
= r
;
838 r
= set_default_unit(optarg
);
840 return log_error_errno(r
, "Failed to set default unit %s: %m", optarg
);
845 arg_running_as
= MANAGER_SYSTEM
;
849 arg_running_as
= MANAGER_USER
;
853 arg_action
= ACTION_TEST
;
854 if (arg_no_pager
< 0)
863 arg_action
= ACTION_VERSION
;
866 case ARG_DUMP_CONFIGURATION_ITEMS
:
867 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
871 r
= optarg
? parse_boolean(optarg
) : 1;
873 log_error("Failed to parse dump core boolean %s.", optarg
);
879 case ARG_CRASH_SHELL
:
880 r
= optarg
? parse_boolean(optarg
) : 1;
882 log_error("Failed to parse crash shell boolean %s.", optarg
);
888 case ARG_CONFIRM_SPAWN
:
889 r
= optarg
? parse_boolean(optarg
) : 1;
891 log_error("Failed to parse confirm spawn boolean %s.", optarg
);
894 arg_confirm_spawn
= r
;
897 case ARG_SHOW_STATUS
:
899 r
= parse_show_status(optarg
, &arg_show_status
);
901 log_error("Failed to parse show status boolean %s.", optarg
);
905 arg_show_status
= SHOW_STATUS_YES
;
908 case ARG_DESERIALIZE
: {
912 r
= safe_atoi(optarg
, &fd
);
913 if (r
< 0 || fd
< 0) {
914 log_error("Failed to parse deserialize option %s.", optarg
);
915 return r
< 0 ? r
: -EINVAL
;
918 fd_cloexec(fd
, true);
922 return log_error_errno(errno
, "Failed to open serialization fd: %m");
924 safe_fclose(arg_serialization
);
926 arg_serialization
= f
;
931 case ARG_SWITCHED_ROOT
:
932 arg_switched_root
= true;
936 arg_action
= ACTION_HELP
;
937 if (arg_no_pager
< 0)
942 log_set_max_level(LOG_DEBUG
);
948 /* Just to eat away the sysvinit kernel
949 * cmdline args without getopt() error
950 * messages that we'll parse in
951 * parse_proc_cmdline_word() or ignore. */
960 assert_not_reached("Unhandled option code.");
963 if (optind
< argc
&& getpid() != 1) {
964 /* Hmm, when we aren't run as init system
965 * let's complain about excess arguments */
967 log_error("Excess arguments.");
974 static int help(void) {
976 printf("%s [OPTIONS...]\n\n"
977 "Starts up and maintains the system or user services.\n\n"
978 " -h --help Show this help\n"
979 " --test Determine startup sequence, dump it and exit\n"
980 " --no-pager Do not pipe output into a pager\n"
981 " --dump-configuration-items Dump understood unit configuration items\n"
982 " --unit=UNIT Set default unit\n"
983 " --system Run a system instance, even if PID != 1\n"
984 " --user Run a user instance\n"
985 " --dump-core[=0|1] Dump core on crash\n"
986 " --crash-shell[=0|1] Run shell on crash\n"
987 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
988 " --show-status[=0|1] Show status updates on the console during bootup\n"
989 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
990 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
991 " --log-color[=0|1] Highlight important log messages\n"
992 " --log-location[=0|1] Include code location in log messages\n"
993 " --default-standard-output= Set default standard output for services\n"
994 " --default-standard-error= Set default standard error output for services\n",
995 program_invocation_short_name
);
1000 static int version(void) {
1001 puts(PACKAGE_STRING
);
1002 puts(SYSTEMD_FEATURES
);
1007 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
, bool switching_root
) {
1016 r
= manager_open_serialization(m
, &f
);
1018 log_error_errno(r
, "Failed to create serialization file: %m");
1022 /* Make sure nothing is really destructed when we shut down */
1024 bus_manager_send_reloading(m
, true);
1029 log_error_errno(r
, "Failed to allocate fd set: %m");
1033 r
= manager_serialize(m
, f
, fds
, switching_root
);
1035 log_error_errno(r
, "Failed to serialize state: %m");
1039 if (fseeko(f
, 0, SEEK_SET
) < 0) {
1040 log_error_errno(errno
, "Failed to rewind serialization fd: %m");
1044 r
= fd_cloexec(fileno(f
), false);
1046 log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization: %m");
1050 r
= fdset_cloexec(fds
, false);
1052 log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization fds: %m");
1069 static int bump_rlimit_nofile(struct rlimit
*saved_rlimit
) {
1073 assert(saved_rlimit
);
1075 /* Save the original RLIMIT_NOFILE so that we can reset it
1076 * later when transitioning from the initrd to the main
1077 * systemd or suchlike. */
1078 if (getrlimit(RLIMIT_NOFILE
, saved_rlimit
) < 0)
1079 return log_error_errno(errno
, "Reading RLIMIT_NOFILE failed: %m");
1081 /* Make sure forked processes get the default kernel setting */
1082 if (!arg_default_rlimit
[RLIMIT_NOFILE
]) {
1085 rl
= newdup(struct rlimit
, saved_rlimit
, 1);
1089 arg_default_rlimit
[RLIMIT_NOFILE
] = rl
;
1092 /* Bump up the resource limit for ourselves substantially */
1093 nl
.rlim_cur
= nl
.rlim_max
= 64*1024;
1094 r
= setrlimit_closest(RLIMIT_NOFILE
, &nl
);
1096 return log_error_errno(r
, "Setting RLIMIT_NOFILE failed: %m");
1101 static void test_mtab(void) {
1103 static const char ok
[] =
1104 "/proc/self/mounts\0"
1106 "../proc/self/mounts\0"
1109 _cleanup_free_
char *p
= NULL
;
1112 /* Check that /etc/mtab is a symlink to the right place or
1113 * non-existing. But certainly not a file, or a symlink to
1114 * some weird place... */
1116 r
= readlink_malloc("/etc/mtab", &p
);
1119 if (r
>= 0 && nulstr_contains(ok
, p
))
1122 log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1123 "This is not supported anymore. "
1124 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1128 static void test_usr(void) {
1130 /* Check that /usr is not a separate fs */
1132 if (dir_is_empty("/usr") <= 0)
1135 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1136 "Some things will probably break (sometimes even silently) in mysterious ways. "
1137 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1140 static int initialize_join_controllers(void) {
1141 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1142 * + "net_prio". We'd like to add "cpuset" to the mix, but
1143 * "cpuset" doesn't really work for groups with no initialized
1146 arg_join_controllers
= new(char**, 3);
1147 if (!arg_join_controllers
)
1150 arg_join_controllers
[0] = strv_new("cpu", "cpuacct", NULL
);
1151 arg_join_controllers
[1] = strv_new("net_cls", "net_prio", NULL
);
1152 arg_join_controllers
[2] = NULL
;
1154 if (!arg_join_controllers
[0] || !arg_join_controllers
[1]) {
1155 free_join_controllers();
1162 static int enforce_syscall_archs(Set
*archs
) {
1164 scmp_filter_ctx
*seccomp
;
1169 seccomp
= seccomp_init(SCMP_ACT_ALLOW
);
1173 SET_FOREACH(id
, arg_syscall_archs
, i
) {
1174 r
= seccomp_arch_add(seccomp
, PTR_TO_UINT32(id
) - 1);
1178 log_error_errno(r
, "Failed to add architecture to seccomp: %m");
1183 r
= seccomp_attr_set(seccomp
, SCMP_FLTATR_CTL_NNP
, 0);
1185 log_error_errno(r
, "Failed to unset NO_NEW_PRIVS: %m");
1189 r
= seccomp_load(seccomp
);
1191 log_error_errno(r
, "Failed to add install architecture seccomp: %m");
1194 seccomp_release(seccomp
);
1201 static int status_welcome(void) {
1202 _cleanup_free_
char *pretty_name
= NULL
, *ansi_color
= NULL
;
1205 r
= parse_env_file("/etc/os-release", NEWLINE
,
1206 "PRETTY_NAME", &pretty_name
,
1207 "ANSI_COLOR", &ansi_color
,
1210 r
= parse_env_file("/usr/lib/os-release", NEWLINE
,
1211 "PRETTY_NAME", &pretty_name
,
1212 "ANSI_COLOR", &ansi_color
,
1215 if (r
< 0 && r
!= -ENOENT
)
1216 log_warning_errno(r
, "Failed to read os-release file: %m");
1218 return status_printf(NULL
, false, false,
1219 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1220 isempty(ansi_color
) ? "1" : ansi_color
,
1221 isempty(pretty_name
) ? "Linux" : pretty_name
);
1224 static int write_container_id(void) {
1227 c
= getenv("container");
1231 return write_string_file("/run/systemd/container", c
, WRITE_STRING_FILE_CREATE
);
1234 int main(int argc
, char *argv
[]) {
1236 int r
, retval
= EXIT_FAILURE
;
1237 usec_t before_startup
, after_startup
;
1238 char timespan
[FORMAT_TIMESPAN_MAX
];
1240 bool reexecute
= false;
1241 const char *shutdown_verb
= NULL
;
1242 dual_timestamp initrd_timestamp
= DUAL_TIMESTAMP_NULL
;
1243 dual_timestamp userspace_timestamp
= DUAL_TIMESTAMP_NULL
;
1244 dual_timestamp kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
1245 dual_timestamp security_start_timestamp
= DUAL_TIMESTAMP_NULL
;
1246 dual_timestamp security_finish_timestamp
= DUAL_TIMESTAMP_NULL
;
1247 static char systemd
[] = "systemd";
1248 bool skip_setup
= false;
1250 bool loaded_policy
= false;
1251 bool arm_reboot_watchdog
= false;
1252 bool queue_default_job
= false;
1253 bool empty_etc
= false;
1254 char *switch_root_dir
= NULL
, *switch_root_init
= NULL
;
1255 struct rlimit saved_rlimit_nofile
= RLIMIT_MAKE_CONST(0);
1256 const char *error_message
= NULL
;
1257 uint8_t shutdown_exit_code
= 0;
1259 #ifdef HAVE_SYSV_COMPAT
1260 if (getpid() != 1 && strstr(program_invocation_short_name
, "init")) {
1261 /* This is compatibility support for SysV, where
1262 * calling init as a user is identical to telinit. */
1265 execv(SYSTEMCTL_BINARY_PATH
, argv
);
1266 log_error_errno(errno
, "Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
1271 dual_timestamp_from_monotonic(&kernel_timestamp
, 0);
1272 dual_timestamp_get(&userspace_timestamp
);
1274 /* Determine if this is a reexecution or normal bootup. We do
1275 * the full command line parsing much later, so let's just
1276 * have a quick peek here. */
1277 if (strv_find(argv
+1, "--deserialize"))
1280 /* If we have switched root, do all the special setup
1282 if (strv_find(argv
+1, "--switched-root"))
1285 /* If we get started via the /sbin/init symlink then we are
1286 called 'init'. After a subsequent reexecution we are then
1287 called 'systemd'. That is confusing, hence let's call us
1288 systemd right-away. */
1289 program_invocation_short_name
= systemd
;
1290 prctl(PR_SET_NAME
, systemd
);
1295 log_show_color(isatty(STDERR_FILENO
) > 0);
1296 log_set_upgrade_syslog_to_journal(true);
1298 /* Disable the umask logic */
1302 if (getpid() == 1 && detect_container() <= 0) {
1304 /* Running outside of a container as PID 1 */
1305 arg_running_as
= MANAGER_SYSTEM
;
1307 log_set_target(LOG_TARGET_KMSG
);
1311 initrd_timestamp
= userspace_timestamp
;
1314 mount_setup_early();
1315 dual_timestamp_get(&security_start_timestamp
);
1316 if (mac_selinux_setup(&loaded_policy
) < 0) {
1317 error_message
= "Failed to load SELinux policy";
1319 } else if (ima_setup() < 0) {
1320 error_message
= "Failed to load IMA policy";
1322 } else if (mac_smack_setup(&loaded_policy
) < 0) {
1323 error_message
= "Failed to load SMACK policy";
1326 dual_timestamp_get(&security_finish_timestamp
);
1329 if (mac_selinux_init(NULL
) < 0) {
1330 error_message
= "Failed to initialize SELinux policy";
1335 if (clock_is_localtime() > 0) {
1339 * The very first call of settimeofday() also does a time warp in the kernel.
1341 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on
1342 * external tools to take care of maintaining the RTC and do all adjustments.
1343 * This matches the behavior of Windows, which leaves the RTC alone if the
1344 * registry tells that the RTC runs in UTC.
1346 r
= clock_set_timezone(&min
);
1348 log_error_errno(r
, "Failed to apply local time delta, ignoring: %m");
1350 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min
);
1351 } else if (!in_initrd()) {
1353 * Do a dummy very first call to seal the kernel's time warp magic.
1355 * Do not call this this from inside the initrd. The initrd might not
1356 * carry /etc/adjtime with LOCAL, but the real system could be set up
1357 * that way. In such case, we need to delay the time-warp or the sealing
1358 * until we reach the real system.
1360 * Do no set the kernel's timezone. The concept of local time cannot
1361 * be supported reliably, the time will jump or be incorrect at every daylight
1362 * saving time change. All kernel local time concepts will be treated
1365 clock_reset_timewarp();
1369 /* Set the default for later on, but don't actually
1370 * open the logs like this for now. Note that if we
1371 * are transitioning from the initrd there might still
1372 * be journal fd open, and we shouldn't attempt
1373 * opening that before we parsed /proc/cmdline which
1374 * might redirect output elsewhere. */
1375 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1377 } else if (getpid() == 1) {
1378 /* Running inside a container, as PID 1 */
1379 arg_running_as
= MANAGER_SYSTEM
;
1380 log_set_target(LOG_TARGET_CONSOLE
);
1381 log_close_console(); /* force reopen of /dev/console */
1384 /* For the later on, see above... */
1385 log_set_target(LOG_TARGET_JOURNAL
);
1387 /* clear the kernel timestamp,
1388 * because we are in a container */
1389 kernel_timestamp
.monotonic
= 0ULL;
1390 kernel_timestamp
.realtime
= 0ULL;
1393 /* Running as user instance */
1394 arg_running_as
= MANAGER_USER
;
1395 log_set_target(LOG_TARGET_AUTO
);
1398 /* clear the kernel timestamp,
1399 * because we are not PID 1 */
1400 kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
1403 /* Initialize default unit */
1404 r
= set_default_unit(SPECIAL_DEFAULT_TARGET
);
1406 log_emergency_errno(r
, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET
);
1407 error_message
= "Failed to set default unit";
1411 r
= initialize_join_controllers();
1413 error_message
= "Failed to initialize cgroup controllers";
1417 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1418 * /proc/$PID/fd is available. */
1419 if (getpid() == 1) {
1421 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
1425 r
= mount_setup(loaded_policy
);
1427 error_message
= "Failed to mount API filesystems";
1432 /* Reset all signal handlers. */
1433 (void) reset_all_signal_handlers();
1434 (void) ignore_signals(SIGNALS_IGNORE
, -1);
1436 if (parse_config_file() < 0) {
1437 error_message
= "Failed to parse config file";
1441 if (arg_running_as
== MANAGER_SYSTEM
) {
1442 r
= parse_proc_cmdline(parse_proc_cmdline_item
);
1444 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
1447 /* Note that this also parses bits from the kernel command
1448 * line, including "debug". */
1449 log_parse_environment();
1451 if (parse_argv(argc
, argv
) < 0) {
1452 error_message
= "Failed to parse commandline arguments";
1456 if (arg_action
== ACTION_TEST
&&
1458 log_error("Don't run test mode as root.");
1462 if (arg_running_as
== MANAGER_USER
&&
1463 arg_action
== ACTION_RUN
&&
1465 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1469 if (arg_running_as
== MANAGER_SYSTEM
&&
1470 arg_action
== ACTION_RUN
&&
1471 running_in_chroot() > 0) {
1472 log_error("Cannot be run in a chroot() environment.");
1476 if (arg_action
== ACTION_TEST
)
1479 pager_open_if_enabled();
1481 if (arg_action
== ACTION_HELP
) {
1484 } else if (arg_action
== ACTION_VERSION
) {
1487 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
1488 unit_dump_config_items(stdout
);
1489 retval
= EXIT_SUCCESS
;
1491 } else if (arg_action
== ACTION_DONE
) {
1492 retval
= EXIT_SUCCESS
;
1496 if (arg_running_as
== MANAGER_USER
&&
1497 !getenv("XDG_RUNTIME_DIR")) {
1498 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1502 assert_se(arg_action
== ACTION_RUN
|| arg_action
== ACTION_TEST
);
1504 /* Close logging fds, in order not to confuse fdset below */
1507 /* Remember open file descriptors for later deserialization */
1508 r
= fdset_new_fill(&fds
);
1510 log_emergency_errno(r
, "Failed to allocate fd set: %m");
1511 error_message
= "Failed to allocate fd set";
1514 fdset_cloexec(fds
, true);
1516 if (arg_serialization
)
1517 assert_se(fdset_remove(fds
, fileno(arg_serialization
)) >= 0);
1519 if (arg_running_as
== MANAGER_SYSTEM
)
1520 /* Become a session leader if we aren't one yet. */
1523 /* Move out of the way, so that we won't block unmounts */
1524 assert_se(chdir("/") == 0);
1526 /* Reset the console, but only if this is really init and we
1527 * are freshly booted */
1528 if (arg_running_as
== MANAGER_SYSTEM
&& arg_action
== ACTION_RUN
) {
1530 /* If we are init, we connect stdin/stdout/stderr to
1531 * /dev/null and make sure we don't have a controlling
1535 if (getpid() == 1 && !skip_setup
)
1539 /* Open the logging devices, if possible and necessary */
1542 if (arg_show_status
== _SHOW_STATUS_UNSET
)
1543 arg_show_status
= SHOW_STATUS_YES
;
1545 /* Make sure we leave a core dump without panicing the
1547 if (getpid() == 1) {
1548 install_crash_handler();
1550 r
= mount_cgroup_controllers(arg_join_controllers
);
1555 if (arg_running_as
== MANAGER_SYSTEM
) {
1558 log_info(PACKAGE_STRING
" running in %ssystem mode. (" SYSTEMD_FEATURES
")",
1559 arg_action
== ACTION_TEST
? "test " : "" );
1561 v
= detect_virtualization();
1563 log_info("Detected virtualization %s.", virtualization_to_string(v
));
1565 write_container_id();
1567 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1570 log_info("Running in initial RAM disk.");
1572 /* Let's check whether /etc is already populated. We
1573 * don't actually really check for that, but use
1574 * /etc/machine-id as flag file. This allows container
1575 * managers and installers to provision a couple of
1576 * files already. If the container manager wants to
1577 * provision the machine ID itself it should pass
1578 * $container_uuid to PID 1. */
1580 empty_etc
= access("/etc/machine-id", F_OK
) < 0;
1582 log_info("Running with unpopulated /etc.");
1584 _cleanup_free_
char *t
;
1586 t
= uid_to_name(getuid());
1587 log_debug(PACKAGE_STRING
" running in %suser mode for user "UID_FMT
"/%s. (" SYSTEMD_FEATURES
")",
1588 arg_action
== ACTION_TEST
? " test" : "", getuid(), t
);
1591 if (arg_running_as
== MANAGER_SYSTEM
&& !skip_setup
) {
1592 if (arg_show_status
> 0)
1596 machine_id_setup(NULL
);
1603 if (arg_running_as
== MANAGER_SYSTEM
&& arg_runtime_watchdog
> 0)
1604 watchdog_set_timeout(&arg_runtime_watchdog
);
1606 if (arg_timer_slack_nsec
!= NSEC_INFINITY
)
1607 if (prctl(PR_SET_TIMERSLACK
, arg_timer_slack_nsec
) < 0)
1608 log_error_errno(errno
, "Failed to adjust timer slack: %m");
1610 if (arg_capability_bounding_set_drop
) {
1611 r
= capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop
);
1613 log_emergency_errno(r
, "Failed to drop capability bounding set of usermode helpers: %m");
1614 error_message
= "Failed to drop capability bounding set of usermode helpers";
1617 r
= capability_bounding_set_drop(arg_capability_bounding_set_drop
, true);
1619 log_emergency_errno(r
, "Failed to drop capability bounding set: %m");
1620 error_message
= "Failed to drop capability bounding set";
1625 if (arg_syscall_archs
) {
1626 r
= enforce_syscall_archs(arg_syscall_archs
);
1628 error_message
= "Failed to set syscall architectures";
1633 if (arg_running_as
== MANAGER_USER
)
1634 /* Become reaper of our children */
1635 if (prctl(PR_SET_CHILD_SUBREAPER
, 1) < 0)
1636 log_warning_errno(errno
, "Failed to make us a subreaper: %m");
1638 if (arg_running_as
== MANAGER_SYSTEM
) {
1639 bump_rlimit_nofile(&saved_rlimit_nofile
);
1642 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, false, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, false, NULL
, 0);
1644 log_warning_errno(r
, "Failed to populate /etc with preset unit settings, ignoring: %m");
1646 log_info("Populated /etc with preset unit settings.");
1650 r
= manager_new(arg_running_as
, arg_action
== ACTION_TEST
, &m
);
1652 log_emergency_errno(r
, "Failed to allocate manager object: %m");
1653 error_message
= "Failed to allocate manager object";
1657 m
->confirm_spawn
= arg_confirm_spawn
;
1658 m
->runtime_watchdog
= arg_runtime_watchdog
;
1659 m
->shutdown_watchdog
= arg_shutdown_watchdog
;
1660 m
->userspace_timestamp
= userspace_timestamp
;
1661 m
->kernel_timestamp
= kernel_timestamp
;
1662 m
->initrd_timestamp
= initrd_timestamp
;
1663 m
->security_start_timestamp
= security_start_timestamp
;
1664 m
->security_finish_timestamp
= security_finish_timestamp
;
1666 manager_set_defaults(m
);
1667 manager_set_show_status(m
, arg_show_status
);
1668 manager_set_first_boot(m
, empty_etc
);
1670 /* Remember whether we should queue the default job */
1671 queue_default_job
= !arg_serialization
|| arg_switched_root
;
1673 before_startup
= now(CLOCK_MONOTONIC
);
1675 r
= manager_startup(m
, arg_serialization
, fds
);
1677 log_error_errno(r
, "Failed to fully start up daemon: %m");
1679 /* This will close all file descriptors that were opened, but
1680 * not claimed by any unit. */
1684 arg_serialization
= safe_fclose(arg_serialization
);
1686 if (queue_default_job
) {
1687 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1688 Unit
*target
= NULL
;
1689 Job
*default_unit_job
;
1691 log_debug("Activating default unit: %s", arg_default_unit
);
1693 r
= manager_load_unit(m
, arg_default_unit
, NULL
, &error
, &target
);
1695 log_error("Failed to load default target: %s", bus_error_message(&error
, r
));
1696 else if (target
->load_state
== UNIT_ERROR
|| target
->load_state
== UNIT_NOT_FOUND
)
1697 log_error_errno(target
->load_error
, "Failed to load default target: %m");
1698 else if (target
->load_state
== UNIT_MASKED
)
1699 log_error("Default target masked.");
1701 if (!target
|| target
->load_state
!= UNIT_LOADED
) {
1702 log_info("Trying to load rescue target...");
1704 r
= manager_load_unit(m
, SPECIAL_RESCUE_TARGET
, NULL
, &error
, &target
);
1706 log_emergency("Failed to load rescue target: %s", bus_error_message(&error
, r
));
1707 error_message
= "Failed to load rescue target";
1709 } else if (target
->load_state
== UNIT_ERROR
|| target
->load_state
== UNIT_NOT_FOUND
) {
1710 log_emergency_errno(target
->load_error
, "Failed to load rescue target: %m");
1711 error_message
= "Failed to load rescue target";
1713 } else if (target
->load_state
== UNIT_MASKED
) {
1714 log_emergency("Rescue target masked.");
1715 error_message
= "Rescue target masked";
1720 assert(target
->load_state
== UNIT_LOADED
);
1722 if (arg_action
== ACTION_TEST
) {
1723 printf("-> By units:\n");
1724 manager_dump_units(m
, stdout
, "\t");
1727 r
= manager_add_job(m
, JOB_START
, target
, JOB_ISOLATE
, false, &error
, &default_unit_job
);
1729 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error
, r
));
1731 r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, false, &error
, &default_unit_job
);
1733 log_emergency("Failed to start default target: %s", bus_error_message(&error
, r
));
1734 error_message
= "Failed to start default target";
1738 log_emergency("Failed to isolate default target: %s", bus_error_message(&error
, r
));
1739 error_message
= "Failed to isolate default target";
1743 m
->default_unit_job_id
= default_unit_job
->id
;
1745 after_startup
= now(CLOCK_MONOTONIC
);
1746 log_full(arg_action
== ACTION_TEST
? LOG_INFO
: LOG_DEBUG
,
1747 "Loaded units and determined initial transaction in %s.",
1748 format_timespan(timespan
, sizeof(timespan
), after_startup
- before_startup
, 100 * USEC_PER_MSEC
));
1750 if (arg_action
== ACTION_TEST
) {
1751 printf("-> By jobs:\n");
1752 manager_dump_jobs(m
, stdout
, "\t");
1753 retval
= EXIT_SUCCESS
;
1759 r
= manager_loop(m
);
1761 log_emergency_errno(r
, "Failed to run main loop: %m");
1762 error_message
= "Failed to run main loop";
1766 switch (m
->exit_code
) {
1768 case MANAGER_RELOAD
:
1769 log_info("Reloading.");
1771 r
= parse_config_file();
1773 log_error("Failed to parse config file.");
1775 manager_set_defaults(m
);
1777 r
= manager_reload(m
);
1779 log_error_errno(r
, "Failed to reload: %m");
1782 case MANAGER_REEXECUTE
:
1784 if (prepare_reexecute(m
, &arg_serialization
, &fds
, false) < 0) {
1785 error_message
= "Failed to prepare for reexecution";
1790 log_notice("Reexecuting.");
1793 case MANAGER_SWITCH_ROOT
:
1794 /* Steal the switch root parameters */
1795 switch_root_dir
= m
->switch_root
;
1796 switch_root_init
= m
->switch_root_init
;
1797 m
->switch_root
= m
->switch_root_init
= NULL
;
1799 if (!switch_root_init
)
1800 if (prepare_reexecute(m
, &arg_serialization
, &fds
, true) < 0) {
1801 error_message
= "Failed to prepare for reexecution";
1806 log_notice("Switching root.");
1810 case MANAGER_REBOOT
:
1811 case MANAGER_POWEROFF
:
1813 case MANAGER_KEXEC
: {
1814 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1815 [MANAGER_EXIT
] = "exit",
1816 [MANAGER_REBOOT
] = "reboot",
1817 [MANAGER_POWEROFF
] = "poweroff",
1818 [MANAGER_HALT
] = "halt",
1819 [MANAGER_KEXEC
] = "kexec"
1822 assert_se(shutdown_verb
= table
[m
->exit_code
]);
1823 arm_reboot_watchdog
= m
->exit_code
== MANAGER_REBOOT
;
1825 log_notice("Shutting down.");
1830 assert_not_reached("Unknown exit code.");
1838 arg_shutdown_watchdog
= m
->shutdown_watchdog
;
1839 shutdown_exit_code
= m
->return_value
;
1841 m
= manager_free(m
);
1843 for (j
= 0; j
< ELEMENTSOF(arg_default_rlimit
); j
++)
1844 arg_default_rlimit
[j
] = mfree(arg_default_rlimit
[j
]);
1846 arg_default_unit
= mfree(arg_default_unit
);
1848 free_join_controllers();
1850 arg_default_environment
= strv_free(arg_default_environment
);
1852 arg_syscall_archs
= set_free(arg_syscall_archs
);
1854 mac_selinux_finish();
1858 unsigned i
, args_size
;
1860 /* Close and disarm the watchdog, so that the new
1861 * instance can reinitialize it, but doesn't get
1862 * rebooted while we do that */
1863 watchdog_close(true);
1865 /* Reset the RLIMIT_NOFILE to the kernel default, so
1866 * that the new systemd can pass the kernel default to
1867 * its child processes */
1868 if (saved_rlimit_nofile
.rlim_cur
> 0)
1869 setrlimit(RLIMIT_NOFILE
, &saved_rlimit_nofile
);
1871 if (switch_root_dir
) {
1872 /* Kill all remaining processes from the
1873 * initrd, but don't wait for them, so that we
1874 * can handle the SIGCHLD for them after
1876 broadcast_signal(SIGTERM
, false, true);
1878 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1879 r
= switch_root(switch_root_dir
, "/mnt", true, MS_MOVE
);
1881 log_error_errno(r
, "Failed to switch root, trying to continue: %m");
1884 args_size
= MAX(6, argc
+1);
1885 args
= newa(const char*, args_size
);
1887 if (!switch_root_init
) {
1888 char sfd
[DECIMAL_STR_MAX(int) + 1];
1890 /* First try to spawn ourselves with the right
1891 * path, and with full serialization. We do
1892 * this only if the user didn't specify an
1893 * explicit init to spawn. */
1895 assert(arg_serialization
);
1898 xsprintf(sfd
, "%i", fileno(arg_serialization
));
1901 args
[i
++] = SYSTEMD_BINARY_PATH
;
1902 if (switch_root_dir
)
1903 args
[i
++] = "--switched-root";
1904 args
[i
++] = arg_running_as
== MANAGER_SYSTEM
? "--system" : "--user";
1905 args
[i
++] = "--deserialize";
1909 /* do not pass along the environment we inherit from the kernel or initrd */
1910 if (switch_root_dir
)
1913 assert(i
<= args_size
);
1914 execv(args
[0], (char* const*) args
);
1917 /* Try the fallback, if there is any, without any
1918 * serialization. We pass the original argv[] and
1919 * envp[]. (Well, modulo the ordering changes due to
1920 * getopt() in argv[], and some cleanups in envp[],
1921 * but let's hope that doesn't matter.) */
1923 arg_serialization
= safe_fclose(arg_serialization
);
1930 /* Reopen the console */
1931 make_console_stdio();
1933 for (j
= 1, i
= 1; j
< (unsigned) argc
; j
++)
1934 args
[i
++] = argv
[j
];
1936 assert(i
<= args_size
);
1938 /* Reenable any blocked signals, especially important
1939 * if we switch from initial ramdisk to init=... */
1940 (void) reset_all_signal_handlers();
1941 (void) reset_signal_mask();
1943 if (switch_root_init
) {
1944 args
[0] = switch_root_init
;
1945 execv(args
[0], (char* const*) args
);
1946 log_warning_errno(errno
, "Failed to execute configured init, trying fallback: %m");
1949 args
[0] = "/sbin/init";
1950 execv(args
[0], (char* const*) args
);
1952 if (errno
== ENOENT
) {
1953 log_warning("No /sbin/init, trying fallback");
1955 args
[0] = "/bin/sh";
1957 execv(args
[0], (char* const*) args
);
1958 log_error_errno(errno
, "Failed to execute /bin/sh, giving up: %m");
1960 log_warning_errno(errno
, "Failed to execute /sbin/init, giving up: %m");
1963 arg_serialization
= safe_fclose(arg_serialization
);
1970 #ifdef HAVE_VALGRIND_VALGRIND_H
1971 /* If we are PID 1 and running under valgrind, then let's exit
1972 * here explicitly. valgrind will only generate nice output on
1973 * exit(), not on exec(), hence let's do the former not the
1975 if (getpid() == 1 && RUNNING_ON_VALGRIND
)
1979 if (shutdown_verb
) {
1980 char log_level
[DECIMAL_STR_MAX(int) + 1];
1981 char exit_code
[DECIMAL_STR_MAX(uint8_t) + 1];
1982 const char* command_line
[11] = {
1983 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1985 "--log-level", log_level
,
1989 _cleanup_strv_free_
char **env_block
= NULL
;
1991 assert(command_line
[pos
] == NULL
);
1992 env_block
= strv_copy(environ
);
1994 xsprintf(log_level
, "%d", log_get_max_level());
1996 switch (log_get_target()) {
1997 case LOG_TARGET_KMSG
:
1998 case LOG_TARGET_JOURNAL_OR_KMSG
:
1999 case LOG_TARGET_SYSLOG_OR_KMSG
:
2000 command_line
[pos
++] = "kmsg";
2003 case LOG_TARGET_NULL
:
2004 command_line
[pos
++] = "null";
2007 case LOG_TARGET_CONSOLE
:
2009 command_line
[pos
++] = "console";
2013 if (log_get_show_color())
2014 command_line
[pos
++] = "--log-color";
2016 if (log_get_show_location())
2017 command_line
[pos
++] = "--log-location";
2019 if (streq(shutdown_verb
, "exit")) {
2020 command_line
[pos
++] = "--exit-code";
2021 command_line
[pos
++] = exit_code
;
2022 xsprintf(exit_code
, "%d", shutdown_exit_code
);
2025 assert(pos
< ELEMENTSOF(command_line
));
2027 if (arm_reboot_watchdog
&& arg_shutdown_watchdog
> 0) {
2030 /* If we reboot let's set the shutdown
2031 * watchdog and tell the shutdown binary to
2032 * repeatedly ping it */
2033 r
= watchdog_set_timeout(&arg_shutdown_watchdog
);
2034 watchdog_close(r
< 0);
2036 /* Tell the binary how often to ping, ignore failure */
2037 if (asprintf(&e
, "WATCHDOG_USEC="USEC_FMT
, arg_shutdown_watchdog
) > 0)
2038 strv_push(&env_block
, e
);
2040 watchdog_close(true);
2042 /* Avoid the creation of new processes forked by the
2043 * kernel; at this point, we will not listen to the
2045 if (detect_container() <= 0)
2046 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER
);
2048 execve(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
, env_block
);
2049 log_error_errno(errno
, "Failed to execute shutdown binary, %s: %m",
2050 getpid() == 1 ? "freezing" : "quitting");
2053 if (getpid() == 1) {
2055 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
2056 ANSI_HIGHLIGHT_RED_ON
"!!!!!!" ANSI_HIGHLIGHT_OFF
,
2057 "%s, freezing.", error_message
);