main.c revision 31c885e9ae53f4b88a36452c4ca10643fdd0fd06
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen This file is part of systemd.
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen Copyright 2010 Lennart Poettering
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen systemd is free software; you can redistribute it and/or modify it
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen under the terms of the GNU Lesser General Public License as published by
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen the Free Software Foundation; either version 2.1 of the License, or
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen (at your option) any later version.
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen systemd is distributed in the hope that it will be useful, but
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen WITHOUT ANY WARRANTY; without even the implied warranty of
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen Lesser General Public License for more details.
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen You should have received a copy of the GNU Lesser General Public License
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen along with systemd; If not, see <http://www.gnu.org/licenses/>.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic bool arg_dump_core = true;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic bool arg_crash_shell = false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic bool arg_confirm_spawn = false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic bool arg_show_status = true;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic bool arg_switched_root = false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic char ***arg_join_controllers = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic char **arg_default_environment = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic uint64_t arg_capability_bounding_set_drop = 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic nsec_t arg_timer_slack_nsec = (nsec_t) -1;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Pass this on immediately, if this is not PID 1 */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* We want to wait for the core process, hence let's enable SIGCHLD */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering else if (pid == 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Enable default signal handler for core dump */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Don't limit the core dump size */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Just to be sure... */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Raise the signal again */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert_not_reached("We shouldn't be here...");
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Order things nicely. */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_info("Executing crash shell in 10s...");
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Let the kernel reap children for us */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to fork off crash shell: %m");
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering else if (pid == 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic void install_crash_handler(void) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* If we are init, we connect stdin/stdout/stderr to /dev/null
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering * and make sure we don't have a controlling tty. */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* We don't want to force text mode.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering * plymouth may be showing pictures already from initrd. */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to reset /dev/console: %s", strerror(-r));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int set_default_unit(const char *u) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int parse_proc_cmdline_word(const char *word) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering static const char * const rlmap[] = {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "rd.systemd.unit=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.log_target=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (log_set_target_from_string(word + 19) < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse log target %s. Ignoring.", word + 19);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.log_level=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (log_set_max_level_from_string(word + 18) < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse log level %s. Ignoring.", word + 18);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.log_color=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (log_show_color_from_string(word + 18) < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.log_location=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (log_show_location_from_string(word + 21) < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.dump_core=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.crash_shell=")) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen } else if (startswith(word, "systemd.confirm_spawn=")) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.crash_chvt=")) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.show_status=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen } else if (startswith(word, "systemd.default_standard_output=")) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if ((r = exec_output_from_string(word + 32)) < 0)
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen } else if (startswith(word, "systemd.default_standard_error=")) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if ((r = exec_output_from_string(word + 31)) < 0)
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen } else if (startswith(word, "systemd.setenv=")) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering env = strv_env_set(arg_default_environment, cenv);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering } else if (startswith(word, "systemd.") ||
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering (in_initrd() && startswith(word, "rd.systemd."))) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering const char *c;
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen /* Ignore systemd.journald.xyz and friends */
36f822c4bd077f9121757e24b6516e5c7ada63b5Zbigniew Jędrzejewski-Szmek if (c[strcspn(c, ".=")] != '.') {
36f822c4bd077f9121757e24b6516e5c7ada63b5Zbigniew Jędrzejewski-Szmek log_warning("Unknown kernel switch %s. Ignoring.", word);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.unit=UNIT Default unit to start\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "rd.systemd.unit=UNIT Default unit to start when run in initrd\n"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "systemd.dump_core=0|1 Dump core on crash\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.crash_shell=0|1 Run shell on crash\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.crash_chvt=N Change to VT #N on crash\n"
c92e531c82a9815ec349aa1bf31236b86b2d5311Lennart Poettering "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
c92e531c82a9815ec349aa1bf31236b86b2d5311Lennart Poettering "systemd.show_status=0|1 Show status updates on the console during bootup\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen " Log target\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.log_level=LEVEL Log level\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen "systemd.log_color=0|1 Highlight important log messages\n"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "systemd.log_location=0|1 Include code location in log messages\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " Set default log output for services\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen " Set default log error output for services\n"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen /* Log to kmsg, the journal socket will fill up before the
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen * journal is started and tools running during that time
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen * will block with every log message for for 60 seconds,
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen * before they give up. */
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen } else if (!in_initrd()) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* SysV compatibility */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#define DEFINE_SETTER(name, func, descr) \
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen const char *lvalue, \
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen const char *rvalue, \
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_syntax(unit, LOG_ERR, filename, line, -r, \
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringDEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringDEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringDEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringDEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
096b6773886bd7a0c8c97aa684b0b67dfae58355Lennart Poetteringstatic int config_parse_cpu_affinity2(const char *unit,
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen unsigned ncpus = 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!(t = strndup(w, l)))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_syntax(unit, LOG_ERR, filename, line, -r,
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning_unit(unit, "Failed to set CPU affinity: %m");
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersenstatic void strv_free_free(char ***l) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen for (i = l; *i; i++)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic void free_join_controllers(void) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int config_parse_join_controllers(const char *unit,
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering unsigned n = 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering FOREACH_WORD_QUOTED(w, length, rvalue, state) {
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen char *s, **l;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering for (a = arg_join_controllers; *a; a++) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic int parse_config_file(void) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "LogLevel", config_parse_level2, 0, NULL },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "LogTarget", config_parse_target, 0, NULL },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "LogColor", config_parse_color, 0, NULL },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "LogLocation", config_parse_location, 0, NULL },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_warning("Failed to open configuration file '%s': %m", fn);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, false, NULL);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse configuration file: %s", strerror(-r));
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersenstatic int parse_proc_cmdline(void) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Don't read /proc/cmdline if we are in a container, since
091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen * that is only relevant for the host system */
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = read_one_line_file("/proc/cmdline", &line);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int parse_argv(int argc, char *argv[]) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "log-target", required_argument, NULL, ARG_LOG_TARGET },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "unit", required_argument, NULL, ARG_UNIT },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "system", no_argument, NULL, ARG_SYSTEM },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "version", no_argument, NULL, ARG_VERSION },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "introspect", optional_argument, NULL, ARG_INTROSPECT },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = log_set_max_level_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse log level %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = log_set_target_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse log target %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = log_show_color_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse log color setting %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = log_show_location_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse log location setting %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = exec_output_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse default standard output setting %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = exec_output_from_string(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse default standard error output setting %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if ((r = set_default_unit(optarg)) < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to parse dump core boolean %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse crash shell boolean %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse confirm spawn boolean %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse show status boolean %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0 || fd < 0) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to parse deserialize option %s.", optarg);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r < 0 ? r : -EINVAL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_error("Failed to open serialization fd: %m");
e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering const char * const * i = NULL;
e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering for (i = bus_interface_table; *i; i += 2)
e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Unknown interface %s.", optarg);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Just to eat away the sysvinit kernel
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * cmdline args without getopt() error
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * messages that we'll parse in
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * parse_proc_cmdline_word() or ignore. */
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Hmm, when we aren't run as init system
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * let's complain about excess arguments */
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* All /proc/cmdline arguments the kernel didn't
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * understand it passed to us. We're not really
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * interested in that usually since /proc/cmdline is
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * more interesting and complete. With one exception:
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * if we are run in a container /proc/cmdline is not
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * relevant for the container, hence we rely on argv[]
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if ((r = parse_proc_cmdline_word(*a)) < 0) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic int help(void) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering "Starts up and maintains the system or user services.\n\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " -h --help Show this help\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --test Determine startup sequence, dump it and exit\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --dump-configuration-items Dump understood unit configuration items\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --introspect[=INTERFACE] Extract D-Bus interface data\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --unit=UNIT Set default unit\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --system Run a system instance, even if PID != 1\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --user Run a user instance\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --dump-core[=0|1] Dump core on crash\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --crash-shell[=0|1] Run shell on crash\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --show-status[=0|1] Show status updates on the console during bootup\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --log-color[=0|1] Highlight important log messages\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --log-location[=0|1] Include code location in log messages\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --default-standard-output= Set default standard output for services\n"
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering " --default-standard-error= Set default standard error output for services\n",
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic int version(void) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to create serialization file: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Make sure nothing is really destructed when we shut down */
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to allocate fd set: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = manager_serialize(m, f, fds, switching_root);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to serialize state: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to rewind serialization fd: %m");
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Save the original RLIMIT_NOFILE so that we can reset it
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * later when transitioning from the initrd to the main
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering * systemd or suchlike. */
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_error("Reading RLIMIT_NOFILE failed: %m");
if (!rl)
return log_oom();
static void test_mtab(void) {
free(p);
"Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
static void test_usr(void) {
log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
"Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
static void test_cgroups(void) {
"Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
static int initialize_join_controllers(void) {
if (!arg_join_controllers)
return -ENOMEM;
return -ENOMEM;
bool reexecute = false;
bool skip_setup = false;
bool loaded_policy = false;
bool arm_reboot_watchdog = false;
bool queue_default_job = false;
#ifdef HAVE_SYSV_COMPAT
skip_setup = true;
skip_setup = false;
log_open();
if (in_initrd())
if (!skip_setup) {
goto finish;
if (ima_setup() < 0)
goto finish;
if (smack_setup() < 0)
goto finish;
goto finish;
if (!skip_setup) {
if (hwclock_is_localtime() > 0) {
int min;
} else if (!in_initrd()) {
log_open();
log_open();
goto finish;
r = initialize_join_controllers();
goto finish;
goto finish;
if (parse_config_file() < 0)
goto finish;
if (parse_proc_cmdline() < 0)
goto finish;
goto finish;
geteuid() == 0) {
goto finish;
sd_booted() <= 0) {
goto finish;
running_in_chroot() > 0) {
goto finish;
goto finish;
goto finish;
goto finish;
goto finish;
log_close();
goto finish;
if (serialization)
setsid();
umask(0);
log_open();
goto finish;
if (virtualization)
if (in_initrd())
#ifdef HAVE_KMOD
kmod_setup();
test_mtab();
test_usr();
test_cgroups();
goto finish;
goto finish;
goto finish;
if (serialization) {
if (queue_default_job) {
goto finish;
goto finish;
goto finish;
if (r == -EPERM) {
goto finish;
goto finish;
goto finish;
r = manager_loop(m);
goto finish;
switch (m->exit_code) {
case MANAGER_EXIT:
goto finish;
case MANAGER_RELOAD:
r = manager_reload(m);
case MANAGER_REEXECUTE:
goto finish;
reexecute = true;
goto finish;
case MANAGER_SWITCH_ROOT:
if (!switch_root_init)
goto finish;
reexecute = true;
goto finish;
case MANAGER_REBOOT:
case MANAGER_POWEROFF:
case MANAGER_HALT:
case MANAGER_KEXEC: {
goto finish;
manager_free(m);
for (j = 0; j < RLIMIT_NLIMITS; j++)
label_finish();
if (reexecute) {
const char **args;
unsigned i, args_size;
watchdog_close(true);
if (switch_root_dir) {
if (!switch_root_init) {
if (switch_root_dir)
if (switch_root_dir)
clearenv();
if (serialization) {
if (fds) {
if (switch_root_init) {
if (serialization)
if (fds)
if (shutdown_verb) {
const char * command_line[] = {
char **env_block;
watchdog_close(false);
char_array_0(e);
watchdog_close(true);
freeze();
return retval;