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>
34 #include <sys/prctl.h>
38 #include "mount-setup.h"
39 #include "hostname-setup.h"
40 #include "loopback-setup.h"
41 #include "kmod-setup.h"
42 #include "locale-setup.h"
43 #include "selinux-setup.h"
44 #include "load-fragment.h"
47 #include "conf-parser.h"
48 #include "bus-errors.h"
58 ACTION_DUMP_CONFIGURATION_ITEMS
,
60 } arg_action
= ACTION_RUN
;
62 static char *arg_default_unit
= NULL
;
63 static ManagerRunningAs arg_running_as
= _MANAGER_RUNNING_AS_INVALID
;
65 static bool arg_dump_core
= true;
66 static bool arg_crash_shell
= false;
67 static int arg_crash_chvt
= -1;
68 static bool arg_confirm_spawn
= false;
69 static bool arg_show_status
= true;
70 #ifdef HAVE_SYSV_COMPAT
71 static bool arg_sysv_console
= true;
73 static bool arg_mount_auto
= true;
74 static bool arg_swap_auto
= true;
75 static char **arg_default_controllers
= NULL
;
77 static FILE* serialization
= NULL
;
79 static void nop_handler(int sig
) {
82 _noreturn_
static void crash(int sig
) {
85 log_error("Caught <%s>, not dumping core.", signal_to_string(sig
));
90 /* We want to wait for the core process, hence let's enable SIGCHLD */
92 sa
.sa_handler
= nop_handler
;
93 sa
.sa_flags
= SA_NOCLDSTOP
|SA_RESTART
;
94 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
96 if ((pid
= fork()) < 0)
97 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig
), strerror(errno
));
102 /* Enable default signal handler for core dump */
104 sa
.sa_handler
= SIG_DFL
;
105 assert_se(sigaction(sig
, &sa
, NULL
) == 0);
107 /* Don't limit the core dump size */
109 rl
.rlim_cur
= RLIM_INFINITY
;
110 rl
.rlim_max
= RLIM_INFINITY
;
111 setrlimit(RLIMIT_CORE
, &rl
);
113 /* Just to be sure... */
114 assert_se(chdir("/") == 0);
116 /* Raise the signal again */
119 assert_not_reached("We shouldn't be here...");
126 /* Order things nicely. */
127 if ((r
= wait_for_terminate(pid
, &status
)) < 0)
128 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig
), strerror(-r
));
129 else if (status
.si_code
!= CLD_DUMPED
)
130 log_error("Caught <%s>, core dump failed.", signal_to_string(sig
));
132 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig
), (unsigned long) pid
);
137 chvt(arg_crash_chvt
);
139 if (arg_crash_shell
) {
143 log_info("Executing crash shell in 10s...");
146 /* Let the kernel reap children for us */
148 sa
.sa_handler
= SIG_IGN
;
149 sa
.sa_flags
= SA_NOCLDSTOP
|SA_NOCLDWAIT
|SA_RESTART
;
150 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
152 if ((pid
= fork()) < 0)
153 log_error("Failed to fork off crash shell: %s", strerror(errno
));
157 if ((fd
= acquire_terminal("/dev/console", false, true, true)) < 0)
158 log_error("Failed to acquire terminal: %s", strerror(-fd
));
159 else if ((r
= make_stdio(fd
)) < 0)
160 log_error("Failed to duplicate terminal fd: %s", strerror(-r
));
162 execl("/bin/sh", "/bin/sh", NULL
);
164 log_error("execl() failed: %s", strerror(errno
));
168 log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid
);
171 log_info("Freezing execution.");
175 static void install_crash_handler(void) {
180 sa
.sa_handler
= crash
;
181 sa
.sa_flags
= SA_NODEFER
;
183 sigaction_many(&sa
, SIGNALS_CRASH_HANDLER
, -1);
186 static int console_setup(bool do_reset
) {
189 /* If we are init, we connect stdin/stdout/stderr to /dev/null
190 * and make sure we don't have a controlling tty. */
197 if ((tty_fd
= open_terminal("/dev/console", O_WRONLY
|O_NOCTTY
|O_CLOEXEC
)) < 0) {
198 log_error("Failed to open /dev/console: %s", strerror(-tty_fd
));
202 if ((r
= reset_terminal(tty_fd
)) < 0)
203 log_error("Failed to reset /dev/console: %s", strerror(-r
));
205 close_nointr_nofail(tty_fd
);
209 static int set_default_unit(const char *u
) {
214 if (!(c
= strdup(u
)))
217 free(arg_default_unit
);
218 arg_default_unit
= c
;
222 static int parse_proc_cmdline_word(const char *word
) {
224 static const char * const rlmap
[] = {
225 "emergency", SPECIAL_EMERGENCY_TARGET
,
226 "single", SPECIAL_RESCUE_TARGET
,
227 "-s", SPECIAL_RESCUE_TARGET
,
228 "s", SPECIAL_RESCUE_TARGET
,
229 "S", SPECIAL_RESCUE_TARGET
,
230 "1", SPECIAL_RESCUE_TARGET
,
231 "2", SPECIAL_RUNLEVEL2_TARGET
,
232 "3", SPECIAL_RUNLEVEL3_TARGET
,
233 "4", SPECIAL_RUNLEVEL4_TARGET
,
234 "5", SPECIAL_RUNLEVEL5_TARGET
,
239 if (startswith(word
, "systemd.unit="))
240 return set_default_unit(word
+ 13);
242 else if (startswith(word
, "systemd.log_target=")) {
244 if (log_set_target_from_string(word
+ 19) < 0)
245 log_warning("Failed to parse log target %s. Ignoring.", word
+ 19);
247 } else if (startswith(word
, "systemd.log_level=")) {
249 if (log_set_max_level_from_string(word
+ 18) < 0)
250 log_warning("Failed to parse log level %s. Ignoring.", word
+ 18);
252 } else if (startswith(word
, "systemd.log_color=")) {
254 if (log_show_color_from_string(word
+ 18) < 0)
255 log_warning("Failed to parse log color setting %s. Ignoring.", word
+ 18);
257 } else if (startswith(word
, "systemd.log_location=")) {
259 if (log_show_location_from_string(word
+ 21) < 0)
260 log_warning("Failed to parse log location setting %s. Ignoring.", word
+ 21);
262 } else if (startswith(word
, "systemd.dump_core=")) {
265 if ((r
= parse_boolean(word
+ 18)) < 0)
266 log_warning("Failed to parse dump core switch %s, Ignoring.", word
+ 18);
270 } else if (startswith(word
, "systemd.crash_shell=")) {
273 if ((r
= parse_boolean(word
+ 20)) < 0)
274 log_warning("Failed to parse crash shell switch %s, Ignoring.", word
+ 20);
278 } else if (startswith(word
, "systemd.confirm_spawn=")) {
281 if ((r
= parse_boolean(word
+ 22)) < 0)
282 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word
+ 22);
284 arg_confirm_spawn
= r
;
286 } else if (startswith(word
, "systemd.crash_chvt=")) {
289 if (safe_atoi(word
+ 19, &k
) < 0)
290 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word
+ 19);
294 } else if (startswith(word
, "systemd.show_status=")) {
297 if ((r
= parse_boolean(word
+ 20)) < 0)
298 log_warning("Failed to parse show status switch %s, Ignoring.", word
+ 20);
301 #ifdef HAVE_SYSV_COMPAT
302 } else if (startswith(word
, "systemd.sysv_console=")) {
305 if ((r
= parse_boolean(word
+ 21)) < 0)
306 log_warning("Failed to parse SysV console switch %s, Ignoring.", word
+ 20);
308 arg_sysv_console
= r
;
311 } else if (startswith(word
, "systemd.")) {
313 log_warning("Unknown kernel switch %s. Ignoring.", word
);
315 log_info("Supported kernel switches:\n"
316 "systemd.unit=UNIT Default unit to start\n"
317 "systemd.dump_core=0|1 Dump core on crash\n"
318 "systemd.crash_shell=0|1 Run shell on crash\n"
319 "systemd.crash_chvt=N Change to VT #N on crash\n"
320 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
321 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
322 #ifdef HAVE_SYSV_COMPAT
323 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
325 "systemd.log_target=console|kmsg|syslog|syslog-or-kmsg|null\n"
327 "systemd.log_level=LEVEL Log level\n"
328 "systemd.log_color=0|1 Highlight important log messages\n"
329 "systemd.log_location=0|1 Include code location in log messages\n");
331 } else if (streq(word
, "quiet")) {
332 arg_show_status
= false;
333 #ifdef HAVE_SYSV_COMPAT
334 arg_sysv_console
= false;
339 /* SysV compatibility */
340 for (i
= 0; i
< ELEMENTSOF(rlmap
); i
+= 2)
341 if (streq(word
, rlmap
[i
]))
342 return set_default_unit(rlmap
[i
+1]);
348 static int config_parse_level(
349 const char *filename
,
361 log_set_max_level_from_string(rvalue
);
365 static int config_parse_target(
366 const char *filename
,
378 log_set_target_from_string(rvalue
);
382 static int config_parse_color(
383 const char *filename
,
395 log_show_color_from_string(rvalue
);
399 static int config_parse_location(
400 const char *filename
,
412 log_show_location_from_string(rvalue
);
416 static int config_parse_cpu_affinity(
417 const char *filename
,
435 FOREACH_WORD_QUOTED(w
, l
, rvalue
, state
) {
440 if (!(t
= strndup(w
, l
)))
443 r
= safe_atou(t
, &cpu
);
447 if (!(c
= cpu_set_malloc(&ncpus
)))
450 if (r
< 0 || cpu
>= ncpus
) {
451 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename
, line
, rvalue
);
456 CPU_SET_S(cpu
, CPU_ALLOC_SIZE(ncpus
), c
);
460 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus
), c
) < 0)
461 log_warning("Failed to set CPU affinity: %m");
469 static int parse_config_file(void) {
471 const ConfigItem items
[] = {
472 { "LogLevel", config_parse_level
, NULL
, "Manager" },
473 { "LogTarget", config_parse_target
, NULL
, "Manager" },
474 { "LogColor", config_parse_color
, NULL
, "Manager" },
475 { "LogLocation", config_parse_location
, NULL
, "Manager" },
476 { "DumpCore", config_parse_bool
, &arg_dump_core
, "Manager" },
477 { "CrashShell", config_parse_bool
, &arg_crash_shell
, "Manager" },
478 { "ShowStatus", config_parse_bool
, &arg_show_status
, "Manager" },
479 #ifdef HAVE_SYSV_COMPAT
480 { "SysVConsole", config_parse_bool
, &arg_sysv_console
, "Manager" },
482 { "CrashChVT", config_parse_int
, &arg_crash_chvt
, "Manager" },
483 { "CPUAffinity", config_parse_cpu_affinity
, NULL
, "Manager" },
484 { "MountAuto", config_parse_bool
, &arg_mount_auto
, "Manager" },
485 { "SwapAuto", config_parse_bool
, &arg_swap_auto
, "Manager" },
486 { "DefaultControllers", config_parse_strv
, &arg_default_controllers
, "Manager" },
487 { NULL
, NULL
, NULL
, NULL
}
490 static const char * const sections
[] = {
499 fn
= arg_running_as
== MANAGER_SYSTEM
? SYSTEM_CONFIG_FILE
: USER_CONFIG_FILE
;
501 if (!(f
= fopen(fn
, "re"))) {
505 log_warning("Failed to open configuration file '%s': %m", fn
);
509 if ((r
= config_parse(fn
, f
, sections
, items
, false, NULL
)) < 0)
510 log_warning("Failed to parse configuration file: %s", strerror(-r
));
517 static int parse_proc_cmdline(void) {
518 char *line
, *w
, *state
;
522 if ((r
= read_one_line_file("/proc/cmdline", &line
)) < 0) {
523 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r
));
527 FOREACH_WORD_QUOTED(w
, l
, line
, state
) {
530 if (!(word
= strndup(w
, l
))) {
535 r
= parse_proc_cmdline_word(word
);
549 static int parse_argv(int argc
, char *argv
[]) {
552 ARG_LOG_LEVEL
= 0x100,
560 ARG_DUMP_CONFIGURATION_ITEMS
,
570 static const struct option options
[] = {
571 { "log-level", required_argument
, NULL
, ARG_LOG_LEVEL
},
572 { "log-target", required_argument
, NULL
, ARG_LOG_TARGET
},
573 { "log-color", optional_argument
, NULL
, ARG_LOG_COLOR
},
574 { "log-location", optional_argument
, NULL
, ARG_LOG_LOCATION
},
575 { "unit", required_argument
, NULL
, ARG_UNIT
},
576 { "system", no_argument
, NULL
, ARG_SYSTEM
},
577 { "user", no_argument
, NULL
, ARG_USER
},
578 { "test", no_argument
, NULL
, ARG_TEST
},
579 { "help", no_argument
, NULL
, 'h' },
580 { "dump-configuration-items", no_argument
, NULL
, ARG_DUMP_CONFIGURATION_ITEMS
},
581 { "dump-core", no_argument
, NULL
, ARG_DUMP_CORE
},
582 { "crash-shell", no_argument
, NULL
, ARG_CRASH_SHELL
},
583 { "confirm-spawn", no_argument
, NULL
, ARG_CONFIRM_SPAWN
},
584 { "show-status", optional_argument
, NULL
, ARG_SHOW_STATUS
},
585 #ifdef HAVE_SYSV_COMPAT
586 { "sysv-console", optional_argument
, NULL
, ARG_SYSV_CONSOLE
},
588 { "deserialize", required_argument
, NULL
, ARG_DESERIALIZE
},
589 { "introspect", optional_argument
, NULL
, ARG_INTROSPECT
},
598 while ((c
= getopt_long(argc
, argv
, "hD", options
, NULL
)) >= 0)
603 if ((r
= log_set_max_level_from_string(optarg
)) < 0) {
604 log_error("Failed to parse log level %s.", optarg
);
612 if ((r
= log_set_target_from_string(optarg
)) < 0) {
613 log_error("Failed to parse log target %s.", optarg
);
622 if ((r
= log_show_color_from_string(optarg
)) < 0) {
623 log_error("Failed to parse log color setting %s.", optarg
);
627 log_show_color(true);
631 case ARG_LOG_LOCATION
:
634 if ((r
= log_show_location_from_string(optarg
)) < 0) {
635 log_error("Failed to parse log location setting %s.", optarg
);
639 log_show_location(true);
645 if ((r
= set_default_unit(optarg
)) < 0) {
646 log_error("Failed to set default unit %s: %s", optarg
, strerror(-r
));
653 arg_running_as
= MANAGER_SYSTEM
;
657 arg_running_as
= MANAGER_USER
;
661 arg_action
= ACTION_TEST
;
664 case ARG_DUMP_CONFIGURATION_ITEMS
:
665 arg_action
= ACTION_DUMP_CONFIGURATION_ITEMS
;
669 arg_dump_core
= true;
672 case ARG_CRASH_SHELL
:
673 arg_crash_shell
= true;
676 case ARG_CONFIRM_SPAWN
:
677 arg_confirm_spawn
= true;
680 case ARG_SHOW_STATUS
:
683 if ((r
= parse_boolean(optarg
)) < 0) {
684 log_error("Failed to show status boolean %s.", optarg
);
689 arg_show_status
= true;
691 #ifdef HAVE_SYSV_COMPAT
692 case ARG_SYSV_CONSOLE
:
695 if ((r
= parse_boolean(optarg
)) < 0) {
696 log_error("Failed to SysV console boolean %s.", optarg
);
699 arg_sysv_console
= r
;
701 arg_sysv_console
= true;
705 case ARG_DESERIALIZE
: {
709 if ((r
= safe_atoi(optarg
, &fd
)) < 0 || fd
< 0) {
710 log_error("Failed to parse deserialize option %s.", optarg
);
714 if (!(f
= fdopen(fd
, "r"))) {
715 log_error("Failed to open serialization fd: %m");
720 fclose(serialization
);
727 case ARG_INTROSPECT
: {
728 const char * const * i
= NULL
;
730 for (i
= bus_interface_table
; *i
; i
+= 2)
731 if (!optarg
|| streq(i
[0], optarg
)) {
732 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
735 fputs("</node>\n", stdout
);
742 log_error("Unknown interface %s.", optarg
);
744 arg_action
= ACTION_DONE
;
749 arg_action
= ACTION_HELP
;
753 log_set_max_level(LOG_DEBUG
);
760 log_error("Unknown option code %c", c
);
764 /* PID 1 will get the kernel arguments as parameters, which we
765 * ignore and unconditionally read from
766 * /proc/cmdline. However, we need to ignore those arguments
768 if (arg_running_as
!= MANAGER_SYSTEM
&& optind
< argc
) {
769 log_error("Excess arguments.");
776 static int help(void) {
778 printf("%s [OPTIONS...]\n\n"
779 "Starts up and maintains the system or user services.\n\n"
780 " -h --help Show this help\n"
781 " --test Determine startup sequence, dump it and exit\n"
782 " --dump-configuration-items Dump understood unit configuration items\n"
783 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
784 " --unit=UNIT Set default unit\n"
785 " --system Run a system instance, even if PID != 1\n"
786 " --user Run a user instance\n"
787 " --dump-core Dump core on crash\n"
788 " --crash-shell Run shell on crash\n"
789 " --confirm-spawn Ask for confirmation when spawning processes\n"
790 " --show-status[=0|1] Show status updates on the console during bootup\n"
791 #ifdef HAVE_SYSV_COMPAT
792 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
794 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
795 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
796 " --log-color[=0|1] Highlight important log messages\n"
797 " --log-location[=0|1] Include code location in log messages\n",
798 program_invocation_short_name
);
803 static int prepare_reexecute(Manager
*m
, FILE **_f
, FDSet
**_fds
) {
812 if ((r
= manager_open_serialization(m
, &f
)) < 0) {
813 log_error("Failed to create serialization faile: %s", strerror(-r
));
817 if (!(fds
= fdset_new())) {
819 log_error("Failed to allocate fd set: %s", strerror(-r
));
823 if ((r
= manager_serialize(m
, f
, fds
)) < 0) {
824 log_error("Failed to serialize state: %s", strerror(-r
));
828 if (fseeko(f
, 0, SEEK_SET
) < 0) {
829 log_error("Failed to rewind serialization fd: %m");
833 if ((r
= fd_cloexec(fileno(f
), false)) < 0) {
834 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r
));
838 if ((r
= fdset_cloexec(fds
, false)) < 0) {
839 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r
));
857 static struct dual_timestamp
* parse_initrd_timestamp(struct dual_timestamp
*t
) {
859 unsigned long long a
, b
;
863 if (!(e
= getenv("RD_TIMESTAMP")))
866 if (sscanf(e
, "%llu %llu", &a
, &b
) != 2)
869 t
->realtime
= (usec_t
) a
;
870 t
->monotonic
= (usec_t
) b
;
875 static void test_mtab(void) {
878 if (readlink_malloc("/etc/mtab", &p
) >= 0) {
881 b
= streq(p
, "/proc/self/mounts") || streq(p
, "/proc/mounts");
888 log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
889 "This is not supported anymore. "
890 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
893 int main(int argc
, char *argv
[]) {
895 int r
, retval
= EXIT_FAILURE
;
897 bool reexecute
= false;
898 const char *shutdown_verb
= NULL
;
899 dual_timestamp initrd_timestamp
= { 0ULL, 0ULL };
900 char systemd
[] = "systemd";
902 if (getpid() != 1 && strstr(program_invocation_short_name
, "init")) {
903 /* This is compatbility support for SysV, where
904 * calling init as a user is identical to telinit. */
907 execv(SYSTEMCTL_BINARY_PATH
, argv
);
908 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH
": %m");
912 /* If we get started via the /sbin/init symlink then we are
913 called 'init'. After a subsequent reexecution we are then
914 called 'systemd'. That is confusing, hence let's call us
915 systemd right-away. */
917 program_invocation_short_name
= systemd
;
918 prctl(PR_SET_NAME
, systemd
);
920 log_show_color(isatty(STDERR_FILENO
) > 0);
921 log_show_location(false);
922 log_set_max_level(LOG_INFO
);
925 arg_running_as
= MANAGER_SYSTEM
;
926 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG
);
928 /* This might actually not return, but cause a
930 if (selinux_setup(argv
) < 0)
933 if (label_init() < 0)
936 arg_running_as
= MANAGER_USER
;
937 log_set_target(LOG_TARGET_CONSOLE
);
940 if (set_default_unit(SPECIAL_DEFAULT_TARGET
) < 0)
943 /* Mount /proc, /sys and friends, so that /proc/cmdline and
944 * /proc/$PID/fd is available. */
945 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
946 if (mount_setup() < 0)
949 /* Reset all signal handlers. */
950 assert_se(reset_all_signal_handlers() == 0);
952 /* If we are init, we can block sigkill. Yay. */
953 ignore_signals(SIGNALS_IGNORE
, -1);
955 if (parse_config_file() < 0)
958 if (arg_running_as
== MANAGER_SYSTEM
)
959 if (parse_proc_cmdline() < 0)
962 log_parse_environment();
964 if (parse_argv(argc
, argv
) < 0)
967 /* If Plymouth is being run make sure we show the status, so
968 * that there's something nice to see when people press Esc */
969 if (access("/dev/.systemd/plymouth", F_OK
) >= 0)
970 arg_show_status
= true;
972 if (arg_action
== ACTION_HELP
) {
975 } else if (arg_action
== ACTION_DUMP_CONFIGURATION_ITEMS
) {
976 unit_dump_config_items(stdout
);
977 retval
= EXIT_SUCCESS
;
979 } else if (arg_action
== ACTION_DONE
) {
980 retval
= EXIT_SUCCESS
;
984 assert_se(arg_action
== ACTION_RUN
|| arg_action
== ACTION_TEST
);
986 /* Remember open file descriptors for later deserialization */
988 if ((r
= fdset_new_fill(&fds
)) < 0) {
989 log_error("Failed to allocate fd set: %s", strerror(-r
));
993 assert_se(fdset_remove(fds
, fileno(serialization
)) >= 0);
995 close_all_fds(NULL
, 0);
997 /* Set up PATH unless it is already set */
999 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
1000 arg_running_as
== MANAGER_SYSTEM
);
1002 if (arg_running_as
== MANAGER_SYSTEM
) {
1003 /* Parse the data passed to us by the initrd and unset it */
1004 parse_initrd_timestamp(&initrd_timestamp
);
1005 filter_environ("RD_");
1007 /* Unset some environment variables passed in from the
1008 * kernel that don't really make sense for us. */
1013 /* Move out of the way, so that we won't block unmounts */
1014 assert_se(chdir("/") == 0);
1016 if (arg_running_as
== MANAGER_SYSTEM
) {
1017 /* Become a session leader if we aren't one yet. */
1020 /* Disable the umask logic */
1024 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
1025 dbus_connection_set_change_sigpipe(FALSE
);
1027 /* Reset the console, but only if this is really init and we
1028 * are freshly booted */
1029 if (arg_running_as
== MANAGER_SYSTEM
&& arg_action
== ACTION_RUN
) {
1030 console_setup(getpid() == 1 && !serialization
);
1034 /* Open the logging devices, if possible and necessary */
1037 /* Make sure we leave a core dump without panicing the
1040 install_crash_handler();
1042 log_full(arg_running_as
== MANAGER_SYSTEM
? LOG_INFO
: LOG_DEBUG
,
1043 PACKAGE_STRING
" running in %s mode. (" SYSTEMD_FEATURES
"; " DISTRIBUTION
")", manager_running_as_to_string(arg_running_as
));
1045 if (arg_running_as
== MANAGER_SYSTEM
&& !serialization
) {
1048 if (arg_show_status
)
1055 mkdir_p("/dev/.systemd/ask-password/", 0755);
1060 if ((r
= manager_new(arg_running_as
, &m
)) < 0) {
1061 log_error("Failed to allocate manager object: %s", strerror(-r
));
1065 m
->confirm_spawn
= arg_confirm_spawn
;
1066 m
->show_status
= arg_show_status
;
1067 #ifdef HAVE_SYSV_COMPAT
1068 m
->sysv_console
= arg_sysv_console
;
1070 m
->mount_auto
= arg_mount_auto
;
1071 m
->swap_auto
= arg_swap_auto
;
1073 if (dual_timestamp_is_set(&initrd_timestamp
))
1074 m
->initrd_timestamp
= initrd_timestamp
;
1076 if (arg_default_controllers
)
1077 manager_set_default_controllers(m
, arg_default_controllers
);
1079 if ((r
= manager_startup(m
, serialization
, fds
)) < 0)
1080 log_error("Failed to fully start up daemon: %s", strerror(-r
));
1083 /* This will close all file descriptors that were opened, but
1084 * not claimed by any unit. */
1090 if (serialization
) {
1091 fclose(serialization
);
1092 serialization
= NULL
;
1095 Unit
*target
= NULL
;
1097 dbus_error_init(&error
);
1099 log_debug("Activating default unit: %s", arg_default_unit
);
1101 if ((r
= manager_load_unit(m
, arg_default_unit
, NULL
, &error
, &target
)) < 0) {
1102 log_error("Failed to load default target: %s", bus_error(&error
, r
));
1103 dbus_error_free(&error
);
1104 } else if (target
->meta
.load_state
== UNIT_ERROR
)
1105 log_error("Failed to load default target: %s", strerror(-target
->meta
.load_error
));
1106 else if (target
->meta
.load_state
== UNIT_MASKED
)
1107 log_error("Default target masked.");
1109 if (!target
|| target
->meta
.load_state
!= UNIT_LOADED
) {
1110 log_info("Trying to load rescue target...");
1112 if ((r
= manager_load_unit(m
, SPECIAL_RESCUE_TARGET
, NULL
, &error
, &target
)) < 0) {
1113 log_error("Failed to load rescue target: %s", bus_error(&error
, r
));
1114 dbus_error_free(&error
);
1116 } else if (target
->meta
.load_state
== UNIT_ERROR
) {
1117 log_error("Failed to load rescue target: %s", strerror(-target
->meta
.load_error
));
1119 } else if (target
->meta
.load_state
== UNIT_MASKED
) {
1120 log_error("Rescue target masked.");
1125 assert(target
->meta
.load_state
== UNIT_LOADED
);
1127 if (arg_action
== ACTION_TEST
) {
1128 printf("-> By units:\n");
1129 manager_dump_units(m
, stdout
, "\t");
1132 if ((r
= manager_add_job(m
, JOB_START
, target
, JOB_REPLACE
, false, &error
, NULL
)) < 0) {
1133 log_error("Failed to start default target: %s", bus_error(&error
, r
));
1134 dbus_error_free(&error
);
1138 if (arg_action
== ACTION_TEST
) {
1139 printf("-> By jobs:\n");
1140 manager_dump_jobs(m
, stdout
, "\t");
1141 retval
= EXIT_SUCCESS
;
1147 if ((r
= manager_loop(m
)) < 0) {
1148 log_error("Failed to run mainloop: %s", strerror(-r
));
1152 switch (m
->exit_code
) {
1155 retval
= EXIT_SUCCESS
;
1159 case MANAGER_RELOAD
:
1160 log_info("Reloading.");
1161 if ((r
= manager_reload(m
)) < 0)
1162 log_error("Failed to reload: %s", strerror(-r
));
1165 case MANAGER_REEXECUTE
:
1166 if (prepare_reexecute(m
, &serialization
, &fds
) < 0)
1170 log_notice("Reexecuting.");
1173 case MANAGER_REBOOT
:
1174 case MANAGER_POWEROFF
:
1176 case MANAGER_KEXEC
: {
1177 static const char * const table
[_MANAGER_EXIT_CODE_MAX
] = {
1178 [MANAGER_REBOOT
] = "reboot",
1179 [MANAGER_POWEROFF
] = "poweroff",
1180 [MANAGER_HALT
] = "halt",
1181 [MANAGER_KEXEC
] = "kexec"
1184 assert_se(shutdown_verb
= table
[m
->exit_code
]);
1186 log_notice("Shutting down.");
1191 assert_not_reached("Unknown exit code.");
1199 free(arg_default_unit
);
1200 strv_free(arg_default_controllers
);
1207 const char *args
[15];
1211 assert(serialization
);
1214 args
[i
++] = SYSTEMD_BINARY_PATH
;
1216 args
[i
++] = "--log-level";
1217 args
[i
++] = log_level_to_string(log_get_max_level());
1219 args
[i
++] = "--log-target";
1220 args
[i
++] = log_target_to_string(log_get_target());
1222 if (arg_running_as
== MANAGER_SYSTEM
)
1223 args
[i
++] = "--system";
1225 args
[i
++] = "--user";
1228 args
[i
++] = "--dump-core";
1230 if (arg_crash_shell
)
1231 args
[i
++] = "--crash-shell";
1233 if (arg_confirm_spawn
)
1234 args
[i
++] = "--confirm-spawn";
1236 if (arg_show_status
)
1237 args
[i
++] = "--show-status=1";
1239 args
[i
++] = "--show-status=0";
1241 #ifdef HAVE_SYSV_COMPAT
1242 if (arg_sysv_console
)
1243 args
[i
++] = "--sysv-console=1";
1245 args
[i
++] = "--sysv-console=0";
1248 snprintf(sfd
, sizeof(sfd
), "%i", fileno(serialization
));
1251 args
[i
++] = "--deserialize";
1256 assert(i
<= ELEMENTSOF(args
));
1258 execv(args
[0], (char* const*) args
);
1260 log_error("Failed to reexecute: %m");
1264 fclose(serialization
);
1269 if (shutdown_verb
) {
1270 const char * command_line
[] = {
1271 SYSTEMD_SHUTDOWN_BINARY_PATH
,
1276 execv(SYSTEMD_SHUTDOWN_BINARY_PATH
, (char **) command_line
);
1277 log_error("Failed to execute shutdown binary, freezing: %m");