| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <getopt.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mount.h> |
| #include <sys/prctl.h> |
| #include <sys/reboot.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| #if HAVE_SECCOMP |
| #include <seccomp.h> |
| #endif |
| #if HAVE_VALGRIND_VALGRIND_H |
| #include <valgrind/valgrind.h> |
| #endif |
| |
| #include "sd-bus.h" |
| #include "sd-daemon.h" |
| #include "sd-messages.h" |
| |
| #include "alloc-util.h" |
| #include "architecture.h" |
| #include "build.h" |
| #include "bus-error.h" |
| #include "bus-util.h" |
| #include "capability-util.h" |
| #include "cgroup-util.h" |
| #include "clock-util.h" |
| #include "conf-parser.h" |
| #include "cpu-set-util.h" |
| #include "dbus.h" |
| #include "dbus-manager.h" |
| #include "def.h" |
| #include "emergency-action.h" |
| #include "env-util.h" |
| #include "exit-status.h" |
| #include "fd-util.h" |
| #include "fdset.h" |
| #include "fileio.h" |
| #include "format-util.h" |
| #include "fs-util.h" |
| #include "hostname-setup.h" |
| #include "ima-setup.h" |
| #include "killall.h" |
| #include "kmod-setup.h" |
| #include "limits-util.h" |
| #include "load-fragment.h" |
| #include "log.h" |
| #include "loopback-setup.h" |
| #include "machine-id-setup.h" |
| #include "manager.h" |
| #include "missing.h" |
| #include "mount-setup.h" |
| #include "os-util.h" |
| #include "pager.h" |
| #include "parse-util.h" |
| #include "path-util.h" |
| #include "pretty-print.h" |
| #include "proc-cmdline.h" |
| #include "process-util.h" |
| #include "raw-clone.h" |
| #include "rlimit-util.h" |
| #if HAVE_SECCOMP |
| #include "seccomp-util.h" |
| #endif |
| #include "selinux-setup.h" |
| #include "selinux-util.h" |
| #include "signal-util.h" |
| #include "smack-setup.h" |
| #include "special.h" |
| #include "stat-util.h" |
| #include "stdio-util.h" |
| #include "strv.h" |
| #include "switch-root.h" |
| #include "sysctl-util.h" |
| #include "terminal-util.h" |
| #include "umask-util.h" |
| #include "user-util.h" |
| #include "util.h" |
| #include "virt.h" |
| #include "watchdog.h" |
| |
| #if HAS_FEATURE_ADDRESS_SANITIZER |
| #include <sanitizer/lsan_interface.h> |
| #endif |
| |
| static enum { |
| ACTION_RUN, |
| ACTION_HELP, |
| ACTION_VERSION, |
| ACTION_TEST, |
| ACTION_DUMP_CONFIGURATION_ITEMS, |
| ACTION_DUMP_BUS_PROPERTIES, |
| } arg_action = ACTION_RUN; |
| static char *arg_default_unit = NULL; |
| static bool arg_system = false; |
| static bool arg_dump_core = true; |
| static int arg_crash_chvt = -1; |
| static bool arg_crash_shell = false; |
| static bool arg_crash_reboot = false; |
| static char *arg_confirm_spawn = NULL; |
| static ShowStatus arg_show_status = _SHOW_STATUS_INVALID; |
| static bool arg_switched_root = false; |
| static PagerFlags arg_pager_flags = 0; |
| static bool arg_service_watchdogs = true; |
| static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL; |
| static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; |
| static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC; |
| static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC; |
| static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC; |
| static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL; |
| static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST; |
| static usec_t arg_runtime_watchdog = 0; |
| static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE; |
| static char *arg_early_core_pattern = NULL; |
| static char *arg_watchdog_device = NULL; |
| static char **arg_default_environment = NULL; |
| static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {}; |
| static uint64_t arg_capability_bounding_set = CAP_ALL; |
| static bool arg_no_new_privs = false; |
| static nsec_t arg_timer_slack_nsec = NSEC_INFINITY; |
| static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE; |
| static Set* arg_syscall_archs = NULL; |
| static FILE* arg_serialization = NULL; |
| static int arg_default_cpu_accounting = -1; |
| static bool arg_default_io_accounting = false; |
| static bool arg_default_ip_accounting = false; |
| static bool arg_default_blockio_accounting = false; |
| static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT; |
| static bool arg_default_tasks_accounting = true; |
| static uint64_t arg_default_tasks_max = UINT64_MAX; |
| static sd_id128_t arg_machine_id = {}; |
| static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE; |
| |
| _noreturn_ static void freeze_or_exit_or_reboot(void) { |
| |
| /* If we are running in a container, let's prefer exiting, after all we can propagate an exit code to |
| * the container manager, and thus inform it that something went wrong. */ |
| if (detect_container() > 0) { |
| log_emergency("Exiting PID 1..."); |
| _exit(EXIT_EXCEPTION); |
| } |
| |
| if (arg_crash_reboot) { |
| log_notice("Rebooting in 10s..."); |
| (void) sleep(10); |
| |
| log_notice("Rebooting now..."); |
| (void) reboot(RB_AUTOBOOT); |
| log_emergency_errno(errno, "Failed to reboot: %m"); |
| } |
| |
| log_emergency("Freezing execution."); |
| freeze(); |
| } |
| |
| _noreturn_ static void crash(int sig) { |
| struct sigaction sa; |
| pid_t pid; |
| |
| if (getpid_cached() != 1) |
| /* Pass this on immediately, if this is not PID 1 */ |
| (void) raise(sig); |
| else if (!arg_dump_core) |
| log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig)); |
| else { |
| sa = (struct sigaction) { |
| .sa_handler = nop_signal_handler, |
| .sa_flags = SA_NOCLDSTOP|SA_RESTART, |
| }; |
| |
| /* We want to wait for the core process, hence let's enable SIGCHLD */ |
| (void) sigaction(SIGCHLD, &sa, NULL); |
| |
| pid = raw_clone(SIGCHLD); |
| if (pid < 0) |
| log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig)); |
| else if (pid == 0) { |
| /* Enable default signal handler for core dump */ |
| |
| sa = (struct sigaction) { |
| .sa_handler = SIG_DFL, |
| }; |
| (void) sigaction(sig, &sa, NULL); |
| |
| /* Don't limit the coredump size */ |
| (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)); |
| |
| /* Just to be sure... */ |
| (void) chdir("/"); |
| |
| /* Raise the signal again */ |
| pid = raw_getpid(); |
| (void) kill(pid, sig); /* raise() would kill the parent */ |
| |
| assert_not_reached("We shouldn't be here..."); |
| _exit(EXIT_EXCEPTION); |
| } else { |
| siginfo_t status; |
| int r; |
| |
| /* Order things nicely. */ |
| r = wait_for_terminate(pid, &status); |
| if (r < 0) |
| log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig)); |
| else if (status.si_code != CLD_DUMPED) |
| log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).", |
| signal_to_string(sig), |
| pid, sigchld_code_to_string(status.si_code), |
| status.si_status, |
| strna(status.si_code == CLD_EXITED |
| ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL) |
| : signal_to_string(status.si_status))); |
| else |
| log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid); |
| } |
| } |
| |
| if (arg_crash_chvt >= 0) |
| (void) chvt(arg_crash_chvt); |
| |
| sa = (struct sigaction) { |
| .sa_handler = SIG_IGN, |
| .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART, |
| }; |
| |
| /* Let the kernel reap children for us */ |
| (void) sigaction(SIGCHLD, &sa, NULL); |
| |
| if (arg_crash_shell) { |
| log_notice("Executing crash shell in 10s..."); |
| (void) sleep(10); |
| |
| pid = raw_clone(SIGCHLD); |
| if (pid < 0) |
| log_emergency_errno(errno, "Failed to fork off crash shell: %m"); |
| else if (pid == 0) { |
| (void) setsid(); |
| (void) make_console_stdio(); |
| (void) rlimit_nofile_safe(); |
| (void) execle("/bin/sh", "/bin/sh", NULL, environ); |
| |
| log_emergency_errno(errno, "execle() failed: %m"); |
| _exit(EXIT_EXCEPTION); |
| } else { |
| log_info("Spawned crash shell as PID "PID_FMT".", pid); |
| (void) wait_for_terminate(pid, NULL); |
| } |
| } |
| |
| freeze_or_exit_or_reboot(); |
| } |
| |
| static void install_crash_handler(void) { |
| static const struct sigaction sa = { |
| .sa_handler = crash, |
| .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */ |
| }; |
| int r; |
| |
| /* We ignore the return value here, since, we don't mind if we |
| * cannot set up a crash handler */ |
| r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); |
| if (r < 0) |
| log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m"); |
| } |
| |
| static int console_setup(void) { |
| _cleanup_close_ int tty_fd = -1; |
| int r; |
| |
| tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
| if (tty_fd < 0) |
| return log_error_errno(tty_fd, "Failed to open /dev/console: %m"); |
| |
| /* 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) |
| return log_error_errno(r, "Failed to reset /dev/console: %m"); |
| |
| return 0; |
| } |
| |
| static int parse_crash_chvt(const char *value) { |
| int b; |
| |
| if (safe_atoi(value, &arg_crash_chvt) >= 0) |
| return 0; |
| |
| b = parse_boolean(value); |
| if (b < 0) |
| return b; |
| |
| if (b > 0) |
| arg_crash_chvt = 0; /* switch to where kmsg goes */ |
| else |
| arg_crash_chvt = -1; /* turn off switching */ |
| |
| return 0; |
| } |
| |
| static int parse_confirm_spawn(const char *value, char **console) { |
| char *s; |
| int r; |
| |
| r = value ? parse_boolean(value) : 1; |
| if (r == 0) { |
| *console = NULL; |
| return 0; |
| } |
| |
| if (r > 0) /* on with default tty */ |
| s = strdup("/dev/console"); |
| else if (is_path(value)) /* on with fully qualified path */ |
| s = strdup(value); |
| else /* on with only a tty file name, not a fully qualified path */ |
| s = strjoin("/dev/", value); |
| if (!s) |
| return -ENOMEM; |
| |
| *console = s; |
| return 0; |
| } |
| |
| static int set_machine_id(const char *m) { |
| sd_id128_t t; |
| assert(m); |
| |
| if (sd_id128_from_string(m, &t) < 0) |
| return -EINVAL; |
| |
| if (sd_id128_is_null(t)) |
| return -EINVAL; |
| |
| arg_machine_id = t; |
| return 0; |
| } |
| |
| static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
| |
| int r; |
| |
| assert(key); |
| |
| if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) |
| log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value); |
| else if (in_initrd() == !!startswith(key, "rd.")) { |
| if (free_and_strdup(&arg_default_unit, value) < 0) |
| return log_oom(); |
| } |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) { |
| |
| r = value ? parse_boolean(value) : true; |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse dump core switch %s, ignoring: %m", value); |
| else |
| arg_dump_core = r; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.early_core_pattern")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| if (path_is_absolute(value)) |
| (void) parse_path_argument_and_warn(value, false, &arg_early_core_pattern); |
| else |
| log_warning("Specified core pattern '%s' is not an absolute path, ignoring.", value); |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) { |
| |
| if (!value) |
| arg_crash_chvt = 0; /* turn on */ |
| else { |
| r = parse_crash_chvt(value); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse crash chvt switch %s, ignoring: %m", value); |
| } |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) { |
| |
| r = value ? parse_boolean(value) : true; |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse crash shell switch %s, ignoring: %m", value); |
| else |
| arg_crash_shell = r; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) { |
| |
| r = value ? parse_boolean(value) : true; |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse crash reboot switch %s, ignoring: %m", value); |
| else |
| arg_crash_reboot = r; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) { |
| char *s; |
| |
| r = parse_confirm_spawn(value, &s); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse confirm_spawn switch %s, ignoring: %m", value); |
| else |
| free_and_replace(arg_confirm_spawn, s); |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) { |
| |
| r = value ? parse_boolean(value) : true; |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse service watchdog switch %s, ignoring: %m", value); |
| else |
| arg_service_watchdogs = r; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.show_status")) { |
| |
| if (value) { |
| r = parse_show_status(value, &arg_show_status); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse show status switch %s, ignoring: %m", value); |
| } else |
| arg_show_status = SHOW_STATUS_YES; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| r = exec_output_from_string(value); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse default standard output switch %s, ignoring: %m", value); |
| else |
| arg_default_std_output = r; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| r = exec_output_from_string(value); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse default standard error switch %s, ignoring: %m", value); |
| else |
| arg_default_std_error = r; |
| |
| } else if (streq(key, "systemd.setenv")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| if (env_assignment_is_valid(value)) { |
| char **env; |
| |
| env = strv_env_set(arg_default_environment, value); |
| if (!env) |
| return log_oom(); |
| |
| arg_default_environment = env; |
| } else |
| log_warning("Environment variable name '%s' is not valid. Ignoring.", value); |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| r = set_machine_id(value); |
| if (r < 0) |
| log_warning_errno(r, "MachineID '%s' is not valid, ignoring: %m", value); |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| r = parse_sec(value, &arg_default_timeout_start_usec); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse default start timeout '%s', ignoring: %m", value); |
| |
| if (arg_default_timeout_start_usec <= 0) |
| arg_default_timeout_start_usec = USEC_INFINITY; |
| |
| } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) { |
| |
| if (proc_cmdline_value_missing(key, value)) |
| return 0; |
| |
| (void) parse_path_argument_and_warn(value, false, &arg_watchdog_device); |
| |
| } else if (streq(key, "quiet") && !value) { |
| |
| if (arg_show_status == _SHOW_STATUS_INVALID) |
| arg_show_status = SHOW_STATUS_AUTO; |
| |
| } else if (streq(key, "debug") && !value) { |
| |
| /* Note that log_parse_environment() handles 'debug' |
| * too, and sets the log level to LOG_DEBUG. */ |
| |
| if (detect_container() > 0) |
| log_set_target(LOG_TARGET_CONSOLE); |
| |
| } else if (!value) { |
| const char *target; |
| |
| /* SysV compatibility */ |
| target = runlevel_to_target(key); |
| if (target) |
| return free_and_strdup(&arg_default_unit, target); |
| } |
| |
| return 0; |
| } |
| |
| #define DEFINE_SETTER(name, func, descr) \ |
| static int name(const char *unit, \ |
| const char *filename, \ |
| unsigned line, \ |
| const char *section, \ |
| unsigned section_line, \ |
| const char *lvalue, \ |
| int ltype, \ |
| const char *rvalue, \ |
| void *data, \ |
| void *userdata) { \ |
| \ |
| int r; \ |
| \ |
| assert(filename); \ |
| assert(lvalue); \ |
| assert(rvalue); \ |
| \ |
| r = func(rvalue); \ |
| if (r < 0) \ |
| log_syntax(unit, LOG_ERR, filename, line, r, \ |
| "Invalid " descr "'%s': %m", \ |
| rvalue); \ |
| \ |
| return 0; \ |
| } |
| |
| DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level"); |
| DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target"); |
| DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" ); |
| DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location"); |
| |
| static int config_parse_cpu_affinity2( |
| const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| _cleanup_cpu_free_ cpu_set_t *c = NULL; |
| int ncpus; |
| |
| ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue); |
| if (ncpus < 0) |
| return ncpus; |
| |
| if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0) |
| log_warning_errno(errno, "Failed to set CPU affinity: %m"); |
| |
| return 0; |
| } |
| |
| static int config_parse_show_status( |
| const char* unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| int k; |
| ShowStatus *b = data; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| k = parse_show_status(rvalue, b); |
| if (k < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| return 0; |
| } |
| |
| static int config_parse_output_restricted( |
| const char* unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| ExecOutput t, *eo = data; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| t = exec_output_from_string(rvalue); |
| if (t < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND)) { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file:, append: are not supported as defaults, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| *eo = t; |
| return 0; |
| } |
| |
| static int config_parse_crash_chvt( |
| const char* unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = parse_crash_chvt(rvalue); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| 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", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL }, |
| { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL }, |
| { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell }, |
| { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot }, |
| { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status }, |
| { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL }, |
| { "Manager", "JoinControllers", config_parse_warn_compat, DISABLED_CONFIGURATION, NULL }, |
| { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog }, |
| { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog }, |
| { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device }, |
| { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set }, |
| { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs }, |
| #if HAVE_SECCOMP |
| { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs }, |
| #endif |
| { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec }, |
| { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec }, |
| { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output }, |
| { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error }, |
| { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec }, |
| { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec }, |
| { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec }, |
| { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */ |
| { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval }, |
| { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst }, |
| { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment }, |
| { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit }, |
| { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit }, |
| { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit }, |
| { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit }, |
| { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit }, |
| { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit }, |
| { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit }, |
| { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit }, |
| { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit }, |
| { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit }, |
| { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit }, |
| { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit }, |
| { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit }, |
| { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit }, |
| { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit }, |
| { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit }, |
| { "Manager", "DefaultCPUAccounting", config_parse_tristate, 0, &arg_default_cpu_accounting }, |
| { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting }, |
| { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting }, |
| { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting }, |
| { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting }, |
| { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting }, |
| { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max }, |
| { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action }, |
| {} |
| }; |
| |
| const char *fn, *conf_dirs_nulstr; |
| |
| fn = arg_system ? |
| PKGSYSCONFDIR "/system.conf" : |
| PKGSYSCONFDIR "/user.conf"; |
| |
| conf_dirs_nulstr = arg_system ? |
| CONF_PATHS_NULSTR("systemd/system.conf.d") : |
| CONF_PATHS_NULSTR("systemd/user.conf.d"); |
| |
| (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL); |
| |
| /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY |
| * like everywhere else. */ |
| if (arg_default_timeout_start_usec <= 0) |
| arg_default_timeout_start_usec = USEC_INFINITY; |
| if (arg_default_timeout_stop_usec <= 0) |
| arg_default_timeout_stop_usec = USEC_INFINITY; |
| |
| return 0; |
| } |
| |
| static void set_manager_defaults(Manager *m) { |
| |
| assert(m); |
| |
| /* Propagates the various default unit property settings into the manager object, i.e. properties that do not |
| * affect the manager itself, but are just what newly allocated units will have set if they haven't set |
| * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */ |
| |
| m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec; |
| m->default_std_output = arg_default_std_output; |
| m->default_std_error = arg_default_std_error; |
| m->default_timeout_start_usec = arg_default_timeout_start_usec; |
| m->default_timeout_stop_usec = arg_default_timeout_stop_usec; |
| m->default_restart_usec = arg_default_restart_usec; |
| m->default_start_limit_interval = arg_default_start_limit_interval; |
| m->default_start_limit_burst = arg_default_start_limit_burst; |
| |
| /* On 4.15+ with unified hierarchy, CPU accounting is essentially free as it doesn't require the CPU |
| * controller to be enabled, so the default is to enable it unless we got told otherwise. */ |
| if (arg_default_cpu_accounting >= 0) |
| m->default_cpu_accounting = arg_default_cpu_accounting; |
| else |
| m->default_cpu_accounting = cpu_accounting_is_cheap(); |
| |
| m->default_io_accounting = arg_default_io_accounting; |
| m->default_ip_accounting = arg_default_ip_accounting; |
| m->default_blockio_accounting = arg_default_blockio_accounting; |
| m->default_memory_accounting = arg_default_memory_accounting; |
| m->default_tasks_accounting = arg_default_tasks_accounting; |
| m->default_tasks_max = arg_default_tasks_max; |
| |
| (void) manager_set_default_rlimits(m, arg_default_rlimit); |
| |
| (void) manager_default_environment(m); |
| (void) manager_transient_environment_add(m, arg_default_environment); |
| } |
| |
| static void set_manager_settings(Manager *m) { |
| |
| assert(m); |
| |
| /* Propagates the various manager settings into the manager object, i.e. properties that effect the manager |
| * itself (as opposed to just being inherited into newly allocated units, see set_manager_defaults() above). */ |
| |
| m->confirm_spawn = arg_confirm_spawn; |
| m->service_watchdogs = arg_service_watchdogs; |
| m->runtime_watchdog = arg_runtime_watchdog; |
| m->shutdown_watchdog = arg_shutdown_watchdog; |
| m->cad_burst_action = arg_cad_burst_action; |
| |
| manager_set_show_status(m, arg_show_status); |
| } |
| |
| 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_NO_PAGER, |
| ARG_VERSION, |
| ARG_DUMP_CONFIGURATION_ITEMS, |
| ARG_DUMP_BUS_PROPERTIES, |
| ARG_DUMP_CORE, |
| ARG_CRASH_CHVT, |
| ARG_CRASH_SHELL, |
| ARG_CRASH_REBOOT, |
| ARG_CONFIRM_SPAWN, |
| ARG_SHOW_STATUS, |
| ARG_DESERIALIZE, |
| ARG_SWITCHED_ROOT, |
| ARG_DEFAULT_STD_OUTPUT, |
| ARG_DEFAULT_STD_ERROR, |
| ARG_MACHINE_ID, |
| ARG_SERVICE_WATCHDOGS, |
| }; |
| |
| 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 }, |
| { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
| { "help", no_argument, NULL, 'h' }, |
| { "version", no_argument, NULL, ARG_VERSION }, |
| { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS }, |
| { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES }, |
| { "dump-core", optional_argument, NULL, ARG_DUMP_CORE }, |
| { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT }, |
| { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL }, |
| { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT }, |
| { "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 }, |
| { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, }, |
| { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, }, |
| { "machine-id", required_argument, NULL, ARG_MACHINE_ID }, |
| { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS }, |
| {} |
| }; |
| |
| int c, r; |
| |
| assert(argc >= 1); |
| assert(argv); |
| |
| if (getpid_cached() == 1) |
| opterr = 0; |
| |
| while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0) |
| |
| switch (c) { |
| |
| case ARG_LOG_LEVEL: |
| r = log_set_max_level_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse log level \"%s\": %m", optarg); |
| |
| break; |
| |
| case ARG_LOG_TARGET: |
| r = log_set_target_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse log target \"%s\": %m", optarg); |
| |
| break; |
| |
| case ARG_LOG_COLOR: |
| |
| if (optarg) { |
| r = log_show_color_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse log color setting \"%s\": %m", |
| optarg); |
| } else |
| log_show_color(true); |
| |
| break; |
| |
| case ARG_LOG_LOCATION: |
| if (optarg) { |
| r = log_show_location_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse log location setting \"%s\": %m", |
| optarg); |
| } else |
| log_show_location(true); |
| |
| break; |
| |
| case ARG_DEFAULT_STD_OUTPUT: |
| r = exec_output_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse default standard output setting \"%s\": %m", |
| optarg); |
| arg_default_std_output = r; |
| break; |
| |
| case ARG_DEFAULT_STD_ERROR: |
| r = exec_output_from_string(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse default standard error output setting \"%s\": %m", |
| optarg); |
| arg_default_std_error = r; |
| break; |
| |
| case ARG_UNIT: |
| r = free_and_strdup(&arg_default_unit, optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to set default unit \"%s\": %m", optarg); |
| |
| break; |
| |
| case ARG_SYSTEM: |
| arg_system = true; |
| break; |
| |
| case ARG_USER: |
| arg_system = false; |
| break; |
| |
| case ARG_TEST: |
| arg_action = ACTION_TEST; |
| break; |
| |
| case ARG_NO_PAGER: |
| arg_pager_flags |= PAGER_DISABLE; |
| break; |
| |
| case ARG_VERSION: |
| arg_action = ACTION_VERSION; |
| break; |
| |
| case ARG_DUMP_CONFIGURATION_ITEMS: |
| arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; |
| break; |
| |
| case ARG_DUMP_BUS_PROPERTIES: |
| arg_action = ACTION_DUMP_BUS_PROPERTIES; |
| break; |
| |
| case ARG_DUMP_CORE: |
| if (!optarg) |
| arg_dump_core = true; |
| else { |
| r = parse_boolean(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse dump core boolean: \"%s\": %m", |
| optarg); |
| arg_dump_core = r; |
| } |
| break; |
| |
| case ARG_CRASH_CHVT: |
| r = parse_crash_chvt(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse crash virtual terminal index: \"%s\": %m", |
| optarg); |
| break; |
| |
| case ARG_CRASH_SHELL: |
| if (!optarg) |
| arg_crash_shell = true; |
| else { |
| r = parse_boolean(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse crash shell boolean: \"%s\": %m", |
| optarg); |
| arg_crash_shell = r; |
| } |
| break; |
| |
| case ARG_CRASH_REBOOT: |
| if (!optarg) |
| arg_crash_reboot = true; |
| else { |
| r = parse_boolean(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse crash shell boolean: \"%s\": %m", |
| optarg); |
| arg_crash_reboot = r; |
| } |
| break; |
| |
| case ARG_CONFIRM_SPAWN: |
| arg_confirm_spawn = mfree(arg_confirm_spawn); |
| |
| r = parse_confirm_spawn(optarg, &arg_confirm_spawn); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse confirm spawn option: \"%s\": %m", |
| optarg); |
| break; |
| |
| case ARG_SERVICE_WATCHDOGS: |
| r = parse_boolean(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse service watchdogs boolean: \"%s\": %m", |
| optarg); |
| arg_service_watchdogs = r; |
| break; |
| |
| case ARG_SHOW_STATUS: |
| if (optarg) { |
| r = parse_show_status(optarg, &arg_show_status); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse show status boolean: \"%s\": %m", |
| optarg); |
| } else |
| arg_show_status = SHOW_STATUS_YES; |
| break; |
| |
| case ARG_DESERIALIZE: { |
| int fd; |
| FILE *f; |
| |
| r = safe_atoi(optarg, &fd); |
| if (r < 0) |
| log_error_errno(r, "Failed to parse deserialize option \"%s\": %m", optarg); |
| if (fd < 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Invalid deserialize fd: %d", |
| fd); |
| |
| (void) fd_cloexec(fd, true); |
| |
| f = fdopen(fd, "r"); |
| if (!f) |
| return log_error_errno(errno, "Failed to open serialization fd %d: %m", fd); |
| |
| safe_fclose(arg_serialization); |
| arg_serialization = f; |
| |
| break; |
| } |
| |
| case ARG_SWITCHED_ROOT: |
| arg_switched_root = true; |
| break; |
| |
| case ARG_MACHINE_ID: |
| r = set_machine_id(optarg); |
| if (r < 0) |
| return log_error_errno(r, "MachineID '%s' is not valid: %m", optarg); |
| 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 '?': |
| if (getpid_cached() != 1) |
| return -EINVAL; |
| else |
| return 0; |
| |
| default: |
| assert_not_reached("Unhandled option code."); |
| } |
| |
| if (optind < argc && getpid_cached() != 1) { |
| /* Hmm, when we aren't run as init system |
| * let's complain about excess arguments */ |
| |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Excess arguments."); |
| } |
| |
| return 0; |
| } |
| |
| static int help(void) { |
| _cleanup_free_ char *link = NULL; |
| int r; |
| |
| r = terminal_urlify_man("systemd", "1", &link); |
| if (r < 0) |
| return log_oom(); |
| |
| printf("%s [OPTIONS...]\n\n" |
| "Starts up and maintains the system or user services.\n\n" |
| " -h --help Show this help\n" |
| " --version Show version\n" |
| " --test Determine startup sequence, dump it and exit\n" |
| " --no-pager Do not pipe output into a pager\n" |
| " --dump-configuration-items Dump understood unit configuration items\n" |
| " --dump-bus-properties Dump exposed bus properties\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[=BOOL] Dump core on crash\n" |
| " --crash-vt=NR Change to specified VT on crash\n" |
| " --crash-reboot[=BOOL] Reboot on crash\n" |
| " --crash-shell[=BOOL] Run shell on crash\n" |
| " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n" |
| " --show-status[=BOOL] Show status updates on the console during bootup\n" |
| " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n" |
| " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n" |
| " --log-color[=BOOL] Highlight important log messages\n" |
| " --log-location[=BOOL] 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" |
| "\nSee the %s for details.\n" |
| , program_invocation_short_name |
| , link |
| ); |
| |
| return 0; |
| } |
| |
| static int prepare_reexecute( |
| Manager *m, |
| FILE **ret_f, |
| FDSet **ret_fds, |
| bool switching_root) { |
| |
| _cleanup_fdset_free_ FDSet *fds = NULL; |
| _cleanup_fclose_ FILE *f = NULL; |
| int r; |
| |
| assert(m); |
| assert(ret_f); |
| assert(ret_fds); |
| |
| r = manager_open_serialization(m, &f); |
| if (r < 0) |
| return log_error_errno(r, "Failed to create serialization file: %m"); |
| |
| /* Make sure nothing is really destructed when we shut down */ |
| m->n_reloading++; |
| bus_manager_send_reloading(m, true); |
| |
| fds = fdset_new(); |
| if (!fds) |
| return log_oom(); |
| |
| r = manager_serialize(m, f, fds, switching_root); |
| if (r < 0) |
| return r; |
| |
| if (fseeko(f, 0, SEEK_SET) == (off_t) -1) |
| return log_error_errno(errno, "Failed to rewind serialization fd: %m"); |
| |
| r = fd_cloexec(fileno(f), false); |
| if (r < 0) |
| return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m"); |
| |
| r = fdset_cloexec(fds, false); |
| if (r < 0) |
| return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m"); |
| |
| *ret_f = TAKE_PTR(f); |
| *ret_fds = TAKE_PTR(fds); |
| |
| return 0; |
| } |
| |
| static void bump_file_max_and_nr_open(void) { |
| |
| /* Let's bump fs.file-max and fs.nr_open to their respective maximums. On current kernels large numbers of file |
| * descriptors are no longer a performance problem and their memory is properly tracked by memcg, thus counting |
| * them and limiting them in another two layers of limits is unnecessary and just complicates things. This |
| * function hence turns off 2 of the 4 levels of limits on file descriptors, and makes RLIMIT_NOLIMIT (soft + |
| * hard) the only ones that really matter. */ |
| |
| #if BUMP_PROC_SYS_FS_FILE_MAX || BUMP_PROC_SYS_FS_NR_OPEN |
| _cleanup_free_ char *t = NULL; |
| int r; |
| #endif |
| |
| #if BUMP_PROC_SYS_FS_FILE_MAX |
| /* I so wanted to use STRINGIFY(ULONG_MAX) here, but alas we can't as glibc/gcc define that as |
| * "(0x7fffffffffffffffL * 2UL + 1UL)". Seriously. 😢 */ |
| if (asprintf(&t, "%lu\n", ULONG_MAX) < 0) { |
| log_oom(); |
| return; |
| } |
| |
| r = sysctl_write("fs/file-max", t); |
| if (r < 0) |
| log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.file-max, ignoring: %m"); |
| #endif |
| |
| #if BUMP_PROC_SYS_FS_FILE_MAX && BUMP_PROC_SYS_FS_NR_OPEN |
| t = mfree(t); |
| #endif |
| |
| #if BUMP_PROC_SYS_FS_NR_OPEN |
| int v = INT_MAX; |
| |
| /* Arg! The kernel enforces maximum and minimum values on the fs.nr_open, but we don't really know what they |
| * are. The expression by which the maximum is determined is dependent on the architecture, and is something we |
| * don't really want to copy to userspace, as it is dependent on implementation details of the kernel. Since |
| * the kernel doesn't expose the maximum value to us, we can only try and hope. Hence, let's start with |
| * INT_MAX, and then keep halving the value until we find one that works. Ugly? Yes, absolutely, but kernel |
| * APIs are kernel APIs, so what do can we do... 🤯 */ |
| |
| for (;;) { |
| int k; |
| |
| v &= ~(__SIZEOF_POINTER__ - 1); /* Round down to next multiple of the pointer size */ |
| if (v < 1024) { |
| log_warning("Can't bump fs.nr_open, value too small."); |
| break; |
| } |
| |
| k = read_nr_open(); |
| if (k < 0) { |
| log_error_errno(k, "Failed to read fs.nr_open: %m"); |
| break; |
| } |
| if (k >= v) { /* Already larger */ |
| log_debug("Skipping bump, value is already larger."); |
| break; |
| } |
| |
| if (asprintf(&t, "%i\n", v) < 0) { |
| log_oom(); |
| return; |
| } |
| |
| r = sysctl_write("fs/nr_open", t); |
| t = mfree(t); |
| if (r == -EINVAL) { |
| log_debug("Couldn't write fs.nr_open as %i, halving it.", v); |
| v /= 2; |
| continue; |
| } |
| if (r < 0) { |
| log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.nr_open, ignoring: %m"); |
| break; |
| } |
| |
| log_debug("Successfully bumped fs.nr_open to %i", v); |
| break; |
| } |
| #endif |
| } |
| |
| static int bump_rlimit_nofile(struct rlimit *saved_rlimit) { |
| struct rlimit new_rlimit; |
| int r, nr; |
| |
| 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) |
| return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m"); |
| |
| /* Get the underlying absolute limit the kernel enforces */ |
| nr = read_nr_open(); |
| |
| /* Make sure forked processes get limits based on the original kernel setting */ |
| if (!arg_default_rlimit[RLIMIT_NOFILE]) { |
| struct rlimit *rl; |
| |
| rl = newdup(struct rlimit, saved_rlimit, 1); |
| if (!rl) |
| return log_oom(); |
| |
| /* Bump the hard limit for system services to a substantially higher value. The default hard limit |
| * current kernels set is pretty low (4K), mostly for historical reasons. According to kernel |
| * developers, the fd handling in recent kernels has been optimized substantially enough, so that we |
| * can bump the limit now, without paying too high a price in memory or performance. Note however that |
| * we only bump the hard limit, not the soft limit. That's because select() works the way it works, and |
| * chokes on fds >= 1024. If we'd bump the soft limit globally, it might accidentally happen to |
| * unexpecting programs that they get fds higher than what they can process using select(). By only |
| * bumping the hard limit but leaving the low limit as it is we avoid this pitfall: programs that are |
| * written by folks aware of the select() problem in mind (and thus use poll()/epoll instead of |
| * select(), the way everybody should) can explicitly opt into high fds by bumping their soft limit |
| * beyond 1024, to the hard limit we pass. */ |
| if (arg_system) |
| rl->rlim_max = MIN((rlim_t) nr, MAX(rl->rlim_max, (rlim_t) HIGH_RLIMIT_NOFILE)); |
| |
| /* If for some reason we were invoked with a soft limit above 1024 (which should never |
| * happen!, but who knows what we get passed in from pam_limit when invoked as --user |
| * instance), then lower what we pass on to not confuse our children */ |
| rl->rlim_cur = MIN(rl->rlim_cur, (rlim_t) FD_SETSIZE); |
| |
| arg_default_rlimit[RLIMIT_NOFILE] = rl; |
| } |
| |
| /* Calculate the new limits to use for us. Never lower from what we inherited. */ |
| new_rlimit = (struct rlimit) { |
| .rlim_cur = MAX((rlim_t) nr, saved_rlimit->rlim_cur), |
| .rlim_max = MAX((rlim_t) nr, saved_rlimit->rlim_max), |
| }; |
| |
| /* Shortcut if nothing changes. */ |
| if (saved_rlimit->rlim_max >= new_rlimit.rlim_max && |
| saved_rlimit->rlim_cur >= new_rlimit.rlim_cur) { |
| log_debug("RLIMIT_NOFILE is already as high or higher than we need it, not bumping."); |
| return 0; |
| } |
| |
| /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows, for |
| * both hard and soft. */ |
| r = setrlimit_closest(RLIMIT_NOFILE, &new_rlimit); |
| if (r < 0) |
| return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static int bump_rlimit_memlock(struct rlimit *saved_rlimit) { |
| struct rlimit new_rlimit; |
| int r; |
| |
| assert(saved_rlimit); |
| |
| /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even if we have CAP_IPC_LOCK which should |
| * normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's bump |
| * the value high enough for our user. */ |
| |
| if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0) |
| return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m"); |
| |
| /* Pass the original value down to invoked processes */ |
| if (!arg_default_rlimit[RLIMIT_MEMLOCK]) { |
| struct rlimit *rl; |
| |
| rl = newdup(struct rlimit, saved_rlimit, 1); |
| if (!rl) |
| return log_oom(); |
| |
| arg_default_rlimit[RLIMIT_MEMLOCK] = rl; |
| } |
| |
| /* Using MAX() on resource limits only is safe if RLIM_INFINITY is > 0. POSIX declares that rlim_t |
| * must be unsigned, hence this is a given, but let's make this clear here. */ |
| assert_cc(RLIM_INFINITY > 0); |
| |
| new_rlimit = (struct rlimit) { |
| .rlim_cur = MAX(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_cur), |
| .rlim_max = MAX(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_max), |
| }; |
| |
| if (saved_rlimit->rlim_max >= new_rlimit.rlim_cur && |
| saved_rlimit->rlim_cur >= new_rlimit.rlim_max) { |
| log_debug("RLIMIT_MEMLOCK is already as high or higher than we need it, not bumping."); |
| return 0; |
| } |
| |
| r = setrlimit_closest(RLIMIT_MEMLOCK, &new_rlimit); |
| if (r < 0) |
| return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static void test_usr(void) { |
| |
| /* Check that /usr is either on the same file system as / or mounted already. */ |
| |
| if (dir_is_empty("/usr") <= 0) |
| return; |
| |
| log_warning("/usr appears to be on its own filesystem 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 int enforce_syscall_archs(Set *archs) { |
| #if HAVE_SECCOMP |
| int r; |
| |
| if (!is_seccomp_available()) |
| return 0; |
| |
| r = seccomp_restrict_archs(arg_syscall_archs); |
| if (r < 0) |
| return log_error_errno(r, "Failed to enforce system call architecture restrication: %m"); |
| #endif |
| return 0; |
| } |
| |
| static int status_welcome(void) { |
| _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL; |
| int r; |
| |
| if (IN_SET(arg_show_status, SHOW_STATUS_NO, SHOW_STATUS_AUTO)) |
| return 0; |
| |
| r = parse_os_release(NULL, |
| "PRETTY_NAME", &pretty_name, |
| "ANSI_COLOR", &ansi_color, |
| NULL); |
| if (r < 0) |
| log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, |
| "Failed to read os-release file, ignoring: %m"); |
| |
| if (log_get_show_color()) |
| return status_printf(NULL, 0, |
| "\nWelcome to \x1B[%sm%s\x1B[0m!\n", |
| isempty(ansi_color) ? "1" : ansi_color, |
| isempty(pretty_name) ? "Linux" : pretty_name); |
| else |
| return status_printf(NULL, 0, |
| "\nWelcome to %s!\n", |
| isempty(pretty_name) ? "Linux" : pretty_name); |
| } |
| |
| static int write_container_id(void) { |
| const char *c; |
| int r; |
| |
| c = getenv("container"); |
| if (isempty(c)) |
| return 0; |
| |
| RUN_WITH_UMASK(0022) |
| r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE); |
| if (r < 0) |
| return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m"); |
| |
| return 1; |
| } |
| |
| static int bump_unix_max_dgram_qlen(void) { |
| _cleanup_free_ char *qlen = NULL; |
| unsigned long v; |
| int r; |
| |
| /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value |
| * really really early during boot, so that it is actually applied to all our sockets, including the |
| * $NOTIFY_SOCKET one. */ |
| |
| r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen); |
| if (r < 0) |
| return log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, "Failed to read AF_UNIX datagram queue length, ignoring: %m"); |
| |
| r = safe_atolu(qlen, &v); |
| if (r < 0) |
| return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen); |
| |
| if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN) |
| return 0; |
| |
| r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", WRITE_STRING_FILE_DISABLE_BUFFER, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN); |
| if (r < 0) |
| return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, |
| "Failed to bump AF_UNIX datagram queue length, ignoring: %m"); |
| |
| return 1; |
| } |
| |
| static int fixup_environment(void) { |
| _cleanup_free_ char *term = NULL; |
| const char *t; |
| int r; |
| |
| /* Only fix up the environment when we are started as PID 1 */ |
| if (getpid_cached() != 1) |
| return 0; |
| |
| /* We expect the environment to be set correctly if run inside a container. */ |
| if (detect_container() > 0) |
| return 0; |
| |
| /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend |
| * device used by the console. We try to make a better guess here since some consoles might not have support |
| * for color mode for example. |
| * |
| * However if TERM was configured through the kernel command line then leave it alone. */ |
| r = proc_cmdline_get_key("TERM", 0, &term); |
| if (r < 0) |
| return r; |
| |
| t = term ?: default_term_for_tty("/dev/console"); |
| |
| if (setenv("TERM", t, 1) < 0) |
| return -errno; |
| |
| return 0; |
| } |
| |
| static void redirect_telinit(int argc, char *argv[]) { |
| |
| /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */ |
| |
| #if HAVE_SYSV_COMPAT |
| if (getpid_cached() == 1) |
| return; |
| |
| if (!strstr(program_invocation_short_name, "init")) |
| return; |
| |
| execv(SYSTEMCTL_BINARY_PATH, argv); |
| log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); |
| exit(EXIT_FAILURE); |
| #endif |
| } |
| |
| static int become_shutdown( |
| const char *shutdown_verb, |
| int retval) { |
| |
| char log_level[DECIMAL_STR_MAX(int) + 1], |
| exit_code[DECIMAL_STR_MAX(uint8_t) + 1], |
| timeout[DECIMAL_STR_MAX(usec_t) + 1]; |
| |
| const char* command_line[13] = { |
| SYSTEMD_SHUTDOWN_BINARY_PATH, |
| shutdown_verb, |
| "--timeout", timeout, |
| "--log-level", log_level, |
| "--log-target", |
| }; |
| |
| _cleanup_strv_free_ char **env_block = NULL; |
| size_t pos = 7; |
| int r; |
| |
| assert(shutdown_verb); |
| assert(!command_line[pos]); |
| env_block = strv_copy(environ); |
| |
| xsprintf(log_level, "%d", log_get_max_level()); |
| xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec); |
| |
| switch (log_get_target()) { |
| |
| case LOG_TARGET_KMSG: |
| case LOG_TARGET_JOURNAL_OR_KMSG: |
| case LOG_TARGET_SYSLOG_OR_KMSG: |
| command_line[pos++] = "kmsg"; |
| break; |
| |
| case LOG_TARGET_NULL: |
| command_line[pos++] = "null"; |
| break; |
| |
| case LOG_TARGET_CONSOLE: |
| default: |
| command_line[pos++] = "console"; |
| break; |
| }; |
| |
| if (log_get_show_color()) |
| command_line[pos++] = "--log-color"; |
| |
| if (log_get_show_location()) |
| command_line[pos++] = "--log-location"; |
| |
| if (streq(shutdown_verb, "exit")) { |
| command_line[pos++] = "--exit-code"; |
| command_line[pos++] = exit_code; |
| xsprintf(exit_code, "%d", retval); |
| } |
| |
| assert(pos < ELEMENTSOF(command_line)); |
| |
| if (streq(shutdown_verb, "reboot") && |
| arg_shutdown_watchdog > 0 && |
| arg_shutdown_watchdog != USEC_INFINITY) { |
| |
| char *e; |
| |
| /* If we reboot let's set the shutdown |
| * watchdog and tell the shutdown binary to |
| * repeatedly ping it */ |
| r = watchdog_set_timeout(&arg_shutdown_watchdog); |
| watchdog_close(r < 0); |
| |
| /* Tell the binary how often to ping, ignore failure */ |
| if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0) |
| (void) strv_consume(&env_block, e); |
| |
| if (arg_watchdog_device && |
| asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0) |
| (void) strv_consume(&env_block, e); |
| } else |
| watchdog_close(true); |
| |
| /* Avoid the creation of new processes forked by the |
| * kernel; at this point, we will not listen to the |
| * signals anyway */ |
| if (detect_container() <= 0) |
| (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER); |
| |
| execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block); |
| return -errno; |
| } |
| |
| static void initialize_clock(void) { |
| int r; |
| |
| if (clock_is_localtime(NULL) > 0) { |
| int min; |
| |
| /* |
| * The very first call of settimeofday() also does a time warp in the kernel. |
| * |
| * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care |
| * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves |
| * the RTC alone if the registry tells that the RTC runs in UTC. |
| */ |
| r = clock_set_timezone(&min); |
| if (r < 0) |
| log_error_errno(r, "Failed to apply local time delta, ignoring: %m"); |
| else |
| log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); |
| |
| } else if (!in_initrd()) { |
| /* |
| * Do a dummy very first call to seal the kernel's time warp magic. |
| * |
| * Do not call 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. |
| * |
| * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time |
| * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will |
| * be treated as UTC that way. |
| */ |
| (void) clock_reset_timewarp(); |
| } |
| |
| r = clock_apply_epoch(); |
| if (r < 0) |
| log_error_errno(r, "Current system time is before build time, but cannot correct: %m"); |
| else if (r > 0) |
| log_info("System time before build time, advancing clock."); |
| } |
| |
| static void initialize_coredump(bool skip_setup) { |
| #if ENABLE_COREDUMP |
| if (getpid_cached() != 1) |
| return; |
| |
| /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit) |
| * will process core dumps for system services by default. */ |
| if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0) |
| log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m"); |
| |
| /* But at the same time, turn off the core_pattern logic by default, so that no |
| * coredumps are stored until the systemd-coredump tool is enabled via |
| * sysctl. However it can be changed via the kernel command line later so core |
| * dumps can still be generated during early startup and in initramfs. */ |
| if (!skip_setup) |
| disable_coredumps(); |
| #endif |
| } |
| |
| static void initialize_core_pattern(bool skip_setup) { |
| int r; |
| |
| if (skip_setup || !arg_early_core_pattern) |
| return; |
| |
| if (getpid_cached() != 1) |
| return; |
| |
| r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, WRITE_STRING_FILE_DISABLE_BUFFER); |
| if (r < 0) |
| log_warning_errno(r, "Failed to write '%s' to /proc/sys/kernel/core_pattern, ignoring: %m", arg_early_core_pattern); |
| } |
| |
| static void do_reexecute( |
| int argc, |
| char *argv[], |
| const struct rlimit *saved_rlimit_nofile, |
| const struct rlimit *saved_rlimit_memlock, |
| FDSet *fds, |
| const char *switch_root_dir, |
| const char *switch_root_init, |
| const char **ret_error_message) { |
| |
| unsigned i, j, args_size; |
| const char **args; |
| int r; |
| |
| assert(saved_rlimit_nofile); |
| assert(saved_rlimit_memlock); |
| assert(ret_error_message); |
| |
| /* 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 RLIMIT_NOFILE + RLIMIT_MEMLOCK back to the kernel defaults, so that the new systemd can pass |
| * the kernel default to its child processes */ |
| if (saved_rlimit_nofile->rlim_cur != 0) |
| (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile); |
| if (saved_rlimit_memlock->rlim_cur != RLIM_INFINITY) |
| (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock); |
| |
| 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, true, arg_default_timeout_stop_usec); |
| |
| /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */ |
| r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE); |
| if (r < 0) |
| log_error_errno(r, "Failed to switch root, trying to continue: %m"); |
| } |
| |
| args_size = MAX(6, argc+1); |
| args = newa(const char*, args_size); |
| |
| if (!switch_root_init) { |
| char sfd[DECIMAL_STR_MAX(int) + 1]; |
| |
| /* 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(arg_serialization); |
| assert(fds); |
| |
| xsprintf(sfd, "%i", fileno(arg_serialization)); |
| |
| i = 0; |
| args[i++] = SYSTEMD_BINARY_PATH; |
| if (switch_root_dir) |
| args[i++] = "--switched-root"; |
| args[i++] = arg_system ? "--system" : "--user"; |
| args[i++] = "--deserialize"; |
| args[i++] = sfd; |
| args[i++] = NULL; |
| |
| assert(i <= args_size); |
| |
| /* |
| * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on |
| * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off |
| * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent, |
| * before proceeding into the exec(). |
| */ |
| valgrind_summary_hack(); |
| |
| (void) execv(args[0], (char* const*) args); |
| log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m"); |
| } |
| |
| /* 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.) */ |
| |
| arg_serialization = safe_fclose(arg_serialization); |
| fds = fdset_free(fds); |
| |
| /* Reopen the console */ |
| (void) make_console_stdio(); |
| |
| for (j = 1, i = 1; j < (unsigned) argc; j++) |
| args[i++] = argv[j]; |
| args[i++] = NULL; |
| assert(i <= args_size); |
| |
| /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */ |
| (void) reset_all_signal_handlers(); |
| (void) reset_signal_mask(); |
| (void) rlimit_nofile_safe(); |
| |
| if (switch_root_init) { |
| args[0] = switch_root_init; |
| (void) execv(args[0], (char* const*) args); |
| log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m"); |
| } |
| |
| args[0] = "/sbin/init"; |
| (void) execv(args[0], (char* const*) args); |
| r = -errno; |
| |
| manager_status_printf(NULL, STATUS_TYPE_EMERGENCY, |
| ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL, |
| "Failed to execute /sbin/init"); |
| |
| if (r == -ENOENT) { |
| log_warning("No /sbin/init, trying fallback"); |
| |
| args[0] = "/bin/sh"; |
| args[1] = NULL; |
| (void) execv(args[0], (char* const*) args); |
| log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m"); |
| } else |
| log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m"); |
| |
| *ret_error_message = "Failed to execute fallback shell"; |
| } |
| |
| static int invoke_main_loop( |
| Manager *m, |
| bool *ret_reexecute, |
| int *ret_retval, /* Return parameters relevant for shutting down */ |
| const char **ret_shutdown_verb, /* … */ |
| FDSet **ret_fds, /* Return parameters for reexecuting */ |
| char **ret_switch_root_dir, /* … */ |
| char **ret_switch_root_init, /* … */ |
| const char **ret_error_message) { |
| |
| int r; |
| |
| assert(m); |
| assert(ret_reexecute); |
| assert(ret_retval); |
| assert(ret_shutdown_verb); |
| assert(ret_fds); |
| assert(ret_switch_root_dir); |
| assert(ret_switch_root_init); |
| assert(ret_error_message); |
| |
| for (;;) { |
| r = manager_loop(m); |
| if (r < 0) { |
| *ret_error_message = "Failed to run main loop"; |
| return log_emergency_errno(r, "Failed to run main loop: %m"); |
| } |
| |
| switch ((ManagerObjective) r) { |
| |
| case MANAGER_RELOAD: { |
| LogTarget saved_log_target; |
| int saved_log_level; |
| |
| log_info("Reloading."); |
| |
| /* First, save any overridden log level/target, then parse the configuration file, which might |
| * change the log level to new settings. */ |
| |
| saved_log_level = m->log_level_overridden ? log_get_max_level() : -1; |
| saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID; |
| |
| r = parse_config_file(); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse config file, ignoring: %m"); |
| |
| set_manager_defaults(m); |
| |
| if (saved_log_level >= 0) |
| manager_override_log_level(m, saved_log_level); |
| if (saved_log_target >= 0) |
| manager_override_log_target(m, saved_log_target); |
| |
| r = manager_reload(m); |
| if (r < 0) |
| /* Reloading failed before the point of no return. Let's continue running as if nothing happened. */ |
| m->objective = MANAGER_OK; |
| |
| break; |
| } |
| |
| case MANAGER_REEXECUTE: |
| |
| r = prepare_reexecute(m, &arg_serialization, ret_fds, false); |
| if (r < 0) { |
| *ret_error_message = "Failed to prepare for reexecution"; |
| return r; |
| } |
| |
| log_notice("Reexecuting."); |
| |
| *ret_reexecute = true; |
| *ret_retval = EXIT_SUCCESS; |
| *ret_shutdown_verb = NULL; |
| *ret_switch_root_dir = *ret_switch_root_init = NULL; |
| |
| return 0; |
| |
| case MANAGER_SWITCH_ROOT: |
| if (!m->switch_root_init) { |
| r = prepare_reexecute(m, &arg_serialization, ret_fds, true); |
| if (r < 0) { |
| *ret_error_message = "Failed to prepare for reexecution"; |
| return r; |
| } |
| } else |
| *ret_fds = NULL; |
| |
| log_notice("Switching root."); |
| |
| *ret_reexecute = true; |
| *ret_retval = EXIT_SUCCESS; |
| *ret_shutdown_verb = NULL; |
| |
| /* Steal the switch root parameters */ |
| *ret_switch_root_dir = TAKE_PTR(m->switch_root); |
| *ret_switch_root_init = TAKE_PTR(m->switch_root_init); |
| |
| return 0; |
| |
| case MANAGER_EXIT: |
| |
| if (MANAGER_IS_USER(m)) { |
| log_debug("Exit."); |
| |
| *ret_reexecute = false; |
| *ret_retval = m->return_value; |
| *ret_shutdown_verb = NULL; |
| *ret_fds = NULL; |
| *ret_switch_root_dir = *ret_switch_root_init = NULL; |
| |
| return 0; |
| } |
| |
| _fallthrough_; |
| case MANAGER_REBOOT: |
| case MANAGER_POWEROFF: |
| case MANAGER_HALT: |
| case MANAGER_KEXEC: { |
| static const char * const table[_MANAGER_OBJECTIVE_MAX] = { |
| [MANAGER_EXIT] = "exit", |
| [MANAGER_REBOOT] = "reboot", |
| [MANAGER_POWEROFF] = "poweroff", |
| [MANAGER_HALT] = "halt", |
| [MANAGER_KEXEC] = "kexec", |
| }; |
| |
| log_notice("Shutting down."); |
| |
| *ret_reexecute = false; |
| *ret_retval = m->return_value; |
| assert_se(*ret_shutdown_verb = table[m->objective]); |
| *ret_fds = NULL; |
| *ret_switch_root_dir = *ret_switch_root_init = NULL; |
| |
| return 0; |
| } |
| |
| default: |
| assert_not_reached("Unknown or unexpected manager objective."); |
| } |
| } |
| } |
| |
| static void log_execution_mode(bool *ret_first_boot) { |
| assert(ret_first_boot); |
| |
| if (arg_system) { |
| int v; |
| |
| log_info("systemd " GIT_VERSION " running in %ssystem mode. (" SYSTEMD_FEATURES ")", |
| arg_action == ACTION_TEST ? "test " : "" ); |
| |
| v = detect_virtualization(); |
| if (v > 0) |
| log_info("Detected virtualization %s.", virtualization_to_string(v)); |
| |
| log_info("Detected architecture %s.", architecture_to_string(uname_architecture())); |
| |
| if (in_initrd()) { |
| *ret_first_boot = false; |
| log_info("Running in initial RAM disk."); |
| } else { |
| /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use |
| * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it |
| * doesn't it's unpopulated. This allows container managers and installers to provision a |
| * couple of files already. If the container manager wants to provision the machine ID itself |
| * it should pass $container_uuid to PID 1. */ |
| |
| *ret_first_boot = access("/etc/machine-id", F_OK) < 0; |
| if (*ret_first_boot) |
| log_info("Running with unpopulated /etc."); |
| } |
| } else { |
| if (DEBUG_LOGGING) { |
| _cleanup_free_ char *t; |
| |
| t = uid_to_name(getuid()); |
| log_debug("systemd " GIT_VERSION " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")", |
| arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t)); |
| } |
| |
| *ret_first_boot = false; |
| } |
| } |
| |
| static int initialize_runtime( |
| bool skip_setup, |
| struct rlimit *saved_rlimit_nofile, |
| struct rlimit *saved_rlimit_memlock, |
| const char **ret_error_message) { |
| |
| int r; |
| |
| assert(ret_error_message); |
| |
| /* Sets up various runtime parameters. Many of these initializations are conditionalized: |
| * |
| * - Some only apply to --system instances |
| * - Some only apply to --user instances |
| * - Some only apply when we first start up, but not when we reexecute |
| */ |
| |
| if (arg_action != ACTION_RUN) |
| return 0; |
| |
| if (arg_system) { |
| /* Make sure we leave a core dump without panicing the kernel. */ |
| install_crash_handler(); |
| |
| if (!skip_setup) { |
| r = mount_cgroup_controllers(); |
| if (r < 0) { |
| *ret_error_message = "Failed to mount cgroup hierarchies"; |
| return r; |
| } |
| |
| status_welcome(); |
| hostname_setup(); |
| machine_id_setup(NULL, arg_machine_id, NULL); |
| loopback_setup(); |
| bump_unix_max_dgram_qlen(); |
| bump_file_max_and_nr_open(); |
| test_usr(); |
| write_container_id(); |
| } |
| |
| if (arg_watchdog_device) { |
| r = watchdog_set_device(arg_watchdog_device); |
| if (r < 0) |
| log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device); |
| } |
| |
| if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY) |
| watchdog_set_timeout(&arg_runtime_watchdog); |
| } |
| |
| if (arg_timer_slack_nsec != NSEC_INFINITY) |
| if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0) |
| log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m"); |
| |
| if (arg_system && !cap_test_all(arg_capability_bounding_set)) { |
| r = capability_bounding_set_drop_usermode(arg_capability_bounding_set); |
| if (r < 0) { |
| *ret_error_message = "Failed to drop capability bounding set of usermode helpers"; |
| return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m"); |
| } |
| |
| r = capability_bounding_set_drop(arg_capability_bounding_set, true); |
| if (r < 0) { |
| *ret_error_message = "Failed to drop capability bounding set"; |
| return log_emergency_errno(r, "Failed to drop capability bounding set: %m"); |
| } |
| } |
| |
| if (arg_system && arg_no_new_privs) { |
| if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) { |
| *ret_error_message = "Failed to disable new privileges"; |
| return log_emergency_errno(errno, "Failed to disable new privileges: %m"); |
| } |
| } |
| |
| if (arg_syscall_archs) { |
| r = enforce_syscall_archs(arg_syscall_archs); |
| if (r < 0) { |
| *ret_error_message = "Failed to set syscall architectures"; |
| return r; |
| } |
| } |
| |
| if (!arg_system) |
| /* Become reaper of our children */ |
| if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) |
| log_warning_errno(errno, "Failed to make us a subreaper: %m"); |
| |
| /* Bump up RLIMIT_NOFILE for systemd itself */ |
| (void) bump_rlimit_nofile(saved_rlimit_nofile); |
| (void) bump_rlimit_memlock(saved_rlimit_memlock); |
| |
| return 0; |
| } |
| |
| static int do_queue_default_job( |
| Manager *m, |
| const char **ret_error_message) { |
| |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| Job *default_unit_job; |
| Unit *target = NULL; |
| int r; |
| |
| log_debug("Activating default unit: %s", arg_default_unit); |
| |
| r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target); |
| if (r < 0) { |
| log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET); |
| |
| r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target); |
| if (r < 0) { |
| *ret_error_message = r == -ERFKILL ? "Rescue target masked" |
| : "Failed to load rescue target"; |
| return r; |
| } |
| } |
| |
| assert(target->load_state == UNIT_LOADED); |
| |
| r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, NULL, &error, &default_unit_job); |
| if (r == -EPERM) { |
| log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r)); |
| |
| sd_bus_error_free(&error); |
| |
| r = manager_add_job(m, JOB_START, target, JOB_REPLACE, NULL, &error, &default_unit_job); |
| if (r < 0) { |
| *ret_error_message = "Failed to start default target"; |
| return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r)); |
| } |
| |
| } else if (r < 0) { |
| *ret_error_message = "Failed to isolate default target"; |
| return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r)); |
| } |
| |
| m->default_unit_job_id = default_unit_job->id; |
| |
| return 0; |
| } |
| |
| static void free_arguments(void) { |
| |
| /* Frees all arg_* variables, with the exception of arg_serialization */ |
| rlimit_free_all(arg_default_rlimit); |
| |
| arg_default_unit = mfree(arg_default_unit); |
| arg_confirm_spawn = mfree(arg_confirm_spawn); |
| arg_default_environment = strv_free(arg_default_environment); |
| arg_syscall_archs = set_free(arg_syscall_archs); |
| } |
| |
| static int load_configuration(int argc, char **argv, const char **ret_error_message) { |
| int r; |
| |
| assert(ret_error_message); |
| |
| arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U); |
| |
| r = parse_config_file(); |
| if (r < 0) { |
| *ret_error_message = "Failed to parse config file"; |
| return r; |
| } |
| |
| if (arg_system) { |
| r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
| if (r < 0) |
| log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
| } |
| |
| /* Note that this also parses bits from the kernel command line, including "debug". */ |
| log_parse_environment(); |
| |
| r = parse_argv(argc, argv); |
| if (r < 0) { |
| *ret_error_message = "Failed to parse commandline arguments"; |
| return r; |
| } |
| |
| /* Initialize default unit */ |
| if (!arg_default_unit) { |
| arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET); |
| if (!arg_default_unit) { |
| *ret_error_message = "Failed to set default unit"; |
| return log_oom(); |
| } |
| } |
| |
| /* Initialize the show status setting if it hasn't been set explicitly yet */ |
| if (arg_show_status == _SHOW_STATUS_INVALID) |
| arg_show_status = SHOW_STATUS_YES; |
| |
| return 0; |
| } |
| |
| static int safety_checks(void) { |
| |
| if (getpid_cached() == 1 && |
| arg_action != ACTION_RUN) |
| return log_error_errno(SYNTHETIC_ERRNO(EPERM), |
| "Unsupported execution mode while PID 1."); |
| |
| if (getpid_cached() == 1 && |
| !arg_system) |
| return log_error_errno(SYNTHETIC_ERRNO(EPERM), |
| "Can't run --user mode as PID 1."); |
| |
| if (arg_action == ACTION_RUN && |
| arg_system && |
| getpid_cached() != 1) |
| return log_error_errno(SYNTHETIC_ERRNO(EPERM), |
| "Can't run system mode unless PID 1."); |
| |
| if (arg_action == ACTION_TEST && |
| geteuid() == 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EPERM), |
| "Don't run test mode as root."); |
| |
| if (!arg_system && |
| arg_action == ACTION_RUN && |
| sd_booted() <= 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), |
| "Trying to run as user instance, but the system has not been booted with systemd."); |
| |
| if (!arg_system && |
| arg_action == ACTION_RUN && |
| !getenv("XDG_RUNTIME_DIR")) |
| return log_error_errno(SYNTHETIC_ERRNO(EUNATCH), |
| "Trying to run as user instance, but $XDG_RUNTIME_DIR is not set."); |
| |
| if (arg_system && |
| arg_action == ACTION_RUN && |
| running_in_chroot() > 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), |
| "Cannot be run in a chroot() environment."); |
| |
| return 0; |
| } |
| |
| static int initialize_security( |
| bool *loaded_policy, |
| dual_timestamp *security_start_timestamp, |
| dual_timestamp *security_finish_timestamp, |
| const char **ret_error_message) { |
| |
| int r; |
| |
| assert(loaded_policy); |
| assert(security_start_timestamp); |
| assert(security_finish_timestamp); |
| assert(ret_error_message); |
| |
| dual_timestamp_get(security_start_timestamp); |
| |
| r = mac_selinux_setup(loaded_policy); |
| if (r < 0) { |
| *ret_error_message = "Failed to load SELinux policy"; |
| return r; |
| } |
| |
| r = mac_smack_setup(loaded_policy); |
| if (r < 0) { |
| *ret_error_message = "Failed to load SMACK policy"; |
| return r; |
| } |
| |
| r = ima_setup(); |
| if (r < 0) { |
| *ret_error_message = "Failed to load IMA policy"; |
| return r; |
| } |
| |
| dual_timestamp_get(security_finish_timestamp); |
| return 0; |
| } |
| |
| static void test_summary(Manager *m) { |
| assert(m); |
| |
| printf("-> By units:\n"); |
| manager_dump_units(m, stdout, "\t"); |
| |
| printf("-> By jobs:\n"); |
| manager_dump_jobs(m, stdout, "\t"); |
| } |
| |
| static int collect_fds(FDSet **ret_fds, const char **ret_error_message) { |
| int r; |
| |
| assert(ret_fds); |
| assert(ret_error_message); |
| |
| r = fdset_new_fill(ret_fds); |
| if (r < 0) { |
| *ret_error_message = "Failed to allocate fd set"; |
| return log_emergency_errno(r, "Failed to allocate fd set: %m"); |
| } |
| |
| fdset_cloexec(*ret_fds, true); |
| |
| if (arg_serialization) |
| assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0); |
| |
| return 0; |
| } |
| |
| static void setup_console_terminal(bool skip_setup) { |
| |
| if (!arg_system) |
| return; |
| |
| /* Become a session leader if we aren't one yet. */ |
| (void) setsid(); |
| |
| /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling |
| * tty. */ |
| (void) release_terminal(); |
| |
| /* Reset the console, but only if this is really init and we are freshly booted */ |
| if (getpid_cached() == 1 && !skip_setup) |
| (void) console_setup(); |
| } |
| |
| static bool early_skip_setup_check(int argc, char *argv[]) { |
| bool found_deserialize = false; |
| int i; |
| |
| /* 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. Note that if we have switched root, do all the special setup things |
| * anyway, even if in that case we also do deserialization. */ |
| |
| for (i = 1; i < argc; i++) { |
| if (streq(argv[i], "--switched-root")) |
| return false; /* If we switched root, don't skip the setup. */ |
| else if (streq(argv[i], "--deserialize")) |
| found_deserialize = true; |
| } |
| |
| return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */ |
| } |
| |
| int main(int argc, char *argv[]) { |
| |
| dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL, |
| security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL; |
| struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), |
| saved_rlimit_memlock = RLIMIT_MAKE_CONST(RLIM_INFINITY); /* The original rlimits we passed |
| * in. Note we use different values |
| * for the two that indicate whether |
| * these fields are initialized! */ |
| bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false; |
| char *switch_root_dir = NULL, *switch_root_init = NULL; |
| usec_t before_startup, after_startup; |
| static char systemd[] = "systemd"; |
| char timespan[FORMAT_TIMESPAN_MAX]; |
| const char *shutdown_verb = NULL, *error_message = NULL; |
| int r, retval = EXIT_FAILURE; |
| Manager *m = NULL; |
| FDSet *fds = NULL; |
| |
| /* SysV compatibility: redirect init → telinit */ |
| redirect_telinit(argc, argv); |
| |
| /* Take timestamps early on */ |
| dual_timestamp_from_monotonic(&kernel_timestamp, 0); |
| dual_timestamp_get(&userspace_timestamp); |
| |
| /* Figure out whether we need to do initialize the system, or if we already did that because we are |
| * reexecuting */ |
| skip_setup = early_skip_setup_check(argc, argv); |
| |
| /* 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; |
| (void) prctl(PR_SET_NAME, systemd); |
| |
| /* Save the original command line */ |
| save_argc_argv(argc, argv); |
| |
| /* Make sure that if the user says "syslog" we actually log to the journal. */ |
| log_set_upgrade_syslog_to_journal(true); |
| |
| if (getpid_cached() == 1) { |
| /* When we run as PID 1 force system mode */ |
| arg_system = true; |
| |
| /* Disable the umask logic */ |
| umask(0); |
| |
| /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be |
| * activated yet (even though the log socket for it exists). */ |
| log_set_prohibit_ipc(true); |
| |
| /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is |
| * important so that we never end up logging to any foreign stderr, for example if we have to log in a |
| * child process right before execve()'ing the actual binary, at a point in time where socket |
| * activation stderr/stdout area already set up. */ |
| log_set_always_reopen_console(true); |
| |
| if (detect_container() <= 0) { |
| |
| /* Running outside of a container as PID 1 */ |
| log_set_target(LOG_TARGET_KMSG); |
| log_open(); |
| |
| if (in_initrd()) |
| initrd_timestamp = userspace_timestamp; |
| |
| if (!skip_setup) { |
| r = mount_setup_early(); |
| if (r < 0) { |
| error_message = "Failed to mount early API filesystems"; |
| goto finish; |
| } |
| |
| r = initialize_security( |
| &loaded_policy, |
| &security_start_timestamp, |
| &security_finish_timestamp, |
| &error_message); |
| if (r < 0) |
| goto finish; |
| } |
| |
| if (mac_selinux_init() < 0) { |
| error_message = "Failed to initialize SELinux policy"; |
| goto finish; |
| } |
| |
| if (!skip_setup) |
| initialize_clock(); |
| |
| /* 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 { |
| /* Running inside a container, as PID 1 */ |
| log_set_target(LOG_TARGET_CONSOLE); |
| log_open(); |
| |
| /* For later on, see above... */ |
| log_set_target(LOG_TARGET_JOURNAL); |
| |
| /* clear the kernel timestamp, |
| * because we are in a container */ |
| kernel_timestamp = DUAL_TIMESTAMP_NULL; |
| } |
| |
| initialize_coredump(skip_setup); |
| |
| r = fixup_environment(); |
| if (r < 0) { |
| log_emergency_errno(r, "Failed to fix up PID 1 environment: %m"); |
| error_message = "Failed to fix up PID1 environment"; |
| goto finish; |
| } |
| |
| } else { |
| /* Running as user instance */ |
| arg_system = false; |
| log_set_target(LOG_TARGET_AUTO); |
| log_open(); |
| |
| /* clear the kernel timestamp, |
| * because we are not PID 1 */ |
| kernel_timestamp = DUAL_TIMESTAMP_NULL; |
| } |
| |
| if (arg_system) { |
| /* Try to figure out if we can use colors with the console. No need to do that for user instances since |
| * they never log into the console. */ |
| log_show_color(colors_enabled()); |
| |
| r = make_null_stdio(); |
| if (r < 0) |
| log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m"); |
| } |
| |
| /* Mount /proc, /sys and friends, so that /proc/cmdline and |
| * /proc/$PID/fd is available. */ |
| if (getpid_cached() == 1) { |
| |
| /* Load the kernel modules early. */ |
| if (!skip_setup) |
| kmod_setup(); |
| |
| r = mount_setup(loaded_policy); |
| if (r < 0) { |
| error_message = "Failed to mount API filesystems"; |
| goto finish; |
| } |
| } |
| |
| /* Reset all signal handlers. */ |
| (void) reset_all_signal_handlers(); |
| (void) ignore_signals(SIGNALS_IGNORE, -1); |
| |
| r = load_configuration(argc, argv, &error_message); |
| if (r < 0) |
| goto finish; |
| |
| r = safety_checks(); |
| if (r < 0) |
| goto finish; |
| |
| if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES)) |
| (void) pager_open(arg_pager_flags); |
| |
| if (arg_action != ACTION_RUN) |
| skip_setup = true; |
| |
| if (arg_action == ACTION_HELP) { |
| retval = help() < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| 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_DUMP_BUS_PROPERTIES) { |
| dump_bus_properties(stdout); |
| retval = EXIT_SUCCESS; |
| goto finish; |
| } |
| |
| assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST)); |
| |
| /* Move out of the way, so that we won't block unmounts */ |
| assert_se(chdir("/") == 0); |
| |
| if (arg_action == ACTION_RUN) { |
| |
| /* A core pattern might have been specified via the cmdline. */ |
| initialize_core_pattern(skip_setup); |
| |
| /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */ |
| log_close(); |
| |
| /* Remember open file descriptors for later deserialization */ |
| r = collect_fds(&fds, &error_message); |
| if (r < 0) |
| goto finish; |
| |
| /* Give up any control of the console, but make sure its initialized. */ |
| setup_console_terminal(skip_setup); |
| |
| /* Open the logging devices, if possible and necessary */ |
| log_open(); |
| } |
| |
| log_execution_mode(&first_boot); |
| |
| r = initialize_runtime(skip_setup, |
| &saved_rlimit_nofile, |
| &saved_rlimit_memlock, |
| &error_message); |
| if (r < 0) |
| goto finish; |
| |
| r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
| arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0, |
| &m); |
| if (r < 0) { |
| log_emergency_errno(r, "Failed to allocate manager object: %m"); |
| error_message = "Failed to allocate manager object"; |
| goto finish; |
| } |
| |
| m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp; |
| m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp; |
| m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp; |
| m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_START)] = security_start_timestamp; |
| m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_FINISH)] = security_finish_timestamp; |
| |
| set_manager_defaults(m); |
| set_manager_settings(m); |
| manager_set_first_boot(m, first_boot); |
| |
| /* Remember whether we should queue the default job */ |
| queue_default_job = !arg_serialization || arg_switched_root; |
| |
| before_startup = now(CLOCK_MONOTONIC); |
| |
| r = manager_startup(m, arg_serialization, fds); |
| if (r < 0) { |
| error_message = "Failed to start up manager"; |
| goto finish; |
| } |
| |
| /* This will close all file descriptors that were opened, but not claimed by any unit. */ |
| fds = fdset_free(fds); |
| arg_serialization = safe_fclose(arg_serialization); |
| |
| if (queue_default_job) { |
| r = do_queue_default_job(m, &error_message); |
| if (r < 0) |
| goto finish; |
| } |
| |
| 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, 100 * USEC_PER_MSEC)); |
| |
| if (arg_action == ACTION_TEST) { |
| test_summary(m); |
| retval = EXIT_SUCCESS; |
| goto finish; |
| } |
| |
| (void) invoke_main_loop(m, |
| &reexecute, |
| &retval, |
| &shutdown_verb, |
| &fds, |
| &switch_root_dir, |
| &switch_root_init, |
| &error_message); |
| |
| finish: |
| pager_close(); |
| |
| if (m) { |
| arg_shutdown_watchdog = m->shutdown_watchdog; |
| m = manager_free(m); |
| } |
| |
| free_arguments(); |
| mac_selinux_finish(); |
| |
| if (reexecute) |
| do_reexecute(argc, argv, |
| &saved_rlimit_nofile, |
| &saved_rlimit_memlock, |
| fds, |
| switch_root_dir, |
| switch_root_init, |
| &error_message); /* This only returns if reexecution failed */ |
| |
| arg_serialization = safe_fclose(arg_serialization); |
| fds = fdset_free(fds); |
| |
| #if HAVE_VALGRIND_VALGRIND_H |
| /* If we are PID 1 and running under valgrind, then let's exit |
| * here explicitly. valgrind will only generate nice output on |
| * exit(), not on exec(), hence let's do the former not the |
| * latter here. */ |
| if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) { |
| /* Cleanup watchdog_device strings for valgrind. We need them |
| * in become_shutdown() so normally we cannot free them yet. */ |
| watchdog_free_device(); |
| arg_watchdog_device = mfree(arg_watchdog_device); |
| return retval; |
| } |
| #endif |
| |
| #if HAS_FEATURE_ADDRESS_SANITIZER |
| __lsan_do_leak_check(); |
| #endif |
| |
| if (shutdown_verb) { |
| r = become_shutdown(shutdown_verb, retval); |
| log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting"); |
| error_message = "Failed to execute shutdown binary"; |
| } |
| |
| watchdog_free_device(); |
| arg_watchdog_device = mfree(arg_watchdog_device); |
| |
| if (getpid_cached() == 1) { |
| if (error_message) |
| manager_status_printf(NULL, STATUS_TYPE_EMERGENCY, |
| ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL, |
| "%s.", error_message); |
| freeze_or_exit_or_reboot(); |
| } |
| |
| return retval; |
| } |