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_console = NULL;
76 static char **arg_default_controllers = NULL;
78 static FILE* serialization = NULL;
80 static void nop_handler(int sig) {
83 _noreturn_ static void crash(int sig) {
86 log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
91 /* We want to wait for the core process, hence let's enable SIGCHLD */
93 sa.sa_handler = nop_handler;
94 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
95 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
97 if ((pid = fork()) < 0)
98 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
103 /* Enable default signal handler for core dump */
105 sa.sa_handler = SIG_DFL;
106 assert_se(sigaction(sig, &sa, NULL) == 0);
108 /* Don't limit the core dump size */
110 rl.rlim_cur = RLIM_INFINITY;
111 rl.rlim_max = RLIM_INFINITY;
112 setrlimit(RLIMIT_CORE, &rl);
114 /* Just to be sure... */
115 assert_se(chdir("/") == 0);
117 /* Raise the signal again */
120 assert_not_reached("We shouldn't be here...");
127 /* Order things nicely. */
128 if ((r = wait_for_terminate(pid, &status)) < 0)
129 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
130 else if (status.si_code != CLD_DUMPED)
131 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
133 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
138 chvt(arg_crash_chvt);
140 if (arg_crash_shell) {
144 log_info("Executing crash shell in 10s...");
147 /* Let the kernel reap children for us */
149 sa.sa_handler = SIG_IGN;
150 sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
151 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
153 if ((pid = fork()) < 0)
154 log_error("Failed to fork off crash shell: %s", strerror(errno));
158 if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
159 log_error("Failed to acquire terminal: %s", strerror(-fd));
160 else if ((r = make_stdio(fd)) < 0)
161 log_error("Failed to duplicate terminal fd: %s", strerror(-r));
163 execl("/bin/sh", "/bin/sh", NULL);
165 log_error("execl() failed: %s", strerror(errno));
169 log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid);
172 log_info("Freezing execution.");
176 static void install_crash_handler(void) {
181 sa.sa_handler = crash;
182 sa.sa_flags = SA_NODEFER;
184 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
187 static int console_setup(bool do_reset) {
190 /* If we are init, we connect stdin/stdout/stderr to /dev/null
191 * and make sure we don't have a controlling tty. */
198 if ((tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) {
199 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
203 if ((r = reset_terminal(tty_fd)) < 0)
204 log_error("Failed to reset /dev/console: %s", strerror(-r));
206 close_nointr_nofail(tty_fd);
210 static int set_default_unit(const char *u) {
215 if (!(c = strdup(u)))
218 free(arg_default_unit);
219 arg_default_unit = c;
223 static int parse_proc_cmdline_word(const char *word) {
225 static const char * const rlmap[] = {
226 "emergency", SPECIAL_EMERGENCY_TARGET,
227 "single", SPECIAL_RESCUE_TARGET,
228 "-s", SPECIAL_RESCUE_TARGET,
229 "s", SPECIAL_RESCUE_TARGET,
230 "S", SPECIAL_RESCUE_TARGET,
231 "1", SPECIAL_RESCUE_TARGET,
232 "2", SPECIAL_RUNLEVEL2_TARGET,
233 "3", SPECIAL_RUNLEVEL3_TARGET,
234 "4", SPECIAL_RUNLEVEL4_TARGET,
235 "5", SPECIAL_RUNLEVEL5_TARGET,
240 if (startswith(word, "systemd.unit="))
241 return set_default_unit(word + 13);
243 else if (startswith(word, "systemd.log_target=")) {
245 if (log_set_target_from_string(word + 19) < 0)
246 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
248 } else if (startswith(word, "systemd.log_level=")) {
250 if (log_set_max_level_from_string(word + 18) < 0)
251 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
253 } else if (startswith(word, "systemd.log_color=")) {
255 if (log_show_color_from_string(word + 18) < 0)
256 log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
258 } else if (startswith(word, "systemd.log_location=")) {
260 if (log_show_location_from_string(word + 21) < 0)
261 log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
263 } else if (startswith(word, "systemd.dump_core=")) {
266 if ((r = parse_boolean(word + 18)) < 0)
267 log_warning("Failed to parse dump core switch %s, Ignoring.", word + 18);
271 } else if (startswith(word, "systemd.crash_shell=")) {
274 if ((r = parse_boolean(word + 20)) < 0)
275 log_warning("Failed to parse crash shell switch %s, Ignoring.", word + 20);
279 } else if (startswith(word, "systemd.confirm_spawn=")) {
282 if ((r = parse_boolean(word + 22)) < 0)
283 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word + 22);
285 arg_confirm_spawn = r;
287 } else if (startswith(word, "systemd.crash_chvt=")) {
290 if (safe_atoi(word + 19, &k) < 0)
291 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word + 19);
295 } else if (startswith(word, "systemd.show_status=")) {
298 if ((r = parse_boolean(word + 20)) < 0)
299 log_warning("Failed to parse show status switch %s, Ignoring.", word + 20);
302 #ifdef HAVE_SYSV_COMPAT
303 } else if (startswith(word, "systemd.sysv_console=")) {
306 if ((r = parse_boolean(word + 21)) < 0)
307 log_warning("Failed to parse SysV console switch %s, Ignoring.", word + 20);
309 arg_sysv_console = r;
312 } else if (startswith(word, "systemd.")) {
314 log_warning("Unknown kernel switch %s. Ignoring.", word);
316 log_info("Supported kernel switches:\n"
317 "systemd.unit=UNIT Default unit to start\n"
318 "systemd.dump_core=0|1 Dump core on crash\n"
319 "systemd.crash_shell=0|1 Run shell on crash\n"
320 "systemd.crash_chvt=N Change to VT #N on crash\n"
321 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
322 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
323 #ifdef HAVE_SYSV_COMPAT
324 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
326 "systemd.log_target=console|kmsg|syslog|syslog-or-kmsg|null\n"
328 "systemd.log_level=LEVEL Log level\n"
329 "systemd.log_color=0|1 Highlight important log messages\n"
330 "systemd.log_location=0|1 Include code location in log messages\n");
332 } else if (startswith(word, "console=")) {
340 /* Ignore the console setting if set to a VT */
342 !startswith(k, "tty") ||
343 k[3+strspn(k+3, "0123456789")] != 0) {
345 if (!(w = strndup(k, l)))
352 } else if (streq(word, "quiet")) {
353 arg_show_status = false;
354 #ifdef HAVE_SYSV_COMPAT
355 arg_sysv_console = false;
360 /* SysV compatibility */
361 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
362 if (streq(word, rlmap[i]))
363 return set_default_unit(rlmap[i+1]);
369 static int config_parse_level(
370 const char *filename,
382 log_set_max_level_from_string(rvalue);
386 static int config_parse_target(
387 const char *filename,
399 log_set_target_from_string(rvalue);
403 static int config_parse_color(
404 const char *filename,
416 log_show_color_from_string(rvalue);
420 static int config_parse_location(
421 const char *filename,
433 log_show_location_from_string(rvalue);
437 static int config_parse_cpu_affinity(
438 const char *filename,
456 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
461 if (!(t = strndup(w, l)))
464 r = safe_atou(t, &cpu);
468 if (!(c = cpu_set_malloc(&ncpus)))
471 if (r < 0 || cpu >= ncpus) {
472 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
477 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
481 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
482 log_warning("Failed to set CPU affinity: %m");
490 static int parse_config_file(void) {
492 const ConfigItem items[] = {
493 { "LogLevel", config_parse_level, NULL, "Manager" },
494 { "LogTarget", config_parse_target, NULL, "Manager" },
495 { "LogColor", config_parse_color, NULL, "Manager" },
496 { "LogLocation", config_parse_location, NULL, "Manager" },
497 { "DumpCore", config_parse_bool, &arg_dump_core, "Manager" },
498 { "CrashShell", config_parse_bool, &arg_crash_shell, "Manager" },
499 { "ShowStatus", config_parse_bool, &arg_show_status, "Manager" },
500 #ifdef HAVE_SYSV_COMPAT
501 { "SysVConsole", config_parse_bool, &arg_sysv_console, "Manager" },
503 { "CrashChVT", config_parse_int, &arg_crash_chvt, "Manager" },
504 { "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" },
505 { "MountAuto", config_parse_bool, &arg_mount_auto, "Manager" },
506 { "SwapAuto", config_parse_bool, &arg_swap_auto, "Manager" },
507 { "DefaultControllers", config_parse_strv, &arg_default_controllers, "Manager" },
508 { NULL, NULL, NULL, NULL }
511 static const char * const sections[] = {
520 fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
522 if (!(f = fopen(fn, "re"))) {
526 log_warning("Failed to open configuration file '%s': %m", fn);
530 if ((r = config_parse(fn, f, sections, items, false, NULL)) < 0)
531 log_warning("Failed to parse configuration file: %s", strerror(-r));
538 static int parse_proc_cmdline(void) {
539 char *line, *w, *state;
543 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
544 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
548 FOREACH_WORD_QUOTED(w, l, line, state) {
551 if (!(word = strndup(w, l))) {
556 r = parse_proc_cmdline_word(word);
570 static int parse_argv(int argc, char *argv[]) {
573 ARG_LOG_LEVEL = 0x100,
581 ARG_DUMP_CONFIGURATION_ITEMS,
591 static const struct option options[] = {
592 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
593 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
594 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
595 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
596 { "unit", required_argument, NULL, ARG_UNIT },
597 { "system", no_argument, NULL, ARG_SYSTEM },
598 { "user", no_argument, NULL, ARG_USER },
599 { "test", no_argument, NULL, ARG_TEST },
600 { "help", no_argument, NULL, 'h' },
601 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
602 { "dump-core", no_argument, NULL, ARG_DUMP_CORE },
603 { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL },
604 { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
605 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
606 #ifdef HAVE_SYSV_COMPAT
607 { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
609 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
610 { "introspect", optional_argument, NULL, ARG_INTROSPECT },
619 while ((c = getopt_long(argc, argv, "hD", options, NULL)) >= 0)
624 if ((r = log_set_max_level_from_string(optarg)) < 0) {
625 log_error("Failed to parse log level %s.", optarg);
633 if ((r = log_set_target_from_string(optarg)) < 0) {
634 log_error("Failed to parse log target %s.", optarg);
643 if ((r = log_show_color_from_string(optarg)) < 0) {
644 log_error("Failed to parse log color setting %s.", optarg);
648 log_show_color(true);
652 case ARG_LOG_LOCATION:
655 if ((r = log_show_location_from_string(optarg)) < 0) {
656 log_error("Failed to parse log location setting %s.", optarg);
660 log_show_location(true);
666 if ((r = set_default_unit(optarg)) < 0) {
667 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
674 arg_running_as = MANAGER_SYSTEM;
678 arg_running_as = MANAGER_USER;
682 arg_action = ACTION_TEST;
685 case ARG_DUMP_CONFIGURATION_ITEMS:
686 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
690 arg_dump_core = true;
693 case ARG_CRASH_SHELL:
694 arg_crash_shell = true;
697 case ARG_CONFIRM_SPAWN:
698 arg_confirm_spawn = true;
701 case ARG_SHOW_STATUS:
704 if ((r = parse_boolean(optarg)) < 0) {
705 log_error("Failed to show status boolean %s.", optarg);
710 arg_show_status = true;
712 #ifdef HAVE_SYSV_COMPAT
713 case ARG_SYSV_CONSOLE:
716 if ((r = parse_boolean(optarg)) < 0) {
717 log_error("Failed to SysV console boolean %s.", optarg);
720 arg_sysv_console = r;
722 arg_sysv_console = true;
726 case ARG_DESERIALIZE: {
730 if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
731 log_error("Failed to parse deserialize option %s.", optarg);
735 if (!(f = fdopen(fd, "r"))) {
736 log_error("Failed to open serialization fd: %m");
741 fclose(serialization);
748 case ARG_INTROSPECT: {
749 const char * const * i = NULL;
751 for (i = bus_interface_table; *i; i += 2)
752 if (!optarg || streq(i[0], optarg)) {
753 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
756 fputs("</node>\n", stdout);
763 log_error("Unknown interface %s.", optarg);
765 arg_action = ACTION_DONE;
770 arg_action = ACTION_HELP;
774 log_set_max_level(LOG_DEBUG);
781 log_error("Unknown option code %c", c);
785 /* PID 1 will get the kernel arguments as parameters, which we
786 * ignore and unconditionally read from
787 * /proc/cmdline. However, we need to ignore those arguments
789 if (arg_running_as != MANAGER_SYSTEM && optind < argc) {
790 log_error("Excess arguments.");
797 static int help(void) {
799 printf("%s [OPTIONS...]\n\n"
800 "Starts up and maintains the system or user services.\n\n"
801 " -h --help Show this help\n"
802 " --test Determine startup sequence, dump it and exit\n"
803 " --dump-configuration-items Dump understood unit configuration items\n"
804 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
805 " --unit=UNIT Set default unit\n"
806 " --system Run a system instance, even if PID != 1\n"
807 " --user Run a user instance\n"
808 " --dump-core Dump core on crash\n"
809 " --crash-shell Run shell on crash\n"
810 " --confirm-spawn Ask for confirmation when spawning processes\n"
811 " --show-status[=0|1] Show status updates on the console during bootup\n"
812 #ifdef HAVE_SYSV_COMPAT
813 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
815 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
816 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
817 " --log-color[=0|1] Highlight important log messages\n"
818 " --log-location[=0|1] Include code location in log messages\n",
819 program_invocation_short_name);
824 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
833 if ((r = manager_open_serialization(m, &f)) < 0) {
834 log_error("Failed to create serialization faile: %s", strerror(-r));
838 if (!(fds = fdset_new())) {
840 log_error("Failed to allocate fd set: %s", strerror(-r));
844 if ((r = manager_serialize(m, f, fds)) < 0) {
845 log_error("Failed to serialize state: %s", strerror(-r));
849 if (fseeko(f, 0, SEEK_SET) < 0) {
850 log_error("Failed to rewind serialization fd: %m");
854 if ((r = fd_cloexec(fileno(f), false)) < 0) {
855 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
859 if ((r = fdset_cloexec(fds, false)) < 0) {
860 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
878 static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
880 unsigned long long a, b;
884 if (!(e = getenv("RD_TIMESTAMP")))
887 if (sscanf(e, "%llu %llu", &a, &b) != 2)
890 t->realtime = (usec_t) a;
891 t->monotonic = (usec_t) b;
896 static void test_mtab(void) {
899 if (readlink_malloc("/etc/mtab", &p) >= 0) {
902 b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
909 log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
910 "This is not supported anymore. "
911 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
914 int main(int argc, char *argv[]) {
916 int r, retval = EXIT_FAILURE;
918 bool reexecute = false;
919 const char *shutdown_verb = NULL;
920 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
921 char systemd[] = "systemd";
923 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
924 /* This is compatbility support for SysV, where
925 * calling init as a user is identical to telinit. */
928 execv(SYSTEMCTL_BINARY_PATH, argv);
929 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
933 /* If we get started via the /sbin/init symlink then we are
934 called 'init'. After a subsequent reexecution we are then
935 called 'systemd'. That is confusing, hence let's call us
936 systemd right-away. */
938 program_invocation_short_name = systemd;
939 prctl(PR_SET_NAME, systemd);
941 log_show_color(isatty(STDERR_FILENO) > 0);
942 log_show_location(false);
943 log_set_max_level(LOG_INFO);
946 arg_running_as = MANAGER_SYSTEM;
947 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
949 /* This might actually not return, but cause a
951 if (selinux_setup(argv) < 0)
954 if (label_init() < 0)
957 arg_running_as = MANAGER_USER;
958 log_set_target(LOG_TARGET_CONSOLE);
961 if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
964 /* Mount /proc, /sys and friends, so that /proc/cmdline and
965 * /proc/$PID/fd is available. */
966 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
967 if (mount_setup() < 0)
970 /* Reset all signal handlers. */
971 assert_se(reset_all_signal_handlers() == 0);
973 /* If we are init, we can block sigkill. Yay. */
974 ignore_signals(SIGNALS_IGNORE, -1);
976 if (parse_config_file() < 0)
979 if (arg_running_as == MANAGER_SYSTEM)
980 if (parse_proc_cmdline() < 0)
983 log_parse_environment();
985 if (parse_argv(argc, argv) < 0)
988 if (arg_action == ACTION_HELP) {
991 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
992 unit_dump_config_items(stdout);
993 retval = EXIT_SUCCESS;
995 } else if (arg_action == ACTION_DONE) {
996 retval = EXIT_SUCCESS;
1000 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
1002 /* Remember open file descriptors for later deserialization */
1003 if (serialization) {
1004 if ((r = fdset_new_fill(&fds)) < 0) {
1005 log_error("Failed to allocate fd set: %s", strerror(-r));
1009 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
1011 close_all_fds(NULL, 0);
1013 /* Set up PATH unless it is already set */
1015 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
1016 arg_running_as == MANAGER_SYSTEM);
1018 if (arg_running_as == MANAGER_SYSTEM) {
1019 /* Parse the data passed to us by the initrd and unset it */
1020 parse_initrd_timestamp(&initrd_timestamp);
1021 filter_environ("RD_");
1023 /* Unset some environment variables passed in from the
1024 * kernel that don't really make sense for us. */
1029 /* Move out of the way, so that we won't block unmounts */
1030 assert_se(chdir("/") == 0);
1032 if (arg_running_as == MANAGER_SYSTEM) {
1033 /* Become a session leader if we aren't one yet. */
1036 /* Disable the umask logic */
1040 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
1041 dbus_connection_set_change_sigpipe(FALSE);
1043 /* Reset the console, but only if this is really init and we
1044 * are freshly booted */
1045 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
1046 console_setup(getpid() == 1 && !serialization);
1050 /* Open the logging devices, if possible and necessary */
1053 /* Make sure we leave a core dump without panicing the
1056 install_crash_handler();
1058 log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
1059 PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
1061 if (arg_running_as == MANAGER_SYSTEM && !serialization) {
1064 if (arg_show_status)
1071 mkdir_p("/dev/.systemd/ask-password/", 0755);
1076 if ((r = manager_new(arg_running_as, &m)) < 0) {
1077 log_error("Failed to allocate manager object: %s", strerror(-r));
1081 m->confirm_spawn = arg_confirm_spawn;
1082 m->show_status = arg_show_status;
1083 #ifdef HAVE_SYSV_COMPAT
1084 m->sysv_console = arg_sysv_console;
1086 m->mount_auto = arg_mount_auto;
1087 m->swap_auto = arg_swap_auto;
1089 if (dual_timestamp_is_set(&initrd_timestamp))
1090 m->initrd_timestamp = initrd_timestamp;
1093 manager_set_console(m, arg_console);
1095 if (arg_default_controllers)
1096 manager_set_default_controllers(m, arg_default_controllers);
1098 if ((r = manager_startup(m, serialization, fds)) < 0)
1099 log_error("Failed to fully start up daemon: %s", strerror(-r));
1102 /* This will close all file descriptors that were opened, but
1103 * not claimed by any unit. */
1109 if (serialization) {
1110 fclose(serialization);
1111 serialization = NULL;
1114 Unit *target = NULL;
1116 dbus_error_init(&error);
1118 log_debug("Activating default unit: %s", arg_default_unit);
1120 if ((r = manager_load_unit(m, arg_default_unit, NULL, &error, &target)) < 0) {
1121 log_error("Failed to load default target: %s", bus_error(&error, r));
1122 dbus_error_free(&error);
1123 } else if (target->meta.load_state == UNIT_ERROR)
1124 log_error("Failed to load default target: %s", strerror(-target->meta.load_error));
1125 else if (target->meta.load_state == UNIT_MASKED)
1126 log_error("Default target masked.");
1128 if (!target || target->meta.load_state != UNIT_LOADED) {
1129 log_info("Trying to load rescue target...");
1131 if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target)) < 0) {
1132 log_error("Failed to load rescue target: %s", bus_error(&error, r));
1133 dbus_error_free(&error);
1135 } else if (target->meta.load_state == UNIT_ERROR) {
1136 log_error("Failed to load rescue target: %s", strerror(-target->meta.load_error));
1138 } else if (target->meta.load_state == UNIT_MASKED) {
1139 log_error("Rescue target masked.");
1144 assert(target->meta.load_state == UNIT_LOADED);
1146 if (arg_action == ACTION_TEST) {
1147 printf("-> By units:\n");
1148 manager_dump_units(m, stdout, "\t");
1151 if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, NULL)) < 0) {
1152 log_error("Failed to start default target: %s", bus_error(&error, r));
1153 dbus_error_free(&error);
1157 if (arg_action == ACTION_TEST) {
1158 printf("-> By jobs:\n");
1159 manager_dump_jobs(m, stdout, "\t");
1160 retval = EXIT_SUCCESS;
1166 if ((r = manager_loop(m)) < 0) {
1167 log_error("Failed to run mainloop: %s", strerror(-r));
1171 switch (m->exit_code) {
1174 retval = EXIT_SUCCESS;
1178 case MANAGER_RELOAD:
1179 log_info("Reloading.");
1180 if ((r = manager_reload(m)) < 0)
1181 log_error("Failed to reload: %s", strerror(-r));
1184 case MANAGER_REEXECUTE:
1185 if (prepare_reexecute(m, &serialization, &fds) < 0)
1189 log_notice("Reexecuting.");
1192 case MANAGER_REBOOT:
1193 case MANAGER_POWEROFF:
1195 case MANAGER_KEXEC: {
1196 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1197 [MANAGER_REBOOT] = "reboot",
1198 [MANAGER_POWEROFF] = "poweroff",
1199 [MANAGER_HALT] = "halt",
1200 [MANAGER_KEXEC] = "kexec"
1203 assert_se(shutdown_verb = table[m->exit_code]);
1205 log_notice("Shutting down.");
1210 assert_not_reached("Unknown exit code.");
1218 free(arg_default_unit);
1220 strv_free(arg_default_controllers);
1227 const char *args[15];
1231 assert(serialization);
1234 args[i++] = SYSTEMD_BINARY_PATH;
1236 args[i++] = "--log-level";
1237 args[i++] = log_level_to_string(log_get_max_level());
1239 args[i++] = "--log-target";
1240 args[i++] = log_target_to_string(log_get_target());
1242 if (arg_running_as == MANAGER_SYSTEM)
1243 args[i++] = "--system";
1245 args[i++] = "--user";
1248 args[i++] = "--dump-core";
1250 if (arg_crash_shell)
1251 args[i++] = "--crash-shell";
1253 if (arg_confirm_spawn)
1254 args[i++] = "--confirm-spawn";
1256 if (arg_show_status)
1257 args[i++] = "--show-status=1";
1259 args[i++] = "--show-status=0";
1261 #ifdef HAVE_SYSV_COMPAT
1262 if (arg_sysv_console)
1263 args[i++] = "--sysv-console=1";
1265 args[i++] = "--sysv-console=0";
1268 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1271 args[i++] = "--deserialize";
1276 assert(i <= ELEMENTSOF(args));
1278 execv(args[0], (char* const*) args);
1280 log_error("Failed to reexecute: %m");
1284 fclose(serialization);
1289 if (shutdown_verb) {
1290 const char * command_line[] = {
1291 SYSTEMD_SHUTDOWN_BINARY_PATH,
1296 execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line);
1297 log_error("Failed to execute shutdown binary, freezing: %m");