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-rw-r--r--src/core/main.c1950
1 files changed, 0 insertions, 1950 deletions
diff --git a/src/core/main.c b/src/core/main.c
deleted file mode 100644
index 4da8ecb864..0000000000
--- a/src/core/main.c
+++ /dev/null
@@ -1,1950 +0,0 @@
-/*-*- 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 <sys/mount.h>
-
-#include "manager.h"
-#include "log.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"
-#include "path-util.h"
-#include "switch-root.h"
-#include "capability.h"
-#include "killall.h"
-
-#include "mount-setup.h"
-#include "loopback-setup.h"
-#include "kmod-setup.h"
-#include "hostname-setup.h"
-#include "machine-id-setup.h"
-#include "locale-setup.h"
-#include "hwclock.h"
-#include "selinux-setup.h"
-#include "ima-setup.h"
-#include "sd-daemon.h"
-
-static enum {
- ACTION_RUN,
- ACTION_HELP,
- ACTION_VERSION,
- ACTION_TEST,
- ACTION_DUMP_CONFIGURATION_ITEMS,
- ACTION_DONE
-} arg_action = ACTION_RUN;
-
-static char *arg_default_unit = NULL;
-static SystemdRunningAs arg_running_as = _SYSTEMD_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;
-static bool arg_switched_root = false;
-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 struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
-static uint64_t arg_capability_bounding_set_drop = 0;
-static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
-
-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);
-
- pid = fork();
- if (pid < 0)
- log_error("Failed to fork off crash shell: %m");
- else if (pid == 0) {
- make_console_stdio();
- execl("/bin/sh", "/bin/sh", NULL);
-
- log_error("execl() failed: %m");
- _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);
-
- c = strdup(u);
- if (!c)
- 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=")) {
-
- if (!in_initrd())
- return set_default_unit(word + 13);
-
- } else if (startswith(word, "rd.systemd.unit=")) {
-
- if (in_initrd())
- return set_default_unit(word + 16);
-
- } 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 %m. Ignoring.");
- } else {
- *eq = 0;
- r = setenv(cenv, eq + 1, 1);
- if (r < 0)
- log_warning("setenv failed %m. Ignoring.");
- }
- free(cenv);
-
- } else if (startswith(word, "systemd.") ||
- (in_initrd() && startswith(word, "rd.systemd."))) {
-
- log_warning("Unknown kernel switch %s. Ignoring.", word);
-
- log_info("Supported kernel switches:\n"
- "systemd.unit=UNIT Default unit to start\n"
- "rd.systemd.unit=UNIT Default unit to start when run in initrd\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"
- "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"
- "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
-
- } else if (streq(word, "quiet"))
- arg_show_status = false;
- else if (!in_initrd()) {
- 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 log_oom();
-
- r = safe_atou(t, &cpu);
- free(t);
-
- if (!c)
- if (!(c = cpu_set_malloc(&ncpus)))
- return log_oom();
-
- 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 log_oom();
-
- 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 log_oom();
- }
-
- 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 log_oom();
- }
-
- 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 log_oom();
- }
-
- strv_free(l);
- l = c;
- } else {
- char **c;
-
- c = strv_copy(*a);
- if (!c) {
- strv_free(l);
- strv_free_free(t);
- return log_oom();
- }
-
- 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 },
- { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
- { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
- { "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 },
- { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
- { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
- { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
- { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
- { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
- { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
- { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
- { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
- { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
- { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
- { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
- { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
- { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
- { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
- { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
- { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
- { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
- { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
- { NULL, NULL, NULL, 0, NULL }
- };
-
- FILE *f;
- const char *fn;
- int r;
-
- fn = arg_running_as == SYSTEMD_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);
- if (r < 0) {
- log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
- free(word);
- goto finish;
- }
-
- free(word);
- }
-
- 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_VERSION,
- ARG_DUMP_CONFIGURATION_ITEMS,
- ARG_DUMP_CORE,
- ARG_CRASH_SHELL,
- ARG_CONFIRM_SPAWN,
- ARG_SHOW_STATUS,
- ARG_DESERIALIZE,
- ARG_SWITCHED_ROOT,
- 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' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
- { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
- { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
- { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
- { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
- { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
- { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
- { "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 = SYSTEMD_SYSTEM;
- break;
-
- case ARG_USER:
- arg_running_as = SYSTEMD_USER;
- break;
-
- case ARG_TEST:
- arg_action = ACTION_TEST;
- break;
-
- case ARG_VERSION:
- arg_action = ACTION_VERSION;
- break;
-
- case ARG_DUMP_CONFIGURATION_ITEMS:
- arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
- break;
-
- case ARG_DUMP_CORE:
- r = optarg ? parse_boolean(optarg) : 1;
- if (r < 0) {
- log_error("Failed to parse dump core boolean %s.", optarg);
- return r;
- }
- arg_dump_core = r;
- break;
-
- case ARG_CRASH_SHELL:
- r = optarg ? parse_boolean(optarg) : 1;
- if (r < 0) {
- log_error("Failed to parse crash shell boolean %s.", optarg);
- return r;
- }
- arg_crash_shell = r;
- break;
-
- case ARG_CONFIRM_SPAWN:
- r = optarg ? parse_boolean(optarg) : 1;
- if (r < 0) {
- log_error("Failed to parse confirm spawn boolean %s.", optarg);
- return r;
- }
- arg_confirm_spawn = r;
- break;
-
- case ARG_SHOW_STATUS:
- r = optarg ? parse_boolean(optarg) : 1;
- if (r < 0) {
- log_error("Failed to parse show status boolean %s.", optarg);
- return r;
- }
- arg_show_status = r;
- break;
-
- 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_SWITCHED_ROOT:
- arg_switched_root = true;
- 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) {
- log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
- 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[=0|1] Dump core on crash\n"
- " --crash-shell[=0|1] Run shell on crash\n"
- " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
- " --show-status[=0|1] Show status updates on the console during bootup\n"
- " --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 version(void) {
- puts(PACKAGE_STRING);
- puts(DISTRIBUTION);
- puts(SYSTEMD_FEATURES);
-
- return 0;
-}
-
-static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool serialize_jobs) {
- 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 ++;
-
- r = manager_open_serialization(m, &f);
- if (r < 0) {
- log_error("Failed to create serialization file: %s", strerror(-r));
- goto fail;
- }
-
- fds = fdset_new();
- if (!fds) {
- r = -ENOMEM;
- log_error("Failed to allocate fd set: %s", strerror(-r));
- goto fail;
- }
-
- r = manager_serialize(m, f, fds, serialize_jobs);
- if (r < 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;
- }
-
- r = fd_cloexec(fileno(f), false);
- if (r < 0) {
- log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
- goto fail;
- }
-
- r = fdset_cloexec(fds, false);
- if (r < 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 int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
- struct rlimit nl;
- int r;
-
- assert(saved_rlimit);
-
- /* Save the original RLIMIT_NOFILE so that we can reset it
- * later when transitioning from the initrd to the main
- * systemd or suchlike. */
- if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
- log_error("Reading RLIMIT_NOFILE failed: %m");
- return -errno;
- }
-
- /* Make sure forked processes get the default kernel setting */
- if (!arg_default_rlimit[RLIMIT_NOFILE]) {
- struct rlimit *rl;
-
- rl = newdup(struct rlimit, saved_rlimit, 1);
- if (!rl)
- return log_oom();
-
- arg_default_rlimit[RLIMIT_NOFILE] = rl;
- }
-
- /* Bump up the resource limit for ourselves substantially */
- nl.rlim_cur = nl.rlim_max = 64*1024;
- r = setrlimit_closest(RLIMIT_NOFILE, &nl);
- if (r < 0) {
- log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r));
- return r;
- }
-
- return 0;
-}
-
-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);
-}
-
-static int initialize_join_controllers(void) {
- /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
- * + "net_prio". We'd like to add "cpuset" to the mix, but
- * "cpuset" does't really work for groups with no initialized
- * attributes. */
-
- arg_join_controllers = new(char**, 3);
- if (!arg_join_controllers)
- return -ENOMEM;
-
- arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
- if (!arg_join_controllers[0])
- return -ENOMEM;
-
- arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
- if (!arg_join_controllers[1])
- return -ENOMEM;
-
- arg_join_controllers[2] = NULL;
- return 0;
-}
-
-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 skip_setup = false;
- int j;
- bool loaded_policy = false;
- bool arm_reboot_watchdog = false;
- bool queue_default_job = false;
- char *switch_root_dir = NULL, *switch_root_init = NULL;
- static struct rlimit saved_rlimit_nofile = { 0, 0 };
-
-#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")) {
- skip_setup = true;
- break;
- }
-
- /* If we have switched root, do all the special setup
- * things */
- for (j = 1; j < argc; j++)
- if (streq(argv[j], "--switched-root")) {
- skip_setup = false;
- 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);
-
- if (getpid() == 1 && detect_container(NULL) <= 0) {
-
- /* Running outside of a container as PID 1 */
- arg_running_as = SYSTEMD_SYSTEM;
- make_null_stdio();
- log_set_target(LOG_TARGET_KMSG);
- log_open();
-
- if (in_initrd()) {
- char *rd_timestamp = NULL;
-
- dual_timestamp_get(&initrd_timestamp);
- asprintf(&rd_timestamp, "%llu %llu",
- (unsigned long long) initrd_timestamp.realtime,
- (unsigned long long) initrd_timestamp.monotonic);
- if (rd_timestamp) {
- setenv("RD_TIMESTAMP", rd_timestamp, 1);
- free(rd_timestamp);
- }
- }
-
- if (!skip_setup) {
- if (selinux_setup(&loaded_policy) < 0)
- goto finish;
- if (ima_setup() < 0)
- goto finish;
- }
-
- if (label_init(NULL) < 0)
- goto finish;
-
- if (!skip_setup) {
- if (hwclock_is_localtime() > 0) {
- int min;
-
- /* The first-time call to settimeofday() does a time warp in the kernel */
- r = hwclock_set_timezone(&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 if (!in_initrd()) {
- /*
- * Do dummy first-time call to seal the kernel's time warp magic
- *
- * Do not call this this from inside the initrd. The initrd might not
- * carry /etc/adjtime with LOCAL, but the real system could be set up
- * that way. In such case, we need to delay the time-warp or the sealing
- * until we reach the real system.
- */
- hwclock_reset_timezone();
-
- /* Tell the kernel our time zone */
- r = hwclock_set_timezone(NULL);
- if (r < 0)
- log_error("Failed to set the kernel's time zone, ignoring: %s", strerror(-r));
- }
- }
-
- /* Set the default for later on, but don't actually
- * open the logs like this for now. Note that if we
- * are transitioning from the initrd there might still
- * be journal fd open, and we shouldn't attempt
- * opening that before we parsed /proc/cmdline which
- * might redirect output elsewhere. */
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
-
- } else if (getpid() == 1) {
-
- /* Running inside a container, as PID 1 */
- arg_running_as = SYSTEMD_SYSTEM;
- log_set_target(LOG_TARGET_CONSOLE);
- log_open();
-
- /* For the later on, see above... */
- log_set_target(LOG_TARGET_JOURNAL);
-
- } else {
-
- /* Running as user instance */
- arg_running_as = SYSTEMD_USER;
- log_set_target(LOG_TARGET_AUTO);
- log_open();
- }
-
- /* Initialize default unit */
- r = set_default_unit(SPECIAL_DEFAULT_TARGET);
- if (r < 0) {
- log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
- goto finish;
- }
-
- r = initialize_join_controllers();
- if (r < 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 == SYSTEMD_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 == SYSTEMD_USER &&
- arg_action == ACTION_RUN &&
- sd_booted() <= 0) {
- log_error("Trying to run as user instance, but the system has not been booted with systemd.");
- goto finish;
- }
-
- if (arg_running_as == SYSTEMD_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_VERSION) {
- retval = version();
- 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 == SYSTEMD_SYSTEM);
-
- if (arg_running_as == SYSTEMD_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. */
- if (!in_initrd())
- 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("_");
-
- /* When we are invoked by a chroot-like tool such as
- * nspawn, these might be set, but make little sense
- * to pass on */
- unsetenv("USER");
- unsetenv("LOGNAME");
-
- /* 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 == SYSTEMD_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 == SYSTEMD_SYSTEM && arg_action == ACTION_RUN)
- console_setup(getpid() == 1 && !skip_setup);
-
- /* 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;
- }
-
- if (arg_running_as == SYSTEMD_SYSTEM) {
- const char *virtualization = NULL;
-
- log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")");
-
- detect_virtualization(&virtualization);
- if (virtualization)
- log_info("Detected virtualization '%s'.", virtualization);
-
- if (in_initrd())
- log_info("Running in initial RAM disk.");
-
- } else
- log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")");
-
- if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
- 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 == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
- watchdog_set_timeout(&arg_runtime_watchdog);
-
- if (arg_timer_slack_nsec != (nsec_t) -1)
- if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
- log_error("Failed to adjust timer slack: %m");
-
- if (arg_capability_bounding_set_drop) {
- r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
- if (r < 0) {
- log_error("Failed to drop capability bounding set: %s", strerror(-r));
- goto finish;
- }
- r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
- if (r < 0) {
- log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
- goto finish;
- }
- }
-
- if (arg_running_as == SYSTEMD_USER) {
- /* Become reaper of our children */
- if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
- log_warning("Failed to make us a subreaper: %m");
- if (errno == EINVAL)
- log_info("Perhaps the kernel version is too old (< 3.4?)");
- }
- }
-
- if (arg_running_as == SYSTEMD_SYSTEM)
- bump_rlimit_nofile(&saved_rlimit_nofile);
-
- 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;
- 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;
-
- manager_set_default_rlimits(m, arg_default_rlimit);
-
- 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);
-
- /* Remember whether we should queue the default job */
- queue_default_job = !serialization || arg_switched_root;
-
- 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));
-
- /* This will close all file descriptors that were opened, but
- * not claimed by any unit. */
- if (fds) {
- fdset_free(fds);
- fds = NULL;
- }
-
- if (serialization) {
- fclose(serialization);
- serialization = NULL;
- }
-
- if (queue_default_job) {
- 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, true) < 0)
- goto finish;
-
- reexecute = true;
- log_notice("Reexecuting.");
- goto finish;
-
- case MANAGER_SWITCH_ROOT:
- /* Steal the switch root parameters */
- switch_root_dir = m->switch_root;
- switch_root_init = m->switch_root_init;
- m->switch_root = m->switch_root_init = NULL;
-
- if (!switch_root_init)
- if (prepare_reexecute(m, &serialization, &fds, false) < 0)
- goto finish;
-
- reexecute = true;
- log_notice("Switching root.");
- 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);
-
- for (j = 0; j < RLIMIT_NLIMITS; j++)
- free(arg_default_rlimit[j]);
-
- free(arg_default_unit);
- strv_free(arg_default_controllers);
- free_join_controllers();
-
- dbus_shutdown();
- label_finish();
-
- if (reexecute) {
- const char **args;
- unsigned i, args_size;
-
- /* 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);
-
- /* Reset the RLIMIT_NOFILE to the kernel default, so
- * that the new systemd can pass the kernel default to
- * its child processes */
- if (saved_rlimit_nofile.rlim_cur > 0)
- setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
-
- if (switch_root_dir) {
- /* Kill all remaining processes from the
- * initrd, but don't wait for them, so that we
- * can handle the SIGCHLD for them after
- * deserializing. */
- broadcast_signal(SIGTERM, false);
-
- /* And switch root */
- r = switch_root(switch_root_dir);
- if (r < 0)
- log_error("Failed to switch root, ignoring: %s", strerror(-r));
- }
-
- args_size = MAX(6, argc+1);
- args = newa(const char*, args_size);
-
- if (!switch_root_init) {
- char sfd[16];
-
- /* First try to spawn ourselves with the right
- * path, and with full serialization. We do
- * this only if the user didn't specify an
- * explicit init to spawn. */
-
- assert(serialization);
- assert(fds);
-
- snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
- char_array_0(sfd);
-
- i = 0;
- args[i++] = SYSTEMD_BINARY_PATH;
- if (switch_root_dir)
- args[i++] = "--switched-root";
- args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
- args[i++] = "--deserialize";
- args[i++] = sfd;
- args[i++] = NULL;
-
- assert(i <= args_size);
- execv(args[0], (char* const*) args);
- }
-
- /* Try the fallback, if there is any, without any
- * serialization. We pass the original argv[] and
- * envp[]. (Well, modulo the ordering changes due to
- * getopt() in argv[], and some cleanups in envp[],
- * but let's hope that doesn't matter.) */
-
- if (serialization) {
- fclose(serialization);
- serialization = NULL;
- }
-
- if (fds) {
- fdset_free(fds);
- fds = NULL;
- }
-
- /* Reopen the console */
- make_console_stdio();
-
- for (j = 1, i = 1; j < argc; j++)
- args[i++] = argv[j];
- args[i++] = NULL;
- assert(i <= args_size);
-
- if (switch_root_init) {
- args[0] = switch_root_init;
- execv(args[0], (char* const*) args);
- log_warning("Failed to execute configured init, trying fallback: %m");
- }
-
- args[0] = "/sbin/init";
- execv(args[0], (char* const*) args);
-
- if (errno == ENOENT) {
- log_warning("No /sbin/init, trying fallback");
-
- args[0] = "/bin/sh";
- args[1] = NULL;
- execv(args[0], (char* const*) args);
- log_error("Failed to execute /bin/sh, giving up: %m");
- } else
- log_warning("Failed to execute /sbin/init, giving up: %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 2024-07-23 06:38:26 +0000