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 "locale-setup.h"
42 #include "load-fragment.h"
45 #include "conf-parser.h"
46 #include "bus-errors.h"
55 ACTION_DUMP_CONFIGURATION_ITEMS,
57 } arg_action = ACTION_RUN;
59 static char *arg_default_unit = NULL;
60 static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
62 static bool arg_dump_core = true;
63 static bool arg_crash_shell = false;
64 static int arg_crash_chvt = -1;
65 static bool arg_confirm_spawn = false;
66 static bool arg_show_status = true;
67 #ifdef HAVE_SYSV_COMPAT
68 static bool arg_sysv_console = true;
70 static bool arg_mount_auto = true;
71 static bool arg_swap_auto = true;
72 static char *arg_console = NULL;
74 static FILE* serialization = NULL;
76 static void nop_handler(int sig) {
79 _noreturn_ static void crash(int sig) {
82 log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
87 /* We want to wait for the core process, hence let's enable SIGCHLD */
89 sa.sa_handler = nop_handler;
90 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
91 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
93 if ((pid = fork()) < 0)
94 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
99 /* Enable default signal handler for core dump */
101 sa.sa_handler = SIG_DFL;
102 assert_se(sigaction(sig, &sa, NULL) == 0);
104 /* Don't limit the core dump size */
106 rl.rlim_cur = RLIM_INFINITY;
107 rl.rlim_max = RLIM_INFINITY;
108 setrlimit(RLIMIT_CORE, &rl);
110 /* Just to be sure... */
111 assert_se(chdir("/") == 0);
113 /* Raise the signal again */
116 assert_not_reached("We shouldn't be here...");
123 /* Order things nicely. */
124 if ((r = wait_for_terminate(pid, &status)) < 0)
125 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
126 else if (status.si_code != CLD_DUMPED)
127 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
129 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
134 chvt(arg_crash_chvt);
136 if (arg_crash_shell) {
140 log_info("Executing crash shell in 10s...");
143 /* Let the kernel reap children for us */
145 sa.sa_handler = SIG_IGN;
146 sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
147 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
149 if ((pid = fork()) < 0)
150 log_error("Failed to fork off crash shell: %s", strerror(errno));
154 if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
155 log_error("Failed to acquire terminal: %s", strerror(-fd));
156 else if ((r = make_stdio(fd)) < 0)
157 log_error("Failed to duplicate terminal fd: %s", strerror(-r));
159 execl("/bin/sh", "/bin/sh", NULL);
161 log_error("execl() failed: %s", strerror(errno));
165 log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid);
168 log_info("Freezing execution.");
172 static void install_crash_handler(void) {
177 sa.sa_handler = crash;
178 sa.sa_flags = SA_NODEFER;
180 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
183 static int make_null_stdio(void) {
186 if ((null_fd = open("/dev/null", O_RDWR|O_NOCTTY)) < 0) {
187 log_error("Failed to open /dev/null: %m");
191 if ((r = make_stdio(null_fd)) < 0)
192 log_warning("Failed to dup2() device: %s", strerror(-r));
197 static int console_setup(bool do_reset) {
200 /* If we are init, we connect stdin/stdout/stderr to /dev/null
201 * and make sure we don't have a controlling tty. */
208 if ((tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) {
209 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
213 if ((r = reset_terminal(tty_fd)) < 0)
214 log_error("Failed to reset /dev/console: %s", strerror(-r));
216 close_nointr_nofail(tty_fd);
220 static int set_default_unit(const char *u) {
225 if (!(c = strdup(u)))
228 free(arg_default_unit);
229 arg_default_unit = c;
233 static int parse_proc_cmdline_word(const char *word) {
235 static const char * const rlmap[] = {
236 "emergency", SPECIAL_EMERGENCY_TARGET,
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);
312 #ifdef HAVE_SYSV_COMPAT
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;
322 } else if (startswith(word, "systemd.")) {
324 log_warning("Unknown kernel switch %s. Ignoring.", word);
326 log_info("Supported kernel switches:\n"
327 "systemd.unit=UNIT Default unit to start\n"
328 "systemd.dump_core=0|1 Dump core on crash\n"
329 "systemd.crash_shell=0|1 Run shell on crash\n"
330 "systemd.crash_chvt=N Change to VT #N on crash\n"
331 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
332 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
333 #ifdef HAVE_SYSV_COMPAT
334 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
336 "systemd.log_target=console|kmsg|syslog|syslog-org-kmsg|null\n"
338 "systemd.log_level=LEVEL Log level\n"
339 "systemd.log_color=0|1 Highlight important log messages\n"
340 "systemd.log_location=0|1 Include code location in log messages\n");
342 } else if (startswith(word, "console=")) {
350 /* Ignore the console setting if set to a VT */
352 !startswith(k, "tty") ||
353 k[3+strspn(k+3, "0123456789")] != 0) {
355 if (!(w = strndup(k, l)))
362 } else if (streq(word, "quiet")) {
363 arg_show_status = false;
364 #ifdef HAVE_SYSV_COMPAT
365 arg_sysv_console = false;
370 /* SysV compatibility */
371 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
372 if (streq(word, rlmap[i]))
373 return set_default_unit(rlmap[i+1]);
379 static int config_parse_level(
380 const char *filename,
392 log_set_max_level_from_string(rvalue);
396 static int config_parse_target(
397 const char *filename,
409 log_set_target_from_string(rvalue);
413 static int config_parse_color(
414 const char *filename,
426 log_show_color_from_string(rvalue);
430 static int config_parse_location(
431 const char *filename,
443 log_show_location_from_string(rvalue);
447 static int config_parse_cpu_affinity(
448 const char *filename,
466 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
471 if (!(t = strndup(w, l)))
474 r = safe_atou(t, &cpu);
478 if (!(c = cpu_set_malloc(&ncpus)))
481 if (r < 0 || cpu >= ncpus) {
482 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
487 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
491 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
492 log_warning("Failed to set CPU affinity: %m");
500 static int parse_config_file(void) {
502 const ConfigItem items[] = {
503 { "LogLevel", config_parse_level, NULL, "Manager" },
504 { "LogTarget", config_parse_target, NULL, "Manager" },
505 { "LogColor", config_parse_color, NULL, "Manager" },
506 { "LogLocation", config_parse_location, NULL, "Manager" },
507 { "DumpCore", config_parse_bool, &arg_dump_core, "Manager" },
508 { "CrashShell", config_parse_bool, &arg_crash_shell, "Manager" },
509 { "ShowStatus", config_parse_bool, &arg_show_status, "Manager" },
510 #ifdef HAVE_SYSV_COMPAT
511 { "SysVConsole", config_parse_bool, &arg_sysv_console, "Manager" },
513 { "CrashChVT", config_parse_int, &arg_crash_chvt, "Manager" },
514 { "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" },
515 { "MountAuto", config_parse_bool, &arg_mount_auto, "Manager" },
516 { "SwapAuto", config_parse_bool, &arg_swap_auto, "Manager" },
517 { NULL, NULL, NULL, NULL }
520 static const char * const sections[] = {
529 fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : SESSION_CONFIG_FILE;
531 if (!(f = fopen(fn, "re"))) {
535 log_warning("Failed to open configuration file '%s': %m", fn);
539 if ((r = config_parse(fn, f, sections, items, false, NULL)) < 0)
540 log_warning("Failed to parse configuration file: %s", strerror(-r));
547 static int parse_proc_cmdline(void) {
548 char *line, *w, *state;
552 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
553 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
557 FOREACH_WORD_QUOTED(w, l, line, state) {
560 if (!(word = strndup(w, l))) {
565 r = parse_proc_cmdline_word(word);
579 static int parse_argv(int argc, char *argv[]) {
582 ARG_LOG_LEVEL = 0x100,
590 ARG_DUMP_CONFIGURATION_ITEMS,
600 static const struct option options[] = {
601 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
602 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
603 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
604 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
605 { "unit", required_argument, NULL, ARG_UNIT },
606 { "system", no_argument, NULL, ARG_SYSTEM },
607 { "session", no_argument, NULL, ARG_SESSION },
608 { "test", no_argument, NULL, ARG_TEST },
609 { "help", no_argument, NULL, 'h' },
610 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
611 { "dump-core", no_argument, NULL, ARG_DUMP_CORE },
612 { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL },
613 { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
614 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
615 #ifdef HAVE_SYSV_COMPAT
616 { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
618 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
619 { "introspect", optional_argument, NULL, ARG_INTROSPECT },
628 while ((c = getopt_long(argc, argv, "hD", options, NULL)) >= 0)
633 if ((r = log_set_max_level_from_string(optarg)) < 0) {
634 log_error("Failed to parse log level %s.", optarg);
642 if ((r = log_set_target_from_string(optarg)) < 0) {
643 log_error("Failed to parse log target %s.", optarg);
652 if ((r = log_show_color_from_string(optarg)) < 0) {
653 log_error("Failed to parse log color setting %s.", optarg);
657 log_show_color(true);
661 case ARG_LOG_LOCATION:
664 if ((r = log_show_location_from_string(optarg)) < 0) {
665 log_error("Failed to parse log location setting %s.", optarg);
669 log_show_location(true);
675 if ((r = set_default_unit(optarg)) < 0) {
676 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
683 arg_running_as = MANAGER_SYSTEM;
687 arg_running_as = MANAGER_SESSION;
691 arg_action = ACTION_TEST;
694 case ARG_DUMP_CONFIGURATION_ITEMS:
695 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
699 arg_dump_core = true;
702 case ARG_CRASH_SHELL:
703 arg_crash_shell = true;
706 case ARG_CONFIRM_SPAWN:
707 arg_confirm_spawn = true;
710 case ARG_SHOW_STATUS:
713 if ((r = parse_boolean(optarg)) < 0) {
714 log_error("Failed to show status boolean %s.", optarg);
719 arg_show_status = true;
721 #ifdef HAVE_SYSV_COMPAT
722 case ARG_SYSV_CONSOLE:
725 if ((r = parse_boolean(optarg)) < 0) {
726 log_error("Failed to SysV console boolean %s.", optarg);
729 arg_sysv_console = r;
731 arg_sysv_console = true;
735 case ARG_DESERIALIZE: {
739 if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
740 log_error("Failed to parse deserialize option %s.", optarg);
744 if (!(f = fdopen(fd, "r"))) {
745 log_error("Failed to open serialization fd: %m");
750 fclose(serialization);
757 case ARG_INTROSPECT: {
758 const char * const * i = NULL;
760 for (i = bus_interface_table; *i; i += 2)
761 if (!optarg || streq(i[0], optarg)) {
762 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
765 fputs("</node>\n", stdout);
772 log_error("Unknown interface %s.", optarg);
774 arg_action = ACTION_DONE;
779 arg_action = ACTION_HELP;
783 log_set_max_level(LOG_DEBUG);
790 log_error("Unknown option code %c", c);
794 /* PID 1 will get the kernel arguments as parameters, which we
795 * ignore and unconditionally read from
796 * /proc/cmdline. However, we need to ignore those arguments
798 if (arg_running_as != MANAGER_SYSTEM && optind < argc) {
799 log_error("Excess arguments.");
806 static int help(void) {
808 printf("%s [OPTIONS...]\n\n"
809 "Starts up and maintains the system or a session.\n\n"
810 " -h --help Show this help\n"
811 " --test Determine startup sequence, dump it and exit\n"
812 " --dump-configuration-items Dump understood unit configuration items\n"
813 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
814 " --unit=UNIT Set default unit\n"
815 " --system Run a system instance, even if PID != 1\n"
816 " --session Run a session instance\n"
817 " --dump-core Dump core on crash\n"
818 " --crash-shell Run shell on crash\n"
819 " --confirm-spawn Ask for confirmation when spawning processes\n"
820 " --show-status[=0|1] Show status updates on the console during bootup\n"
821 #ifdef HAVE_SYSV_COMPAT
822 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
824 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
825 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
826 " --log-color[=0|1] Highlight important log messages\n"
827 " --log-location[=0|1] Include code location in log messages\n",
828 program_invocation_short_name);
833 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
842 if ((r = manager_open_serialization(m, &f)) < 0) {
843 log_error("Failed to create serialization faile: %s", strerror(-r));
847 if (!(fds = fdset_new())) {
849 log_error("Failed to allocate fd set: %s", strerror(-r));
853 if ((r = manager_serialize(m, f, fds)) < 0) {
854 log_error("Failed to serialize state: %s", strerror(-r));
858 if (fseeko(f, 0, SEEK_SET) < 0) {
859 log_error("Failed to rewind serialization fd: %m");
863 if ((r = fd_cloexec(fileno(f), false)) < 0) {
864 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
868 if ((r = fdset_cloexec(fds, false)) < 0) {
869 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
887 int main(int argc, char *argv[]) {
889 int r, retval = EXIT_FAILURE;
891 bool reexecute = false;
892 const char *shutdown_verb = NULL;
894 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
895 /* This is compatbility support for SysV, where
896 * calling init as a user is identical to telinit. */
899 execv(SYSTEMCTL_BINARY_PATH, argv);
900 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
904 log_show_color(isatty(STDERR_FILENO) > 0);
905 log_show_location(false);
906 log_set_max_level(LOG_INFO);
909 arg_running_as = MANAGER_SYSTEM;
910 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
912 if (label_init() < 0)
915 arg_running_as = MANAGER_SESSION;
916 log_set_target(LOG_TARGET_CONSOLE);
919 if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
922 /* Mount /proc, /sys and friends, so that /proc/cmdline and
923 * /proc/$PID/fd is available. */
924 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
925 if (mount_setup() < 0)
928 /* Reset all signal handlers. */
929 assert_se(reset_all_signal_handlers() == 0);
931 /* If we are init, we can block sigkill. Yay. */
932 ignore_signals(SIGNALS_IGNORE, -1);
934 if (parse_config_file() < 0)
937 if (arg_running_as == MANAGER_SYSTEM)
938 if (parse_proc_cmdline() < 0)
941 log_parse_environment();
943 if (parse_argv(argc, argv) < 0)
946 if (arg_action == ACTION_HELP) {
949 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
950 unit_dump_config_items(stdout);
951 retval = EXIT_SUCCESS;
953 } else if (arg_action == ACTION_DONE) {
954 retval = EXIT_SUCCESS;
958 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
960 /* Remember open file descriptors for later deserialization */
962 if ((r = fdset_new_fill(&fds)) < 0) {
963 log_error("Failed to allocate fd set: %s", strerror(-r));
967 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
969 close_all_fds(NULL, 0);
971 /* Set up PATH unless it is already set */
973 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
974 arg_running_as == MANAGER_SYSTEM);
976 /* Move out of the way, so that we won't block unmounts */
977 assert_se(chdir("/") == 0);
979 if (arg_running_as == MANAGER_SYSTEM) {
980 /* Become a session leader if we aren't one yet. */
983 /* Disable the umask logic */
987 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
988 dbus_connection_set_change_sigpipe(FALSE);
990 /* Reset the console, but only if this is really init and we
991 * are freshly booted */
992 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
993 console_setup(getpid() == 1 && !serialization);
997 /* Open the logging devices, if possible and necessary */
1000 /* Make sure we leave a core dump without panicing the
1003 install_crash_handler();
1005 log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
1006 PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
1008 if (arg_running_as == MANAGER_SYSTEM && !serialization) {
1011 if (arg_show_status)
1018 mkdir_p("/dev/.systemd/ask-password/", 0755);
1021 if ((r = manager_new(arg_running_as, &m)) < 0) {
1022 log_error("Failed to allocate manager object: %s", strerror(-r));
1026 m->confirm_spawn = arg_confirm_spawn;
1027 m->show_status = arg_show_status;
1028 #ifdef HAVE_SYSV_COMPAT
1029 m->sysv_console = arg_sysv_console;
1031 m->mount_auto = arg_mount_auto;
1032 m->swap_auto = arg_swap_auto;
1035 manager_set_console(m, arg_console);
1037 if ((r = manager_startup(m, serialization, fds)) < 0)
1038 log_error("Failed to fully start up daemon: %s", strerror(-r));
1041 /* This will close all file descriptors that were opened, but
1042 * not claimed by any unit. */
1048 if (serialization) {
1049 fclose(serialization);
1050 serialization = NULL;
1053 Unit *target = NULL;
1055 dbus_error_init(&error);
1057 log_debug("Activating default unit: %s", arg_default_unit);
1059 if ((r = manager_load_unit(m, arg_default_unit, NULL, &error, &target)) < 0) {
1060 log_error("Failed to load default target: %s", bus_error(&error, r));
1061 dbus_error_free(&error);
1062 } else if (target->meta.load_state == UNIT_ERROR)
1063 log_error("Failed to load default target: %s", strerror(-target->meta.load_error));
1064 else if (target->meta.load_state == UNIT_MASKED)
1065 log_error("Default target masked.");
1067 if (!target || target->meta.load_state != UNIT_LOADED) {
1068 log_info("Trying to load rescue target...");
1070 if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target)) < 0) {
1071 log_error("Failed to load rescue target: %s", bus_error(&error, r));
1072 dbus_error_free(&error);
1074 } else if (target->meta.load_state == UNIT_ERROR) {
1075 log_error("Failed to load rescue target: %s", strerror(-target->meta.load_error));
1077 } else if (target->meta.load_state == UNIT_MASKED) {
1078 log_error("Rescue target masked.");
1083 assert(target->meta.load_state == UNIT_LOADED);
1085 if (arg_action == ACTION_TEST) {
1086 printf("-> By units:\n");
1087 manager_dump_units(m, stdout, "\t");
1090 if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, NULL)) < 0) {
1091 log_error("Failed to start default target: %s", bus_error(&error, r));
1092 dbus_error_free(&error);
1096 if (arg_action == ACTION_TEST) {
1097 printf("-> By jobs:\n");
1098 manager_dump_jobs(m, stdout, "\t");
1099 retval = EXIT_SUCCESS;
1105 if ((r = manager_loop(m)) < 0) {
1106 log_error("Failed to run mainloop: %s", strerror(-r));
1110 switch (m->exit_code) {
1113 retval = EXIT_SUCCESS;
1117 case MANAGER_RELOAD:
1118 log_info("Reloading.");
1119 if ((r = manager_reload(m)) < 0)
1120 log_error("Failed to reload: %s", strerror(-r));
1123 case MANAGER_REEXECUTE:
1124 if (prepare_reexecute(m, &serialization, &fds) < 0)
1128 log_notice("Reexecuting.");
1131 case MANAGER_REBOOT:
1132 case MANAGER_POWEROFF:
1134 case MANAGER_KEXEC: {
1135 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1136 [MANAGER_REBOOT] = "reboot",
1137 [MANAGER_POWEROFF] = "poweroff",
1138 [MANAGER_HALT] = "halt",
1139 [MANAGER_KEXEC] = "kexec"
1142 assert_se(shutdown_verb = table[m->exit_code]);
1144 log_notice("Shutting down.");
1149 assert_not_reached("Unknown exit code.");
1157 free(arg_default_unit);
1165 const char *args[15];
1169 assert(serialization);
1172 args[i++] = SYSTEMD_BINARY_PATH;
1174 args[i++] = "--log-level";
1175 args[i++] = log_level_to_string(log_get_max_level());
1177 args[i++] = "--log-target";
1178 args[i++] = log_target_to_string(log_get_target());
1180 if (arg_running_as == MANAGER_SYSTEM)
1181 args[i++] = "--system";
1183 args[i++] = "--session";
1186 args[i++] = "--dump-core";
1188 if (arg_crash_shell)
1189 args[i++] = "--crash-shell";
1191 if (arg_confirm_spawn)
1192 args[i++] = "--confirm-spawn";
1194 if (arg_show_status)
1195 args[i++] = "--show-status=1";
1197 args[i++] = "--show-status=0";
1199 #ifdef HAVE_SYSV_COMPAT
1200 if (arg_sysv_console)
1201 args[i++] = "--sysv-console=1";
1203 args[i++] = "--sysv-console=0";
1206 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1209 args[i++] = "--deserialize";
1214 assert(i <= ELEMENTSOF(args));
1216 execv(args[0], (char* const*) args);
1218 log_error("Failed to reexecute: %m");
1222 fclose(serialization);
1227 if (shutdown_verb) {
1228 const char * command_line[] = {
1229 SYSTEMD_SHUTDOWN_BINARY_PATH,
1234 execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line);
1235 log_error("Failed to execute shutdown binary, freezing: %m");