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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/types.h>
32 #include <sys/prctl.h>
33 #include <sys/mount.h>
35 #ifdef HAVE_VALGRIND_VALGRIND_H
36 #include <valgrind/valgrind.h>
39 #include "sd-daemon.h"
40 #include "sd-messages.h"
44 #include "load-fragment.h"
47 #include "conf-parser.h"
55 #include "path-util.h"
56 #include "switch-root.h"
57 #include "capability.h"
62 #include "dbus-manager.h"
63 #include "bus-error.h"
66 #include "mount-setup.h"
67 #include "loopback-setup.h"
68 #include "hostname-setup.h"
69 #include "machine-id-setup.h"
70 #include "selinux-setup.h"
71 #include "ima-setup.h"
72 #include "smack-setup.h"
74 #include "kmod-setup.h"
82 ACTION_DUMP_CONFIGURATION_ITEMS,
84 } arg_action = ACTION_RUN;
86 static char *arg_default_unit = NULL;
87 static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
89 static bool arg_dump_core = true;
90 static bool arg_crash_shell = false;
91 static int arg_crash_chvt = -1;
92 static bool arg_confirm_spawn = false;
93 static bool arg_show_status = true;
94 static bool arg_switched_root = false;
95 static char ***arg_join_controllers = NULL;
96 static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
97 static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
98 static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
99 static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
100 static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
101 static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
102 static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
103 static usec_t arg_runtime_watchdog = 0;
104 static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
105 static char **arg_default_environment = NULL;
106 static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
107 static uint64_t arg_capability_bounding_set_drop = 0;
108 static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
110 static FILE* serialization = NULL;
112 static void nop_handler(int sig) {
115 _noreturn_ static void crash(int sig) {
118 /* Pass this on immediately, if this is not PID 1 */
120 else if (!arg_dump_core)
121 log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
123 struct sigaction sa = {
124 .sa_handler = nop_handler,
125 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
129 /* We want to wait for the core process, hence let's enable SIGCHLD */
130 sigaction(SIGCHLD, &sa, NULL);
134 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
137 struct rlimit rl = {};
139 /* Enable default signal handler for core dump */
141 sa.sa_handler = SIG_DFL;
142 sigaction(sig, &sa, NULL);
144 /* Don't limit the core dump size */
145 rl.rlim_cur = RLIM_INFINITY;
146 rl.rlim_max = RLIM_INFINITY;
147 setrlimit(RLIMIT_CORE, &rl);
149 /* Just to be sure... */
152 /* Raise the signal again */
155 assert_not_reached("We shouldn't be here...");
162 /* Order things nicely. */
163 r = wait_for_terminate(pid, &status);
165 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
166 else if (status.si_code != CLD_DUMPED)
167 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
169 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
174 chvt(arg_crash_chvt);
176 if (arg_crash_shell) {
177 struct sigaction sa = {
178 .sa_handler = SIG_IGN,
179 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
183 log_info("Executing crash shell in 10s...");
186 /* Let the kernel reap children for us */
187 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
191 log_error("Failed to fork off crash shell: %m");
193 make_console_stdio();
194 execl("/bin/sh", "/bin/sh", NULL);
196 log_error("execl() failed: %m");
200 log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid);
203 log_info("Freezing execution.");
207 static void install_crash_handler(void) {
208 struct sigaction sa = {
210 .sa_flags = SA_NODEFER,
213 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
216 static int console_setup(bool do_reset) {
219 /* If we are init, we connect stdin/stdout/stderr to /dev/null
220 * and make sure we don't have a controlling tty. */
227 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
229 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
233 /* We don't want to force text mode.
234 * plymouth may be showing pictures already from initrd. */
235 r = reset_terminal_fd(tty_fd, false);
237 log_error("Failed to reset /dev/console: %s", strerror(-r));
239 close_nointr_nofail(tty_fd);
243 static int set_default_unit(const char *u) {
252 free(arg_default_unit);
253 arg_default_unit = c;
258 static int parse_proc_cmdline_word(const char *word) {
260 static const char * const rlmap[] = {
261 "emergency", SPECIAL_EMERGENCY_TARGET,
262 "-b", SPECIAL_EMERGENCY_TARGET,
263 "single", SPECIAL_RESCUE_TARGET,
264 "-s", SPECIAL_RESCUE_TARGET,
265 "s", SPECIAL_RESCUE_TARGET,
266 "S", SPECIAL_RESCUE_TARGET,
267 "1", SPECIAL_RESCUE_TARGET,
268 "2", SPECIAL_RUNLEVEL2_TARGET,
269 "3", SPECIAL_RUNLEVEL3_TARGET,
270 "4", SPECIAL_RUNLEVEL4_TARGET,
271 "5", SPECIAL_RUNLEVEL5_TARGET,
276 if (startswith(word, "systemd.unit=")) {
279 return set_default_unit(word + 13);
281 } else if (startswith(word, "rd.systemd.unit=")) {
284 return set_default_unit(word + 16);
286 } else if (startswith(word, "systemd.log_target=")) {
288 if (log_set_target_from_string(word + 19) < 0)
289 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
291 } else if (startswith(word, "systemd.log_level=")) {
293 if (log_set_max_level_from_string(word + 18) < 0)
294 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
296 } else if (startswith(word, "systemd.log_color=")) {
298 if (log_show_color_from_string(word + 18) < 0)
299 log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
301 } else if (startswith(word, "systemd.log_location=")) {
303 if (log_show_location_from_string(word + 21) < 0)
304 log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
306 } else if (startswith(word, "systemd.dump_core=")) {
309 if ((r = parse_boolean(word + 18)) < 0)
310 log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18);
314 } else if (startswith(word, "systemd.crash_shell=")) {
317 if ((r = parse_boolean(word + 20)) < 0)
318 log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20);
322 } else if (startswith(word, "systemd.confirm_spawn=")) {
325 if ((r = parse_boolean(word + 22)) < 0)
326 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22);
328 arg_confirm_spawn = r;
330 } else if (startswith(word, "systemd.crash_chvt=")) {
333 if (safe_atoi(word + 19, &k) < 0)
334 log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19);
338 } else if (startswith(word, "systemd.show_status=")) {
341 if ((r = parse_boolean(word + 20)) < 0)
342 log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
345 } else if (startswith(word, "systemd.default_standard_output=")) {
348 if ((r = exec_output_from_string(word + 32)) < 0)
349 log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32);
351 arg_default_std_output = r;
352 } else if (startswith(word, "systemd.default_standard_error=")) {
355 if ((r = exec_output_from_string(word + 31)) < 0)
356 log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31);
358 arg_default_std_error = r;
359 } else if (startswith(word, "systemd.setenv=")) {
360 _cleanup_free_ char *cenv = NULL;
362 cenv = strdup(word + 15);
366 if (env_assignment_is_valid(cenv)) {
369 env = strv_env_set(arg_default_environment, cenv);
371 arg_default_environment = env;
373 log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv);
375 log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
377 } else if (startswith(word, "systemd.") ||
378 (in_initrd() && startswith(word, "rd.systemd."))) {
382 /* Ignore systemd.journald.xyz and friends */
384 if (startswith(c, "rd."))
386 if (startswith(c, "systemd."))
388 if (c[strcspn(c, ".=")] != '.') {
390 log_warning("Unknown kernel switch %s. Ignoring.", word);
392 log_info("Supported kernel switches:\n"
393 "systemd.unit=UNIT Default unit to start\n"
394 "rd.systemd.unit=UNIT Default unit to start when run in initrd\n"
395 "systemd.dump_core=0|1 Dump core on crash\n"
396 "systemd.crash_shell=0|1 Run shell on crash\n"
397 "systemd.crash_chvt=N Change to VT #N on crash\n"
398 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
399 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
400 "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
402 "systemd.log_level=LEVEL Log level\n"
403 "systemd.log_color=0|1 Highlight important log messages\n"
404 "systemd.log_location=0|1 Include code location in log messages\n"
405 "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
406 " Set default log output for services\n"
407 "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
408 " Set default log error output for services\n"
409 "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
412 } else if (streq(word, "quiet"))
413 arg_show_status = false;
414 else if (streq(word, "debug")) {
415 /* Log to kmsg, the journal socket will fill up before the
416 * journal is started and tools running during that time
417 * will block with every log message for for 60 seconds,
418 * before they give up. */
419 log_set_max_level(LOG_DEBUG);
420 log_set_target(LOG_TARGET_KMSG);
421 } else if (!in_initrd()) {
424 /* SysV compatibility */
425 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
426 if (streq(word, rlmap[i]))
427 return set_default_unit(rlmap[i+1]);
433 #define DEFINE_SETTER(name, func, descr) \
434 static int name(const char *unit, \
435 const char *filename, \
437 const char *section, \
438 const char *lvalue, \
440 const char *rvalue, \
452 log_syntax(unit, LOG_ERR, filename, line, -r, \
453 "Invalid " descr "'%s': %s", \
454 rvalue, strerror(-r)); \
459 DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
460 DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
461 DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
462 DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
465 static int config_parse_cpu_affinity2(const char *unit,
466 const char *filename,
485 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
490 if (!(t = strndup(w, l)))
493 r = safe_atou(t, &cpu);
497 if (!(c = cpu_set_malloc(&ncpus)))
500 if (r < 0 || cpu >= ncpus) {
501 log_syntax(unit, LOG_ERR, filename, line, -r,
502 "Failed to parse CPU affinity '%s'", rvalue);
507 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
511 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
512 log_warning_unit(unit, "Failed to set CPU affinity: %m");
520 static void strv_free_free(char ***l) {
532 static void free_join_controllers(void) {
533 strv_free_free(arg_join_controllers);
534 arg_join_controllers = NULL;
537 static int config_parse_join_controllers(const char *unit,
538 const char *filename,
555 free_join_controllers();
557 FOREACH_WORD_QUOTED(w, length, rvalue, state) {
560 s = strndup(w, length);
564 l = strv_split(s, ",");
569 if (strv_length(l) <= 1) {
574 if (!arg_join_controllers) {
575 arg_join_controllers = new(char**, 2);
576 if (!arg_join_controllers) {
581 arg_join_controllers[0] = l;
582 arg_join_controllers[1] = NULL;
589 t = new0(char**, n+2);
597 for (a = arg_join_controllers; *a; a++) {
599 if (strv_overlap(*a, l)) {
602 c = strv_merge(*a, l);
625 t[n++] = strv_uniq(l);
627 strv_free_free(arg_join_controllers);
628 arg_join_controllers = t;
635 static int parse_config_file(void) {
637 const ConfigTableItem items[] = {
638 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
639 { "Manager", "LogTarget", config_parse_target, 0, NULL },
640 { "Manager", "LogColor", config_parse_color, 0, NULL },
641 { "Manager", "LogLocation", config_parse_location, 0, NULL },
642 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
643 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
644 { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
645 { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
646 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
647 { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
648 { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
649 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
650 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
651 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
652 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval },
653 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
654 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
655 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
656 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
657 { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
658 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
659 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
660 { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
661 { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
662 { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
663 { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
664 { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
665 { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
666 { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
667 { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
668 { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
669 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
670 { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
671 { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
672 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
673 { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
674 { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
675 { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
676 { NULL, NULL, NULL, 0, NULL }
679 _cleanup_fclose_ FILE *f;
683 fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
689 log_warning("Failed to open configuration file '%s': %m", fn);
693 r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, false, NULL);
695 log_warning("Failed to parse configuration file: %s", strerror(-r));
700 static int parse_proc_cmdline(void) {
701 _cleanup_free_ char *line = NULL;
706 r = proc_cmdline(&line);
708 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
712 FOREACH_WORD_QUOTED(w, l, line, state) {
713 _cleanup_free_ char *word;
715 word = strndup(w, l);
719 r = parse_proc_cmdline_word(word);
721 log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
729 static int parse_argv(int argc, char *argv[]) {
732 ARG_LOG_LEVEL = 0x100,
741 ARG_DUMP_CONFIGURATION_ITEMS,
748 ARG_DEFAULT_STD_OUTPUT,
749 ARG_DEFAULT_STD_ERROR
752 static const struct option options[] = {
753 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
754 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
755 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
756 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
757 { "unit", required_argument, NULL, ARG_UNIT },
758 { "system", no_argument, NULL, ARG_SYSTEM },
759 { "user", no_argument, NULL, ARG_USER },
760 { "test", no_argument, NULL, ARG_TEST },
761 { "help", no_argument, NULL, 'h' },
762 { "version", no_argument, NULL, ARG_VERSION },
763 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
764 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
765 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
766 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
767 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
768 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
769 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
770 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
771 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
783 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
788 if ((r = log_set_max_level_from_string(optarg)) < 0) {
789 log_error("Failed to parse log level %s.", optarg);
797 if ((r = log_set_target_from_string(optarg)) < 0) {
798 log_error("Failed to parse log target %s.", optarg);
807 if ((r = log_show_color_from_string(optarg)) < 0) {
808 log_error("Failed to parse log color setting %s.", optarg);
812 log_show_color(true);
816 case ARG_LOG_LOCATION:
819 if ((r = log_show_location_from_string(optarg)) < 0) {
820 log_error("Failed to parse log location setting %s.", optarg);
824 log_show_location(true);
828 case ARG_DEFAULT_STD_OUTPUT:
830 if ((r = exec_output_from_string(optarg)) < 0) {
831 log_error("Failed to parse default standard output setting %s.", optarg);
834 arg_default_std_output = r;
837 case ARG_DEFAULT_STD_ERROR:
839 if ((r = exec_output_from_string(optarg)) < 0) {
840 log_error("Failed to parse default standard error output setting %s.", optarg);
843 arg_default_std_error = r;
848 if ((r = set_default_unit(optarg)) < 0) {
849 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
856 arg_running_as = SYSTEMD_SYSTEM;
860 arg_running_as = SYSTEMD_USER;
864 arg_action = ACTION_TEST;
868 arg_action = ACTION_VERSION;
871 case ARG_DUMP_CONFIGURATION_ITEMS:
872 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
876 r = optarg ? parse_boolean(optarg) : 1;
878 log_error("Failed to parse dump core boolean %s.", optarg);
884 case ARG_CRASH_SHELL:
885 r = optarg ? parse_boolean(optarg) : 1;
887 log_error("Failed to parse crash shell boolean %s.", optarg);
893 case ARG_CONFIRM_SPAWN:
894 r = optarg ? parse_boolean(optarg) : 1;
896 log_error("Failed to parse confirm spawn boolean %s.", optarg);
899 arg_confirm_spawn = r;
902 case ARG_SHOW_STATUS:
903 r = optarg ? parse_boolean(optarg) : 1;
905 log_error("Failed to parse show status boolean %s.", optarg);
911 case ARG_DESERIALIZE: {
915 r = safe_atoi(optarg, &fd);
916 if (r < 0 || fd < 0) {
917 log_error("Failed to parse deserialize option %s.", optarg);
918 return r < 0 ? r : -EINVAL;
921 fd_cloexec(fd, true);
925 log_error("Failed to open serialization fd: %m");
930 fclose(serialization);
937 case ARG_SWITCHED_ROOT:
938 arg_switched_root = true;
942 arg_action = ACTION_HELP;
946 log_set_max_level(LOG_DEBUG);
952 /* Just to eat away the sysvinit kernel
953 * cmdline args without getopt() error
954 * messages that we'll parse in
955 * parse_proc_cmdline_word() or ignore. */
960 log_error("Unknown option code %c", c);
967 if (optind < argc && getpid() != 1) {
968 /* Hmm, when we aren't run as init system
969 * let's complain about excess arguments */
971 log_error("Excess arguments.");
975 if (detect_container(NULL) > 0) {
978 /* All /proc/cmdline arguments the kernel didn't
979 * understand it passed to us. We're not really
980 * interested in that usually since /proc/cmdline is
981 * more interesting and complete. With one exception:
982 * if we are run in a container /proc/cmdline is not
983 * relevant for the container, hence we rely on argv[]
986 for (a = argv; a < argv + argc; a++) {
987 r = parse_proc_cmdline_word(*a);
989 log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
998 static int help(void) {
1000 printf("%s [OPTIONS...]\n\n"
1001 "Starts up and maintains the system or user services.\n\n"
1002 " -h --help Show this help\n"
1003 " --test Determine startup sequence, dump it and exit\n"
1004 " --dump-configuration-items Dump understood unit configuration items\n"
1005 " --unit=UNIT Set default unit\n"
1006 " --system Run a system instance, even if PID != 1\n"
1007 " --user Run a user instance\n"
1008 " --dump-core[=0|1] Dump core on crash\n"
1009 " --crash-shell[=0|1] Run shell on crash\n"
1010 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
1011 " --show-status[=0|1] Show status updates on the console during bootup\n"
1012 " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
1013 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
1014 " --log-color[=0|1] Highlight important log messages\n"
1015 " --log-location[=0|1] Include code location in log messages\n"
1016 " --default-standard-output= Set default standard output for services\n"
1017 " --default-standard-error= Set default standard error output for services\n",
1018 program_invocation_short_name);
1023 static int version(void) {
1024 puts(PACKAGE_STRING);
1025 puts(SYSTEMD_FEATURES);
1030 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
1039 r = manager_open_serialization(m, &f);
1041 log_error("Failed to create serialization file: %s", strerror(-r));
1045 /* Make sure nothing is really destructed when we shut down */
1047 bus_manager_send_reloading(m, true);
1052 log_error("Failed to allocate fd set: %s", strerror(-r));
1056 r = manager_serialize(m, f, fds, switching_root);
1058 log_error("Failed to serialize state: %s", strerror(-r));
1062 if (fseeko(f, 0, SEEK_SET) < 0) {
1063 log_error("Failed to rewind serialization fd: %m");
1067 r = fd_cloexec(fileno(f), false);
1069 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
1073 r = fdset_cloexec(fds, false);
1075 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
1093 static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1097 assert(saved_rlimit);
1099 /* Save the original RLIMIT_NOFILE so that we can reset it
1100 * later when transitioning from the initrd to the main
1101 * systemd or suchlike. */
1102 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
1103 log_error("Reading RLIMIT_NOFILE failed: %m");
1107 /* Make sure forked processes get the default kernel setting */
1108 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1111 rl = newdup(struct rlimit, saved_rlimit, 1);
1115 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1118 /* Bump up the resource limit for ourselves substantially */
1119 nl.rlim_cur = nl.rlim_max = 64*1024;
1120 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
1122 log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r));
1129 static void test_mtab(void) {
1132 /* Check that /etc/mtab is a symlink */
1134 if (readlink_malloc("/etc/mtab", &p) >= 0) {
1137 b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
1144 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1145 "This is not supported anymore. "
1146 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1149 static void test_usr(void) {
1151 /* Check that /usr is not a separate fs */
1153 if (dir_is_empty("/usr") <= 0)
1156 log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
1157 "Some things will probably break (sometimes even silently) in mysterious ways. "
1158 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1161 static void test_cgroups(void) {
1163 if (access("/proc/cgroups", F_OK) >= 0)
1166 log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
1167 "Systems without control groups are not supported. "
1168 "We will now sleep for 10s, and then continue boot-up. "
1169 "Expect breakage and please do not file bugs. "
1170 "Instead fix your kernel and enable CONFIG_CGROUPS. "
1171 "Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
1176 static int initialize_join_controllers(void) {
1177 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1178 * + "net_prio". We'd like to add "cpuset" to the mix, but
1179 * "cpuset" does't really work for groups with no initialized
1182 arg_join_controllers = new(char**, 3);
1183 if (!arg_join_controllers)
1186 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
1187 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
1188 arg_join_controllers[2] = NULL;
1190 if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
1191 free_join_controllers();
1198 int main(int argc, char *argv[]) {
1200 int r, retval = EXIT_FAILURE;
1201 usec_t before_startup, after_startup;
1202 char timespan[FORMAT_TIMESPAN_MAX];
1204 bool reexecute = false;
1205 const char *shutdown_verb = NULL;
1206 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
1207 dual_timestamp userspace_timestamp = { 0ULL, 0ULL };
1208 dual_timestamp kernel_timestamp = { 0ULL, 0ULL };
1209 dual_timestamp security_start_timestamp = { 0ULL, 0ULL };
1210 dual_timestamp security_finish_timestamp = { 0ULL, 0ULL };
1211 static char systemd[] = "systemd";
1212 bool skip_setup = false;
1214 bool loaded_policy = false;
1215 bool arm_reboot_watchdog = false;
1216 bool queue_default_job = false;
1217 char *switch_root_dir = NULL, *switch_root_init = NULL;
1218 static struct rlimit saved_rlimit_nofile = { 0, 0 };
1220 #ifdef HAVE_SYSV_COMPAT
1221 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
1222 /* This is compatibility support for SysV, where
1223 * calling init as a user is identical to telinit. */
1226 execv(SYSTEMCTL_BINARY_PATH, argv);
1227 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1232 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
1233 dual_timestamp_get(&userspace_timestamp);
1235 /* Determine if this is a reexecution or normal bootup. We do
1236 * the full command line parsing much later, so let's just
1237 * have a quick peek here. */
1238 if (strv_find(argv+1, "--deserialize"))
1241 /* If we have switched root, do all the special setup
1243 if (strv_find(argv+1, "--switched-root"))
1246 /* If we get started via the /sbin/init symlink then we are
1247 called 'init'. After a subsequent reexecution we are then
1248 called 'systemd'. That is confusing, hence let's call us
1249 systemd right-away. */
1250 program_invocation_short_name = systemd;
1251 prctl(PR_SET_NAME, systemd);
1256 log_show_color(isatty(STDERR_FILENO) > 0);
1258 /* Disable the umask logic */
1262 if (getpid() == 1 && detect_container(NULL) <= 0) {
1264 /* Running outside of a container as PID 1 */
1265 arg_running_as = SYSTEMD_SYSTEM;
1267 log_set_target(LOG_TARGET_KMSG);
1271 initrd_timestamp = userspace_timestamp;
1274 mount_setup_early();
1275 dual_timestamp_get(&security_start_timestamp);
1276 if (selinux_setup(&loaded_policy) < 0)
1278 if (ima_setup() < 0)
1280 if (smack_setup() < 0)
1282 dual_timestamp_get(&security_finish_timestamp);
1285 if (label_init(NULL) < 0)
1289 if (hwclock_is_localtime() > 0) {
1292 /* The first-time call to settimeofday() does a time warp in the kernel */
1293 r = hwclock_set_timezone(&min);
1295 log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
1297 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1298 } else if (!in_initrd()) {
1300 * Do dummy first-time call to seal the kernel's time warp magic
1302 * Do not call this this from inside the initrd. The initrd might not
1303 * carry /etc/adjtime with LOCAL, but the real system could be set up
1304 * that way. In such case, we need to delay the time-warp or the sealing
1305 * until we reach the real system.
1307 hwclock_reset_timezone();
1309 /* Tell the kernel our timezone */
1310 r = hwclock_set_timezone(NULL);
1312 log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r));
1316 /* Set the default for later on, but don't actually
1317 * open the logs like this for now. Note that if we
1318 * are transitioning from the initrd there might still
1319 * be journal fd open, and we shouldn't attempt
1320 * opening that before we parsed /proc/cmdline which
1321 * might redirect output elsewhere. */
1322 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1324 } else if (getpid() == 1) {
1325 /* Running inside a container, as PID 1 */
1326 arg_running_as = SYSTEMD_SYSTEM;
1327 log_set_target(LOG_TARGET_CONSOLE);
1330 /* For the later on, see above... */
1331 log_set_target(LOG_TARGET_JOURNAL);
1333 /* clear the kernel timestamp,
1334 * because we are in a container */
1335 kernel_timestamp.monotonic = 0ULL;
1336 kernel_timestamp.realtime = 0ULL;
1339 /* Running as user instance */
1340 arg_running_as = SYSTEMD_USER;
1341 log_set_target(LOG_TARGET_AUTO);
1344 /* clear the kernel timestamp,
1345 * because we are not PID 1 */
1346 kernel_timestamp.monotonic = 0ULL;
1347 kernel_timestamp.realtime = 0ULL;
1350 /* Initialize default unit */
1351 r = set_default_unit(SPECIAL_DEFAULT_TARGET);
1353 log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
1357 r = initialize_join_controllers();
1361 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1362 * /proc/$PID/fd is available. */
1363 if (getpid() == 1) {
1364 r = mount_setup(loaded_policy);
1369 /* Reset all signal handlers. */
1370 assert_se(reset_all_signal_handlers() == 0);
1372 ignore_signals(SIGNALS_IGNORE, -1);
1374 if (parse_config_file() < 0)
1377 if (arg_running_as == SYSTEMD_SYSTEM)
1378 if (parse_proc_cmdline() < 0)
1381 log_parse_environment();
1383 if (parse_argv(argc, argv) < 0)
1386 if (arg_action == ACTION_TEST &&
1388 log_error("Don't run test mode as root.");
1392 if (arg_running_as == SYSTEMD_USER &&
1393 arg_action == ACTION_RUN &&
1395 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1399 if (arg_running_as == SYSTEMD_SYSTEM &&
1400 arg_action == ACTION_RUN &&
1401 running_in_chroot() > 0) {
1402 log_error("Cannot be run in a chroot() environment.");
1406 if (arg_action == ACTION_HELP) {
1409 } else if (arg_action == ACTION_VERSION) {
1412 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
1413 unit_dump_config_items(stdout);
1414 retval = EXIT_SUCCESS;
1416 } else if (arg_action == ACTION_DONE) {
1417 retval = EXIT_SUCCESS;
1421 if (arg_running_as == SYSTEMD_USER &&
1422 !getenv("XDG_RUNTIME_DIR")) {
1423 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1427 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
1429 /* Close logging fds, in order not to confuse fdset below */
1432 /* Remember open file descriptors for later deserialization */
1433 r = fdset_new_fill(&fds);
1435 log_error("Failed to allocate fd set: %s", strerror(-r));
1438 fdset_cloexec(fds, true);
1441 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
1443 if (arg_running_as == SYSTEMD_SYSTEM)
1444 /* Become a session leader if we aren't one yet. */
1447 /* Move out of the way, so that we won't block unmounts */
1448 assert_se(chdir("/") == 0);
1450 /* Reset the console, but only if this is really init and we
1451 * are freshly booted */
1452 if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN)
1453 console_setup(getpid() == 1 && !skip_setup);
1455 /* Open the logging devices, if possible and necessary */
1458 /* Make sure we leave a core dump without panicing the
1460 if (getpid() == 1) {
1461 install_crash_handler();
1463 r = mount_cgroup_controllers(arg_join_controllers);
1468 if (arg_running_as == SYSTEMD_SYSTEM) {
1469 const char *virtualization = NULL;
1471 log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES ")");
1473 detect_virtualization(&virtualization);
1475 log_info("Detected virtualization '%s'.", virtualization);
1478 log_info("Running in initial RAM disk.");
1481 log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")");
1483 if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
1484 if (arg_show_status || plymouth_running())
1499 if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
1500 watchdog_set_timeout(&arg_runtime_watchdog);
1502 if (arg_timer_slack_nsec != (nsec_t) -1)
1503 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1504 log_error("Failed to adjust timer slack: %m");
1506 if (arg_capability_bounding_set_drop) {
1507 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
1509 log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
1512 r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
1514 log_error("Failed to drop capability bounding set: %s", strerror(-r));
1519 if (arg_running_as == SYSTEMD_USER) {
1520 /* Become reaper of our children */
1521 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
1522 log_warning("Failed to make us a subreaper: %m");
1523 if (errno == EINVAL)
1524 log_info("Perhaps the kernel version is too old (< 3.4?)");
1528 if (arg_running_as == SYSTEMD_SYSTEM)
1529 bump_rlimit_nofile(&saved_rlimit_nofile);
1531 r = manager_new(arg_running_as, !!serialization, &m);
1533 log_error("Failed to allocate manager object: %s", strerror(-r));
1537 m->confirm_spawn = arg_confirm_spawn;
1538 m->default_std_output = arg_default_std_output;
1539 m->default_std_error = arg_default_std_error;
1540 m->default_restart_usec = arg_default_restart_usec;
1541 m->default_timeout_start_usec = arg_default_timeout_start_usec;
1542 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
1543 m->default_start_limit_interval = arg_default_start_limit_interval;
1544 m->default_start_limit_burst = arg_default_start_limit_burst;
1545 m->runtime_watchdog = arg_runtime_watchdog;
1546 m->shutdown_watchdog = arg_shutdown_watchdog;
1547 m->userspace_timestamp = userspace_timestamp;
1548 m->kernel_timestamp = kernel_timestamp;
1549 m->initrd_timestamp = initrd_timestamp;
1550 m->security_start_timestamp = security_start_timestamp;
1551 m->security_finish_timestamp = security_finish_timestamp;
1553 manager_set_default_rlimits(m, arg_default_rlimit);
1555 if (arg_default_environment)
1556 manager_environment_add(m, NULL, arg_default_environment);
1558 manager_set_show_status(m, arg_show_status);
1560 /* Remember whether we should queue the default job */
1561 queue_default_job = !serialization || arg_switched_root;
1563 before_startup = now(CLOCK_MONOTONIC);
1565 r = manager_startup(m, serialization, fds);
1567 log_error("Failed to fully start up daemon: %s", strerror(-r));
1569 /* This will close all file descriptors that were opened, but
1570 * not claimed by any unit. */
1574 if (serialization) {
1575 fclose(serialization);
1576 serialization = NULL;
1579 if (queue_default_job) {
1580 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1581 Unit *target = NULL;
1582 Job *default_unit_job;
1584 log_debug("Activating default unit: %s", arg_default_unit);
1586 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
1588 log_error("Failed to load default target: %s", bus_error_message(&error, r));
1589 else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
1590 log_error("Failed to load default target: %s", strerror(-target->load_error));
1591 else if (target->load_state == UNIT_MASKED)
1592 log_error("Default target masked.");
1594 if (!target || target->load_state != UNIT_LOADED) {
1595 log_info("Trying to load rescue target...");
1597 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1599 log_error("Failed to load rescue target: %s", bus_error_message(&error, r));
1601 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
1602 log_error("Failed to load rescue target: %s", strerror(-target->load_error));
1604 } else if (target->load_state == UNIT_MASKED) {
1605 log_error("Rescue target masked.");
1610 assert(target->load_state == UNIT_LOADED);
1612 if (arg_action == ACTION_TEST) {
1613 printf("-> By units:\n");
1614 manager_dump_units(m, stdout, "\t");
1617 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
1619 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1621 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
1623 log_error("Failed to start default target: %s", bus_error_message(&error, r));
1627 log_error("Failed to isolate default target: %s", bus_error_message(&error, r));
1631 m->default_unit_job_id = default_unit_job->id;
1633 after_startup = now(CLOCK_MONOTONIC);
1634 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1635 "Loaded units and determined initial transaction in %s.",
1636 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 0));
1638 if (arg_action == ACTION_TEST) {
1639 printf("-> By jobs:\n");
1640 manager_dump_jobs(m, stdout, "\t");
1641 retval = EXIT_SUCCESS;
1647 r = manager_loop(m);
1649 log_error("Failed to run mainloop: %s", strerror(-r));
1653 switch (m->exit_code) {
1656 retval = EXIT_SUCCESS;
1660 case MANAGER_RELOAD:
1661 log_info("Reloading.");
1662 r = manager_reload(m);
1664 log_error("Failed to reload: %s", strerror(-r));
1667 case MANAGER_REEXECUTE:
1669 if (prepare_reexecute(m, &serialization, &fds, false) < 0)
1673 log_notice("Reexecuting.");
1676 case MANAGER_SWITCH_ROOT:
1677 /* Steal the switch root parameters */
1678 switch_root_dir = m->switch_root;
1679 switch_root_init = m->switch_root_init;
1680 m->switch_root = m->switch_root_init = NULL;
1682 if (!switch_root_init)
1683 if (prepare_reexecute(m, &serialization, &fds, true) < 0)
1687 log_notice("Switching root.");
1690 case MANAGER_REBOOT:
1691 case MANAGER_POWEROFF:
1693 case MANAGER_KEXEC: {
1694 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1695 [MANAGER_REBOOT] = "reboot",
1696 [MANAGER_POWEROFF] = "poweroff",
1697 [MANAGER_HALT] = "halt",
1698 [MANAGER_KEXEC] = "kexec"
1701 assert_se(shutdown_verb = table[m->exit_code]);
1702 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
1704 log_notice("Shutting down.");
1709 assert_not_reached("Unknown exit code.");
1717 for (j = 0; j < RLIMIT_NLIMITS; j++)
1718 free(arg_default_rlimit[j]);
1720 free(arg_default_unit);
1721 free_join_controllers();
1727 unsigned i, args_size;
1729 /* Close and disarm the watchdog, so that the new
1730 * instance can reinitialize it, but doesn't get
1731 * rebooted while we do that */
1732 watchdog_close(true);
1734 /* Reset the RLIMIT_NOFILE to the kernel default, so
1735 * that the new systemd can pass the kernel default to
1736 * its child processes */
1737 if (saved_rlimit_nofile.rlim_cur > 0)
1738 setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
1740 if (switch_root_dir) {
1741 /* Kill all remaining processes from the
1742 * initrd, but don't wait for them, so that we
1743 * can handle the SIGCHLD for them after
1745 broadcast_signal(SIGTERM, false);
1747 /* And switch root */
1748 r = switch_root(switch_root_dir);
1750 log_error("Failed to switch root, ignoring: %s", strerror(-r));
1753 args_size = MAX(6, argc+1);
1754 args = newa(const char*, args_size);
1756 if (!switch_root_init) {
1759 /* First try to spawn ourselves with the right
1760 * path, and with full serialization. We do
1761 * this only if the user didn't specify an
1762 * explicit init to spawn. */
1764 assert(serialization);
1767 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1771 args[i++] = SYSTEMD_BINARY_PATH;
1772 if (switch_root_dir)
1773 args[i++] = "--switched-root";
1774 args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
1775 args[i++] = "--deserialize";
1779 /* do not pass along the environment we inherit from the kernel or initrd */
1780 if (switch_root_dir)
1783 assert(i <= args_size);
1784 execv(args[0], (char* const*) args);
1787 /* Try the fallback, if there is any, without any
1788 * serialization. We pass the original argv[] and
1789 * envp[]. (Well, modulo the ordering changes due to
1790 * getopt() in argv[], and some cleanups in envp[],
1791 * but let's hope that doesn't matter.) */
1793 if (serialization) {
1794 fclose(serialization);
1795 serialization = NULL;
1803 /* Reopen the console */
1804 make_console_stdio();
1806 for (j = 1, i = 1; j < argc; j++)
1807 args[i++] = argv[j];
1809 assert(i <= args_size);
1811 if (switch_root_init) {
1812 args[0] = switch_root_init;
1813 execv(args[0], (char* const*) args);
1814 log_warning("Failed to execute configured init, trying fallback: %m");
1817 args[0] = "/sbin/init";
1818 execv(args[0], (char* const*) args);
1820 if (errno == ENOENT) {
1821 log_warning("No /sbin/init, trying fallback");
1823 args[0] = "/bin/sh";
1825 execv(args[0], (char* const*) args);
1826 log_error("Failed to execute /bin/sh, giving up: %m");
1828 log_warning("Failed to execute /sbin/init, giving up: %m");
1832 fclose(serialization);
1837 #ifdef HAVE_VALGRIND_VALGRIND_H
1838 /* If we are PID 1 and running under valgrind, then let's exit
1839 * here explicitly. valgrind will only generate nice output on
1840 * exit(), not on exec(), hence let's do the former not the
1842 if (getpid() == 1 && RUNNING_ON_VALGRIND)
1846 if (shutdown_verb) {
1847 const char * command_line[] = {
1848 SYSTEMD_SHUTDOWN_BINARY_PATH,
1854 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
1857 /* If we reboot let's set the shutdown
1858 * watchdog and tell the shutdown binary to
1859 * repeatedly ping it */
1860 watchdog_set_timeout(&arg_shutdown_watchdog);
1861 watchdog_close(false);
1863 /* Tell the binary how often to ping */
1864 snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog);
1867 env_block = strv_append(environ, e);
1869 env_block = strv_copy(environ);
1870 watchdog_close(true);
1873 /* Avoid the creation of new processes forked by the
1874 * kernel; at this point, we will not listen to the
1876 if (detect_container(NULL) <= 0)
1877 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1879 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1881 log_error("Failed to execute shutdown binary, freezing: %m");