+++ /dev/null
-/*-*- 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 <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <getopt.h>
-#include <signal.h>
-#include <fcntl.h>
-#include <sys/prctl.h>
-#include <sys/mount.h>
-
-#ifdef HAVE_VALGRIND_VALGRIND_H
-#include <valgrind/valgrind.h>
-#endif
-#ifdef HAVE_SECCOMP
-#include <seccomp.h>
-#endif
-
-#include "sd-daemon.h"
-#include "sd-bus.h"
-#include "log.h"
-#include "fdset.h"
-#include "special.h"
-#include "conf-parser.h"
-#include "missing.h"
-#include "pager.h"
-#include "build.h"
-#include "strv.h"
-#include "def.h"
-#include "virt.h"
-#include "architecture.h"
-#include "watchdog.h"
-#include "switch-root.h"
-#include "capability.h"
-#include "killall.h"
-#include "env-util.h"
-#include "clock-util.h"
-#include "fileio.h"
-#include "bus-error.h"
-#include "bus-util.h"
-#include "selinux-util.h"
-#include "manager.h"
-#include "dbus-manager.h"
-#include "load-fragment.h"
-
-#include "mount-setup.h"
-#include "loopback-setup.h"
-#include "hostname-setup.h"
-#include "machine-id-setup.h"
-#include "selinux-setup.h"
-#include "ima-setup.h"
-#include "smack-setup.h"
-#include "kmod-setup.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 ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
-static bool arg_switched_root = false;
-static int arg_no_pager = -1;
-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_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_default_environment = NULL;
-static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
-static uint64_t arg_capability_bounding_set_drop = 0;
-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 bool arg_default_cpu_accounting = false;
-static bool arg_default_blockio_accounting = false;
-static bool arg_default_memory_accounting = false;
-
-static void nop_handler(int sig) {}
-
-static void pager_open_if_enabled(void) {
-
- if (arg_no_pager <= 0)
- return;
-
- pager_open(false);
-}
-
-noreturn static void crash(int sig) {
-
- if (getpid() != 1)
- /* Pass this on immediately, if this is not PID 1 */
- raise(sig);
- else if (!arg_dump_core)
- log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
- else {
- struct sigaction sa = {
- .sa_handler = nop_handler,
- .sa_flags = SA_NOCLDSTOP|SA_RESTART,
- };
- pid_t pid;
-
- /* We want to wait for the core process, hence let's enable SIGCHLD */
- sigaction(SIGCHLD, &sa, NULL);
-
- pid = raw_clone(SIGCHLD, NULL);
- if (pid < 0)
- log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
-
- else if (pid == 0) {
- struct rlimit rl = {};
-
- /* Enable default signal handler for core dump */
- zero(sa);
- sa.sa_handler = SIG_DFL;
- sigaction(sig, &sa, NULL);
-
- /* Don't limit the core dump size */
- rl.rlim_cur = RLIM_INFINITY;
- rl.rlim_max = RLIM_INFINITY;
- setrlimit(RLIMIT_CORE, &rl);
-
- /* Just to be sure... */
- (void) chdir("/");
-
- /* Raise the signal again */
- pid = raw_getpid();
- kill(pid, sig); /* raise() would kill the parent */
-
- assert_not_reached("We shouldn't be here...");
- _exit(1);
- } 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_FULL)
- : 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)
- chvt(arg_crash_chvt);
-
- if (arg_crash_shell) {
- struct sigaction sa = {
- .sa_handler = SIG_IGN,
- .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
- };
- pid_t pid;
-
- log_info("Executing crash shell in 10s...");
- sleep(10);
-
- /* Let the kernel reap children for us */
- assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
-
- pid = raw_clone(SIGCHLD, NULL);
- if (pid < 0)
- log_emergency_errno(errno, "Failed to fork off crash shell: %m");
- else if (pid == 0) {
- make_console_stdio();
- execle("/bin/sh", "/bin/sh", NULL, environ);
-
- log_emergency_errno(errno, "execle() failed: %m");
- _exit(1);
- } else
- log_info("Successfully spawned crash shell as PID "PID_FMT".", pid);
- }
-
- log_emergency("Freezing execution.");
- freeze();
-}
-
-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 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_item(const char *key, const char *value) {
-
- static const char * const rlmap[] = {
- "emergency", SPECIAL_EMERGENCY_TARGET,
- "-b", SPECIAL_EMERGENCY_TARGET,
- "rescue", SPECIAL_RESCUE_TARGET,
- "single", SPECIAL_RESCUE_TARGET,
- "-s", SPECIAL_RESCUE_TARGET,
- "s", SPECIAL_RESCUE_TARGET,
- "S", SPECIAL_RESCUE_TARGET,
- "1", SPECIAL_RESCUE_TARGET,
- "2", SPECIAL_MULTI_USER_TARGET,
- "3", SPECIAL_MULTI_USER_TARGET,
- "4", SPECIAL_MULTI_USER_TARGET,
- "5", SPECIAL_GRAPHICAL_TARGET,
- };
- int r;
-
- assert(key);
-
- if (streq(key, "systemd.unit") && value) {
-
- if (!in_initrd())
- return set_default_unit(value);
-
- } else if (streq(key, "rd.systemd.unit") && value) {
-
- if (in_initrd())
- return set_default_unit(value);
-
- } else if (streq(key, "systemd.dump_core") && value) {
-
- r = parse_boolean(value);
- if (r < 0)
- log_warning("Failed to parse dump core switch %s. Ignoring.", value);
- else
- arg_dump_core = r;
-
- } else if (streq(key, "systemd.crash_shell") && value) {
-
- r = parse_boolean(value);
- if (r < 0)
- log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
- else
- arg_crash_shell = r;
-
- } else if (streq(key, "systemd.crash_chvt") && value) {
-
- if (safe_atoi(value, &r) < 0)
- log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
- else
- arg_crash_chvt = r;
-
- } else if (streq(key, "systemd.confirm_spawn") && value) {
-
- r = parse_boolean(value);
- if (r < 0)
- log_warning("Failed to parse confirm spawn switch %s. Ignoring.", value);
- else
- arg_confirm_spawn = r;
-
- } else if (streq(key, "systemd.show_status") && value) {
-
- r = parse_show_status(value, &arg_show_status);
- if (r < 0)
- log_warning("Failed to parse show status switch %s. Ignoring.", value);
-
- } else if (streq(key, "systemd.default_standard_output") && value) {
-
- r = exec_output_from_string(value);
- if (r < 0)
- log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
- else
- arg_default_std_output = r;
-
- } else if (streq(key, "systemd.default_standard_error") && value) {
-
- r = exec_output_from_string(value);
- if (r < 0)
- log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
- else
- arg_default_std_error = r;
-
- } else if (streq(key, "systemd.setenv") && value) {
-
- if (env_assignment_is_valid(value)) {
- char **env;
-
- env = strv_env_set(arg_default_environment, value);
- if (env)
- arg_default_environment = env;
- else
- log_warning_errno(ENOMEM, "Setting environment variable '%s' failed, ignoring: %m", value);
- } else
- log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
-
- } else if (streq(key, "quiet") && !value) {
-
- if (arg_show_status == _SHOW_STATUS_UNSET)
- 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(NULL) > 0)
- log_set_target(LOG_TARGET_CONSOLE);
-
- } else if (!in_initrd() && !value) {
- unsigned i;
-
- /* SysV compatibility */
- for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
- if (streq(key, rlmap[i]))
- return set_default_unit(rlmap[i+1]);
- }
-
- 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': %s", \
- rvalue, strerror(-r)); \
- \
- 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) {
-
- const char *word, *state;
- size_t l;
- cpu_set_t *c = NULL;
- unsigned ncpus = 0;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
-
- FOREACH_WORD_QUOTED(word, l, rvalue, state) {
- char *t;
- int r;
- unsigned cpu;
-
- if (!(t = strndup(word, 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_syntax(unit, LOG_ERR, filename, line, -r,
- "Failed to parse CPU affinity '%s'", rvalue);
- CPU_FREE(c);
- return -EBADMSG;
- }
-
- CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
- }
- if (!isempty(state))
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Trailing garbage, ignoring.");
-
- if (c) {
- if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
- log_unit_warning(unit, "Failed to set CPU affinity: %m");
-
- CPU_FREE(c);
- }
-
- 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 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) {
- strv_free_free(arg_join_controllers);
- arg_join_controllers = NULL;
-}
-
-static int config_parse_join_controllers(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) {
-
- unsigned n = 0;
- const char *word, *state;
- size_t length;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
-
- free_join_controllers();
-
- FOREACH_WORD_QUOTED(word, length, rvalue, state) {
- char *s, **l;
-
- s = strndup(word, 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)) {
- if (strv_extend_strv(&l, *a) < 0) {
- strv_free(l);
- strv_free_free(t);
- return log_oom();
- }
-
- } 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;
- }
- }
- if (!isempty(state))
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Trailing garbage, ignoring.");
-
- 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_show_status, 0, &arg_show_status },
- { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
- { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
- { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
- { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
- { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
- { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
-#ifdef 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, 0, &arg_default_std_output },
- { "Manager", "DefaultStandardError", config_parse_output, 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 },
- { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
- { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
- { "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] },
- { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
- { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
- { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
- {}
- };
-
- const char *fn, *conf_dirs_nulstr;
-
- fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
- conf_dirs_nulstr = arg_running_as == SYSTEMD_SYSTEM ? CONF_DIRS_NULSTR("systemd/system.conf") : CONF_DIRS_NULSTR("systemd/user.conf");
- config_parse_many(fn, conf_dirs_nulstr, "Manager\0",
- config_item_table_lookup, items, false, NULL);
-
- return 0;
-}
-
-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_CORE,
- ARG_CRASH_SHELL,
- ARG_CONFIRM_SPAWN,
- ARG_SHOW_STATUS,
- ARG_DESERIALIZE,
- ARG_SWITCHED_ROOT,
- 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 },
- { "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-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 },
- { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
- { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
- {}
- };
-
- 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:
- r = log_set_max_level_from_string(optarg);
- if (r < 0) {
- log_error("Failed to parse log level %s.", optarg);
- return r;
- }
-
- break;
-
- case ARG_LOG_TARGET:
- r = log_set_target_from_string(optarg);
- if (r < 0) {
- log_error("Failed to parse log target %s.", optarg);
- return r;
- }
-
- break;
-
- case ARG_LOG_COLOR:
-
- if (optarg) {
- r = log_show_color_from_string(optarg);
- if (r < 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) {
- r = log_show_location_from_string(optarg);
- if (r < 0) {
- log_error("Failed to parse log location setting %s.", optarg);
- return r;
- }
- } else
- log_show_location(true);
-
- break;
-
- case ARG_DEFAULT_STD_OUTPUT:
- r = exec_output_from_string(optarg);
- if (r < 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:
- r = exec_output_from_string(optarg);
- if (r < 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:
-
- r = set_default_unit(optarg);
- if (r < 0)
- return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
-
- 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;
- if (arg_no_pager < 0)
- arg_no_pager = true;
- break;
-
- case ARG_NO_PAGER:
- arg_no_pager = true;
- 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:
- if (optarg) {
- r = parse_show_status(optarg, &arg_show_status);
- if (r < 0) {
- log_error("Failed to parse show status boolean %s.", optarg);
- return r;
- }
- } else
- arg_show_status = SHOW_STATUS_YES;
- break;
-
- case ARG_DESERIALIZE: {
- int fd;
- FILE *f;
-
- r = safe_atoi(optarg, &fd);
- if (r < 0 || fd < 0) {
- log_error("Failed to parse deserialize option %s.", optarg);
- return r < 0 ? r : -EINVAL;
- }
-
- fd_cloexec(fd, true);
-
- f = fdopen(fd, "r");
- if (!f)
- return log_error_errno(errno, "Failed to open serialization fd: %m");
-
- if (arg_serialization)
- fclose(arg_serialization);
-
- arg_serialization = f;
-
- break;
- }
-
- case ARG_SWITCHED_ROOT:
- arg_switched_root = true;
- break;
-
- case 'h':
- arg_action = ACTION_HELP;
- if (arg_no_pager < 0)
- arg_no_pager = true;
- 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() != 1)
- return -EINVAL;
- else
- return 0;
-
- default:
- assert_not_reached("Unhandled option code.");
- }
-
- 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;
- }
-
- 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"
- " --no-pager Do not pipe output into a pager\n"
- " --dump-configuration-items Dump understood unit configuration items\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, kmsg, journal-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(SYSTEMD_FEATURES);
-
- return 0;
-}
-
-static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
- FILE *f = NULL;
- FDSet *fds = NULL;
- int r;
-
- assert(m);
- assert(_f);
- assert(_fds);
-
- r = manager_open_serialization(m, &f);
- if (r < 0) {
- log_error_errno(r, "Failed to create serialization file: %m");
- goto fail;
- }
-
- /* Make sure nothing is really destructed when we shut down */
- m->n_reloading ++;
- bus_manager_send_reloading(m, true);
-
- fds = fdset_new();
- if (!fds) {
- r = -ENOMEM;
- log_error_errno(r, "Failed to allocate fd set: %m");
- goto fail;
- }
-
- r = manager_serialize(m, f, fds, switching_root);
- if (r < 0) {
- log_error_errno(r, "Failed to serialize state: %m");
- goto fail;
- }
-
- if (fseeko(f, 0, SEEK_SET) < 0) {
- log_error_errno(errno, "Failed to rewind serialization fd: %m");
- goto fail;
- }
-
- r = fd_cloexec(fileno(f), false);
- if (r < 0) {
- log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
- goto fail;
- }
-
- r = fdset_cloexec(fds, false);
- if (r < 0) {
- log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
- 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)
- return log_error_errno(errno, "Reading RLIMIT_NOFILE failed: %m");
-
- /* 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)
- return log_error_errno(r, "Setting RLIMIT_NOFILE failed: %m");
-
- return 0;
-}
-
-static void test_mtab(void) {
-
- static const char ok[] =
- "/proc/self/mounts\0"
- "/proc/mounts\0"
- "../proc/self/mounts\0"
- "../proc/mounts\0";
-
- _cleanup_free_ char *p = NULL;
- int r;
-
- /* Check that /etc/mtab is a symlink to the right place or
- * non-existing. But certainly not a file, or a symlink to
- * some weird place... */
-
- r = readlink_malloc("/etc/mtab", &p);
- if (r == -ENOENT)
- return;
- if (r >= 0 && nulstr_contains(ok, p))
- 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 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 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" doesn'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);
- arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
- arg_join_controllers[2] = NULL;
-
- if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
- free_join_controllers();
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static int enforce_syscall_archs(Set *archs) {
-#ifdef HAVE_SECCOMP
- scmp_filter_ctx *seccomp;
- Iterator i;
- void *id;
- int r;
-
- seccomp = seccomp_init(SCMP_ACT_ALLOW);
- if (!seccomp)
- return log_oom();
-
- SET_FOREACH(id, arg_syscall_archs, i) {
- r = seccomp_arch_add(seccomp, PTR_TO_UINT32(id) - 1);
- if (r == -EEXIST)
- continue;
- if (r < 0) {
- log_error_errno(r, "Failed to add architecture to seccomp: %m");
- goto finish;
- }
- }
-
- r = seccomp_attr_set(seccomp, SCMP_FLTATR_CTL_NNP, 0);
- if (r < 0) {
- log_error_errno(r, "Failed to unset NO_NEW_PRIVS: %m");
- goto finish;
- }
-
- r = seccomp_load(seccomp);
- if (r < 0)
- log_error_errno(r, "Failed to add install architecture seccomp: %m");
-
-finish:
- seccomp_release(seccomp);
- return r;
-#else
- return 0;
-#endif
-}
-
-static int status_welcome(void) {
- _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
- int r;
-
- r = parse_env_file("/etc/os-release", NEWLINE,
- "PRETTY_NAME", &pretty_name,
- "ANSI_COLOR", &ansi_color,
- NULL);
- if (r == -ENOENT) {
- r = parse_env_file("/usr/lib/os-release", NEWLINE,
- "PRETTY_NAME", &pretty_name,
- "ANSI_COLOR", &ansi_color,
- NULL);
- }
-
- if (r < 0 && r != -ENOENT)
- log_warning_errno(r, "Failed to read os-release file: %m");
-
- return status_printf(NULL, false, false,
- "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
- isempty(ansi_color) ? "1" : ansi_color,
- isempty(pretty_name) ? "Linux" : pretty_name);
-}
-
-static int write_container_id(void) {
- const char *c;
-
- c = getenv("container");
- if (isempty(c))
- return 0;
-
- return write_string_file("/run/systemd/container", c);
-}
-
-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 = DUAL_TIMESTAMP_NULL;
- dual_timestamp userspace_timestamp = DUAL_TIMESTAMP_NULL;
- dual_timestamp kernel_timestamp = DUAL_TIMESTAMP_NULL;
- dual_timestamp security_start_timestamp = DUAL_TIMESTAMP_NULL;
- dual_timestamp security_finish_timestamp = DUAL_TIMESTAMP_NULL;
- static char systemd[] = "systemd";
- bool skip_setup = false;
- unsigned j;
- bool loaded_policy = false;
- bool arm_reboot_watchdog = false;
- bool queue_default_job = false;
- bool empty_etc = false;
- char *switch_root_dir = NULL, *switch_root_init = NULL;
- struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0);
- const char *error_message = NULL;
-
- dual_timestamp_from_monotonic(&kernel_timestamp, 0);
- dual_timestamp_get(&userspace_timestamp);
-
- /* 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. */
- if (strv_find(argv+1, "--deserialize"))
- skip_setup = true;
-
- /* If we have switched root, do all the special setup
- * things */
- if (strv_find(argv+1, "--switched-root"))
- skip_setup = false;
-
- /* If we get started via the /sbin/init symlink then we are
- called 'init'. After a subsequent reexecution we are then
- called 'systemd'. That is confusing, hence let's call us
- systemd right-away. */
- program_invocation_short_name = systemd;
- prctl(PR_SET_NAME, systemd);
-
- saved_argv = argv;
- saved_argc = argc;
-
- log_show_color(isatty(STDERR_FILENO) > 0);
- log_set_upgrade_syslog_to_journal(true);
-
- /* Disable the umask logic */
- if (getpid() == 1)
- umask(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())
- initrd_timestamp = userspace_timestamp;
-
- if (!skip_setup) {
- mount_setup_early();
- dual_timestamp_get(&security_start_timestamp);
- if (mac_selinux_setup(&loaded_policy) < 0) {
- error_message = "Failed to load SELinux policy";
- goto finish;
- } else if (ima_setup() < 0) {
- error_message = "Failed to load IMA policy";
- goto finish;
- } else if (mac_smack_setup(&loaded_policy) < 0) {
- error_message = "Failed to load SMACK policy";
- goto finish;
- }
- dual_timestamp_get(&security_finish_timestamp);
- }
-
- if (mac_selinux_init(NULL) < 0) {
- error_message = "Failed to initialize SELinux policy";
- goto finish;
- }
-
- if (!skip_setup) {
- if (clock_is_localtime() > 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 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.
- */
- clock_reset_timewarp();
- }
- }
-
- /* 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_close_console(); /* force reopen of /dev/console */
- log_open();
-
- /* For the later on, see above... */
- log_set_target(LOG_TARGET_JOURNAL);
-
- /* clear the kernel timestamp,
- * because we are in a container */
- kernel_timestamp.monotonic = 0ULL;
- kernel_timestamp.realtime = 0ULL;
-
- } else {
- /* Running as user instance */
- arg_running_as = SYSTEMD_USER;
- log_set_target(LOG_TARGET_AUTO);
- log_open();
-
- /* clear the kernel timestamp,
- * because we are not PID 1 */
- kernel_timestamp.monotonic = 0ULL;
- kernel_timestamp.realtime = 0ULL;
- }
-
- /* Initialize default unit */
- r = set_default_unit(SPECIAL_DEFAULT_TARGET);
- if (r < 0) {
- log_emergency_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
- error_message = "Failed to set default unit";
- goto finish;
- }
-
- r = initialize_join_controllers();
- if (r < 0) {
- error_message = "Failed to initalize cgroup controllers";
- goto finish;
- }
-
- /* Mount /proc, /sys and friends, so that /proc/cmdline and
- * /proc/$PID/fd is available. */
- if (getpid() == 1) {
-
- /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
- 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. */
- assert_se(reset_all_signal_handlers() == 0);
-
- ignore_signals(SIGNALS_IGNORE, -1);
-
- if (parse_config_file() < 0) {
- error_message = "Failed to parse config file";
- goto finish;
- }
-
- if (arg_running_as == SYSTEMD_SYSTEM) {
- r = parse_proc_cmdline(parse_proc_cmdline_item);
- 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();
-
- if (parse_argv(argc, argv) < 0) {
- error_message = "Failed to parse commandline arguments";
- 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_TEST)
- skip_setup = true;
-
- pager_open_if_enabled();
-
- 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;
- }
-
- if (arg_running_as == SYSTEMD_USER &&
- !getenv("XDG_RUNTIME_DIR")) {
- log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
- 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 */
- r = fdset_new_fill(&fds);
- if (r < 0) {
- log_emergency_errno(r, "Failed to allocate fd set: %m");
- error_message = "Failed to allocate fd set";
- goto finish;
- } else
- fdset_cloexec(fds, true);
-
- if (arg_serialization)
- assert_se(fdset_remove(fds, fileno(arg_serialization)) >= 0);
-
- if (arg_running_as == SYSTEMD_SYSTEM)
- /* Become a session leader if we aren't one yet. */
- setsid();
-
- /* Move out of the way, so that we won't block unmounts */
- assert_se(chdir("/") == 0);
-
- /* 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) {
-
- /* 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 (getpid() == 1 && !skip_setup)
- console_setup();
- }
-
- /* Open the logging devices, if possible and necessary */
- log_open();
-
- if (arg_show_status == _SHOW_STATUS_UNSET)
- arg_show_status = SHOW_STATUS_YES;
-
- /* Make sure we leave a core dump without panicing the
- * kernel. */
- if (getpid() == 1) {
- install_crash_handler();
-
- 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 %ssystem mode. (" SYSTEMD_FEATURES ")",
- arg_action == ACTION_TEST ? "test " : "" );
-
- detect_virtualization(&virtualization);
- if (virtualization)
- log_info("Detected virtualization %s.", virtualization);
-
- write_container_id();
-
- log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
-
- if (in_initrd())
- log_info("Running in initial RAM disk.");
-
- /* Let's check whether /etc is already populated. We
- * don't actually really check for that, but use
- * /etc/machine-id as flag file. 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. */
-
- empty_etc = access("/etc/machine-id", F_OK) < 0;
- if (empty_etc)
- log_info("Running with unpopulated /etc.");
- } else {
- _cleanup_free_ char *t;
-
- t = uid_to_name(getuid());
- log_debug(PACKAGE_STRING " running in %suser mode for user "UID_FMT"/%s. (" SYSTEMD_FEATURES ")",
- arg_action == ACTION_TEST ? " test" : "", getuid(), t);
- }
-
- if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
- if (arg_show_status > 0)
- status_welcome();
-
- hostname_setup();
- machine_id_setup(NULL);
- loopback_setup();
-
- test_mtab();
- test_usr();
- }
-
- if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
- watchdog_set_timeout(&arg_runtime_watchdog);
-
- if (arg_timer_slack_nsec != NSEC_INFINITY)
- if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
- log_error_errno(errno, "Failed to adjust timer slack: %m");
-
- if (arg_capability_bounding_set_drop) {
- r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
- if (r < 0) {
- log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
- error_message = "Failed to drop capability bounding set of usermode helpers";
- goto finish;
- }
- r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
- if (r < 0) {
- log_emergency_errno(r, "Failed to drop capability bounding set: %m");
- error_message = "Failed to drop capability bounding set";
- goto finish;
- }
- }
-
- if (arg_syscall_archs) {
- r = enforce_syscall_archs(arg_syscall_archs);
- if (r < 0) {
- error_message = "Failed to set syscall architectures";
- goto finish;
- }
- }
-
- if (arg_running_as == SYSTEMD_USER) {
- /* Become reaper of our children */
- if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
- log_warning_errno(errno, "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);
-
- if (empty_etc) {
- r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_FULL, false, NULL, 0);
- if (r < 0)
- log_warning_errno(r, "Failed to populate /etc with preset unit settings, ignoring: %m");
- else
- log_info("Populated /etc with preset unit settings.");
- }
- }
-
- r = manager_new(arg_running_as, arg_action == ACTION_TEST, &m);
- if (r < 0) {
- log_emergency_errno(r, "Failed to allocate manager object: %m");
- error_message = "Failed to allocate manager object";
- goto finish;
- }
-
- m->confirm_spawn = arg_confirm_spawn;
- 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_restart_usec = arg_default_restart_usec;
- m->default_timeout_start_usec = arg_default_timeout_start_usec;
- m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
- m->default_start_limit_interval = arg_default_start_limit_interval;
- m->default_start_limit_burst = arg_default_start_limit_burst;
- m->default_cpu_accounting = arg_default_cpu_accounting;
- m->default_blockio_accounting = arg_default_blockio_accounting;
- m->default_memory_accounting = arg_default_memory_accounting;
- m->runtime_watchdog = arg_runtime_watchdog;
- m->shutdown_watchdog = arg_shutdown_watchdog;
-
- m->userspace_timestamp = userspace_timestamp;
- m->kernel_timestamp = kernel_timestamp;
- m->initrd_timestamp = initrd_timestamp;
- m->security_start_timestamp = security_start_timestamp;
- m->security_finish_timestamp = security_finish_timestamp;
-
- manager_set_default_rlimits(m, arg_default_rlimit);
- manager_environment_add(m, NULL, arg_default_environment);
- manager_set_show_status(m, arg_show_status);
- manager_set_first_boot(m, empty_etc);
-
- /* 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)
- log_error_errno(r, "Failed to fully start up daemon: %m");
-
- /* This will close all file descriptors that were opened, but
- * not claimed by any unit. */
- fdset_free(fds);
- fds = NULL;
-
- if (arg_serialization) {
- fclose(arg_serialization);
- arg_serialization = NULL;
- }
-
- if (queue_default_job) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- Unit *target = NULL;
- Job *default_unit_job;
-
- 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_message(&error, r));
- else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
- log_error_errno(target->load_error, "Failed to load default target: %m");
- 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_emergency("Failed to load rescue target: %s", bus_error_message(&error, r));
- error_message = "Failed to load rescue target";
- goto finish;
- } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
- log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
- error_message = "Failed to load rescue target";
- goto finish;
- } else if (target->load_state == UNIT_MASKED) {
- log_emergency("Rescue target masked.");
- error_message = "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_ISOLATE, false, &error, &default_unit_job);
- if (r == -EPERM) {
- log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
-
- r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
- if (r < 0) {
- log_emergency("Failed to start default target: %s", bus_error_message(&error, r));
- error_message = "Failed to start default target";
- goto finish;
- }
- } else if (r < 0) {
- log_emergency("Failed to isolate default target: %s", bus_error_message(&error, r));
- error_message = "Failed to isolate default target";
- 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, 100 * USEC_PER_MSEC));
-
- 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_emergency_errno(r, "Failed to run main loop: %m");
- error_message = "Failed to run main loop";
- 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_errno(r, "Failed to reload: %m");
- break;
-
- case MANAGER_REEXECUTE:
-
- if (prepare_reexecute(m, &arg_serialization, &fds, false) < 0) {
- error_message = "Failed to prepare for reexection";
- 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, &arg_serialization, &fds, true) < 0) {
- error_message = "Failed to prepare for reexection";
- 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:
- pager_close();
-
- if (m)
- arg_shutdown_watchdog = m->shutdown_watchdog;
- m = manager_free(m);
-
- for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++) {
- free(arg_default_rlimit[j]);
- arg_default_rlimit[j] = NULL;
- }
-
- free(arg_default_unit);
- arg_default_unit = NULL;
-
- free_join_controllers();
-
- strv_free(arg_default_environment);
- arg_default_environment = NULL;
-
- set_free(arg_syscall_archs);
- arg_syscall_archs = NULL;
-
- mac_selinux_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, true);
-
- /* 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_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
- args[i++] = "--deserialize";
- args[i++] = sfd;
- args[i++] = NULL;
-
- /* do not pass along the environment we inherit from the kernel or initrd */
- if (switch_root_dir)
- clearenv();
-
- 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 (arg_serialization) {
- fclose(arg_serialization);
- arg_serialization = NULL;
- }
-
- if (fds) {
- fdset_free(fds);
- fds = NULL;
- }
-
- /* Reopen the console */
- 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=... */
- reset_all_signal_handlers();
- reset_signal_mask();
-
- if (switch_root_init) {
- args[0] = switch_root_init;
- execv(args[0], (char* const*) args);
- log_warning_errno(errno, "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_errno(errno, "Failed to execute /bin/sh, giving up: %m");
- } else
- log_warning_errno(errno, "Failed to execute /sbin/init, giving up: %m");
- }
-
- if (arg_serialization) {
- fclose(arg_serialization);
- arg_serialization = NULL;
- }
-
- if (fds) {
- fdset_free(fds);
- fds = NULL;
- }
-
-#ifdef 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() == 1 && RUNNING_ON_VALGRIND)
- return 0;
-#endif
-
- if (shutdown_verb) {
- char log_level[DECIMAL_STR_MAX(int) + 1];
- const char* command_line[9] = {
- SYSTEMD_SHUTDOWN_BINARY_PATH,
- shutdown_verb,
- "--log-level", log_level,
- "--log-target",
- };
- unsigned pos = 5;
- _cleanup_strv_free_ char **env_block = NULL;
-
- assert(command_line[pos] == NULL);
- env_block = strv_copy(environ);
-
- xsprintf(log_level, "%d", log_get_max_level());
-
- 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_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";
-
- assert(pos < ELEMENTSOF(command_line));
-
- if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
- 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)
- strv_push(&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(NULL) <= 0)
- cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
-
- execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
- log_error_errno(errno, "Failed to execute shutdown binary, %s: %m",
- getpid() == 1 ? "freezing" : "quitting");
- }
-
- if (getpid() == 1) {
- if (error_message)
- manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
- ANSI_HIGHLIGHT_RED_ON "!!!!!!" ANSI_HIGHLIGHT_OFF,
- "%s, freezing.", error_message);
- freeze();
- }
-
- return retval;
-}
~ianmdlvl / elogind.git / blobdiff