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-rw-r--r--src/core/main.c1686
1 files changed, 1686 insertions, 0 deletions
diff --git a/src/core/main.c b/src/core/main.c
new file mode 100644
index 0000000000..4c2be261f5
--- /dev/null
+++ b/src/core/main.c
@@ -0,0 +1,1686 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <dbus/dbus.h>
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <getopt.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+#include <sys/prctl.h>
+
+#include "manager.h"
+#include "log.h"
+#include "mount-setup.h"
+#include "hostname-setup.h"
+#include "loopback-setup.h"
+#include "kmod-setup.h"
+#include "locale-setup.h"
+#include "selinux-setup.h"
+#include "ima-setup.h"
+#include "machine-id-util.h"
+#include "load-fragment.h"
+#include "fdset.h"
+#include "special.h"
+#include "conf-parser.h"
+#include "bus-errors.h"
+#include "missing.h"
+#include "label.h"
+#include "build.h"
+#include "strv.h"
+#include "def.h"
+#include "virt.h"
+#include "watchdog.h"
+
+static enum {
+ ACTION_RUN,
+ ACTION_HELP,
+ ACTION_TEST,
+ ACTION_DUMP_CONFIGURATION_ITEMS,
+ ACTION_DONE
+} arg_action = ACTION_RUN;
+
+static char *arg_default_unit = NULL;
+static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
+
+static bool arg_dump_core = true;
+static bool arg_crash_shell = false;
+static int arg_crash_chvt = -1;
+static bool arg_confirm_spawn = false;
+static bool arg_show_status = true;
+#ifdef HAVE_SYSV_COMPAT
+static bool arg_sysv_console = true;
+#endif
+static bool arg_mount_auto = true;
+static bool arg_swap_auto = true;
+static char **arg_default_controllers = NULL;
+static char ***arg_join_controllers = NULL;
+static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
+static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
+static usec_t arg_runtime_watchdog = 0;
+static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
+
+static FILE* serialization = NULL;
+
+static void nop_handler(int sig) {
+}
+
+_noreturn_ static void crash(int sig) {
+
+ if (!arg_dump_core)
+ log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
+ else {
+ struct sigaction sa;
+ pid_t pid;
+
+ /* We want to wait for the core process, hence let's enable SIGCHLD */
+ zero(sa);
+ sa.sa_handler = nop_handler;
+ sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
+ assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
+
+ if ((pid = fork()) < 0)
+ log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
+
+ else if (pid == 0) {
+ struct rlimit rl;
+
+ /* Enable default signal handler for core dump */
+ zero(sa);
+ sa.sa_handler = SIG_DFL;
+ assert_se(sigaction(sig, &sa, NULL) == 0);
+
+ /* Don't limit the core dump size */
+ zero(rl);
+ rl.rlim_cur = RLIM_INFINITY;
+ rl.rlim_max = RLIM_INFINITY;
+ setrlimit(RLIMIT_CORE, &rl);
+
+ /* Just to be sure... */
+ assert_se(chdir("/") == 0);
+
+ /* Raise the signal again */
+ raise(sig);
+
+ assert_not_reached("We shouldn't be here...");
+ _exit(1);
+
+ } else {
+ siginfo_t status;
+ int r;
+
+ /* Order things nicely. */
+ if ((r = wait_for_terminate(pid, &status)) < 0)
+ log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
+ else if (status.si_code != CLD_DUMPED)
+ log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
+ else
+ log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
+ }
+ }
+
+ if (arg_crash_chvt)
+ chvt(arg_crash_chvt);
+
+ if (arg_crash_shell) {
+ struct sigaction sa;
+ pid_t pid;
+
+ log_info("Executing crash shell in 10s...");
+ sleep(10);
+
+ /* Let the kernel reap children for us */
+ zero(sa);
+ sa.sa_handler = SIG_IGN;
+ sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
+ assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
+
+ if ((pid = fork()) < 0)
+ log_error("Failed to fork off crash shell: %s", strerror(errno));
+ else if (pid == 0) {
+ int fd, r;
+
+ if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
+ log_error("Failed to acquire terminal: %s", strerror(-fd));
+ else if ((r = make_stdio(fd)) < 0)
+ log_error("Failed to duplicate terminal fd: %s", strerror(-r));
+
+ execl("/bin/sh", "/bin/sh", NULL);
+
+ log_error("execl() failed: %s", strerror(errno));
+ _exit(1);
+ }
+
+ log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid);
+ }
+
+ log_info("Freezing execution.");
+ freeze();
+}
+
+static void install_crash_handler(void) {
+ struct sigaction sa;
+
+ zero(sa);
+
+ sa.sa_handler = crash;
+ sa.sa_flags = SA_NODEFER;
+
+ sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
+}
+
+static int console_setup(bool do_reset) {
+ int tty_fd, r;
+
+ /* If we are init, we connect stdin/stdout/stderr to /dev/null
+ * and make sure we don't have a controlling tty. */
+
+ release_terminal();
+
+ if (!do_reset)
+ return 0;
+
+ tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
+ if (tty_fd < 0) {
+ log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
+ return -tty_fd;
+ }
+
+ /* We don't want to force text mode.
+ * plymouth may be showing pictures already from initrd. */
+ r = reset_terminal_fd(tty_fd, false);
+ if (r < 0)
+ log_error("Failed to reset /dev/console: %s", strerror(-r));
+
+ close_nointr_nofail(tty_fd);
+ return r;
+}
+
+static int set_default_unit(const char *u) {
+ char *c;
+
+ assert(u);
+
+ if (!(c = strdup(u)))
+ return -ENOMEM;
+
+ free(arg_default_unit);
+ arg_default_unit = c;
+ return 0;
+}
+
+static int parse_proc_cmdline_word(const char *word) {
+
+ static const char * const rlmap[] = {
+ "emergency", SPECIAL_EMERGENCY_TARGET,
+ "-b", SPECIAL_EMERGENCY_TARGET,
+ "single", SPECIAL_RESCUE_TARGET,
+ "-s", SPECIAL_RESCUE_TARGET,
+ "s", SPECIAL_RESCUE_TARGET,
+ "S", SPECIAL_RESCUE_TARGET,
+ "1", SPECIAL_RESCUE_TARGET,
+ "2", SPECIAL_RUNLEVEL2_TARGET,
+ "3", SPECIAL_RUNLEVEL3_TARGET,
+ "4", SPECIAL_RUNLEVEL4_TARGET,
+ "5", SPECIAL_RUNLEVEL5_TARGET,
+ };
+
+ assert(word);
+
+ if (startswith(word, "systemd.unit="))
+ return set_default_unit(word + 13);
+
+ else if (startswith(word, "systemd.log_target=")) {
+
+ if (log_set_target_from_string(word + 19) < 0)
+ log_warning("Failed to parse log target %s. Ignoring.", word + 19);
+
+ } else if (startswith(word, "systemd.log_level=")) {
+
+ if (log_set_max_level_from_string(word + 18) < 0)
+ log_warning("Failed to parse log level %s. Ignoring.", word + 18);
+
+ } else if (startswith(word, "systemd.log_color=")) {
+
+ if (log_show_color_from_string(word + 18) < 0)
+ log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
+
+ } else if (startswith(word, "systemd.log_location=")) {
+
+ if (log_show_location_from_string(word + 21) < 0)
+ log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
+
+ } else if (startswith(word, "systemd.dump_core=")) {
+ int r;
+
+ if ((r = parse_boolean(word + 18)) < 0)
+ log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18);
+ else
+ arg_dump_core = r;
+
+ } else if (startswith(word, "systemd.crash_shell=")) {
+ int r;
+
+ if ((r = parse_boolean(word + 20)) < 0)
+ log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20);
+ else
+ arg_crash_shell = r;
+
+ } else if (startswith(word, "systemd.confirm_spawn=")) {
+ int r;
+
+ if ((r = parse_boolean(word + 22)) < 0)
+ log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22);
+ else
+ arg_confirm_spawn = r;
+
+ } else if (startswith(word, "systemd.crash_chvt=")) {
+ int k;
+
+ if (safe_atoi(word + 19, &k) < 0)
+ log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19);
+ else
+ arg_crash_chvt = k;
+
+ } else if (startswith(word, "systemd.show_status=")) {
+ int r;
+
+ if ((r = parse_boolean(word + 20)) < 0)
+ log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
+ else
+ arg_show_status = r;
+ } else if (startswith(word, "systemd.default_standard_output=")) {
+ int r;
+
+ if ((r = exec_output_from_string(word + 32)) < 0)
+ log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32);
+ else
+ arg_default_std_output = r;
+ } else if (startswith(word, "systemd.default_standard_error=")) {
+ int r;
+
+ if ((r = exec_output_from_string(word + 31)) < 0)
+ log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31);
+ else
+ arg_default_std_error = r;
+ } else if (startswith(word, "systemd.setenv=")) {
+ char *cenv, *eq;
+ int r;
+
+ cenv = strdup(word + 15);
+ if (!cenv)
+ return -ENOMEM;
+
+ eq = strchr(cenv, '=');
+ if (!eq) {
+ r = unsetenv(cenv);
+ if (r < 0)
+ log_warning("unsetenv failed %s. Ignoring.", strerror(errno));
+ } else {
+ *eq = 0;
+ r = setenv(cenv, eq + 1, 1);
+ if (r < 0)
+ log_warning("setenv failed %s. Ignoring.", strerror(errno));
+ }
+ free(cenv);
+#ifdef HAVE_SYSV_COMPAT
+ } else if (startswith(word, "systemd.sysv_console=")) {
+ int r;
+
+ if ((r = parse_boolean(word + 21)) < 0)
+ log_warning("Failed to parse SysV console switch %s. Ignoring.", word + 20);
+ else
+ arg_sysv_console = r;
+#endif
+
+ } else if (startswith(word, "systemd.")) {
+
+ log_warning("Unknown kernel switch %s. Ignoring.", word);
+
+ log_info("Supported kernel switches:\n"
+ "systemd.unit=UNIT Default unit to start\n"
+ "systemd.dump_core=0|1 Dump core on crash\n"
+ "systemd.crash_shell=0|1 Run shell on crash\n"
+ "systemd.crash_chvt=N Change to VT #N on crash\n"
+ "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
+ "systemd.show_status=0|1 Show status updates on the console during bootup\n"
+#ifdef HAVE_SYSV_COMPAT
+ "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
+#endif
+ "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
+ " Log target\n"
+ "systemd.log_level=LEVEL Log level\n"
+ "systemd.log_color=0|1 Highlight important log messages\n"
+ "systemd.log_location=0|1 Include code location in log messages\n"
+ "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
+ " Set default log output for services\n"
+ "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
+ " Set default log error output for services\n");
+
+ } else if (streq(word, "quiet")) {
+ arg_show_status = false;
+#ifdef HAVE_SYSV_COMPAT
+ arg_sysv_console = false;
+#endif
+ } else {
+ unsigned i;
+
+ /* SysV compatibility */
+ for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
+ if (streq(word, rlmap[i]))
+ return set_default_unit(rlmap[i+1]);
+ }
+
+ return 0;
+}
+
+static int config_parse_level2(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ log_set_max_level_from_string(rvalue);
+ return 0;
+}
+
+static int config_parse_target(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ log_set_target_from_string(rvalue);
+ return 0;
+}
+
+static int config_parse_color(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ log_show_color_from_string(rvalue);
+ return 0;
+}
+
+static int config_parse_location(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ log_show_location_from_string(rvalue);
+ return 0;
+}
+
+static int config_parse_cpu_affinity2(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char *w;
+ size_t l;
+ char *state;
+ cpu_set_t *c = NULL;
+ unsigned ncpus = 0;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ FOREACH_WORD_QUOTED(w, l, rvalue, state) {
+ char *t;
+ int r;
+ unsigned cpu;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ r = safe_atou(t, &cpu);
+ free(t);
+
+ if (!c)
+ if (!(c = cpu_set_malloc(&ncpus)))
+ return -ENOMEM;
+
+ if (r < 0 || cpu >= ncpus) {
+ log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
+ CPU_FREE(c);
+ return -EBADMSG;
+ }
+
+ CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
+ }
+
+ if (c) {
+ if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
+ log_warning("Failed to set CPU affinity: %m");
+
+ CPU_FREE(c);
+ }
+
+ return 0;
+}
+
+static void strv_free_free(char ***l) {
+ char ***i;
+
+ if (!l)
+ return;
+
+ for (i = l; *i; i++)
+ strv_free(*i);
+
+ free(l);
+}
+
+static void free_join_controllers(void) {
+ if (!arg_join_controllers)
+ return;
+
+ strv_free_free(arg_join_controllers);
+ arg_join_controllers = NULL;
+}
+
+static int config_parse_join_controllers(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ unsigned n = 0;
+ char *state, *w;
+ size_t length;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ free_join_controllers();
+
+ FOREACH_WORD_QUOTED(w, length, rvalue, state) {
+ char *s, **l;
+
+ s = strndup(w, length);
+ if (!s)
+ return -ENOMEM;
+
+ l = strv_split(s, ",");
+ free(s);
+
+ strv_uniq(l);
+
+ if (strv_length(l) <= 1) {
+ strv_free(l);
+ continue;
+ }
+
+ if (!arg_join_controllers) {
+ arg_join_controllers = new(char**, 2);
+ if (!arg_join_controllers) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+
+ arg_join_controllers[0] = l;
+ arg_join_controllers[1] = NULL;
+
+ n = 1;
+ } else {
+ char ***a;
+ char ***t;
+
+ t = new0(char**, n+2);
+ if (!t) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+
+ n = 0;
+
+ for (a = arg_join_controllers; *a; a++) {
+
+ if (strv_overlap(*a, l)) {
+ char **c;
+
+ c = strv_merge(*a, l);
+ if (!c) {
+ strv_free(l);
+ strv_free_free(t);
+ return -ENOMEM;
+ }
+
+ strv_free(l);
+ l = c;
+ } else {
+ char **c;
+
+ c = strv_copy(*a);
+ if (!c) {
+ strv_free(l);
+ strv_free_free(t);
+ return -ENOMEM;
+ }
+
+ t[n++] = c;
+ }
+ }
+
+ t[n++] = strv_uniq(l);
+
+ strv_free_free(arg_join_controllers);
+ arg_join_controllers = t;
+ }
+ }
+
+ return 0;
+}
+
+static int parse_config_file(void) {
+
+ const ConfigTableItem items[] = {
+ { "Manager", "LogLevel", config_parse_level2, 0, NULL },
+ { "Manager", "LogTarget", config_parse_target, 0, NULL },
+ { "Manager", "LogColor", config_parse_color, 0, NULL },
+ { "Manager", "LogLocation", config_parse_location, 0, NULL },
+ { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
+ { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
+ { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
+#ifdef HAVE_SYSV_COMPAT
+ { "Manager", "SysVConsole", config_parse_bool, 0, &arg_sysv_console },
+#endif
+ { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
+ { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
+ { "Manager", "MountAuto", config_parse_bool, 0, &arg_mount_auto },
+ { "Manager", "SwapAuto", config_parse_bool, 0, &arg_swap_auto },
+ { "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers },
+ { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
+ { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
+ { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
+ { "Manager", "RuntimeWatchdogSec", config_parse_usec, 0, &arg_runtime_watchdog },
+ { "Manager", "ShutdownWatchdogSec", config_parse_usec, 0, &arg_shutdown_watchdog },
+ { NULL, NULL, NULL, 0, NULL }
+ };
+
+ FILE *f;
+ const char *fn;
+ int r;
+
+ fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file '%s': %m", fn);
+ return 0;
+ }
+
+ r = config_parse(fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, NULL);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ fclose(f);
+
+ return 0;
+}
+
+static int parse_proc_cmdline(void) {
+ char *line, *w, *state;
+ int r;
+ size_t l;
+
+ /* Don't read /proc/cmdline if we are in a container, since
+ * that is only relevant for the host system */
+ if (detect_container(NULL) > 0)
+ return 0;
+
+ if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ return 0;
+ }
+
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+ char *word;
+
+ if (!(word = strndup(w, l))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ r = parse_proc_cmdline_word(word);
+ free(word);
+
+ if (r < 0)
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ free(line);
+ return r;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_LOG_LEVEL = 0x100,
+ ARG_LOG_TARGET,
+ ARG_LOG_COLOR,
+ ARG_LOG_LOCATION,
+ ARG_UNIT,
+ ARG_SYSTEM,
+ ARG_USER,
+ ARG_TEST,
+ ARG_DUMP_CONFIGURATION_ITEMS,
+ ARG_DUMP_CORE,
+ ARG_CRASH_SHELL,
+ ARG_CONFIRM_SPAWN,
+ ARG_SHOW_STATUS,
+ ARG_SYSV_CONSOLE,
+ ARG_DESERIALIZE,
+ ARG_INTROSPECT,
+ ARG_DEFAULT_STD_OUTPUT,
+ ARG_DEFAULT_STD_ERROR
+ };
+
+ static const struct option options[] = {
+ { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
+ { "log-target", required_argument, NULL, ARG_LOG_TARGET },
+ { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
+ { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
+ { "unit", required_argument, NULL, ARG_UNIT },
+ { "system", no_argument, NULL, ARG_SYSTEM },
+ { "user", no_argument, NULL, ARG_USER },
+ { "test", no_argument, NULL, ARG_TEST },
+ { "help", no_argument, NULL, 'h' },
+ { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
+ { "dump-core", no_argument, NULL, ARG_DUMP_CORE },
+ { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL },
+ { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
+ { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
+#ifdef HAVE_SYSV_COMPAT
+ { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
+#endif
+ { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
+ { "introspect", optional_argument, NULL, ARG_INTROSPECT },
+ { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
+ { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c, r;
+
+ assert(argc >= 1);
+ assert(argv);
+
+ if (getpid() == 1)
+ opterr = 0;
+
+ while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case ARG_LOG_LEVEL:
+ if ((r = log_set_max_level_from_string(optarg)) < 0) {
+ log_error("Failed to parse log level %s.", optarg);
+ return r;
+ }
+
+ break;
+
+ case ARG_LOG_TARGET:
+
+ if ((r = log_set_target_from_string(optarg)) < 0) {
+ log_error("Failed to parse log target %s.", optarg);
+ return r;
+ }
+
+ break;
+
+ case ARG_LOG_COLOR:
+
+ if (optarg) {
+ if ((r = log_show_color_from_string(optarg)) < 0) {
+ log_error("Failed to parse log color setting %s.", optarg);
+ return r;
+ }
+ } else
+ log_show_color(true);
+
+ break;
+
+ case ARG_LOG_LOCATION:
+
+ if (optarg) {
+ if ((r = log_show_location_from_string(optarg)) < 0) {
+ log_error("Failed to parse log location setting %s.", optarg);
+ return r;
+ }
+ } else
+ log_show_location(true);
+
+ break;
+
+ case ARG_DEFAULT_STD_OUTPUT:
+
+ if ((r = exec_output_from_string(optarg)) < 0) {
+ log_error("Failed to parse default standard output setting %s.", optarg);
+ return r;
+ } else
+ arg_default_std_output = r;
+ break;
+
+ case ARG_DEFAULT_STD_ERROR:
+
+ if ((r = exec_output_from_string(optarg)) < 0) {
+ log_error("Failed to parse default standard error output setting %s.", optarg);
+ return r;
+ } else
+ arg_default_std_error = r;
+ break;
+
+ case ARG_UNIT:
+
+ if ((r = set_default_unit(optarg)) < 0) {
+ log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
+ return r;
+ }
+
+ break;
+
+ case ARG_SYSTEM:
+ arg_running_as = MANAGER_SYSTEM;
+ break;
+
+ case ARG_USER:
+ arg_running_as = MANAGER_USER;
+ break;
+
+ case ARG_TEST:
+ arg_action = ACTION_TEST;
+ break;
+
+ case ARG_DUMP_CONFIGURATION_ITEMS:
+ arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
+ break;
+
+ case ARG_DUMP_CORE:
+ arg_dump_core = true;
+ break;
+
+ case ARG_CRASH_SHELL:
+ arg_crash_shell = true;
+ break;
+
+ case ARG_CONFIRM_SPAWN:
+ arg_confirm_spawn = true;
+ break;
+
+ case ARG_SHOW_STATUS:
+
+ if (optarg) {
+ if ((r = parse_boolean(optarg)) < 0) {
+ log_error("Failed to show status boolean %s.", optarg);
+ return r;
+ }
+ arg_show_status = r;
+ } else
+ arg_show_status = true;
+ break;
+#ifdef HAVE_SYSV_COMPAT
+ case ARG_SYSV_CONSOLE:
+
+ if (optarg) {
+ if ((r = parse_boolean(optarg)) < 0) {
+ log_error("Failed to SysV console boolean %s.", optarg);
+ return r;
+ }
+ arg_sysv_console = r;
+ } else
+ arg_sysv_console = true;
+ break;
+#endif
+
+ case ARG_DESERIALIZE: {
+ int fd;
+ FILE *f;
+
+ if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
+ log_error("Failed to parse deserialize option %s.", optarg);
+ return r;
+ }
+
+ if (!(f = fdopen(fd, "r"))) {
+ log_error("Failed to open serialization fd: %m");
+ return r;
+ }
+
+ if (serialization)
+ fclose(serialization);
+
+ serialization = f;
+
+ break;
+ }
+
+ case ARG_INTROSPECT: {
+ const char * const * i = NULL;
+
+ for (i = bus_interface_table; *i; i += 2)
+ if (!optarg || streq(i[0], optarg)) {
+ fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
+ "<node>\n", stdout);
+ fputs(i[1], stdout);
+ fputs("</node>\n", stdout);
+
+ if (optarg)
+ break;
+ }
+
+ if (!i[0] && optarg)
+ log_error("Unknown interface %s.", optarg);
+
+ arg_action = ACTION_DONE;
+ break;
+ }
+
+ case 'h':
+ arg_action = ACTION_HELP;
+ break;
+
+ case 'D':
+ log_set_max_level(LOG_DEBUG);
+ break;
+
+ case 'b':
+ case 's':
+ case 'z':
+ /* Just to eat away the sysvinit kernel
+ * cmdline args without getopt() error
+ * messages that we'll parse in
+ * parse_proc_cmdline_word() or ignore. */
+
+ case '?':
+ default:
+ if (getpid() != 1) {
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+
+ break;
+ }
+
+ if (optind < argc && getpid() != 1) {
+ /* Hmm, when we aren't run as init system
+ * let's complain about excess arguments */
+
+ log_error("Excess arguments.");
+ return -EINVAL;
+ }
+
+ if (detect_container(NULL) > 0) {
+ char **a;
+
+ /* All /proc/cmdline arguments the kernel didn't
+ * understand it passed to us. We're not really
+ * interested in that usually since /proc/cmdline is
+ * more interesting and complete. With one exception:
+ * if we are run in a container /proc/cmdline is not
+ * relevant for the container, hence we rely on argv[]
+ * instead. */
+
+ for (a = argv; a < argv + argc; a++)
+ if ((r = parse_proc_cmdline_word(*a)) < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...]\n\n"
+ "Starts up and maintains the system or user services.\n\n"
+ " -h --help Show this help\n"
+ " --test Determine startup sequence, dump it and exit\n"
+ " --dump-configuration-items Dump understood unit configuration items\n"
+ " --introspect[=INTERFACE] Extract D-Bus interface data\n"
+ " --unit=UNIT Set default unit\n"
+ " --system Run a system instance, even if PID != 1\n"
+ " --user Run a user instance\n"
+ " --dump-core Dump core on crash\n"
+ " --crash-shell Run shell on crash\n"
+ " --confirm-spawn Ask for confirmation when spawning processes\n"
+ " --show-status[=0|1] Show status updates on the console during bootup\n"
+#ifdef HAVE_SYSV_COMPAT
+ " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
+#endif
+ " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
+ " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
+ " --log-color[=0|1] Highlight important log messages\n"
+ " --log-location[=0|1] Include code location in log messages\n"
+ " --default-standard-output= Set default standard output for services\n"
+ " --default-standard-error= Set default standard error output for services\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
+ FILE *f = NULL;
+ FDSet *fds = NULL;
+ int r;
+
+ assert(m);
+ assert(_f);
+ assert(_fds);
+
+ /* Make sure nothing is really destructed when we shut down */
+ m->n_reloading ++;
+
+ if ((r = manager_open_serialization(m, &f)) < 0) {
+ log_error("Failed to create serialization file: %s", strerror(-r));
+ goto fail;
+ }
+
+ if (!(fds = fdset_new())) {
+ r = -ENOMEM;
+ log_error("Failed to allocate fd set: %s", strerror(-r));
+ goto fail;
+ }
+
+ if ((r = manager_serialize(m, f, fds)) < 0) {
+ log_error("Failed to serialize state: %s", strerror(-r));
+ goto fail;
+ }
+
+ if (fseeko(f, 0, SEEK_SET) < 0) {
+ log_error("Failed to rewind serialization fd: %m");
+ goto fail;
+ }
+
+ if ((r = fd_cloexec(fileno(f), false)) < 0) {
+ log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
+ goto fail;
+ }
+
+ if ((r = fdset_cloexec(fds, false)) < 0) {
+ log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
+ goto fail;
+ }
+
+ *_f = f;
+ *_fds = fds;
+
+ return 0;
+
+fail:
+ fdset_free(fds);
+
+ if (f)
+ fclose(f);
+
+ return r;
+}
+
+static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
+ const char *e;
+ unsigned long long a, b;
+
+ assert(t);
+
+ e = getenv("RD_TIMESTAMP");
+ if (!e)
+ return NULL;
+
+ if (sscanf(e, "%llu %llu", &a, &b) != 2)
+ return NULL;
+
+ t->realtime = (usec_t) a;
+ t->monotonic = (usec_t) b;
+
+ return t;
+}
+
+static void test_mtab(void) {
+ char *p;
+
+ /* Check that /etc/mtab is a symlink */
+
+ if (readlink_malloc("/etc/mtab", &p) >= 0) {
+ bool b;
+
+ b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
+ free(p);
+
+ if (b)
+ return;
+ }
+
+ log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
+ "This is not supported anymore. "
+ "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
+}
+
+static void test_usr(void) {
+
+ /* Check that /usr is not a separate fs */
+
+ if (dir_is_empty("/usr") <= 0)
+ return;
+
+ log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
+ "Some things will probably break (sometimes even silently) in mysterious ways. "
+ "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
+}
+
+static void test_cgroups(void) {
+
+ if (access("/proc/cgroups", F_OK) >= 0)
+ return;
+
+ log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
+ "Systems without control groups are not supported. "
+ "We will now sleep for 10s, and then continue boot-up. "
+ "Expect breakage and please do not file bugs. "
+ "Instead fix your kernel and enable CONFIG_CGROUPS. "
+ "Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
+
+ sleep(10);
+}
+
+int main(int argc, char *argv[]) {
+ Manager *m = NULL;
+ int r, retval = EXIT_FAILURE;
+ usec_t before_startup, after_startup;
+ char timespan[FORMAT_TIMESPAN_MAX];
+ FDSet *fds = NULL;
+ bool reexecute = false;
+ const char *shutdown_verb = NULL;
+ dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
+ static char systemd[] = "systemd";
+ bool is_reexec = false;
+ int j;
+ bool loaded_policy = false;
+ bool arm_reboot_watchdog = false;
+
+#ifdef HAVE_SYSV_COMPAT
+ if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
+ /* This is compatibility support for SysV, where
+ * calling init as a user is identical to telinit. */
+
+ errno = -ENOENT;
+ execv(SYSTEMCTL_BINARY_PATH, argv);
+ log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
+ return 1;
+ }
+#endif
+
+ /* Determine if this is a reexecution or normal bootup. We do
+ * the full command line parsing much later, so let's just
+ * have a quick peek here. */
+
+ for (j = 1; j < argc; j++)
+ if (streq(argv[j], "--deserialize")) {
+ is_reexec = true;
+ break;
+ }
+
+ /* If we get started via the /sbin/init symlink then we are
+ called 'init'. After a subsequent reexecution we are then
+ called 'systemd'. That is confusing, hence let's call us
+ systemd right-away. */
+ program_invocation_short_name = systemd;
+ prctl(PR_SET_NAME, systemd);
+
+ saved_argv = argv;
+ saved_argc = argc;
+
+ log_show_color(isatty(STDERR_FILENO) > 0);
+ log_show_location(false);
+ log_set_max_level(LOG_INFO);
+
+ if (getpid() == 1) {
+ arg_running_as = MANAGER_SYSTEM;
+ log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_JOURNAL_OR_KMSG);
+
+ if (!is_reexec) {
+ if (selinux_setup(&loaded_policy) < 0)
+ goto finish;
+ if (ima_setup() < 0)
+ goto finish;
+ }
+
+ log_open();
+
+ if (label_init() < 0)
+ goto finish;
+
+ if (!is_reexec)
+ if (hwclock_is_localtime() > 0) {
+ int min;
+
+ r = hwclock_apply_localtime_delta(&min);
+ if (r < 0)
+ log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
+ else
+ log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
+ }
+
+ } else {
+ arg_running_as = MANAGER_USER;
+ log_set_target(LOG_TARGET_AUTO);
+ log_open();
+ }
+
+ /* Initialize default unit */
+ if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
+ goto finish;
+
+ /* By default, mount "cpu" and "cpuacct" together */
+ arg_join_controllers = new(char**, 2);
+ if (!arg_join_controllers)
+ goto finish;
+
+ arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
+ arg_join_controllers[1] = NULL;
+
+ if (!arg_join_controllers[0])
+ goto finish;
+
+ /* Mount /proc, /sys and friends, so that /proc/cmdline and
+ * /proc/$PID/fd is available. */
+ if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) {
+ r = mount_setup(loaded_policy);
+ if (r < 0)
+ goto finish;
+ }
+
+ /* Reset all signal handlers. */
+ assert_se(reset_all_signal_handlers() == 0);
+
+ /* If we are init, we can block sigkill. Yay. */
+ ignore_signals(SIGNALS_IGNORE, -1);
+
+ if (parse_config_file() < 0)
+ goto finish;
+
+ if (arg_running_as == MANAGER_SYSTEM)
+ if (parse_proc_cmdline() < 0)
+ goto finish;
+
+ log_parse_environment();
+
+ if (parse_argv(argc, argv) < 0)
+ goto finish;
+
+ if (arg_action == ACTION_TEST && geteuid() == 0) {
+ log_error("Don't run test mode as root.");
+ goto finish;
+ }
+
+ if (arg_running_as == MANAGER_SYSTEM &&
+ arg_action == ACTION_RUN &&
+ running_in_chroot() > 0) {
+ log_error("Cannot be run in a chroot() environment.");
+ goto finish;
+ }
+
+ if (arg_action == ACTION_HELP) {
+ retval = help();
+ goto finish;
+ } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
+ unit_dump_config_items(stdout);
+ retval = EXIT_SUCCESS;
+ goto finish;
+ } else if (arg_action == ACTION_DONE) {
+ retval = EXIT_SUCCESS;
+ goto finish;
+ }
+
+ assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
+
+ /* Close logging fds, in order not to confuse fdset below */
+ log_close();
+
+ /* Remember open file descriptors for later deserialization */
+ if (serialization) {
+ r = fdset_new_fill(&fds);
+ if (r < 0) {
+ log_error("Failed to allocate fd set: %s", strerror(-r));
+ goto finish;
+ }
+
+ assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
+ } else
+ close_all_fds(NULL, 0);
+
+ /* Set up PATH unless it is already set */
+ setenv("PATH",
+#ifdef HAVE_SPLIT_USR
+ "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+#else
+ "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
+#endif
+ arg_running_as == MANAGER_SYSTEM);
+
+ if (arg_running_as == MANAGER_SYSTEM) {
+ /* Parse the data passed to us. We leave this
+ * variables set, but the manager later on will not
+ * pass them on to our children. */
+ parse_initrd_timestamp(&initrd_timestamp);
+
+ /* Unset some environment variables passed in from the
+ * kernel that don't really make sense for us. */
+ unsetenv("HOME");
+ unsetenv("TERM");
+
+ /* When we are invoked by a shell, these might be set,
+ * but make little sense to pass on */
+ unsetenv("PWD");
+ unsetenv("SHLVL");
+ unsetenv("_");
+
+ /* All other variables are left as is, so that clients
+ * can still read them via /proc/1/environ */
+ }
+
+ /* Move out of the way, so that we won't block unmounts */
+ assert_se(chdir("/") == 0);
+
+ if (arg_running_as == MANAGER_SYSTEM) {
+ /* Become a session leader if we aren't one yet. */
+ setsid();
+
+ /* Disable the umask logic */
+ umask(0);
+ }
+
+ /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
+ dbus_connection_set_change_sigpipe(FALSE);
+
+ /* Reset the console, but only if this is really init and we
+ * are freshly booted */
+ if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
+ console_setup(getpid() == 1 && !is_reexec);
+ make_null_stdio();
+ }
+
+ /* Open the logging devices, if possible and necessary */
+ log_open();
+
+ /* Make sure we leave a core dump without panicing the
+ * kernel. */
+ if (getpid() == 1)
+ install_crash_handler();
+
+ if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) {
+ r = mount_cgroup_controllers(arg_join_controllers);
+ if (r < 0)
+ goto finish;
+ }
+
+ log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
+ PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
+
+ if (arg_running_as == MANAGER_SYSTEM && !is_reexec) {
+ locale_setup();
+
+ if (arg_show_status || plymouth_running())
+ status_welcome();
+
+ kmod_setup();
+ hostname_setup();
+ machine_id_setup();
+ loopback_setup();
+
+ test_mtab();
+ test_usr();
+ test_cgroups();
+ }
+
+ if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0)
+ watchdog_set_timeout(&arg_runtime_watchdog);
+
+ r = manager_new(arg_running_as, &m);
+ if (r < 0) {
+ log_error("Failed to allocate manager object: %s", strerror(-r));
+ goto finish;
+ }
+
+ m->confirm_spawn = arg_confirm_spawn;
+#ifdef HAVE_SYSV_COMPAT
+ m->sysv_console = arg_sysv_console;
+#endif
+ m->mount_auto = arg_mount_auto;
+ m->swap_auto = arg_swap_auto;
+ m->default_std_output = arg_default_std_output;
+ m->default_std_error = arg_default_std_error;
+ m->runtime_watchdog = arg_runtime_watchdog;
+ m->shutdown_watchdog = arg_shutdown_watchdog;
+
+ if (dual_timestamp_is_set(&initrd_timestamp))
+ m->initrd_timestamp = initrd_timestamp;
+
+ if (arg_default_controllers)
+ manager_set_default_controllers(m, arg_default_controllers);
+
+ manager_set_show_status(m, arg_show_status);
+
+ before_startup = now(CLOCK_MONOTONIC);
+
+ r = manager_startup(m, serialization, fds);
+ if (r < 0)
+ log_error("Failed to fully start up daemon: %s", strerror(-r));
+
+ if (fds) {
+ /* This will close all file descriptors that were opened, but
+ * not claimed by any unit. */
+
+ fdset_free(fds);
+ fds = NULL;
+ }
+
+ if (serialization) {
+ fclose(serialization);
+ serialization = NULL;
+ } else {
+ DBusError error;
+ Unit *target = NULL;
+ Job *default_unit_job;
+
+ dbus_error_init(&error);
+
+ log_debug("Activating default unit: %s", arg_default_unit);
+
+ r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
+ if (r < 0) {
+ log_error("Failed to load default target: %s", bus_error(&error, r));
+ dbus_error_free(&error);
+ } else if (target->load_state == UNIT_ERROR)
+ log_error("Failed to load default target: %s", strerror(-target->load_error));
+ else if (target->load_state == UNIT_MASKED)
+ log_error("Default target masked.");
+
+ if (!target || target->load_state != UNIT_LOADED) {
+ log_info("Trying to load rescue target...");
+
+ r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
+ if (r < 0) {
+ log_error("Failed to load rescue target: %s", bus_error(&error, r));
+ dbus_error_free(&error);
+ goto finish;
+ } else if (target->load_state == UNIT_ERROR) {
+ log_error("Failed to load rescue target: %s", strerror(-target->load_error));
+ goto finish;
+ } else if (target->load_state == UNIT_MASKED) {
+ log_error("Rescue target masked.");
+ goto finish;
+ }
+ }
+
+ assert(target->load_state == UNIT_LOADED);
+
+ if (arg_action == ACTION_TEST) {
+ printf("-> By units:\n");
+ manager_dump_units(m, stdout, "\t");
+ }
+
+ r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
+ if (r < 0) {
+ log_error("Failed to start default target: %s", bus_error(&error, r));
+ dbus_error_free(&error);
+ goto finish;
+ }
+ m->default_unit_job_id = default_unit_job->id;
+
+ after_startup = now(CLOCK_MONOTONIC);
+ log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
+ "Loaded units and determined initial transaction in %s.",
+ format_timespan(timespan, sizeof(timespan), after_startup - before_startup));
+
+ if (arg_action == ACTION_TEST) {
+ printf("-> By jobs:\n");
+ manager_dump_jobs(m, stdout, "\t");
+ retval = EXIT_SUCCESS;
+ goto finish;
+ }
+ }
+
+ for (;;) {
+ r = manager_loop(m);
+ if (r < 0) {
+ log_error("Failed to run mainloop: %s", strerror(-r));
+ goto finish;
+ }
+
+ switch (m->exit_code) {
+
+ case MANAGER_EXIT:
+ retval = EXIT_SUCCESS;
+ log_debug("Exit.");
+ goto finish;
+
+ case MANAGER_RELOAD:
+ log_info("Reloading.");
+ r = manager_reload(m);
+ if (r < 0)
+ log_error("Failed to reload: %s", strerror(-r));
+ break;
+
+ case MANAGER_REEXECUTE:
+ if (prepare_reexecute(m, &serialization, &fds) < 0)
+ goto finish;
+
+ reexecute = true;
+ log_notice("Reexecuting.");
+ goto finish;
+
+ case MANAGER_REBOOT:
+ case MANAGER_POWEROFF:
+ case MANAGER_HALT:
+ case MANAGER_KEXEC: {
+ static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
+ [MANAGER_REBOOT] = "reboot",
+ [MANAGER_POWEROFF] = "poweroff",
+ [MANAGER_HALT] = "halt",
+ [MANAGER_KEXEC] = "kexec"
+ };
+
+ assert_se(shutdown_verb = table[m->exit_code]);
+ arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
+
+ log_notice("Shutting down.");
+ goto finish;
+ }
+
+ default:
+ assert_not_reached("Unknown exit code.");
+ }
+ }
+
+finish:
+ if (m)
+ manager_free(m);
+
+ free(arg_default_unit);
+ strv_free(arg_default_controllers);
+ free_join_controllers();
+
+ dbus_shutdown();
+
+ label_finish();
+
+ if (reexecute) {
+ const char *args[15];
+ unsigned i = 0;
+ char sfd[16];
+
+ assert(serialization);
+ assert(fds);
+
+ args[i++] = SYSTEMD_BINARY_PATH;
+
+ args[i++] = "--log-level";
+ args[i++] = log_level_to_string(log_get_max_level());
+
+ args[i++] = "--log-target";
+ args[i++] = log_target_to_string(log_get_target());
+
+ if (arg_running_as == MANAGER_SYSTEM)
+ args[i++] = "--system";
+ else
+ args[i++] = "--user";
+
+ if (arg_dump_core)
+ args[i++] = "--dump-core";
+
+ if (arg_crash_shell)
+ args[i++] = "--crash-shell";
+
+ if (arg_confirm_spawn)
+ args[i++] = "--confirm-spawn";
+
+ if (arg_show_status)
+ args[i++] = "--show-status=1";
+ else
+ args[i++] = "--show-status=0";
+
+#ifdef HAVE_SYSV_COMPAT
+ if (arg_sysv_console)
+ args[i++] = "--sysv-console=1";
+ else
+ args[i++] = "--sysv-console=0";
+#endif
+
+ snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
+ char_array_0(sfd);
+
+ args[i++] = "--deserialize";
+ args[i++] = sfd;
+
+ args[i++] = NULL;
+
+ assert(i <= ELEMENTSOF(args));
+
+ /* Close and disarm the watchdog, so that the new
+ * instance can reinitialize it, but doesn't get
+ * rebooted while we do that */
+ watchdog_close(true);
+
+ execv(args[0], (char* const*) args);
+
+ log_error("Failed to reexecute: %m");
+ }
+
+ if (serialization)
+ fclose(serialization);
+
+ if (fds)
+ fdset_free(fds);
+
+ if (shutdown_verb) {
+ const char * command_line[] = {
+ SYSTEMD_SHUTDOWN_BINARY_PATH,
+ shutdown_verb,
+ NULL
+ };
+ char **env_block;
+
+ if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
+ char e[32];
+
+ /* If we reboot let's set the shutdown
+ * watchdog and tell the shutdown binary to
+ * repeatedly ping it */
+ watchdog_set_timeout(&arg_shutdown_watchdog);
+ watchdog_close(false);
+
+ /* Tell the binary how often to ping */
+ snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog);
+ char_array_0(e);
+
+ env_block = strv_append(environ, e);
+ } else {
+ env_block = strv_copy(environ);
+ watchdog_close(true);
+ }
+
+ execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
+ free(env_block);
+ log_error("Failed to execute shutdown binary, freezing: %m");
+ }
+
+ if (getpid() == 1)
+ freeze();
+
+ return retval;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-28 09:24:42 +0000