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;
118 static void nop_handler(int sig
) {}
120 static void pager_open_if_enabled(void) {
122 if (arg_no_pager
<= 0)
128 noreturn
static void crash(int sig
) {
131 /* Pass this on immediately, if this is not PID 1 */
133 else if (!arg_dump_core
)
134 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig
));
136 struct sigaction sa
= {
137 .sa_handler
= nop_handler
,
138 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
142 /* We want to wait for the core process, hence let's enable SIGCHLD */
143 sigaction(SIGCHLD
, &sa
, NULL
);
145 pid
= raw_clone(SIGCHLD
, NULL
);
147 log_emergency_errno(errno
, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig
));
150 struct rlimit rl
= {};
152 /* Enable default signal handler for core dump */
154 sa
.sa_handler
= SIG_DFL
;
155 sigaction(sig
, &sa
, NULL
);
157 /* Don't limit the core dump size */
158 rl
.rlim_cur
= RLIM_INFINITY
;
159 rl
.rlim_max
= RLIM_INFINITY
;
160 setrlimit(RLIMIT_CORE
, &rl
);
162 /* Just to be sure... */
165 /* Raise the signal again */
167 kill(pid
, sig
); /* raise() would kill the parent */
169 assert_not_reached("We shouldn't be here...");
175 /* Order things nicely. */
176 r
= wait_for_terminate(pid
, &status
);
178 log_emergency_errno(r
, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig
));
179 else if (status
.si_code
!= CLD_DUMPED
)
180 log_emergency("Caught <%s>, core dump failed (child "PID_FMT
", code=%s, status=%i/%s).",
181 signal_to_string(sig
),
182 pid
, sigchld_code_to_string(status
.si_code
),
184 strna(status
.si_code
== CLD_EXITED
185 ? exit_status_to_string(status
.si_status
, EXIT_STATUS_FULL
)
186 : signal_to_string(status
.si_status
)));
188 log_emergency("Caught <%s>, dumped core as pid "PID_FMT
".", signal_to_string(sig
), pid
);
193 chvt(arg_crash_chvt
);
195 if (arg_crash_shell
) {
196 struct sigaction sa
= {
197 .sa_handler
= SIG_IGN
,
198 .sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
,
202 log_info("Executing crash shell in 10s...");
205 /* Let the kernel reap children for us */
206 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
208 pid
= raw_clone(SIGCHLD
, NULL
);
210 log_emergency_errno(errno
, "Failed to fork off crash shell: %m");
212 make_console_stdio();
213 execle("/bin/sh", "/bin/sh", NULL
, environ
);
215 log_emergency_errno(errno
, "execle() failed: %m");
218 log_info("Successfully spawned crash shell as PID "PID_FMT
".", pid
);
221 log_emergency("Freezing execution.");
225 static void install_crash_handler(void) {
226 static const struct sigaction sa
= {
228 .sa_flags
= SA_NODEFER
, /* So that we can raise the signal again from the signal handler */
232 /* We ignore the return value here, since, we don't mind if we
233 * cannot set up a crash handler */
234 r
= sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
236 log_debug_errno(r
, "I had trouble setting up the crash handler, ignoring: %m");
239 static int console_setup(void) {
240 _cleanup_close_
int tty_fd
= -1;
243 tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
);
245 return log_error_errno(tty_fd
, "Failed to open /dev/console: %m");
247 /* We don't want to force text mode. plymouth may be showing
248 * pictures already from initrd. */
249 r
= reset_terminal_fd(tty_fd
, false);
251 return log_error_errno(r
, "Failed to reset /dev/console: %m");
256 static int set_default_unit(const char *u
) {
265 free(arg_default_unit
);
266 arg_default_unit
= c
;
271 static int parse_proc_cmdline_item(const char *key
, const char *value
) {
273 static const char * const rlmap
[] = {
274 "emergency", SPECIAL_EMERGENCY_TARGET
,
275 "-b", SPECIAL_EMERGENCY_TARGET
,
276 "rescue", SPECIAL_RESCUE_TARGET
,
277 "single", SPECIAL_RESCUE_TARGET
,
278 "-s", SPECIAL_RESCUE_TARGET
,
279 "s", SPECIAL_RESCUE_TARGET
,
280 "S", SPECIAL_RESCUE_TARGET
,
281 "1", SPECIAL_RESCUE_TARGET
,
282 "2", SPECIAL_MULTI_USER_TARGET
,
283 "3", SPECIAL_MULTI_USER_TARGET
,
284 "4", SPECIAL_MULTI_USER_TARGET
,
285 "5", SPECIAL_GRAPHICAL_TARGET
,
291 if (streq(key
, "systemd.unit") && value
) {
294 return set_default_unit(value
);
296 } else if (streq(key
, "rd.systemd.unit") && value
) {
299 return set_default_unit(value
);
301 } else if (streq(key
, "systemd.dump_core") && value
) {
303 r
= parse_boolean(value
);
305 log_warning("Failed to parse dump core switch %s. Ignoring.", value
);
309 } else if (streq(key
, "systemd.crash_shell") && value
) {
311 r
= parse_boolean(value
);
313 log_warning("Failed to parse crash shell switch %s. Ignoring.", value
);
317 } else if (streq(key
, "systemd.crash_chvt") && value
) {
319 if (safe_atoi(value
, &r
) < 0)
320 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value
);
324 } else if (streq(key
, "systemd.confirm_spawn") && value
) {
326 r
= parse_boolean(value
);
328 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", value
);
330 arg_confirm_spawn
= r
;
332 } else if (streq(key
, "systemd.show_status") && value
) {
334 r
= parse_show_status(value
, &arg_show_status
);
336 log_warning("Failed to parse show status switch %s. Ignoring.", value
);
338 } else if (streq(key
, "systemd.default_standard_output") && value
) {
340 r
= exec_output_from_string(value
);
342 log_warning("Failed to parse default standard output switch %s. Ignoring.", value
);
344 arg_default_std_output
= r
;
346 } else if (streq(key
, "systemd.default_standard_error") && value
) {
348 r
= exec_output_from_string(value
);
350 log_warning("Failed to parse default standard error switch %s. Ignoring.", value
);
352 arg_default_std_error
= r
;
354 } else if (streq(key
, "systemd.setenv") && value
) {
356 if (env_assignment_is_valid(value
)) {
359 env
= strv_env_set(arg_default_environment
, value
);
361 arg_default_environment
= env
;
363 log_warning_errno(ENOMEM
, "Setting environment variable '%s' failed, ignoring: %m", value
);
365 log_warning("Environment variable name '%s' is not valid. Ignoring.", value
);
367 } else if (streq(key
, "quiet") && !value
) {
369 if (arg_show_status
== _SHOW_STATUS_UNSET
)
370 arg_show_status
= SHOW_STATUS_AUTO
;
372 } else if (streq(key
, "debug") && !value
) {
374 /* Note that log_parse_environment() handles 'debug'
375 * too, and sets the log level to LOG_DEBUG. */
377 if (detect_container(NULL
) > 0)
378 log_set_target(LOG_TARGET_CONSOLE
);
380 } else if (!in_initrd() && !value
) {
383 /* SysV compatibility */
384 for (i
= 0; i
< ELEMENTSOF(rlmap
); i
+= 2)
385 if (streq(key
, rlmap
[i
]))
386 return set_default_unit(rlmap
[i
+1]);
392 #define DEFINE_SETTER(name, func, descr) \
393 static int name(const char *unit, \
394 const char *filename, \
396 const char *section, \
397 unsigned section_line, \
398 const char *lvalue, \
400 const char *rvalue, \
412 log_syntax(unit, LOG_ERR, filename, line, -r, \
413 "Invalid " descr "'%s': %s", \
414 rvalue, strerror(-r)); \
419 DEFINE_SETTER(config_parse_level2
, log_set_max_level_from_string
, "log level")
420 DEFINE_SETTER(config_parse_target
, log_set_target_from_string
, "target")
421 DEFINE_SETTER(config_parse_color
, log_show_color_from_string
, "color" )
422 DEFINE_SETTER(config_parse_location
, log_show_location_from_string
, "location")
424 static int config_parse_cpu_affinity2(
426 const char *filename
,
429 unsigned section_line
,
436 const char *word
, *state
;
445 FOREACH_WORD_QUOTED(word
, l
, rvalue
, state
) {
450 if (!(t
= strndup(word
, l
)))
453 r
= safe_atou(t
, &cpu
);
457 if (!(c
= cpu_set_malloc(&ncpus
)))
460 if (r
< 0 || cpu
>= ncpus
) {
461 log_syntax(unit
, LOG_ERR
, filename
, line
, -r
,
462 "Failed to parse CPU affinity '%s'", rvalue
);
467 CPU_SET_S(cpu
, CPU_ALLOC_SIZE(ncpus
), c
);
470 log_syntax(unit
, LOG_ERR
, filename
, line
, EINVAL
,
471 "Trailing garbage, ignoring.");
474 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
475 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
,
542 const char *word
, *state
;
549 free_join_controllers();
551 FOREACH_WORD_QUOTED(word
, length
, rvalue
, state
) {
554 s
= strndup(word
, length
);
558 l
= strv_split(s
, ",");
563 if (strv_length(l
) <= 1) {
568 if (!arg_join_controllers
) {
569 arg_join_controllers
= new(char**, 2);
570 if (!arg_join_controllers
) {
575 arg_join_controllers
[0] = l
;
576 arg_join_controllers
[1] = NULL
;
583 t
= new0(char**, n
+2);
591 for (a
= arg_join_controllers
; *a
; a
++) {
593 if (strv_overlap(*a
, l
)) {
594 if (strv_extend_strv(&l
, *a
) < 0) {
614 t
[n
++] = strv_uniq(l
);
616 strv_free_free(arg_join_controllers
);
617 arg_join_controllers
= t
;
621 log_syntax(unit
, LOG_ERR
, filename
, line
, EINVAL
,
622 "Trailing garbage, ignoring.");
627 static int parse_config_file(void) {
629 const ConfigTableItem items
[] = {
630 { "Manager", "LogLevel", config_parse_level2
, 0, NULL
},
631 { "Manager", "LogTarget", config_parse_target
, 0, NULL
},
632 { "Manager", "LogColor", config_parse_color
, 0, NULL
},
633 { "Manager", "LogLocation", config_parse_location
, 0, NULL
},
634 { "Manager", "DumpCore", config_parse_bool
, 0, &arg_dump_core
},
635 { "Manager", "CrashShell", config_parse_bool
, 0, &arg_crash_shell
},
636 { "Manager", "ShowStatus", config_parse_show_status
, 0, &arg_show_status
},
637 { "Manager", "CrashChVT", config_parse_int
, 0, &arg_crash_chvt
},
638 { "Manager", "CPUAffinity", config_parse_cpu_affinity2
, 0, NULL
},
639 { "Manager", "JoinControllers", config_parse_join_controllers
, 0, &arg_join_controllers
},
640 { "Manager", "RuntimeWatchdogSec", config_parse_sec
, 0, &arg_runtime_watchdog
},
641 { "Manager", "ShutdownWatchdogSec", config_parse_sec
, 0, &arg_shutdown_watchdog
},
642 { "Manager", "CapabilityBoundingSet", config_parse_bounding_set
, 0, &arg_capability_bounding_set_drop
},
644 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs
, 0, &arg_syscall_archs
},
646 { "Manager", "TimerSlackNSec", config_parse_nsec
, 0, &arg_timer_slack_nsec
},
647 { "Manager", "DefaultTimerAccuracySec", config_parse_sec
, 0, &arg_default_timer_accuracy_usec
},
648 { "Manager", "DefaultStandardOutput", config_parse_output
, 0, &arg_default_std_output
},
649 { "Manager", "DefaultStandardError", config_parse_output
, 0, &arg_default_std_error
},
650 { "Manager", "DefaultTimeoutStartSec", config_parse_sec
, 0, &arg_default_timeout_start_usec
},
651 { "Manager", "DefaultTimeoutStopSec", config_parse_sec
, 0, &arg_default_timeout_stop_usec
},
652 { "Manager", "DefaultRestartSec", config_parse_sec
, 0, &arg_default_restart_usec
},
653 { "Manager", "DefaultStartLimitInterval", config_parse_sec
, 0, &arg_default_start_limit_interval
},
654 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned
, 0, &arg_default_start_limit_burst
},
655 { "Manager", "DefaultEnvironment", config_parse_environ
, 0, &arg_default_environment
},
656 { "Manager", "DefaultLimitCPU", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_CPU
] },
657 { "Manager", "DefaultLimitFSIZE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_FSIZE
] },
658 { "Manager", "DefaultLimitDATA", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_DATA
] },
659 { "Manager", "DefaultLimitSTACK", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_STACK
] },
660 { "Manager", "DefaultLimitCORE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_CORE
] },
661 { "Manager", "DefaultLimitRSS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RSS
] },
662 { "Manager", "DefaultLimitNOFILE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NOFILE
] },
663 { "Manager", "DefaultLimitAS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_AS
] },
664 { "Manager", "DefaultLimitNPROC", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NPROC
] },
665 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_MEMLOCK
] },
666 { "Manager", "DefaultLimitLOCKS", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_LOCKS
] },
667 { "Manager", "DefaultLimitSIGPENDING", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_SIGPENDING
] },
668 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_MSGQUEUE
] },
669 { "Manager", "DefaultLimitNICE", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_NICE
] },
670 { "Manager", "DefaultLimitRTPRIO", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RTPRIO
] },
671 { "Manager", "DefaultLimitRTTIME", config_parse_limit
, 0, &arg_default_rlimit
[RLIMIT_RTTIME
] },
672 { "Manager", "DefaultCPUAccounting", config_parse_bool
, 0, &arg_default_cpu_accounting
},
673 { "Manager", "DefaultBlockIOAccounting", config_parse_bool
, 0, &arg_default_blockio_accounting
},
674 { "Manager", "DefaultMemoryAccounting", config_parse_bool
, 0, &arg_default_memory_accounting
},
678 const char *fn
, *conf_dirs_nulstr
;
680 fn
= arg_running_as
== MANAGER_SYSTEM
? PKGSYSCONFDIR
"/system.conf" : PKGSYSCONFDIR
"/user.conf";
681 conf_dirs_nulstr
= arg_running_as
== MANAGER_SYSTEM
? CONF_DIRS_NULSTR("systemd/system.conf") : CONF_DIRS_NULSTR("systemd/user.conf");
682 config_parse_many(fn
, conf_dirs_nulstr
, "Manager\0",
683 config_item_table_lookup
, items
, false, NULL
);
688 static void manager_set_defaults(Manager
*m
) {
692 m
->default_timer_accuracy_usec
= arg_default_timer_accuracy_usec
;
693 m
->default_std_output
= arg_default_std_output
;
694 m
->default_std_error
= arg_default_std_error
;
695 m
->default_timeout_start_usec
= arg_default_timeout_start_usec
;
696 m
->default_timeout_stop_usec
= arg_default_timeout_stop_usec
;
697 m
->default_restart_usec
= arg_default_restart_usec
;
698 m
->default_start_limit_interval
= arg_default_start_limit_interval
;
699 m
->default_start_limit_burst
= arg_default_start_limit_burst
;
700 m
->default_cpu_accounting
= arg_default_cpu_accounting
;
701 m
->default_blockio_accounting
= arg_default_blockio_accounting
;
702 m
->default_memory_accounting
= arg_default_memory_accounting
;
704 manager_set_default_rlimits(m
, arg_default_rlimit
);
705 manager_environment_add(m
, NULL
, arg_default_environment
);
708 static int parse_argv(int argc
, char *argv
[]) {
711 ARG_LOG_LEVEL
= 0x100,
721 ARG_DUMP_CONFIGURATION_ITEMS
,
728 ARG_DEFAULT_STD_OUTPUT
,
729 ARG_DEFAULT_STD_ERROR
732 static const struct option options
[] = {
733 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
734 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
735 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
736 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
737 { "unit", required_argument
, NULL
, ARG_UNIT
},
738 { "system", no_argument
, NULL
, ARG_SYSTEM
},
739 { "user", no_argument
, NULL
, ARG_USER
},
740 { "test", no_argument
, NULL
, ARG_TEST
},
741 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
742 { "help", no_argument
, NULL
, 'h' },
743 { "version", no_argument
, NULL
, ARG_VERSION
},
744 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
745 { "dump-core", optional_argument
, NULL
, ARG_DUMP_CORE
},
746 { "crash-shell", optional_argument
, NULL
, ARG_CRASH_SHELL
},
747 { "confirm-spawn", optional_argument
, NULL
, ARG_CONFIRM_SPAWN
},
748 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
749 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
750 { "switched-root", no_argument
, NULL
, ARG_SWITCHED_ROOT
},
751 { "default-standard-output", required_argument
, NULL
, ARG_DEFAULT_STD_OUTPUT
, },
752 { "default-standard-error", required_argument
, NULL
, ARG_DEFAULT_STD_ERROR
, },
764 while ((c
= getopt_long(argc
, argv
, "hDbsz:", options
, NULL
)) >= 0)
769 r
= log_set_max_level_from_string(optarg
);
771 log_error("Failed to parse log level %s.", optarg
);
778 r
= log_set_target_from_string(optarg
);
780 log_error("Failed to parse log target %s.", optarg
);
789 r
= log_show_color_from_string(optarg
);
791 log_error("Failed to parse log color setting %s.", optarg
);
795 log_show_color(true);
799 case ARG_LOG_LOCATION
:
801 r
= log_show_location_from_string(optarg
);
803 log_error("Failed to parse log location setting %s.", optarg
);
807 log_show_location(true);
811 case ARG_DEFAULT_STD_OUTPUT
:
812 r
= exec_output_from_string(optarg
);
814 log_error("Failed to parse default standard output setting %s.", optarg
);
817 arg_default_std_output
= r
;
820 case ARG_DEFAULT_STD_ERROR
:
821 r
= exec_output_from_string(optarg
);
823 log_error("Failed to parse default standard error output setting %s.", optarg
);
826 arg_default_std_error
= r
;
831 r
= set_default_unit(optarg
);
833 return log_error_errno(r
, "Failed to set default unit %s: %m", optarg
);
838 arg_running_as
= MANAGER_SYSTEM
;
842 arg_running_as
= MANAGER_USER
;
846 arg_action
= ACTION_TEST
;
847 if (arg_no_pager
< 0)
856 arg_action
= ACTION_VERSION
;
859 case ARG_DUMP_CONFIGURATION_ITEMS
:
860 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
864 r
= optarg
? parse_boolean(optarg
) : 1;
866 log_error("Failed to parse dump core boolean %s.", optarg
);
872 case ARG_CRASH_SHELL
:
873 r
= optarg
? parse_boolean(optarg
) : 1;
875 log_error("Failed to parse crash shell boolean %s.", optarg
);
881 case ARG_CONFIRM_SPAWN
:
882 r
= optarg
? parse_boolean(optarg
) : 1;
884 log_error("Failed to parse confirm spawn boolean %s.", optarg
);
887 arg_confirm_spawn
= r
;
890 case ARG_SHOW_STATUS
:
892 r
= parse_show_status(optarg
, &arg_show_status
);
894 log_error("Failed to parse show status boolean %s.", optarg
);
898 arg_show_status
= SHOW_STATUS_YES
;
901 case ARG_DESERIALIZE
: {
905 r
= safe_atoi(optarg
, &fd
);
906 if (r
< 0 || fd
< 0) {
907 log_error("Failed to parse deserialize option %s.", optarg
);
908 return r
< 0 ? r
: -EINVAL
;
911 fd_cloexec(fd
, true);
915 return log_error_errno(errno
, "Failed to open serialization fd: %m");
917 if (arg_serialization
)
918 fclose(arg_serialization
);
920 arg_serialization
= f
;
925 case ARG_SWITCHED_ROOT
:
926 arg_switched_root
= true;
930 arg_action
= ACTION_HELP
;
931 if (arg_no_pager
< 0)
936 log_set_max_level(LOG_DEBUG
);
942 /* Just to eat away the sysvinit kernel
943 * cmdline args without getopt() error
944 * messages that we'll parse in
945 * parse_proc_cmdline_word() or ignore. */
954 assert_not_reached("Unhandled option code.");
957 if (optind
< argc
&& getpid() != 1) {
958 /* Hmm, when we aren't run as init system
959 * let's complain about excess arguments */
961 log_error("Excess arguments.");
968 static int help(void) {
970 printf("%s [OPTIONS...]\n\n"
971 "Starts up and maintains the system or user services.\n\n"
972 " -h --help Show this help\n"
973 " --test Determine startup sequence, dump it and exit\n"
974 " --no-pager Do not pipe output into a pager\n"
975 " --dump-configuration-items Dump understood unit configuration items\n"
976 " --unit=UNIT Set default unit\n"
977 " --system Run a system instance, even if PID != 1\n"
978 " --user Run a user instance\n"
979 " --dump-core[=0|1] Dump core on crash\n"
980 " --crash-shell[=0|1] Run shell on crash\n"
981 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
982 " --show-status[=0|1] Show status updates on the console during bootup\n"
983 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
984 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
985 " --log-color[=0|1] Highlight important log messages\n"
986 " --log-location[=0|1] Include code location in log messages\n"
987 " --default-standard-output= Set default standard output for services\n"
988 " --default-standard-error= Set default standard error output for services\n",
989 program_invocation_short_name
);
994 static int version(void) {
995 puts(PACKAGE_STRING
);
996 puts(SYSTEMD_FEATURES
);
1001 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
, bool switching_root
) {
1010 r
= manager_open_serialization(m
, &f
);
1012 log_error_errno(r
, "Failed to create serialization file: %m");
1016 /* Make sure nothing is really destructed when we shut down */
1018 bus_manager_send_reloading(m
, true);
1023 log_error_errno(r
, "Failed to allocate fd set: %m");
1027 r
= manager_serialize(m
, f
, fds
, switching_root
);
1029 log_error_errno(r
, "Failed to serialize state: %m");
1033 if (fseeko(f
, 0, SEEK_SET
) < 0) {
1034 log_error_errno(errno
, "Failed to rewind serialization fd: %m");
1038 r
= fd_cloexec(fileno(f
), false);
1040 log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization: %m");
1044 r
= fdset_cloexec(fds
, false);
1046 log_error_errno(r
, "Failed to disable O_CLOEXEC for serialization fds: %m");
1064 static int bump_rlimit_nofile(struct rlimit
*saved_rlimit
) {
1068 assert(saved_rlimit
);
1070 /* Save the original RLIMIT_NOFILE so that we can reset it
1071 * later when transitioning from the initrd to the main
1072 * systemd or suchlike. */
1073 if (getrlimit(RLIMIT_NOFILE
, saved_rlimit
) < 0)
1074 return log_error_errno(errno
, "Reading RLIMIT_NOFILE failed: %m");
1076 /* Make sure forked processes get the default kernel setting */
1077 if (!arg_default_rlimit
[RLIMIT_NOFILE
]) {
1080 rl
= newdup(struct rlimit
, saved_rlimit
, 1);
1084 arg_default_rlimit
[RLIMIT_NOFILE
] = rl
;
1087 /* Bump up the resource limit for ourselves substantially */
1088 nl
.rlim_cur
= nl
.rlim_max
= 64*1024;
1089 r
= setrlimit_closest(RLIMIT_NOFILE
, &nl
);
1091 return log_error_errno(r
, "Setting RLIMIT_NOFILE failed: %m");
1096 static void test_mtab(void) {
1098 static const char ok
[] =
1099 "/proc/self/mounts\0"
1101 "../proc/self/mounts\0"
1104 _cleanup_free_
char *p
= NULL
;
1107 /* Check that /etc/mtab is a symlink to the right place or
1108 * non-existing. But certainly not a file, or a symlink to
1109 * some weird place... */
1111 r
= readlink_malloc("/etc/mtab", &p
);
1114 if (r
>= 0 && nulstr_contains(ok
, p
))
1117 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1118 "This is not supported anymore. "
1119 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1122 static void test_usr(void) {
1124 /* Check that /usr is not a separate fs */
1126 if (dir_is_empty("/usr") <= 0)
1129 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1130 "Some things will probably break (sometimes even silently) in mysterious ways. "
1131 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1134 static int initialize_join_controllers(void) {
1135 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1136 * + "net_prio". We'd like to add "cpuset" to the mix, but
1137 * "cpuset" doesn't really work for groups with no initialized
1140 arg_join_controllers
= new(char**, 3);
1141 if (!arg_join_controllers
)
1144 arg_join_controllers
[0] = strv_new("cpu", "cpuacct", NULL
);
1145 arg_join_controllers
[1] = strv_new("net_cls", "net_prio", NULL
);
1146 arg_join_controllers
[2] = NULL
;
1148 if (!arg_join_controllers
[0] || !arg_join_controllers
[1]) {
1149 free_join_controllers();
1156 static int enforce_syscall_archs(Set
*archs
) {
1158 scmp_filter_ctx
*seccomp
;
1163 seccomp
= seccomp_init(SCMP_ACT_ALLOW
);
1167 SET_FOREACH(id
, arg_syscall_archs
, i
) {
1168 r
= seccomp_arch_add(seccomp
, PTR_TO_UINT32(id
) - 1);
1172 log_error_errno(r
, "Failed to add architecture to seccomp: %m");
1177 r
= seccomp_attr_set(seccomp
, SCMP_FLTATR_CTL_NNP
, 0);
1179 log_error_errno(r
, "Failed to unset NO_NEW_PRIVS: %m");
1183 r
= seccomp_load(seccomp
);
1185 log_error_errno(r
, "Failed to add install architecture seccomp: %m");
1188 seccomp_release(seccomp
);
1195 static int status_welcome(void) {
1196 _cleanup_free_
char *pretty_name
= NULL
, *ansi_color
= NULL
;
1199 r
= parse_env_file("/etc/os-release", NEWLINE
,
1200 "PRETTY_NAME", &pretty_name
,
1201 "ANSI_COLOR", &ansi_color
,
1204 r
= parse_env_file("/usr/lib/os-release", NEWLINE
,
1205 "PRETTY_NAME", &pretty_name
,
1206 "ANSI_COLOR", &ansi_color
,
1210 if (r
< 0 && r
!= -ENOENT
)
1211 log_warning_errno(r
, "Failed to read os-release file: %m");
1213 return status_printf(NULL
, false, false,
1214 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1215 isempty(ansi_color
) ? "1" : ansi_color
,
1216 isempty(pretty_name
) ? "Linux" : pretty_name
);
1219 static int write_container_id(void) {
1222 c
= getenv("container");
1226 return write_string_file("/run/systemd/container", c
, WRITE_STRING_FILE_CREATE
);
1229 int main(int argc
, char *argv
[]) {
1231 int r
, retval
= EXIT_FAILURE
;
1232 usec_t before_startup
, after_startup
;
1233 char timespan
[FORMAT_TIMESPAN_MAX
];
1235 bool reexecute
= false;
1236 const char *shutdown_verb
= NULL
;
1237 dual_timestamp initrd_timestamp
= DUAL_TIMESTAMP_NULL
;
1238 dual_timestamp userspace_timestamp
= DUAL_TIMESTAMP_NULL
;
1239 dual_timestamp kernel_timestamp
= DUAL_TIMESTAMP_NULL
;
1240 dual_timestamp security_start_timestamp
= DUAL_TIMESTAMP_NULL
;
1241 dual_timestamp security_finish_timestamp
= DUAL_TIMESTAMP_NULL
;
1242 static char systemd
[] = "systemd";
1243 bool skip_setup
= false;
1245 bool loaded_policy
= false;
1246 bool arm_reboot_watchdog
= false;
1247 bool queue_default_job
= false;
1248 bool empty_etc
= false;
1249 char *switch_root_dir
= NULL
, *switch_root_init
= NULL
;
1250 struct rlimit saved_rlimit_nofile
= RLIMIT_MAKE_CONST(0);
1251 const char *error_message
= NULL
;
1253 #ifdef HAVE_SYSV_COMPAT
1254 if (getpid() != 1 && strstr(program_invocation_short_name
, "init")) {
1255 /* This is compatibility support for SysV, where
1256 * calling init as a user is identical to telinit. */
1259 execv(SYSTEMCTL_BINARY_PATH
, argv
);
1260 log_error_errno(errno
, "Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
1265 dual_timestamp_from_monotonic(&kernel_timestamp
, 0);
1266 dual_timestamp_get(&userspace_timestamp
);
1268 /* Determine if this is a reexecution or normal bootup. We do
1269 * the full command line parsing much later, so let's just
1270 * have a quick peek here. */
1271 if (strv_find(argv
+1, "--deserialize"))
1274 /* If we have switched root, do all the special setup
1276 if (strv_find(argv
+1, "--switched-root"))
1279 /* If we get started via the /sbin/init symlink then we are
1280 called 'init'. After a subsequent reexecution we are then
1281 called 'systemd'. That is confusing, hence let's call us
1282 systemd right-away. */
1283 program_invocation_short_name
= systemd
;
1284 prctl(PR_SET_NAME
, systemd
);
1289 log_show_color(isatty(STDERR_FILENO
) > 0);
1290 log_set_upgrade_syslog_to_journal(true);
1292 /* Disable the umask logic */
1296 if (getpid() == 1 && detect_container(NULL
) <= 0) {
1298 /* Running outside of a container as PID 1 */
1299 arg_running_as
= MANAGER_SYSTEM
;
1301 log_set_target(LOG_TARGET_KMSG
);
1305 initrd_timestamp
= userspace_timestamp
;
1308 mount_setup_early();
1309 dual_timestamp_get(&security_start_timestamp
);
1310 if (mac_selinux_setup(&loaded_policy
) < 0) {
1311 error_message
= "Failed to load SELinux policy";
1313 } else if (ima_setup() < 0) {
1314 error_message
= "Failed to load IMA policy";
1316 } else if (mac_smack_setup(&loaded_policy
) < 0) {
1317 error_message
= "Failed to load SMACK policy";
1320 dual_timestamp_get(&security_finish_timestamp
);
1323 if (mac_selinux_init(NULL
) < 0) {
1324 error_message
= "Failed to initialize SELinux policy";
1329 if (clock_is_localtime() > 0) {
1333 * The very first call of settimeofday() also does a time warp in the kernel.
1335 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on
1336 * external tools to take care of maintaining the RTC and do all adjustments.
1337 * This matches the behavior of Windows, which leaves the RTC alone if the
1338 * registry tells that the RTC runs in UTC.
1340 r
= clock_set_timezone(&min
);
1342 log_error_errno(r
, "Failed to apply local time delta, ignoring: %m");
1344 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min
);
1345 } else if (!in_initrd()) {
1347 * Do a dummy very first call to seal the kernel's time warp magic.
1349 * Do not call this this from inside the initrd. The initrd might not
1350 * carry /etc/adjtime with LOCAL, but the real system could be set up
1351 * that way. In such case, we need to delay the time-warp or the sealing
1352 * until we reach the real system.
1354 * Do no set the kernel's timezone. The concept of local time cannot
1355 * be supported reliably, the time will jump or be incorrect at every daylight
1356 * saving time change. All kernel local time concepts will be treated
1359 clock_reset_timewarp();
1363 /* Set the default for later on, but don't actually
1364 * open the logs like this for now. Note that if we
1365 * are transitioning from the initrd there might still
1366 * be journal fd open, and we shouldn't attempt
1367 * opening that before we parsed /proc/cmdline which
1368 * might redirect output elsewhere. */
1369 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG
);
1371 } else if (getpid() == 1) {
1372 /* Running inside a container, as PID 1 */
1373 arg_running_as
= MANAGER_SYSTEM
;
1374 log_set_target(LOG_TARGET_CONSOLE
);
1375 log_close_console(); /* force reopen of /dev/console */
1378 /* For the later on, see above... */
1379 log_set_target(LOG_TARGET_JOURNAL
);
1381 /* clear the kernel timestamp,
1382 * because we are in a container */
1383 kernel_timestamp
.monotonic
= 0ULL;
1384 kernel_timestamp
.realtime
= 0ULL;
1387 /* Running as user instance */
1388 arg_running_as
= MANAGER_USER
;
1389 log_set_target(LOG_TARGET_AUTO
);
1392 /* clear the kernel timestamp,
1393 * because we are not PID 1 */
1394 kernel_timestamp
.monotonic
= 0ULL;
1395 kernel_timestamp
.realtime
= 0ULL;
1398 /* Initialize default unit */
1399 r
= set_default_unit(SPECIAL_DEFAULT_TARGET
);
1401 log_emergency_errno(r
, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET
);
1402 error_message
= "Failed to set default unit";
1406 r
= initialize_join_controllers();
1408 error_message
= "Failed to initialize cgroup controllers";
1412 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1413 * /proc/$PID/fd is available. */
1414 if (getpid() == 1) {
1416 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
1420 r
= mount_setup(loaded_policy
);
1422 error_message
= "Failed to mount API filesystems";
1427 /* Reset all signal handlers. */
1428 (void) reset_all_signal_handlers();
1429 (void) ignore_signals(SIGNALS_IGNORE
, -1);
1431 if (parse_config_file() < 0) {
1432 error_message
= "Failed to parse config file";
1436 if (arg_running_as
== MANAGER_SYSTEM
) {
1437 r
= parse_proc_cmdline(parse_proc_cmdline_item
);
1439 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
1442 /* Note that this also parses bits from the kernel command
1443 * line, including "debug". */
1444 log_parse_environment();
1446 if (parse_argv(argc
, argv
) < 0) {
1447 error_message
= "Failed to parse commandline arguments";
1451 if (arg_action
== ACTION_TEST
&&
1453 log_error("Don't run test mode as root.");
1457 if (arg_running_as
== MANAGER_USER
&&
1458 arg_action
== ACTION_RUN
&&
1460 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1464 if (arg_running_as
== MANAGER_SYSTEM
&&
1465 arg_action
== ACTION_RUN
&&
1466 running_in_chroot() > 0) {
1467 log_error("Cannot be run in a chroot() environment.");
1471 if (arg_action
== ACTION_TEST
)
1474 pager_open_if_enabled();
1476 if (arg_action
== ACTION_HELP
) {
1479 } else if (arg_action
== ACTION_VERSION
) {
1482 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
1483 unit_dump_config_items(stdout
);
1484 retval
= EXIT_SUCCESS
;
1486 } else if (arg_action
== ACTION_DONE
) {
1487 retval
= EXIT_SUCCESS
;
1491 if (arg_running_as
== MANAGER_USER
&&
1492 !getenv("XDG_RUNTIME_DIR")) {
1493 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1497 assert_se(arg_action
== ACTION_RUN
|| arg_action
== ACTION_TEST
);
1499 /* Close logging fds, in order not to confuse fdset below */
1502 /* Remember open file descriptors for later deserialization */
1503 r
= fdset_new_fill(&fds
);
1505 log_emergency_errno(r
, "Failed to allocate fd set: %m");
1506 error_message
= "Failed to allocate fd set";
1509 fdset_cloexec(fds
, true);
1511 if (arg_serialization
)
1512 assert_se(fdset_remove(fds
, fileno(arg_serialization
)) >= 0);
1514 if (arg_running_as
== MANAGER_SYSTEM
)
1515 /* Become a session leader if we aren't one yet. */
1518 /* Move out of the way, so that we won't block unmounts */
1519 assert_se(chdir("/") == 0);
1521 /* Reset the console, but only if this is really init and we
1522 * are freshly booted */
1523 if (arg_running_as
== MANAGER_SYSTEM
&& arg_action
== ACTION_RUN
) {
1525 /* If we are init, we connect stdin/stdout/stderr to
1526 * /dev/null and make sure we don't have a controlling
1530 if (getpid() == 1 && !skip_setup
)
1534 /* Open the logging devices, if possible and necessary */
1537 if (arg_show_status
== _SHOW_STATUS_UNSET
)
1538 arg_show_status
= SHOW_STATUS_YES
;
1540 /* Make sure we leave a core dump without panicing the
1542 if (getpid() == 1) {
1543 install_crash_handler();
1545 r
= mount_cgroup_controllers(arg_join_controllers
);
1550 if (arg_running_as
== MANAGER_SYSTEM
) {
1551 const char *virtualization
= NULL
;
1553 log_info(PACKAGE_STRING
" running in %ssystem mode. (" SYSTEMD_FEATURES
")",
1554 arg_action
== ACTION_TEST
? "test " : "" );
1556 detect_virtualization(&virtualization
);
1558 log_info("Detected virtualization %s.", virtualization
);
1560 write_container_id();
1562 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1565 log_info("Running in initial RAM disk.");
1567 /* Let's check whether /etc is already populated. We
1568 * don't actually really check for that, but use
1569 * /etc/machine-id as flag file. This allows container
1570 * managers and installers to provision a couple of
1571 * files already. If the container manager wants to
1572 * provision the machine ID itself it should pass
1573 * $container_uuid to PID 1. */
1575 empty_etc
= access("/etc/machine-id", F_OK
) < 0;
1577 log_info("Running with unpopulated /etc.");
1579 _cleanup_free_
char *t
;
1581 t
= uid_to_name(getuid());
1582 log_debug(PACKAGE_STRING
" running in %suser mode for user "UID_FMT
"/%s. (" SYSTEMD_FEATURES
")",
1583 arg_action
== ACTION_TEST
? " test" : "", getuid(), t
);
1586 if (arg_running_as
== MANAGER_SYSTEM
&& !skip_setup
) {
1587 if (arg_show_status
> 0)
1591 machine_id_setup(NULL
);
1598 if (arg_running_as
== MANAGER_SYSTEM
&& arg_runtime_watchdog
> 0)
1599 watchdog_set_timeout(&arg_runtime_watchdog
);
1601 if (arg_timer_slack_nsec
!= NSEC_INFINITY
)
1602 if (prctl(PR_SET_TIMERSLACK
, arg_timer_slack_nsec
) < 0)
1603 log_error_errno(errno
, "Failed to adjust timer slack: %m");
1605 if (arg_capability_bounding_set_drop
) {
1606 r
= capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop
);
1608 log_emergency_errno(r
, "Failed to drop capability bounding set of usermode helpers: %m");
1609 error_message
= "Failed to drop capability bounding set of usermode helpers";
1612 r
= capability_bounding_set_drop(arg_capability_bounding_set_drop
, true);
1614 log_emergency_errno(r
, "Failed to drop capability bounding set: %m");
1615 error_message
= "Failed to drop capability bounding set";
1620 if (arg_syscall_archs
) {
1621 r
= enforce_syscall_archs(arg_syscall_archs
);
1623 error_message
= "Failed to set syscall architectures";
1628 if (arg_running_as
== MANAGER_USER
)
1629 /* Become reaper of our children */
1630 if (prctl(PR_SET_CHILD_SUBREAPER
, 1) < 0)
1631 log_warning_errno(errno
, "Failed to make us a subreaper: %m");
1633 if (arg_running_as
== MANAGER_SYSTEM
) {
1634 bump_rlimit_nofile(&saved_rlimit_nofile
);
1637 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, false, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, false, NULL
, 0);
1639 log_warning_errno(r
, "Failed to populate /etc with preset unit settings, ignoring: %m");
1641 log_info("Populated /etc with preset unit settings.");
1645 r
= manager_new(arg_running_as
, arg_action
== ACTION_TEST
, &m
);
1647 log_emergency_errno(r
, "Failed to allocate manager object: %m");
1648 error_message
= "Failed to allocate manager object";
1652 m
->confirm_spawn
= arg_confirm_spawn
;
1653 m
->runtime_watchdog
= arg_runtime_watchdog
;
1654 m
->shutdown_watchdog
= arg_shutdown_watchdog
;
1655 m
->userspace_timestamp
= userspace_timestamp
;
1656 m
->kernel_timestamp
= kernel_timestamp
;
1657 m
->initrd_timestamp
= initrd_timestamp
;
1658 m
->security_start_timestamp
= security_start_timestamp
;
1659 m
->security_finish_timestamp
= security_finish_timestamp
;
1661 manager_set_defaults(m
);
1662 manager_set_show_status(m
, arg_show_status
);
1663 manager_set_first_boot(m
, empty_etc
);
1665 /* Remember whether we should queue the default job */
1666 queue_default_job
= !arg_serialization
|| arg_switched_root
;
1668 before_startup
= now(CLOCK_MONOTONIC
);
1670 r
= manager_startup(m
, arg_serialization
, fds
);
1672 log_error_errno(r
, "Failed to fully start up daemon: %m");
1674 /* This will close all file descriptors that were opened, but
1675 * not claimed by any unit. */
1679 if (arg_serialization
) {
1680 fclose(arg_serialization
);
1681 arg_serialization
= NULL
;
1684 if (queue_default_job
) {
1685 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1686 Unit
*target
= NULL
;
1687 Job
*default_unit_job
;
1689 log_debug("Activating default unit: %s", arg_default_unit
);
1691 r
= manager_load_unit(m
, arg_default_unit
, NULL
, &error
, &target
);
1693 log_error("Failed to load default target: %s", bus_error_message(&error
, r
));
1694 else if (target
->load_state
== UNIT_ERROR
|| target
->load_state
== UNIT_NOT_FOUND
)
1695 log_error_errno(target
->load_error
, "Failed to load default target: %m");
1696 else if (target
->load_state
== UNIT_MASKED
)
1697 log_error("Default target masked.");
1699 if (!target
|| target
->load_state
!= UNIT_LOADED
) {
1700 log_info("Trying to load rescue target...");
1702 r
= manager_load_unit(m
, SPECIAL_RESCUE_TARGET
, NULL
, &error
, &target
);
1704 log_emergency("Failed to load rescue target: %s", bus_error_message(&error
, r
));
1705 error_message
= "Failed to load rescue target";
1707 } else if (target
->load_state
== UNIT_ERROR
|| target
->load_state
== UNIT_NOT_FOUND
) {
1708 log_emergency_errno(target
->load_error
, "Failed to load rescue target: %m");
1709 error_message
= "Failed to load rescue target";
1711 } else if (target
->load_state
== UNIT_MASKED
) {
1712 log_emergency("Rescue target masked.");
1713 error_message
= "Rescue target masked";
1718 assert(target
->load_state
== UNIT_LOADED
);
1720 if (arg_action
== ACTION_TEST
) {
1721 printf("-> By units:\n");
1722 manager_dump_units(m
, stdout
, "\t");
1725 r
= manager_add_job(m
, JOB_START
, target
, JOB_ISOLATE
, false, &error
, &default_unit_job
);
1727 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error
, r
));
1729 r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, false, &error
, &default_unit_job
);
1731 log_emergency("Failed to start default target: %s", bus_error_message(&error
, r
));
1732 error_message
= "Failed to start default target";
1736 log_emergency("Failed to isolate default target: %s", bus_error_message(&error
, r
));
1737 error_message
= "Failed to isolate default target";
1741 m
->default_unit_job_id
= default_unit_job
->id
;
1743 after_startup
= now(CLOCK_MONOTONIC
);
1744 log_full(arg_action
== ACTION_TEST
? LOG_INFO
: LOG_DEBUG
,
1745 "Loaded units and determined initial transaction in %s.",
1746 format_timespan(timespan
, sizeof(timespan
), after_startup
- before_startup
, 100 * USEC_PER_MSEC
));
1748 if (arg_action
== ACTION_TEST
) {
1749 printf("-> By jobs:\n");
1750 manager_dump_jobs(m
, stdout
, "\t");
1751 retval
= EXIT_SUCCESS
;
1757 r
= manager_loop(m
);
1759 log_emergency_errno(r
, "Failed to run main loop: %m");
1760 error_message
= "Failed to run main loop";
1764 switch (m
->exit_code
) {
1767 retval
= EXIT_SUCCESS
;
1771 case MANAGER_RELOAD
:
1772 log_info("Reloading.");
1774 r
= parse_config_file();
1776 log_error("Failed to parse config file.");
1778 manager_set_defaults(m
);
1780 r
= manager_reload(m
);
1782 log_error_errno(r
, "Failed to reload: %m");
1785 case MANAGER_REEXECUTE
:
1787 if (prepare_reexecute(m
, &arg_serialization
, &fds
, false) < 0) {
1788 error_message
= "Failed to prepare for reexection";
1793 log_notice("Reexecuting.");
1796 case MANAGER_SWITCH_ROOT
:
1797 /* Steal the switch root parameters */
1798 switch_root_dir
= m
->switch_root
;
1799 switch_root_init
= m
->switch_root_init
;
1800 m
->switch_root
= m
->switch_root_init
= NULL
;
1802 if (!switch_root_init
)
1803 if (prepare_reexecute(m
, &arg_serialization
, &fds
, true) < 0) {
1804 error_message
= "Failed to prepare for reexection";
1809 log_notice("Switching root.");
1812 case MANAGER_REBOOT
:
1813 case MANAGER_POWEROFF
:
1815 case MANAGER_KEXEC
: {
1816 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1817 [MANAGER_REBOOT
] = "reboot",
1818 [MANAGER_POWEROFF
] = "poweroff",
1819 [MANAGER_HALT
] = "halt",
1820 [MANAGER_KEXEC
] = "kexec"
1823 assert_se(shutdown_verb
= table
[m
->exit_code
]);
1824 arm_reboot_watchdog
= m
->exit_code
== MANAGER_REBOOT
;
1826 log_notice("Shutting down.");
1831 assert_not_reached("Unknown exit code.");
1839 arg_shutdown_watchdog
= m
->shutdown_watchdog
;
1840 m
= manager_free(m
);
1842 for (j
= 0; j
< ELEMENTSOF(arg_default_rlimit
); j
++) {
1843 free(arg_default_rlimit
[j
]);
1844 arg_default_rlimit
[j
] = NULL
;
1847 free(arg_default_unit
);
1848 arg_default_unit
= NULL
;
1850 free_join_controllers();
1852 strv_free(arg_default_environment
);
1853 arg_default_environment
= NULL
;
1855 set_free(arg_syscall_archs
);
1856 arg_syscall_archs
= NULL
;
1858 mac_selinux_finish();
1862 unsigned i
, args_size
;
1864 /* Close and disarm the watchdog, so that the new
1865 * instance can reinitialize it, but doesn't get
1866 * rebooted while we do that */
1867 watchdog_close(true);
1869 /* Reset the RLIMIT_NOFILE to the kernel default, so
1870 * that the new systemd can pass the kernel default to
1871 * its child processes */
1872 if (saved_rlimit_nofile
.rlim_cur
> 0)
1873 setrlimit(RLIMIT_NOFILE
, &saved_rlimit_nofile
);
1875 if (switch_root_dir
) {
1876 /* Kill all remaining processes from the
1877 * initrd, but don't wait for them, so that we
1878 * can handle the SIGCHLD for them after
1880 broadcast_signal(SIGTERM
, false, true);
1882 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1883 r
= switch_root(switch_root_dir
, "/mnt", true, MS_MOVE
);
1885 log_error_errno(r
, "Failed to switch root, trying to continue: %m");
1888 args_size
= MAX(6, argc
+1);
1889 args
= newa(const char*, args_size
);
1891 if (!switch_root_init
) {
1892 char sfd
[DECIMAL_STR_MAX(int) + 1];
1894 /* First try to spawn ourselves with the right
1895 * path, and with full serialization. We do
1896 * this only if the user didn't specify an
1897 * explicit init to spawn. */
1899 assert(arg_serialization
);
1902 xsprintf(sfd
, "%i", fileno(arg_serialization
));
1905 args
[i
++] = SYSTEMD_BINARY_PATH
;
1906 if (switch_root_dir
)
1907 args
[i
++] = "--switched-root";
1908 args
[i
++] = arg_running_as
== MANAGER_SYSTEM
? "--system" : "--user";
1909 args
[i
++] = "--deserialize";
1913 /* do not pass along the environment we inherit from the kernel or initrd */
1914 if (switch_root_dir
)
1917 assert(i
<= args_size
);
1918 execv(args
[0], (char* const*) args
);
1921 /* Try the fallback, if there is any, without any
1922 * serialization. We pass the original argv[] and
1923 * envp[]. (Well, modulo the ordering changes due to
1924 * getopt() in argv[], and some cleanups in envp[],
1925 * but let's hope that doesn't matter.) */
1927 if (arg_serialization
) {
1928 fclose(arg_serialization
);
1929 arg_serialization
= NULL
;
1937 /* Reopen the console */
1938 make_console_stdio();
1940 for (j
= 1, i
= 1; j
< (unsigned) argc
; j
++)
1941 args
[i
++] = argv
[j
];
1943 assert(i
<= args_size
);
1945 /* Reenable any blocked signals, especially important
1946 * if we switch from initial ramdisk to init=... */
1947 (void) reset_all_signal_handlers();
1948 (void) reset_signal_mask();
1950 if (switch_root_init
) {
1951 args
[0] = switch_root_init
;
1952 execv(args
[0], (char* const*) args
);
1953 log_warning_errno(errno
, "Failed to execute configured init, trying fallback: %m");
1956 args
[0] = "/sbin/init";
1957 execv(args
[0], (char* const*) args
);
1959 if (errno
== ENOENT
) {
1960 log_warning("No /sbin/init, trying fallback");
1962 args
[0] = "/bin/sh";
1964 execv(args
[0], (char* const*) args
);
1965 log_error_errno(errno
, "Failed to execute /bin/sh, giving up: %m");
1967 log_warning_errno(errno
, "Failed to execute /sbin/init, giving up: %m");
1970 if (arg_serialization
) {
1971 fclose(arg_serialization
);
1972 arg_serialization
= NULL
;
1980 #ifdef HAVE_VALGRIND_VALGRIND_H
1981 /* If we are PID 1 and running under valgrind, then let's exit
1982 * here explicitly. valgrind will only generate nice output on
1983 * exit(), not on exec(), hence let's do the former not the
1985 if (getpid() == 1 && RUNNING_ON_VALGRIND
)
1989 if (shutdown_verb
) {
1990 char log_level
[DECIMAL_STR_MAX(int) + 1];
1991 const char* command_line
[9] = {
1992 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1994 "--log-level", log_level
,
1998 _cleanup_strv_free_
char **env_block
= NULL
;
2000 assert(command_line
[pos
] == NULL
);
2001 env_block
= strv_copy(environ
);
2003 xsprintf(log_level
, "%d", log_get_max_level());
2005 switch (log_get_target()) {
2006 case LOG_TARGET_KMSG
:
2007 case LOG_TARGET_JOURNAL_OR_KMSG
:
2008 case LOG_TARGET_SYSLOG_OR_KMSG
:
2009 command_line
[pos
++] = "kmsg";
2012 case LOG_TARGET_NULL
:
2013 command_line
[pos
++] = "null";
2016 case LOG_TARGET_CONSOLE
:
2018 command_line
[pos
++] = "console";
2022 if (log_get_show_color())
2023 command_line
[pos
++] = "--log-color";
2025 if (log_get_show_location())
2026 command_line
[pos
++] = "--log-location";
2028 assert(pos
< ELEMENTSOF(command_line
));
2030 if (arm_reboot_watchdog
&& arg_shutdown_watchdog
> 0) {
2033 /* If we reboot let's set the shutdown
2034 * watchdog and tell the shutdown binary to
2035 * repeatedly ping it */
2036 r
= watchdog_set_timeout(&arg_shutdown_watchdog
);
2037 watchdog_close(r
< 0);
2039 /* Tell the binary how often to ping, ignore failure */
2040 if (asprintf(&e
, "WATCHDOG_USEC="USEC_FMT
, arg_shutdown_watchdog
) > 0)
2041 strv_push(&env_block
, e
);
2043 watchdog_close(true);
2045 /* Avoid the creation of new processes forked by the
2046 * kernel; at this point, we will not listen to the
2048 if (detect_container(NULL
) <= 0)
2049 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER
);
2051 execve(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
, env_block
);
2052 log_error_errno(errno
, "Failed to execute shutdown binary, %s: %m",
2053 getpid() == 1 ? "freezing" : "quitting");
2056 if (getpid() == 1) {
2058 manager_status_printf(NULL
, STATUS_TYPE_EMERGENCY
,
2059 ANSI_HIGHLIGHT_RED_ON
"!!!!!!" ANSI_HIGHLIGHT_OFF
,
2060 "%s, freezing.", error_message
);