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"
57 ACTION_DUMP_CONFIGURATION_ITEMS,
59 } arg_action = ACTION_RUN;
61 static char *arg_default_unit = NULL;
62 static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
64 static bool arg_dump_core = true;
65 static bool arg_crash_shell = false;
66 static int arg_crash_chvt = -1;
67 static bool arg_confirm_spawn = false;
68 static bool arg_show_status = true;
69 #ifdef HAVE_SYSV_COMPAT
70 static bool arg_sysv_console = true;
72 static bool arg_mount_auto = true;
73 static bool arg_swap_auto = true;
74 static char *arg_console = NULL;
76 static FILE* serialization = NULL;
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...");
125 /* Order things nicely. */
126 if ((r = wait_for_terminate(pid, &status)) < 0)
127 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
128 else if (status.si_code != CLD_DUMPED)
129 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
131 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
136 chvt(arg_crash_chvt);
138 if (arg_crash_shell) {
142 log_info("Executing crash shell in 10s...");
145 /* Let the kernel reap children for us */
147 sa.sa_handler = SIG_IGN;
148 sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
149 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
151 if ((pid = fork()) < 0)
152 log_error("Failed to fork off crash shell: %s", strerror(errno));
156 if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
157 log_error("Failed to acquire terminal: %s", strerror(-fd));
158 else if ((r = make_stdio(fd)) < 0)
159 log_error("Failed to duplicate terminal fd: %s", strerror(-r));
161 execl("/bin/sh", "/bin/sh", NULL);
163 log_error("execl() failed: %s", strerror(errno));
167 log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid);
170 log_info("Freezing execution.");
174 static void install_crash_handler(void) {
179 sa.sa_handler = crash;
180 sa.sa_flags = SA_NODEFER;
182 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
185 static int console_setup(bool do_reset) {
188 /* If we are init, we connect stdin/stdout/stderr to /dev/null
189 * and make sure we don't have a controlling tty. */
196 if ((tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) {
197 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
201 if ((r = reset_terminal(tty_fd)) < 0)
202 log_error("Failed to reset /dev/console: %s", strerror(-r));
204 close_nointr_nofail(tty_fd);
208 static int set_default_unit(const char *u) {
213 if (!(c = strdup(u)))
216 free(arg_default_unit);
217 arg_default_unit = c;
221 static int parse_proc_cmdline_word(const char *word) {
223 static const char * const rlmap[] = {
224 "emergency", SPECIAL_EMERGENCY_TARGET,
225 "single", SPECIAL_RESCUE_TARGET,
226 "-s", SPECIAL_RESCUE_TARGET,
227 "s", SPECIAL_RESCUE_TARGET,
228 "S", SPECIAL_RESCUE_TARGET,
229 "1", SPECIAL_RESCUE_TARGET,
230 "2", SPECIAL_RUNLEVEL2_TARGET,
231 "3", SPECIAL_RUNLEVEL3_TARGET,
232 "4", SPECIAL_RUNLEVEL4_TARGET,
233 "5", SPECIAL_RUNLEVEL5_TARGET,
238 if (startswith(word, "systemd.unit="))
239 return set_default_unit(word + 13);
241 else if (startswith(word, "systemd.log_target=")) {
243 if (log_set_target_from_string(word + 19) < 0)
244 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
246 } else if (startswith(word, "systemd.log_level=")) {
248 if (log_set_max_level_from_string(word + 18) < 0)
249 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
251 } else if (startswith(word, "systemd.log_color=")) {
253 if (log_show_color_from_string(word + 18) < 0)
254 log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
256 } else if (startswith(word, "systemd.log_location=")) {
258 if (log_show_location_from_string(word + 21) < 0)
259 log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
261 } else if (startswith(word, "systemd.dump_core=")) {
264 if ((r = parse_boolean(word + 18)) < 0)
265 log_warning("Failed to parse dump core switch %s, Ignoring.", word + 18);
269 } else if (startswith(word, "systemd.crash_shell=")) {
272 if ((r = parse_boolean(word + 20)) < 0)
273 log_warning("Failed to parse crash shell switch %s, Ignoring.", word + 20);
277 } else if (startswith(word, "systemd.confirm_spawn=")) {
280 if ((r = parse_boolean(word + 22)) < 0)
281 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word + 22);
283 arg_confirm_spawn = r;
285 } else if (startswith(word, "systemd.crash_chvt=")) {
288 if (safe_atoi(word + 19, &k) < 0)
289 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word + 19);
293 } else if (startswith(word, "systemd.show_status=")) {
296 if ((r = parse_boolean(word + 20)) < 0)
297 log_warning("Failed to parse show status switch %s, Ignoring.", word + 20);
300 #ifdef HAVE_SYSV_COMPAT
301 } else if (startswith(word, "systemd.sysv_console=")) {
304 if ((r = parse_boolean(word + 21)) < 0)
305 log_warning("Failed to parse SysV console switch %s, Ignoring.", word + 20);
307 arg_sysv_console = r;
310 } else if (startswith(word, "systemd.")) {
312 log_warning("Unknown kernel switch %s. Ignoring.", word);
314 log_info("Supported kernel switches:\n"
315 "systemd.unit=UNIT Default unit to start\n"
316 "systemd.dump_core=0|1 Dump core on crash\n"
317 "systemd.crash_shell=0|1 Run shell on crash\n"
318 "systemd.crash_chvt=N Change to VT #N on crash\n"
319 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
320 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
321 #ifdef HAVE_SYSV_COMPAT
322 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
324 "systemd.log_target=console|kmsg|syslog|syslog-or-kmsg|null\n"
326 "systemd.log_level=LEVEL Log level\n"
327 "systemd.log_color=0|1 Highlight important log messages\n"
328 "systemd.log_location=0|1 Include code location in log messages\n");
330 } else if (startswith(word, "console=")) {
338 /* Ignore the console setting if set to a VT */
340 !startswith(k, "tty") ||
341 k[3+strspn(k+3, "0123456789")] != 0) {
343 if (!(w = strndup(k, l)))
350 } else if (streq(word, "quiet")) {
351 arg_show_status = false;
352 #ifdef HAVE_SYSV_COMPAT
353 arg_sysv_console = false;
358 /* SysV compatibility */
359 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
360 if (streq(word, rlmap[i]))
361 return set_default_unit(rlmap[i+1]);
367 static int config_parse_level(
368 const char *filename,
380 log_set_max_level_from_string(rvalue);
384 static int config_parse_target(
385 const char *filename,
397 log_set_target_from_string(rvalue);
401 static int config_parse_color(
402 const char *filename,
414 log_show_color_from_string(rvalue);
418 static int config_parse_location(
419 const char *filename,
431 log_show_location_from_string(rvalue);
435 static int config_parse_cpu_affinity(
436 const char *filename,
454 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
459 if (!(t = strndup(w, l)))
462 r = safe_atou(t, &cpu);
466 if (!(c = cpu_set_malloc(&ncpus)))
469 if (r < 0 || cpu >= ncpus) {
470 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
475 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
479 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
480 log_warning("Failed to set CPU affinity: %m");
488 static int parse_config_file(void) {
490 const ConfigItem items[] = {
491 { "LogLevel", config_parse_level, NULL, "Manager" },
492 { "LogTarget", config_parse_target, NULL, "Manager" },
493 { "LogColor", config_parse_color, NULL, "Manager" },
494 { "LogLocation", config_parse_location, NULL, "Manager" },
495 { "DumpCore", config_parse_bool, &arg_dump_core, "Manager" },
496 { "CrashShell", config_parse_bool, &arg_crash_shell, "Manager" },
497 { "ShowStatus", config_parse_bool, &arg_show_status, "Manager" },
498 #ifdef HAVE_SYSV_COMPAT
499 { "SysVConsole", config_parse_bool, &arg_sysv_console, "Manager" },
501 { "CrashChVT", config_parse_int, &arg_crash_chvt, "Manager" },
502 { "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" },
503 { "MountAuto", config_parse_bool, &arg_mount_auto, "Manager" },
504 { "SwapAuto", config_parse_bool, &arg_swap_auto, "Manager" },
505 { NULL, NULL, NULL, NULL }
508 static const char * const sections[] = {
517 fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : SESSION_CONFIG_FILE;
519 if (!(f = fopen(fn, "re"))) {
523 log_warning("Failed to open configuration file '%s': %m", fn);
527 if ((r = config_parse(fn, f, sections, items, false, NULL)) < 0)
528 log_warning("Failed to parse configuration file: %s", strerror(-r));
535 static int parse_proc_cmdline(void) {
536 char *line, *w, *state;
540 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
541 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
545 FOREACH_WORD_QUOTED(w, l, line, state) {
548 if (!(word = strndup(w, l))) {
553 r = parse_proc_cmdline_word(word);
567 static int parse_argv(int argc, char *argv[]) {
570 ARG_LOG_LEVEL = 0x100,
578 ARG_DUMP_CONFIGURATION_ITEMS,
588 static const struct option options[] = {
589 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
590 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
591 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
592 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
593 { "unit", required_argument, NULL, ARG_UNIT },
594 { "system", no_argument, NULL, ARG_SYSTEM },
595 { "session", no_argument, NULL, ARG_SESSION },
596 { "test", no_argument, NULL, ARG_TEST },
597 { "help", no_argument, NULL, 'h' },
598 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
599 { "dump-core", no_argument, NULL, ARG_DUMP_CORE },
600 { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL },
601 { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
602 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
603 #ifdef HAVE_SYSV_COMPAT
604 { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
606 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
607 { "introspect", optional_argument, NULL, ARG_INTROSPECT },
616 while ((c = getopt_long(argc, argv, "hD", options, NULL)) >= 0)
621 if ((r = log_set_max_level_from_string(optarg)) < 0) {
622 log_error("Failed to parse log level %s.", optarg);
630 if ((r = log_set_target_from_string(optarg)) < 0) {
631 log_error("Failed to parse log target %s.", optarg);
640 if ((r = log_show_color_from_string(optarg)) < 0) {
641 log_error("Failed to parse log color setting %s.", optarg);
645 log_show_color(true);
649 case ARG_LOG_LOCATION:
652 if ((r = log_show_location_from_string(optarg)) < 0) {
653 log_error("Failed to parse log location setting %s.", optarg);
657 log_show_location(true);
663 if ((r = set_default_unit(optarg)) < 0) {
664 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
671 arg_running_as = MANAGER_SYSTEM;
675 arg_running_as = MANAGER_SESSION;
679 arg_action = ACTION_TEST;
682 case ARG_DUMP_CONFIGURATION_ITEMS:
683 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
687 arg_dump_core = true;
690 case ARG_CRASH_SHELL:
691 arg_crash_shell = true;
694 case ARG_CONFIRM_SPAWN:
695 arg_confirm_spawn = true;
698 case ARG_SHOW_STATUS:
701 if ((r = parse_boolean(optarg)) < 0) {
702 log_error("Failed to show status boolean %s.", optarg);
707 arg_show_status = true;
709 #ifdef HAVE_SYSV_COMPAT
710 case ARG_SYSV_CONSOLE:
713 if ((r = parse_boolean(optarg)) < 0) {
714 log_error("Failed to SysV console boolean %s.", optarg);
717 arg_sysv_console = r;
719 arg_sysv_console = true;
723 case ARG_DESERIALIZE: {
727 if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
728 log_error("Failed to parse deserialize option %s.", optarg);
732 if (!(f = fdopen(fd, "r"))) {
733 log_error("Failed to open serialization fd: %m");
738 fclose(serialization);
745 case ARG_INTROSPECT: {
746 const char * const * i = NULL;
748 for (i = bus_interface_table; *i; i += 2)
749 if (!optarg || streq(i[0], optarg)) {
750 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
753 fputs("</node>\n", stdout);
760 log_error("Unknown interface %s.", optarg);
762 arg_action = ACTION_DONE;
767 arg_action = ACTION_HELP;
771 log_set_max_level(LOG_DEBUG);
778 log_error("Unknown option code %c", c);
782 /* PID 1 will get the kernel arguments as parameters, which we
783 * ignore and unconditionally read from
784 * /proc/cmdline. However, we need to ignore those arguments
786 if (arg_running_as != MANAGER_SYSTEM && optind < argc) {
787 log_error("Excess arguments.");
794 static int help(void) {
796 printf("%s [OPTIONS...]\n\n"
797 "Starts up and maintains the system or a session.\n\n"
798 " -h --help Show this help\n"
799 " --test Determine startup sequence, dump it and exit\n"
800 " --dump-configuration-items Dump understood unit configuration items\n"
801 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
802 " --unit=UNIT Set default unit\n"
803 " --system Run a system instance, even if PID != 1\n"
804 " --session Run a session instance\n"
805 " --dump-core Dump core on crash\n"
806 " --crash-shell Run shell on crash\n"
807 " --confirm-spawn Ask for confirmation when spawning processes\n"
808 " --show-status[=0|1] Show status updates on the console during bootup\n"
809 #ifdef HAVE_SYSV_COMPAT
810 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
812 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
813 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
814 " --log-color[=0|1] Highlight important log messages\n"
815 " --log-location[=0|1] Include code location in log messages\n",
816 program_invocation_short_name);
821 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
830 if ((r = manager_open_serialization(m, &f)) < 0) {
831 log_error("Failed to create serialization faile: %s", strerror(-r));
835 if (!(fds = fdset_new())) {
837 log_error("Failed to allocate fd set: %s", strerror(-r));
841 if ((r = manager_serialize(m, f, fds)) < 0) {
842 log_error("Failed to serialize state: %s", strerror(-r));
846 if (fseeko(f, 0, SEEK_SET) < 0) {
847 log_error("Failed to rewind serialization fd: %m");
851 if ((r = fd_cloexec(fileno(f), false)) < 0) {
852 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
856 if ((r = fdset_cloexec(fds, false)) < 0) {
857 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
875 static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
877 unsigned long long a, b;
881 if (!(e = getenv("RD_TIMESTAMP")))
884 if (sscanf(e, "%llu %llu", &a, &b) != 2)
887 t->realtime = (usec_t) a;
888 t->monotonic = (usec_t) b;
893 static void test_mtab(void) {
896 if (readlink_malloc("/etc/mtab", &p) >= 0) {
899 b = streq(p, "/proc/self/mounts");
906 log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
907 "This is not supported anymore. "
908 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
911 int main(int argc, char *argv[]) {
913 int r, retval = EXIT_FAILURE;
915 bool reexecute = false;
916 const char *shutdown_verb = NULL;
917 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
918 char systemd[] = "systemd";
920 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
921 /* This is compatbility support for SysV, where
922 * calling init as a user is identical to telinit. */
925 execv(SYSTEMCTL_BINARY_PATH, argv);
926 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
930 /* If we get started via the /sbin/init symlink then we are
931 called 'init'. After a subsequent reexecution we are then
932 called 'systemd'. That is confusing, hence let's call us
933 systemd right-away. */
935 program_invocation_short_name = systemd;
936 prctl(PR_SET_NAME, systemd);
938 log_show_color(isatty(STDERR_FILENO) > 0);
939 log_show_location(false);
940 log_set_max_level(LOG_INFO);
943 arg_running_as = MANAGER_SYSTEM;
944 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
946 /* This might actually not return, but cause a
948 if (selinux_setup(argv) < 0)
951 if (label_init() < 0)
954 arg_running_as = MANAGER_SESSION;
955 log_set_target(LOG_TARGET_CONSOLE);
958 if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
961 /* Mount /proc, /sys and friends, so that /proc/cmdline and
962 * /proc/$PID/fd is available. */
963 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
964 if (mount_setup() < 0)
967 /* Reset all signal handlers. */
968 assert_se(reset_all_signal_handlers() == 0);
970 /* If we are init, we can block sigkill. Yay. */
971 ignore_signals(SIGNALS_IGNORE, -1);
973 if (parse_config_file() < 0)
976 if (arg_running_as == MANAGER_SYSTEM)
977 if (parse_proc_cmdline() < 0)
980 log_parse_environment();
982 if (parse_argv(argc, argv) < 0)
985 if (arg_action == ACTION_HELP) {
988 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
989 unit_dump_config_items(stdout);
990 retval = EXIT_SUCCESS;
992 } else if (arg_action == ACTION_DONE) {
993 retval = EXIT_SUCCESS;
997 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
999 /* Remember open file descriptors for later deserialization */
1000 if (serialization) {
1001 if ((r = fdset_new_fill(&fds)) < 0) {
1002 log_error("Failed to allocate fd set: %s", strerror(-r));
1006 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
1008 close_all_fds(NULL, 0);
1010 /* Set up PATH unless it is already set */
1012 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
1013 arg_running_as == MANAGER_SYSTEM);
1015 if (arg_running_as == MANAGER_SYSTEM) {
1016 /* Parse the data passed to us by the initrd and unset it */
1017 parse_initrd_timestamp(&initrd_timestamp);
1018 filter_environ("RD_");
1020 /* Unset some environment variables passed in from the
1021 * kernel that don't really make sense for us. */
1026 /* Move out of the way, so that we won't block unmounts */
1027 assert_se(chdir("/") == 0);
1029 if (arg_running_as == MANAGER_SYSTEM) {
1030 /* Become a session leader if we aren't one yet. */
1033 /* Disable the umask logic */
1037 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
1038 dbus_connection_set_change_sigpipe(FALSE);
1040 /* Reset the console, but only if this is really init and we
1041 * are freshly booted */
1042 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
1043 console_setup(getpid() == 1 && !serialization);
1047 /* Open the logging devices, if possible and necessary */
1050 /* Make sure we leave a core dump without panicing the
1053 install_crash_handler();
1055 log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
1056 PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
1058 if (arg_running_as == MANAGER_SYSTEM && !serialization) {
1061 if (arg_show_status)
1068 mkdir_p("/dev/.systemd/ask-password/", 0755);
1073 if ((r = manager_new(arg_running_as, &m)) < 0) {
1074 log_error("Failed to allocate manager object: %s", strerror(-r));
1078 m->confirm_spawn = arg_confirm_spawn;
1079 m->show_status = arg_show_status;
1080 #ifdef HAVE_SYSV_COMPAT
1081 m->sysv_console = arg_sysv_console;
1083 m->mount_auto = arg_mount_auto;
1084 m->swap_auto = arg_swap_auto;
1086 if (dual_timestamp_is_set(&initrd_timestamp))
1087 m->initrd_timestamp = initrd_timestamp;
1090 manager_set_console(m, arg_console);
1092 if ((r = manager_startup(m, serialization, fds)) < 0)
1093 log_error("Failed to fully start up daemon: %s", strerror(-r));
1096 /* This will close all file descriptors that were opened, but
1097 * not claimed by any unit. */
1103 if (serialization) {
1104 fclose(serialization);
1105 serialization = NULL;
1108 Unit *target = NULL;
1110 dbus_error_init(&error);
1112 log_debug("Activating default unit: %s", arg_default_unit);
1114 if ((r = manager_load_unit(m, arg_default_unit, NULL, &error, &target)) < 0) {
1115 log_error("Failed to load default target: %s", bus_error(&error, r));
1116 dbus_error_free(&error);
1117 } else if (target->meta.load_state == UNIT_ERROR)
1118 log_error("Failed to load default target: %s", strerror(-target->meta.load_error));
1119 else if (target->meta.load_state == UNIT_MASKED)
1120 log_error("Default target masked.");
1122 if (!target || target->meta.load_state != UNIT_LOADED) {
1123 log_info("Trying to load rescue target...");
1125 if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target)) < 0) {
1126 log_error("Failed to load rescue target: %s", bus_error(&error, r));
1127 dbus_error_free(&error);
1129 } else if (target->meta.load_state == UNIT_ERROR) {
1130 log_error("Failed to load rescue target: %s", strerror(-target->meta.load_error));
1132 } else if (target->meta.load_state == UNIT_MASKED) {
1133 log_error("Rescue target masked.");
1138 assert(target->meta.load_state == UNIT_LOADED);
1140 if (arg_action == ACTION_TEST) {
1141 printf("-> By units:\n");
1142 manager_dump_units(m, stdout, "\t");
1145 if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, NULL)) < 0) {
1146 log_error("Failed to start default target: %s", bus_error(&error, r));
1147 dbus_error_free(&error);
1151 if (arg_action == ACTION_TEST) {
1152 printf("-> By jobs:\n");
1153 manager_dump_jobs(m, stdout, "\t");
1154 retval = EXIT_SUCCESS;
1160 if ((r = manager_loop(m)) < 0) {
1161 log_error("Failed to run mainloop: %s", strerror(-r));
1165 switch (m->exit_code) {
1168 retval = EXIT_SUCCESS;
1172 case MANAGER_RELOAD:
1173 log_info("Reloading.");
1174 if ((r = manager_reload(m)) < 0)
1175 log_error("Failed to reload: %s", strerror(-r));
1178 case MANAGER_REEXECUTE:
1179 if (prepare_reexecute(m, &serialization, &fds) < 0)
1183 log_notice("Reexecuting.");
1186 case MANAGER_REBOOT:
1187 case MANAGER_POWEROFF:
1189 case MANAGER_KEXEC: {
1190 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1191 [MANAGER_REBOOT] = "reboot",
1192 [MANAGER_POWEROFF] = "poweroff",
1193 [MANAGER_HALT] = "halt",
1194 [MANAGER_KEXEC] = "kexec"
1197 assert_se(shutdown_verb = table[m->exit_code]);
1199 log_notice("Shutting down.");
1204 assert_not_reached("Unknown exit code.");
1212 free(arg_default_unit);
1220 const char *args[15];
1224 assert(serialization);
1227 args[i++] = SYSTEMD_BINARY_PATH;
1229 args[i++] = "--log-level";
1230 args[i++] = log_level_to_string(log_get_max_level());
1232 args[i++] = "--log-target";
1233 args[i++] = log_target_to_string(log_get_target());
1235 if (arg_running_as == MANAGER_SYSTEM)
1236 args[i++] = "--system";
1238 args[i++] = "--session";
1241 args[i++] = "--dump-core";
1243 if (arg_crash_shell)
1244 args[i++] = "--crash-shell";
1246 if (arg_confirm_spawn)
1247 args[i++] = "--confirm-spawn";
1249 if (arg_show_status)
1250 args[i++] = "--show-status=1";
1252 args[i++] = "--show-status=0";
1254 #ifdef HAVE_SYSV_COMPAT
1255 if (arg_sysv_console)
1256 args[i++] = "--sysv-console=1";
1258 args[i++] = "--sysv-console=0";
1261 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1264 args[i++] = "--deserialize";
1269 assert(i <= ELEMENTSOF(args));
1271 execv(args[0], (char* const*) args);
1273 log_error("Failed to reexecute: %m");
1277 fclose(serialization);
1282 if (shutdown_verb) {
1283 const char * command_line[] = {
1284 SYSTEMD_SHUTDOWN_BINARY_PATH,
1289 execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line);
1290 log_error("Failed to execute shutdown binary, freezing: %m");