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 General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <dbus/dbus.h>
28 #include <sys/types.h>
37 #include "mount-setup.h"
38 #include "hostname-setup.h"
39 #include "loopback-setup.h"
40 #include "kmod-setup.h"
41 #include "load-fragment.h"
44 #include "conf-parser.h"
45 #include "bus-errors.h"
54 ACTION_DUMP_CONFIGURATION_ITEMS
,
56 } arg_action
= ACTION_RUN
;
58 static char *arg_default_unit
= NULL
;
59 static ManagerRunningAs arg_running_as
= _MANAGER_RUNNING_AS_INVALID
;
61 static bool arg_dump_core
= true;
62 static bool arg_crash_shell
= false;
63 static int arg_crash_chvt
= -1;
64 static bool arg_confirm_spawn
= false;
65 static bool arg_show_status
= true;
66 static bool arg_sysv_console
= true;
67 static bool arg_mount_auto
= true;
68 static bool arg_swap_auto
= true;
69 static char *arg_console
= NULL
;
71 static FILE* serialization
= NULL
;
73 _noreturn_
static void freeze(void) {
78 static void nop_handler(int sig
) {
81 _noreturn_
static void crash(int sig
) {
84 log_error("Caught <%s>, not dumping core.", signal_to_string(sig
));
89 /* We want to wait for the core process, hence let's enable SIGCHLD */
91 sa
.sa_handler
= nop_handler
;
92 sa
.sa_flags
= SA_NOCLDSTOP
|SA_RESTART
;
93 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
95 if ((pid
= fork()) < 0)
96 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig
), strerror(errno
));
101 /* Enable default signal handler for core dump */
103 sa
.sa_handler
= SIG_DFL
;
104 assert_se(sigaction(sig
, &sa
, NULL
) == 0);
106 /* Don't limit the core dump size */
108 rl
.rlim_cur
= RLIM_INFINITY
;
109 rl
.rlim_max
= RLIM_INFINITY
;
110 setrlimit(RLIMIT_CORE
, &rl
);
112 /* Just to be sure... */
113 assert_se(chdir("/") == 0);
115 /* Raise the signal again */
118 assert_not_reached("We shouldn't be here...");
124 /* Order things nicely. */
125 if (waitpid(pid
, &status
, 0) < 0)
126 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig
), strerror(errno
));
127 else if (!WCOREDUMP(status
))
128 log_error("Caught <%s>, core dump failed.", signal_to_string(sig
));
130 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig
), (unsigned long) pid
);
135 chvt(arg_crash_chvt
);
137 if (arg_crash_shell
) {
141 log_info("Executing crash shell in 10s...");
144 /* Let the kernel reap children for us */
146 sa
.sa_handler
= SIG_IGN
;
147 sa
.sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
;
148 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
150 if ((pid
= fork()) < 0)
151 log_error("Failed to fork off crash shell: %s", strerror(errno
));
155 if ((fd
= acquire_terminal("/dev/console", false, true, true)) < 0)
156 log_error("Failed to acquire terminal: %s", strerror(-fd
));
157 else if ((r
= make_stdio(fd
)) < 0)
158 log_error("Failed to duplicate terminal fd: %s", strerror(-r
));
160 execl("/bin/sh", "/bin/sh", NULL
);
162 log_error("execl() failed: %s", strerror(errno
));
166 log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid
);
169 log_info("Freezing execution.");
173 static void install_crash_handler(void) {
178 sa
.sa_handler
= crash
;
179 sa
.sa_flags
= SA_NODEFER
;
181 sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
184 static int make_null_stdio(void) {
187 if ((null_fd
= open("/dev/null", O_RDWR
|O_NOCTTY
)) < 0) {
188 log_error("Failed to open /dev/null: %m");
192 if ((r
= make_stdio(null_fd
)) < 0)
193 log_warning("Failed to dup2() device: %s", strerror(-r
));
198 static int console_setup(bool do_reset
) {
201 /* If we are init, we connect stdin/stdout/stderr to /dev/null
202 * and make sure we don't have a controlling tty. */
209 if ((tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
)) < 0) {
210 log_error("Failed to open /dev/console: %s", strerror(-tty_fd
));
214 if ((r
= reset_terminal(tty_fd
)) < 0)
215 log_error("Failed to reset /dev/console: %s", strerror(-r
));
217 close_nointr_nofail(tty_fd
);
221 static int set_default_unit(const char *u
) {
226 if (!(c
= strdup(u
)))
229 free(arg_default_unit
);
230 arg_default_unit
= c
;
234 static int parse_proc_cmdline_word(const char *word
) {
236 static const char * const rlmap
[] = {
237 "single", SPECIAL_RESCUE_TARGET
,
238 "-s", SPECIAL_RESCUE_TARGET
,
239 "s", SPECIAL_RESCUE_TARGET
,
240 "S", SPECIAL_RESCUE_TARGET
,
241 "1", SPECIAL_RESCUE_TARGET
,
242 "2", SPECIAL_RUNLEVEL2_TARGET
,
243 "3", SPECIAL_RUNLEVEL3_TARGET
,
244 "4", SPECIAL_RUNLEVEL4_TARGET
,
245 "5", SPECIAL_RUNLEVEL5_TARGET
250 if (startswith(word
, "systemd.unit="))
251 return set_default_unit(word
+ 13);
253 else if (startswith(word
, "systemd.log_target=")) {
255 if (log_set_target_from_string(word
+ 19) < 0)
256 log_warning("Failed to parse log target %s. Ignoring.", word
+ 19);
258 } else if (startswith(word
, "systemd.log_level=")) {
260 if (log_set_max_level_from_string(word
+ 18) < 0)
261 log_warning("Failed to parse log level %s. Ignoring.", word
+ 18);
263 } else if (startswith(word
, "systemd.log_color=")) {
265 if (log_show_color_from_string(word
+ 18) < 0)
266 log_warning("Failed to parse log color setting %s. Ignoring.", word
+ 18);
268 } else if (startswith(word
, "systemd.log_location=")) {
270 if (log_show_location_from_string(word
+ 21) < 0)
271 log_warning("Failed to parse log location setting %s. Ignoring.", word
+ 21);
273 } else if (startswith(word
, "systemd.dump_core=")) {
276 if ((r
= parse_boolean(word
+ 18)) < 0)
277 log_warning("Failed to parse dump core switch %s, Ignoring.", word
+ 18);
281 } else if (startswith(word
, "systemd.crash_shell=")) {
284 if ((r
= parse_boolean(word
+ 20)) < 0)
285 log_warning("Failed to parse crash shell switch %s, Ignoring.", word
+ 20);
289 } else if (startswith(word
, "systemd.confirm_spawn=")) {
292 if ((r
= parse_boolean(word
+ 22)) < 0)
293 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word
+ 22);
295 arg_confirm_spawn
= r
;
297 } else if (startswith(word
, "systemd.crash_chvt=")) {
300 if (safe_atoi(word
+ 19, &k
) < 0)
301 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word
+ 19);
305 } else if (startswith(word
, "systemd.show_status=")) {
308 if ((r
= parse_boolean(word
+ 20)) < 0)
309 log_warning("Failed to parse show status switch %s, Ignoring.", word
+ 20);
313 } else if (startswith(word
, "systemd.sysv_console=")) {
316 if ((r
= parse_boolean(word
+ 21)) < 0)
317 log_warning("Failed to parse SysV console switch %s, Ignoring.", word
+ 20);
319 arg_sysv_console
= r
;
321 } else if (startswith(word
, "systemd.")) {
323 log_warning("Unknown kernel switch %s. Ignoring.", word
);
325 log_info("Supported kernel switches:\n"
326 "systemd.unit=UNIT Default unit to start\n"
327 "systemd.dump_core=0|1 Dump core on crash\n"
328 "systemd.crash_shell=0|1 Run shell on crash\n"
329 "systemd.crash_chvt=N Change to VT #N on crash\n"
330 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
331 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
332 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
333 "systemd.log_target=console|kmsg|syslog|syslog-org-kmsg|null\n"
335 "systemd.log_level=LEVEL Log level\n"
336 "systemd.log_color=0|1 Highlight important log messages\n"
337 "systemd.log_location=0|1 Include code location in log messages\n");
339 } else if (startswith(word
, "console=")) {
347 /* Ignore the console setting if set to a VT */
349 !startswith(k
, "tty") ||
350 k
[3+strspn(k
+3, "0123456789")] != 0) {
352 if (!(w
= strndup(k
, l
)))
359 } else if (streq(word
, "quiet")) {
360 arg_show_status
= false;
361 arg_sysv_console
= false;
365 /* SysV compatibility */
366 for (i
= 0; i
< ELEMENTSOF(rlmap
); i
+= 2)
367 if (streq(word
, rlmap
[i
]))
368 return set_default_unit(rlmap
[i
+1]);
374 static int config_parse_level(
375 const char *filename
,
387 log_set_max_level_from_string(rvalue
);
391 static int config_parse_target(
392 const char *filename
,
404 log_set_target_from_string(rvalue
);
408 static int config_parse_color(
409 const char *filename
,
421 log_show_color_from_string(rvalue
);
425 static int config_parse_location(
426 const char *filename
,
438 log_show_location_from_string(rvalue
);
442 static int config_parse_cpu_affinity(
443 const char *filename
,
461 FOREACH_WORD_QUOTED(w
, l
, rvalue
, state
) {
466 if (!(t
= strndup(w
, l
)))
469 r
= safe_atou(t
, &cpu
);
473 if (!(c
= cpu_set_malloc(&ncpus
)))
476 if (r
< 0 || cpu
>= ncpus
) {
477 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename
, line
, rvalue
);
482 CPU_SET_S(cpu
, CPU_ALLOC_SIZE(ncpus
), c
);
486 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
487 log_warning("Failed to set CPU affinity: %m");
495 static int parse_config_file(void) {
497 const ConfigItem items
[] = {
498 { "LogLevel", config_parse_level
, NULL
, "Manager" },
499 { "LogTarget", config_parse_target
, NULL
, "Manager" },
500 { "LogColor", config_parse_color
, NULL
, "Manager" },
501 { "LogLocation", config_parse_location
, NULL
, "Manager" },
502 { "DumpCore", config_parse_bool
, &arg_dump_core
, "Manager" },
503 { "CrashShell", config_parse_bool
, &arg_crash_shell
, "Manager" },
504 { "ShowStatus", config_parse_bool
, &arg_show_status
, "Manager" },
505 { "SysVConsole", config_parse_bool
, &arg_sysv_console
, "Manager" },
506 { "CrashChVT", config_parse_int
, &arg_crash_chvt
, "Manager" },
507 { "CPUAffinity", config_parse_cpu_affinity
, NULL
, "Manager" },
508 { "MountAuto", config_parse_bool
, &arg_mount_auto
, "Manager" },
509 { "SwapAuto", config_parse_bool
, &arg_swap_auto
, "Manager" },
510 { NULL
, NULL
, NULL
, NULL
}
513 static const char * const sections
[] = {
522 fn
= arg_running_as
== MANAGER_SYSTEM
? SYSTEM_CONFIG_FILE
: SESSION_CONFIG_FILE
;
524 if (!(f
= fopen(fn
, "re"))) {
528 log_warning("Failed to open configuration file '%s': %m", fn
);
532 if ((r
= config_parse(fn
, f
, sections
, items
, false, NULL
)) < 0)
533 log_warning("Failed to parse configuration file: %s", strerror(-r
));
540 static int parse_proc_cmdline(void) {
547 if ((r
= read_one_line_file("/proc/cmdline", &line
)) < 0) {
548 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r
));
552 FOREACH_WORD_QUOTED(w
, l
, line
, state
) {
555 if (!(word
= strndup(w
, l
))) {
560 r
= parse_proc_cmdline_word(word
);
574 static int parse_argv(int argc
, char *argv
[]) {
577 ARG_LOG_LEVEL
= 0x100,
585 ARG_DUMP_CONFIGURATION_ITEMS
,
595 static const struct option options
[] = {
596 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
597 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
598 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
599 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
600 { "unit", required_argument
, NULL
, ARG_UNIT
},
601 { "system", no_argument
, NULL
, ARG_SYSTEM
},
602 { "session", no_argument
, NULL
, ARG_SESSION
},
603 { "test", no_argument
, NULL
, ARG_TEST
},
604 { "help", no_argument
, NULL
, 'h' },
605 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
606 { "dump-core", no_argument
, NULL
, ARG_DUMP_CORE
},
607 { "crash-shell", no_argument
, NULL
, ARG_CRASH_SHELL
},
608 { "confirm-spawn", no_argument
, NULL
, ARG_CONFIRM_SPAWN
},
609 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
610 { "sysv-console", optional_argument
, NULL
, ARG_SYSV_CONSOLE
},
611 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
612 { "introspect", optional_argument
, NULL
, ARG_INTROSPECT
},
621 while ((c
= getopt_long(argc
, argv
, "hD", options
, NULL
)) >= 0)
626 if ((r
= log_set_max_level_from_string(optarg
)) < 0) {
627 log_error("Failed to parse log level %s.", optarg
);
635 if ((r
= log_set_target_from_string(optarg
)) < 0) {
636 log_error("Failed to parse log target %s.", optarg
);
645 if ((r
= log_show_color_from_string(optarg
)) < 0) {
646 log_error("Failed to parse log color setting %s.", optarg
);
650 log_show_color(true);
654 case ARG_LOG_LOCATION
:
657 if ((r
= log_show_location_from_string(optarg
)) < 0) {
658 log_error("Failed to parse log location setting %s.", optarg
);
662 log_show_location(true);
668 if ((r
= set_default_unit(optarg
)) < 0) {
669 log_error("Failed to set default unit %s: %s", optarg
, strerror(-r
));
676 arg_running_as
= MANAGER_SYSTEM
;
680 arg_running_as
= MANAGER_SESSION
;
684 arg_action
= ACTION_TEST
;
687 case ARG_DUMP_CONFIGURATION_ITEMS
:
688 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
692 arg_dump_core
= true;
695 case ARG_CRASH_SHELL
:
696 arg_crash_shell
= true;
699 case ARG_CONFIRM_SPAWN
:
700 arg_confirm_spawn
= true;
703 case ARG_SHOW_STATUS
:
706 if ((r
= parse_boolean(optarg
)) < 0) {
707 log_error("Failed to show status boolean %s.", optarg
);
712 arg_show_status
= true;
715 case ARG_SYSV_CONSOLE
:
718 if ((r
= parse_boolean(optarg
)) < 0) {
719 log_error("Failed to SysV console boolean %s.", optarg
);
722 arg_sysv_console
= r
;
724 arg_sysv_console
= true;
727 case ARG_DESERIALIZE
: {
731 if ((r
= safe_atoi(optarg
, &fd
)) < 0 || fd
< 0) {
732 log_error("Failed to parse deserialize option %s.", optarg
);
736 if (!(f
= fdopen(fd
, "r"))) {
737 log_error("Failed to open serialization fd: %m");
742 fclose(serialization
);
749 case ARG_INTROSPECT
: {
750 const char * const * i
= NULL
;
752 for (i
= bus_interface_table
; *i
; i
+= 2)
753 if (!optarg
|| streq(i
[0], optarg
)) {
754 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
757 fputs("</node>\n", stdout
);
764 log_error("Unknown interface %s.", optarg
);
766 arg_action
= ACTION_DONE
;
771 arg_action
= ACTION_HELP
;
775 log_set_max_level(LOG_DEBUG
);
782 log_error("Unknown option code %c", c
);
786 /* PID 1 will get the kernel arguments as parameters, which we
787 * ignore and unconditionally read from
788 * /proc/cmdline. However, we need to ignore those arguments
790 if (arg_running_as
!= MANAGER_SYSTEM
&& optind
< argc
) {
791 log_error("Excess arguments.");
798 static int help(void) {
800 printf("%s [OPTIONS...]\n\n"
801 "Starts up and maintains the system or a session.\n\n"
802 " -h --help Show this help\n"
803 " --test Determine startup sequence, dump it and exit\n"
804 " --dump-configuration-items Dump understood unit configuration items\n"
805 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
806 " --unit=UNIT Set default unit\n"
807 " --system Run a system instance, even if PID != 1\n"
808 " --session Run a session instance\n"
809 " --dump-core Dump core on crash\n"
810 " --crash-shell Run shell on crash\n"
811 " --confirm-spawn Ask for confirmation when spawning processes\n"
812 " --show-status[=0|1] Show status updates on the console during bootup\n"
813 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
814 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
815 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
816 " --log-color[=0|1] Highlight important log messages\n"
817 " --log-location[=0|1] Include code location in log messages\n",
818 program_invocation_short_name
);
823 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
) {
832 if ((r
= manager_open_serialization(m
, &f
)) < 0) {
833 log_error("Failed to create serialization faile: %s", strerror(-r
));
837 if (!(fds
= fdset_new())) {
839 log_error("Failed to allocate fd set: %s", strerror(-r
));
843 if ((r
= manager_serialize(m
, f
, fds
)) < 0) {
844 log_error("Failed to serialize state: %s", strerror(-r
));
848 if (fseeko(f
, 0, SEEK_SET
) < 0) {
849 log_error("Failed to rewind serialization fd: %m");
853 if ((r
= fd_cloexec(fileno(f
), false)) < 0) {
854 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r
));
858 if ((r
= fdset_cloexec(fds
, false)) < 0) {
859 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r
));
877 int main(int argc
, char *argv
[]) {
881 bool reexecute
= false;
883 if (getpid() != 1 && strstr(program_invocation_short_name
, "init")) {
884 /* This is compatbility support for SysV, where
885 * calling init as a user is identical to telinit. */
888 execv(SYSTEMCTL_BINARY_PATH
, argv
);
889 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
893 log_show_color(isatty(STDERR_FILENO
) > 0);
894 log_show_location(false);
895 log_set_max_level(LOG_INFO
);
898 arg_running_as
= MANAGER_SYSTEM
;
899 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG
);
901 if (label_init() < 0)
904 arg_running_as
= MANAGER_SESSION
;
905 log_set_target(LOG_TARGET_CONSOLE
);
908 if (set_default_unit(SPECIAL_DEFAULT_TARGET
) < 0)
911 /* Mount /proc, /sys and friends, so that /proc/cmdline and
912 * /proc/$PID/fd is available. */
913 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
914 if (mount_setup() < 0)
917 /* Reset all signal handlers. */
918 assert_se(reset_all_signal_handlers() == 0);
920 /* If we are init, we can block sigkill. Yay. */
921 ignore_signals(SIGNALS_IGNORE
, -1);
923 if (parse_config_file() < 0)
926 if (arg_running_as
== MANAGER_SYSTEM
)
927 if (parse_proc_cmdline() < 0)
930 log_parse_environment();
932 if (parse_argv(argc
, argv
) < 0)
935 if (arg_action
== ACTION_HELP
) {
938 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
939 unit_dump_config_items(stdout
);
942 } else if (arg_action
== ACTION_DONE
) {
947 assert_se(arg_action
== ACTION_RUN
|| arg_action
== ACTION_TEST
);
949 /* Remember open file descriptors for later deserialization */
951 if ((r
= fdset_new_fill(&fds
)) < 0) {
952 log_error("Failed to allocate fd set: %s", strerror(-r
));
956 assert_se(fdset_remove(fds
, fileno(serialization
)) >= 0);
958 close_all_fds(NULL
, 0);
960 /* Set up PATH unless it is already set */
962 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
963 arg_running_as
== MANAGER_SYSTEM
);
965 /* Move out of the way, so that we won't block unmounts */
966 assert_se(chdir("/") == 0);
968 if (arg_running_as
== MANAGER_SYSTEM
) {
969 /* Become a session leader if we aren't one yet. */
972 /* Disable the umask logic */
976 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
977 dbus_connection_set_change_sigpipe(FALSE
);
979 /* Reset the console, but only if this is really init and we
980 * are freshly booted */
981 if (arg_running_as
== MANAGER_SYSTEM
&& arg_action
== ACTION_RUN
) {
982 console_setup(getpid() == 1 && !serialization
);
986 /* Open the logging devices, if possible and necessary */
989 /* Make sure we leave a core dump without panicing the
992 install_crash_handler();
994 log_full(arg_running_as
== MANAGER_SYSTEM
? LOG_INFO
: LOG_DEBUG
,
995 PACKAGE_STRING
" running in %s mode. (" SYSTEMD_FEATURES
")", manager_running_as_to_string(arg_running_as
));
997 if (arg_running_as
== MANAGER_SYSTEM
&& !serialization
) {
1006 if ((r
= manager_new(arg_running_as
, &m
)) < 0) {
1007 log_error("Failed to allocate manager object: %s", strerror(-r
));
1011 m
->confirm_spawn
= arg_confirm_spawn
;
1012 m
->show_status
= arg_show_status
;
1013 m
->sysv_console
= arg_sysv_console
;
1014 m
->mount_auto
= arg_mount_auto
;
1015 m
->swap_auto
= arg_swap_auto
;
1018 manager_set_console(m
, arg_console
);
1020 if ((r
= manager_startup(m
, serialization
, fds
)) < 0)
1021 log_error("Failed to fully start up daemon: %s", strerror(-r
));
1024 /* This will close all file descriptors that were opened, but
1025 * not claimed by any unit. */
1031 if (serialization
) {
1032 fclose(serialization
);
1033 serialization
= NULL
;
1036 Unit
*target
= NULL
;
1038 dbus_error_init(&error
);
1040 log_debug("Activating default unit: %s", arg_default_unit
);
1042 if ((r
= manager_load_unit(m
, arg_default_unit
, NULL
, &error
, &target
)) < 0) {
1043 log_error("Failed to load default target: %s", bus_error(&error
, r
));
1044 dbus_error_free(&error
);
1045 } else if (target
->meta
.load_state
!= UNIT_LOADED
)
1046 log_error("Failed to load default target: %s", strerror(-target
->meta
.load_error
));
1048 if (!target
|| target
->meta
.load_state
!= UNIT_LOADED
) {
1049 log_info("Trying to load rescue target...");
1051 if ((r
= manager_load_unit(m
, SPECIAL_RESCUE_TARGET
, NULL
, &error
, &target
)) < 0) {
1052 log_error("Failed to load rescue target: %s", bus_error(&error
, r
));
1053 dbus_error_free(&error
);
1055 } else if (target
->meta
.load_state
!= UNIT_LOADED
) {
1056 log_error("Failed to load rescue target: %s", strerror(-target
->meta
.load_error
));
1061 if (arg_action
== ACTION_TEST
) {
1062 printf("-> By units:\n");
1063 manager_dump_units(m
, stdout
, "\t");
1066 if ((r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, false, &error
, NULL
)) < 0) {
1067 log_error("Failed to start default target: %s", bus_error(&error
, r
));
1068 dbus_error_free(&error
);
1072 if (arg_action
== ACTION_TEST
) {
1073 printf("-> By jobs:\n");
1074 manager_dump_jobs(m
, stdout
, "\t");
1081 if ((r
= manager_loop(m
)) < 0) {
1082 log_error("Failed to run mainloop: %s", strerror(-r
));
1086 switch (m
->exit_code
) {
1093 case MANAGER_RELOAD
:
1094 log_info("Reloading.");
1095 if ((r
= manager_reload(m
)) < 0)
1096 log_error("Failed to reload: %s", strerror(-r
));
1099 case MANAGER_REEXECUTE
:
1100 if (prepare_reexecute(m
, &serialization
, &fds
) < 0)
1104 log_notice("Reexecuting.");
1108 assert_not_reached("Unknown exit code.");
1116 free(arg_default_unit
);
1124 const char *args
[15];
1128 assert(serialization
);
1131 args
[i
++] = SYSTEMD_BINARY_PATH
;
1133 args
[i
++] = "--log-level";
1134 args
[i
++] = log_level_to_string(log_get_max_level());
1136 args
[i
++] = "--log-target";
1137 args
[i
++] = log_target_to_string(log_get_target());
1139 if (arg_running_as
== MANAGER_SYSTEM
)
1140 args
[i
++] = "--system";
1142 args
[i
++] = "--session";
1145 args
[i
++] = "--dump-core";
1147 if (arg_crash_shell
)
1148 args
[i
++] = "--crash-shell";
1150 if (arg_confirm_spawn
)
1151 args
[i
++] = "--confirm-spawn";
1153 if (arg_show_status
)
1154 args
[i
++] = "--show-status=1";
1156 args
[i
++] = "--show-status=0";
1158 if (arg_sysv_console
)
1159 args
[i
++] = "--sysv-console=1";
1161 args
[i
++] = "--sysv-console=0";
1163 snprintf(sfd
, sizeof(sfd
), "%i", fileno(serialization
));
1166 args
[i
++] = "--deserialize";
1171 assert(i
<= ELEMENTSOF(args
));
1173 execv(args
[0], (char* const*) args
);
1175 log_error("Failed to reexecute: %m");
1179 fclose(serialization
);