d450b6f2a9
When set to auto, status will shown when the first ephemeral message is shown (a job has been running for five seconds). Then until the boot or shutdown ends, status messages will be shown. No indication about the switch is done: I think it should be clear for the user that first the cylon eye and the ephemeral messages appear, and afterwards messages are displayed. The initial arming of the event source was still wrong, but now should really be fixed.
1891 lines
73 KiB
C
1891 lines
73 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <getopt.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <sys/prctl.h>
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#include <sys/mount.h>
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#ifdef HAVE_VALGRIND_VALGRIND_H
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#include <valgrind/valgrind.h>
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#endif
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#include "sd-daemon.h"
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#include "sd-messages.h"
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#include "sd-bus.h"
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#include "manager.h"
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#include "log.h"
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#include "load-fragment.h"
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#include "fdset.h"
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#include "special.h"
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#include "conf-parser.h"
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#include "missing.h"
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#include "label.h"
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#include "build.h"
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#include "strv.h"
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#include "def.h"
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#include "virt.h"
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#include "watchdog.h"
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#include "path-util.h"
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#include "switch-root.h"
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#include "capability.h"
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#include "killall.h"
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#include "env-util.h"
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#include "hwclock.h"
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#include "fileio.h"
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#include "dbus-manager.h"
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#include "bus-error.h"
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#include "bus-util.h"
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#include "mount-setup.h"
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#include "loopback-setup.h"
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#include "hostname-setup.h"
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#include "machine-id-setup.h"
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#include "selinux-setup.h"
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#include "ima-setup.h"
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#include "smack-setup.h"
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#ifdef HAVE_KMOD
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#include "kmod-setup.h"
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#endif
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static enum {
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ACTION_RUN,
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ACTION_HELP,
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ACTION_VERSION,
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ACTION_TEST,
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ACTION_DUMP_CONFIGURATION_ITEMS,
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ACTION_DONE
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} arg_action = ACTION_RUN;
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static char *arg_default_unit = NULL;
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static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
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static bool arg_dump_core = true;
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static bool arg_crash_shell = false;
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static int arg_crash_chvt = -1;
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static bool arg_confirm_spawn = false;
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static ShowStatus arg_show_status = SHOW_STATUS_UNSET;
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static bool arg_switched_root = false;
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static char ***arg_join_controllers = NULL;
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static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
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static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
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static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
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static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
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static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
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static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
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static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
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static usec_t arg_runtime_watchdog = 0;
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static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
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static char **arg_default_environment = NULL;
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static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
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static uint64_t arg_capability_bounding_set_drop = 0;
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static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
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static FILE* serialization = NULL;
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static void nop_handler(int sig) {
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}
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noreturn static void crash(int sig) {
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if (getpid() != 1)
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/* Pass this on immediately, if this is not PID 1 */
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raise(sig);
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else if (!arg_dump_core)
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log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
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else {
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struct sigaction sa = {
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.sa_handler = nop_handler,
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.sa_flags = SA_NOCLDSTOP|SA_RESTART,
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};
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pid_t pid;
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/* We want to wait for the core process, hence let's enable SIGCHLD */
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sigaction(SIGCHLD, &sa, NULL);
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pid = fork();
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if (pid < 0)
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log_error("Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
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else if (pid == 0) {
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struct rlimit rl = {};
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/* Enable default signal handler for core dump */
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zero(sa);
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sa.sa_handler = SIG_DFL;
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sigaction(sig, &sa, NULL);
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/* Don't limit the core dump size */
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rl.rlim_cur = RLIM_INFINITY;
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rl.rlim_max = RLIM_INFINITY;
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setrlimit(RLIMIT_CORE, &rl);
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/* Just to be sure... */
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chdir("/");
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/* Raise the signal again */
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raise(sig);
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assert_not_reached("We shouldn't be here...");
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_exit(1);
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} else {
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siginfo_t status;
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int r;
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/* Order things nicely. */
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r = wait_for_terminate(pid, &status);
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if (r < 0)
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log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
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else if (status.si_code != CLD_DUMPED)
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log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
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else
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log_error("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
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}
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}
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if (arg_crash_chvt)
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chvt(arg_crash_chvt);
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if (arg_crash_shell) {
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struct sigaction sa = {
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.sa_handler = SIG_IGN,
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.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
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};
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pid_t pid;
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log_info("Executing crash shell in 10s...");
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sleep(10);
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/* Let the kernel reap children for us */
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assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
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pid = fork();
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if (pid < 0)
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log_error("Failed to fork off crash shell: %m");
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else if (pid == 0) {
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make_console_stdio();
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execl("/bin/sh", "/bin/sh", NULL);
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log_error("execl() failed: %m");
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_exit(1);
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}
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log_info("Successfully spawned crash shell as pid "PID_FMT".", pid);
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}
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log_info("Freezing execution.");
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freeze();
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}
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static void install_crash_handler(void) {
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struct sigaction sa = {
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.sa_handler = crash,
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.sa_flags = SA_NODEFER,
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};
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sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
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}
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static int console_setup(bool do_reset) {
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int tty_fd, r;
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/* If we are init, we connect stdin/stdout/stderr to /dev/null
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* and make sure we don't have a controlling tty. */
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release_terminal();
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if (!do_reset)
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return 0;
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tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
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if (tty_fd < 0) {
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log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
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return -tty_fd;
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}
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/* We don't want to force text mode.
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* plymouth may be showing pictures already from initrd. */
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r = reset_terminal_fd(tty_fd, false);
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if (r < 0)
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log_error("Failed to reset /dev/console: %s", strerror(-r));
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close_nointr_nofail(tty_fd);
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return r;
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}
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static int set_default_unit(const char *u) {
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char *c;
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assert(u);
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c = strdup(u);
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if (!c)
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return -ENOMEM;
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free(arg_default_unit);
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arg_default_unit = c;
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return 0;
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}
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static int parse_proc_cmdline_word(const char *word) {
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static const char * const rlmap[] = {
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"emergency", SPECIAL_EMERGENCY_TARGET,
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"-b", SPECIAL_EMERGENCY_TARGET,
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"single", SPECIAL_RESCUE_TARGET,
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"-s", SPECIAL_RESCUE_TARGET,
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"s", SPECIAL_RESCUE_TARGET,
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"S", SPECIAL_RESCUE_TARGET,
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"1", SPECIAL_RESCUE_TARGET,
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"2", SPECIAL_RUNLEVEL2_TARGET,
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"3", SPECIAL_RUNLEVEL3_TARGET,
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"4", SPECIAL_RUNLEVEL4_TARGET,
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"5", SPECIAL_RUNLEVEL5_TARGET,
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};
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assert(word);
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if (startswith(word, "systemd.unit=")) {
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if (!in_initrd())
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return set_default_unit(word + 13);
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} else if (startswith(word, "rd.systemd.unit=")) {
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if (in_initrd())
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return set_default_unit(word + 16);
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} else if (startswith(word, "systemd.log_target=")) {
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if (log_set_target_from_string(word + 19) < 0)
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log_warning("Failed to parse log target %s. Ignoring.", word + 19);
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} else if (startswith(word, "systemd.log_level=")) {
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if (log_set_max_level_from_string(word + 18) < 0)
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log_warning("Failed to parse log level %s. Ignoring.", word + 18);
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} else if (startswith(word, "systemd.log_color=")) {
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if (log_show_color_from_string(word + 18) < 0)
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log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
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} else if (startswith(word, "systemd.log_location=")) {
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if (log_show_location_from_string(word + 21) < 0)
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log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
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} else if (startswith(word, "systemd.dump_core=")) {
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int r;
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if ((r = parse_boolean(word + 18)) < 0)
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log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18);
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else
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arg_dump_core = r;
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} else if (startswith(word, "systemd.crash_shell=")) {
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int r;
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if ((r = parse_boolean(word + 20)) < 0)
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log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20);
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else
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arg_crash_shell = r;
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} else if (startswith(word, "systemd.confirm_spawn=")) {
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int r;
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if ((r = parse_boolean(word + 22)) < 0)
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log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22);
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else
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arg_confirm_spawn = r;
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} else if (startswith(word, "systemd.crash_chvt=")) {
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int k;
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if (safe_atoi(word + 19, &k) < 0)
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log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19);
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else
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arg_crash_chvt = k;
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} else if (startswith(word, "systemd.show_status=")) {
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int r;
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r = parse_show_status(word + 20, &arg_show_status);
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if (r < 0)
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log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
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} else if (startswith(word, "systemd.default_standard_output=")) {
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int r;
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if ((r = exec_output_from_string(word + 32)) < 0)
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log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32);
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else
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arg_default_std_output = r;
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} else if (startswith(word, "systemd.default_standard_error=")) {
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int r;
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if ((r = exec_output_from_string(word + 31)) < 0)
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log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31);
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else
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arg_default_std_error = r;
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} else if (startswith(word, "systemd.setenv=")) {
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_cleanup_free_ char *cenv = NULL;
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cenv = strdup(word + 15);
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if (!cenv)
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return -ENOMEM;
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if (env_assignment_is_valid(cenv)) {
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char **env;
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env = strv_env_set(arg_default_environment, cenv);
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if (env)
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arg_default_environment = env;
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else
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log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv);
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} else
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log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
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} else if (startswith(word, "systemd.") ||
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(in_initrd() && startswith(word, "rd.systemd."))) {
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const char *c;
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/* Ignore systemd.journald.xyz and friends */
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c = word;
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if (startswith(c, "rd."))
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c += 3;
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if (startswith(c, "systemd."))
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c += 8;
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if (c[strcspn(c, ".=")] != '.') {
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log_warning("Unknown kernel switch %s. Ignoring.", word);
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log_info("Supported kernel switches:\n"
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"systemd.unit=UNIT Default unit to start\n"
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"rd.systemd.unit=UNIT Default unit to start when run in initrd\n"
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"systemd.dump_core=0|1 Dump core on crash\n"
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"systemd.crash_shell=0|1 Run shell on crash\n"
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"systemd.crash_chvt=N Change to VT #N on crash\n"
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"systemd.confirm_spawn=0|1 Confirm every process spawn\n"
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"systemd.show_status=0|1|auto Show status updates on the console during bootup\n"
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"systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
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" Log target\n"
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"systemd.log_level=LEVEL Log level\n"
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"systemd.log_color=0|1 Highlight important log messages\n"
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"systemd.log_location=0|1 Include code location in log messages\n"
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"systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
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" Set default log output for services\n"
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"systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
|
|
" Set default log error output for services\n"
|
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"systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
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}
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|
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} else if (streq(word, "quiet")) {
|
|
if (arg_show_status == SHOW_STATUS_UNSET)
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arg_show_status = SHOW_STATUS_AUTO;
|
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} else if (streq(word, "debug")) {
|
|
/* Log to kmsg, the journal socket will fill up before the
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* journal is started and tools running during that time
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* will block with every log message for for 60 seconds,
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* before they give up. */
|
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log_set_max_level(LOG_DEBUG);
|
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log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_KMSG);
|
|
} else if (!in_initrd()) {
|
|
unsigned i;
|
|
|
|
/* SysV compatibility */
|
|
for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
|
|
if (streq(word, rlmap[i]))
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return set_default_unit(rlmap[i+1]);
|
|
}
|
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|
|
return 0;
|
|
}
|
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|
|
#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) { \
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|
\
|
|
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")
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|
|
|
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) {
|
|
|
|
char *w;
|
|
size_t l;
|
|
char *state;
|
|
cpu_set_t *c = NULL;
|
|
unsigned ncpus = 0;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
|
|
char *t;
|
|
int r;
|
|
unsigned cpu;
|
|
|
|
if (!(t = strndup(w, l)))
|
|
return log_oom();
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|
|
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 (c) {
|
|
if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
|
|
log_warning_unit(unit, "Failed to set CPU affinity: %m");
|
|
|
|
CPU_FREE(c);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void strv_free_free(char ***l) {
|
|
char ***i;
|
|
|
|
if (!l)
|
|
return;
|
|
|
|
for (i = l; *i; i++)
|
|
strv_free(*i);
|
|
|
|
free(l);
|
|
}
|
|
|
|
static void free_join_controllers(void) {
|
|
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;
|
|
char *state, *w;
|
|
size_t length;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
free_join_controllers();
|
|
|
|
FOREACH_WORD_QUOTED(w, length, rvalue, state) {
|
|
char *s, **l;
|
|
|
|
s = strndup(w, length);
|
|
if (!s)
|
|
return log_oom();
|
|
|
|
l = strv_split(s, ",");
|
|
free(s);
|
|
|
|
strv_uniq(l);
|
|
|
|
if (strv_length(l) <= 1) {
|
|
strv_free(l);
|
|
continue;
|
|
}
|
|
|
|
if (!arg_join_controllers) {
|
|
arg_join_controllers = new(char**, 2);
|
|
if (!arg_join_controllers) {
|
|
strv_free(l);
|
|
return log_oom();
|
|
}
|
|
|
|
arg_join_controllers[0] = l;
|
|
arg_join_controllers[1] = NULL;
|
|
|
|
n = 1;
|
|
} else {
|
|
char ***a;
|
|
char ***t;
|
|
|
|
t = new0(char**, n+2);
|
|
if (!t) {
|
|
strv_free(l);
|
|
return log_oom();
|
|
}
|
|
|
|
n = 0;
|
|
|
|
for (a = arg_join_controllers; *a; a++) {
|
|
|
|
if (strv_overlap(*a, l)) {
|
|
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;
|
|
}
|
|
}
|
|
|
|
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", "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", "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 },
|
|
{ "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
|
|
{ "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]},
|
|
{ NULL, NULL, NULL, 0, NULL }
|
|
};
|
|
|
|
_cleanup_fclose_ FILE *f;
|
|
const char *fn;
|
|
int r;
|
|
|
|
fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
|
|
f = fopen(fn, "re");
|
|
if (!f) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
|
|
log_warning("Failed to open configuration file '%s': %m", fn);
|
|
return 0;
|
|
}
|
|
|
|
r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, false, NULL);
|
|
if (r < 0)
|
|
log_warning("Failed to parse configuration file: %s", strerror(-r));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_proc_cmdline(void) {
|
|
_cleanup_free_ char *line = NULL;
|
|
char *w, *state;
|
|
size_t l;
|
|
int r;
|
|
|
|
r = proc_cmdline(&line);
|
|
if (r < 0)
|
|
log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
|
|
if (r <= 0)
|
|
return 0;
|
|
|
|
FOREACH_WORD_QUOTED(w, l, line, state) {
|
|
_cleanup_free_ char *word;
|
|
|
|
word = strndup(w, l);
|
|
if (!word)
|
|
return log_oom();
|
|
|
|
r = parse_proc_cmdline_word(word);
|
|
if (r < 0) {
|
|
log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
|
|
return r;
|
|
}
|
|
}
|
|
|
|
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_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 },
|
|
{ "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, },
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
int c, r;
|
|
|
|
assert(argc >= 1);
|
|
assert(argv);
|
|
|
|
if (getpid() == 1)
|
|
opterr = 0;
|
|
|
|
while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
|
|
|
|
switch (c) {
|
|
|
|
case ARG_LOG_LEVEL:
|
|
if ((r = log_set_max_level_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log level %s.", optarg);
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_LOG_TARGET:
|
|
|
|
if ((r = log_set_target_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log target %s.", optarg);
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_LOG_COLOR:
|
|
|
|
if (optarg) {
|
|
if ((r = log_show_color_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log color setting %s.", optarg);
|
|
return r;
|
|
}
|
|
} else
|
|
log_show_color(true);
|
|
|
|
break;
|
|
|
|
case ARG_LOG_LOCATION:
|
|
|
|
if (optarg) {
|
|
if ((r = log_show_location_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log location setting %s.", optarg);
|
|
return r;
|
|
}
|
|
} else
|
|
log_show_location(true);
|
|
|
|
break;
|
|
|
|
case ARG_DEFAULT_STD_OUTPUT:
|
|
|
|
if ((r = exec_output_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse default standard output setting %s.", optarg);
|
|
return r;
|
|
} else
|
|
arg_default_std_output = r;
|
|
break;
|
|
|
|
case ARG_DEFAULT_STD_ERROR:
|
|
|
|
if ((r = exec_output_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse default standard error output setting %s.", optarg);
|
|
return r;
|
|
} else
|
|
arg_default_std_error = r;
|
|
break;
|
|
|
|
case ARG_UNIT:
|
|
|
|
if ((r = set_default_unit(optarg)) < 0) {
|
|
log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_SYSTEM:
|
|
arg_running_as = SYSTEMD_SYSTEM;
|
|
break;
|
|
|
|
case ARG_USER:
|
|
arg_running_as = SYSTEMD_USER;
|
|
break;
|
|
|
|
case ARG_TEST:
|
|
arg_action = ACTION_TEST;
|
|
break;
|
|
|
|
case ARG_VERSION:
|
|
arg_action = ACTION_VERSION;
|
|
break;
|
|
|
|
case ARG_DUMP_CONFIGURATION_ITEMS:
|
|
arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
|
|
break;
|
|
|
|
case ARG_DUMP_CORE:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse dump core boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_dump_core = r;
|
|
break;
|
|
|
|
case ARG_CRASH_SHELL:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse crash shell boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_crash_shell = r;
|
|
break;
|
|
|
|
case ARG_CONFIRM_SPAWN:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse confirm spawn boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_confirm_spawn = r;
|
|
break;
|
|
|
|
case ARG_SHOW_STATUS:
|
|
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) {
|
|
log_error("Failed to open serialization fd: %m");
|
|
return -errno;
|
|
}
|
|
|
|
if (serialization)
|
|
fclose(serialization);
|
|
|
|
serialization = f;
|
|
|
|
break;
|
|
}
|
|
|
|
case ARG_SWITCHED_ROOT:
|
|
arg_switched_root = true;
|
|
break;
|
|
|
|
case 'h':
|
|
arg_action = ACTION_HELP;
|
|
break;
|
|
|
|
case 'D':
|
|
log_set_max_level(LOG_DEBUG);
|
|
break;
|
|
|
|
case 'b':
|
|
case 's':
|
|
case 'z':
|
|
/* Just to eat away the sysvinit kernel
|
|
* cmdline args without getopt() error
|
|
* messages that we'll parse in
|
|
* parse_proc_cmdline_word() or ignore. */
|
|
|
|
case '?':
|
|
default:
|
|
if (getpid() != 1) {
|
|
log_error("Unknown option code %c", c);
|
|
return -EINVAL;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (optind < argc && getpid() != 1) {
|
|
/* Hmm, when we aren't run as init system
|
|
* let's complain about excess arguments */
|
|
|
|
log_error("Excess arguments.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (detect_container(NULL) > 0) {
|
|
char **a;
|
|
|
|
/* All /proc/cmdline arguments the kernel didn't
|
|
* understand it passed to us. We're not really
|
|
* interested in that usually since /proc/cmdline is
|
|
* more interesting and complete. With one exception:
|
|
* if we are run in a container /proc/cmdline is not
|
|
* relevant for the container, hence we rely on argv[]
|
|
* instead. */
|
|
|
|
for (a = argv; a < argv + argc; a++) {
|
|
r = parse_proc_cmdline_word(*a);
|
|
if (r < 0) {
|
|
log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
|
|
return r;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int help(void) {
|
|
|
|
printf("%s [OPTIONS...]\n\n"
|
|
"Starts up and maintains the system or user services.\n\n"
|
|
" -h --help Show this help\n"
|
|
" --test Determine startup sequence, dump it and exit\n"
|
|
" --dump-configuration-items Dump understood unit configuration items\n"
|
|
" --unit=UNIT Set default unit\n"
|
|
" --system Run a system instance, even if PID != 1\n"
|
|
" --user Run a user instance\n"
|
|
" --dump-core[=0|1] Dump core on crash\n"
|
|
" --crash-shell[=0|1] Run shell on crash\n"
|
|
" --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
|
|
" --show-status[=0|1] Show status updates on the console during bootup\n"
|
|
" --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
|
|
" --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
|
|
" --log-color[=0|1] Highlight important log messages\n"
|
|
" --log-location[=0|1] Include code location in log messages\n"
|
|
" --default-standard-output= Set default standard output for services\n"
|
|
" --default-standard-error= Set default standard error output for services\n",
|
|
program_invocation_short_name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int version(void) {
|
|
puts(PACKAGE_STRING);
|
|
puts(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("Failed to create serialization file: %s", strerror(-r));
|
|
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("Failed to allocate fd set: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
r = manager_serialize(m, f, fds, switching_root);
|
|
if (r < 0) {
|
|
log_error("Failed to serialize state: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
if (fseeko(f, 0, SEEK_SET) < 0) {
|
|
log_error("Failed to rewind serialization fd: %m");
|
|
goto fail;
|
|
}
|
|
|
|
r = fd_cloexec(fileno(f), false);
|
|
if (r < 0) {
|
|
log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
r = fdset_cloexec(fds, false);
|
|
if (r < 0) {
|
|
log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
*_f = f;
|
|
*_fds = fds;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
fdset_free(fds);
|
|
|
|
if (f)
|
|
fclose(f);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
|
|
struct rlimit nl;
|
|
int r;
|
|
|
|
assert(saved_rlimit);
|
|
|
|
/* Save the original RLIMIT_NOFILE so that we can reset it
|
|
* later when transitioning from the initrd to the main
|
|
* systemd or suchlike. */
|
|
if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
|
|
log_error("Reading RLIMIT_NOFILE failed: %m");
|
|
return -errno;
|
|
}
|
|
|
|
/* Make sure forked processes get the default kernel setting */
|
|
if (!arg_default_rlimit[RLIMIT_NOFILE]) {
|
|
struct rlimit *rl;
|
|
|
|
rl = newdup(struct rlimit, saved_rlimit, 1);
|
|
if (!rl)
|
|
return log_oom();
|
|
|
|
arg_default_rlimit[RLIMIT_NOFILE] = rl;
|
|
}
|
|
|
|
/* Bump up the resource limit for ourselves substantially */
|
|
nl.rlim_cur = nl.rlim_max = 64*1024;
|
|
r = setrlimit_closest(RLIMIT_NOFILE, &nl);
|
|
if (r < 0) {
|
|
log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void test_mtab(void) {
|
|
char *p;
|
|
|
|
/* Check that /etc/mtab is a symlink */
|
|
|
|
if (readlink_malloc("/etc/mtab", &p) >= 0) {
|
|
bool b;
|
|
|
|
b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
|
|
free(p);
|
|
|
|
if (b)
|
|
return;
|
|
}
|
|
|
|
log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
|
|
"This is not supported anymore. "
|
|
"Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
|
|
}
|
|
|
|
static void test_usr(void) {
|
|
|
|
/* Check that /usr is not a separate fs */
|
|
|
|
if (dir_is_empty("/usr") <= 0)
|
|
return;
|
|
|
|
log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
|
|
"Some things will probably break (sometimes even silently) in mysterious ways. "
|
|
"Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
|
|
}
|
|
|
|
static void test_cgroups(void) {
|
|
|
|
if (access("/proc/cgroups", F_OK) >= 0)
|
|
return;
|
|
|
|
log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
|
|
"Systems without control groups are not supported. "
|
|
"We will now sleep for 10s, and then continue boot-up. "
|
|
"Expect breakage and please do not file bugs. "
|
|
"Instead fix your kernel and enable CONFIG_CGROUPS. "
|
|
"Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
|
|
|
|
sleep(10);
|
|
}
|
|
|
|
static int initialize_join_controllers(void) {
|
|
/* By default, mount "cpu" + "cpuacct" together, and "net_cls"
|
|
* + "net_prio". We'd like to add "cpuset" to the mix, but
|
|
* "cpuset" does't really work for groups with no initialized
|
|
* attributes. */
|
|
|
|
arg_join_controllers = new(char**, 3);
|
|
if (!arg_join_controllers)
|
|
return -ENOMEM;
|
|
|
|
arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
|
|
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;
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
Manager *m = NULL;
|
|
int r, retval = EXIT_FAILURE;
|
|
usec_t before_startup, after_startup;
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
FDSet *fds = NULL;
|
|
bool reexecute = false;
|
|
const char *shutdown_verb = NULL;
|
|
dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
|
|
dual_timestamp userspace_timestamp = { 0ULL, 0ULL };
|
|
dual_timestamp kernel_timestamp = { 0ULL, 0ULL };
|
|
dual_timestamp security_start_timestamp = { 0ULL, 0ULL };
|
|
dual_timestamp security_finish_timestamp = { 0ULL, 0ULL };
|
|
static char systemd[] = "systemd";
|
|
bool skip_setup = false;
|
|
int j;
|
|
bool loaded_policy = false;
|
|
bool arm_reboot_watchdog = false;
|
|
bool queue_default_job = false;
|
|
char *switch_root_dir = NULL, *switch_root_init = NULL;
|
|
static struct rlimit saved_rlimit_nofile = { 0, 0 };
|
|
|
|
#ifdef HAVE_SYSV_COMPAT
|
|
if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
|
|
/* This is compatibility support for SysV, where
|
|
* calling init as a user is identical to telinit. */
|
|
|
|
errno = -ENOENT;
|
|
execv(SYSTEMCTL_BINARY_PATH, argv);
|
|
log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
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);
|
|
|
|
/* 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 (selinux_setup(&loaded_policy) < 0)
|
|
goto finish;
|
|
if (ima_setup() < 0)
|
|
goto finish;
|
|
if (smack_setup() < 0)
|
|
goto finish;
|
|
dual_timestamp_get(&security_finish_timestamp);
|
|
}
|
|
|
|
if (label_init(NULL) < 0)
|
|
goto finish;
|
|
|
|
if (!skip_setup) {
|
|
if (hwclock_is_localtime() > 0) {
|
|
int min;
|
|
|
|
/* The first-time call to settimeofday() does a time warp in the kernel */
|
|
r = hwclock_set_timezone(&min);
|
|
if (r < 0)
|
|
log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
|
|
else
|
|
log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
|
|
} else if (!in_initrd()) {
|
|
/*
|
|
* Do dummy first-time call to seal the kernel's time warp magic
|
|
*
|
|
* Do not call this this from inside the initrd. The initrd might not
|
|
* carry /etc/adjtime with LOCAL, but the real system could be set up
|
|
* that way. In such case, we need to delay the time-warp or the sealing
|
|
* until we reach the real system.
|
|
*/
|
|
hwclock_reset_timezone();
|
|
|
|
/* Tell the kernel our timezone */
|
|
r = hwclock_set_timezone(NULL);
|
|
if (r < 0)
|
|
log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r));
|
|
}
|
|
}
|
|
|
|
/* Set the default for later on, but don't actually
|
|
* open the logs like this for now. Note that if we
|
|
* are transitioning from the initrd there might still
|
|
* be journal fd open, and we shouldn't attempt
|
|
* opening that before we parsed /proc/cmdline which
|
|
* might redirect output elsewhere. */
|
|
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
|
|
|
|
} else if (getpid() == 1) {
|
|
/* Running inside a container, as PID 1 */
|
|
arg_running_as = SYSTEMD_SYSTEM;
|
|
log_set_target(LOG_TARGET_CONSOLE);
|
|
log_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_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = initialize_join_controllers();
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
/* Mount /proc, /sys and friends, so that /proc/cmdline and
|
|
* /proc/$PID/fd is available. */
|
|
if (getpid() == 1) {
|
|
r = mount_setup(loaded_policy);
|
|
if (r < 0)
|
|
goto finish;
|
|
}
|
|
|
|
/* Reset all signal handlers. */
|
|
assert_se(reset_all_signal_handlers() == 0);
|
|
|
|
ignore_signals(SIGNALS_IGNORE, -1);
|
|
|
|
if (parse_config_file() < 0)
|
|
goto finish;
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM)
|
|
if (parse_proc_cmdline() < 0)
|
|
goto finish;
|
|
|
|
log_parse_environment();
|
|
|
|
if (parse_argv(argc, argv) < 0)
|
|
goto finish;
|
|
|
|
if (arg_action == ACTION_TEST &&
|
|
geteuid() == 0) {
|
|
log_error("Don't run test mode as root.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_USER &&
|
|
arg_action == ACTION_RUN &&
|
|
sd_booted() <= 0) {
|
|
log_error("Trying to run as user instance, but the system has not been booted with systemd.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM &&
|
|
arg_action == ACTION_RUN &&
|
|
running_in_chroot() > 0) {
|
|
log_error("Cannot be run in a chroot() environment.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_action == ACTION_HELP) {
|
|
retval = help();
|
|
goto finish;
|
|
} else if (arg_action == ACTION_VERSION) {
|
|
retval = version();
|
|
goto finish;
|
|
} else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
|
|
unit_dump_config_items(stdout);
|
|
retval = EXIT_SUCCESS;
|
|
goto finish;
|
|
} else if (arg_action == ACTION_DONE) {
|
|
retval = EXIT_SUCCESS;
|
|
goto finish;
|
|
}
|
|
|
|
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_error("Failed to allocate fd set: %s", strerror(-r));
|
|
goto finish;
|
|
} else
|
|
fdset_cloexec(fds, true);
|
|
|
|
if (serialization)
|
|
assert_se(fdset_remove(fds, fileno(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)
|
|
console_setup(getpid() == 1 && !skip_setup);
|
|
|
|
/* Open the logging devices, if possible and necessary */
|
|
log_open();
|
|
|
|
/* Make sure we leave a core dump without panicing the
|
|
* kernel. */
|
|
if (getpid() == 1) {
|
|
install_crash_handler();
|
|
|
|
r = mount_cgroup_controllers(arg_join_controllers);
|
|
if (r < 0)
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM) {
|
|
const char *virtualization = NULL;
|
|
|
|
log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES ")");
|
|
|
|
detect_virtualization(&virtualization);
|
|
if (virtualization)
|
|
log_info("Detected virtualization '%s'.", virtualization);
|
|
|
|
if (in_initrd())
|
|
log_info("Running in initial RAM disk.");
|
|
|
|
} else {
|
|
_cleanup_free_ char *t = uid_to_name(getuid());
|
|
log_debug(PACKAGE_STRING " running in user mode for user "PID_FMT"/%s. (" SYSTEMD_FEATURES ")",
|
|
getuid(), t);
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
|
|
if (arg_show_status > 0 || plymouth_running())
|
|
status_welcome();
|
|
|
|
#ifdef HAVE_KMOD
|
|
if (detect_container(NULL) <= 0)
|
|
kmod_setup();
|
|
#endif
|
|
hostname_setup();
|
|
machine_id_setup();
|
|
loopback_setup();
|
|
|
|
test_mtab();
|
|
test_usr();
|
|
test_cgroups();
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
|
|
watchdog_set_timeout(&arg_runtime_watchdog);
|
|
|
|
if (arg_timer_slack_nsec != (nsec_t) -1)
|
|
if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
|
|
log_error("Failed to adjust timer slack: %m");
|
|
|
|
if (arg_capability_bounding_set_drop) {
|
|
r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
|
|
if (r < 0) {
|
|
log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
|
|
if (r < 0) {
|
|
log_error("Failed to drop capability bounding set: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_USER) {
|
|
/* Become reaper of our children */
|
|
if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
|
|
log_warning("Failed to make us a subreaper: %m");
|
|
if (errno == EINVAL)
|
|
log_info("Perhaps the kernel version is too old (< 3.4?)");
|
|
}
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM)
|
|
bump_rlimit_nofile(&saved_rlimit_nofile);
|
|
|
|
r = manager_new(arg_running_as, &m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate manager object: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
m->confirm_spawn = arg_confirm_spawn;
|
|
m->default_std_output = arg_default_std_output;
|
|
m->default_std_error = arg_default_std_error;
|
|
m->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->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);
|
|
|
|
if (arg_default_environment)
|
|
manager_environment_add(m, NULL, arg_default_environment);
|
|
|
|
if (arg_show_status == SHOW_STATUS_UNSET)
|
|
arg_show_status = SHOW_STATUS_YES;
|
|
manager_set_show_status(m, arg_show_status);
|
|
|
|
/* Remember whether we should queue the default job */
|
|
queue_default_job = !serialization || arg_switched_root;
|
|
|
|
before_startup = now(CLOCK_MONOTONIC);
|
|
|
|
r = manager_startup(m, serialization, fds);
|
|
if (r < 0)
|
|
log_error("Failed to fully start up daemon: %s", strerror(-r));
|
|
|
|
/* This will close all file descriptors that were opened, but
|
|
* not claimed by any unit. */
|
|
fdset_free(fds);
|
|
fds = NULL;
|
|
|
|
if (serialization) {
|
|
fclose(serialization);
|
|
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("Failed to load default target: %s", strerror(-target->load_error));
|
|
else if (target->load_state == UNIT_MASKED)
|
|
log_error("Default target masked.");
|
|
|
|
if (!target || target->load_state != UNIT_LOADED) {
|
|
log_info("Trying to load rescue target...");
|
|
|
|
r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
|
|
if (r < 0) {
|
|
log_error("Failed to load rescue target: %s", bus_error_message(&error, r));
|
|
goto finish;
|
|
} else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
|
|
log_error("Failed to load rescue target: %s", strerror(-target->load_error));
|
|
goto finish;
|
|
} else if (target->load_state == UNIT_MASKED) {
|
|
log_error("Rescue target masked.");
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
assert(target->load_state == UNIT_LOADED);
|
|
|
|
if (arg_action == ACTION_TEST) {
|
|
printf("-> By units:\n");
|
|
manager_dump_units(m, stdout, "\t");
|
|
}
|
|
|
|
r = manager_add_job(m, JOB_START, target, JOB_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_error("Failed to start default target: %s", bus_error_message(&error, r));
|
|
goto finish;
|
|
}
|
|
} else if (r < 0) {
|
|
log_error("Failed to isolate default target: %s", bus_error_message(&error, r));
|
|
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, 0));
|
|
|
|
if (arg_action == ACTION_TEST) {
|
|
printf("-> By jobs:\n");
|
|
manager_dump_jobs(m, stdout, "\t");
|
|
retval = EXIT_SUCCESS;
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
for (;;) {
|
|
r = manager_loop(m);
|
|
if (r < 0) {
|
|
log_error("Failed to run mainloop: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
switch (m->exit_code) {
|
|
|
|
case MANAGER_EXIT:
|
|
retval = EXIT_SUCCESS;
|
|
log_debug("Exit.");
|
|
goto finish;
|
|
|
|
case MANAGER_RELOAD:
|
|
log_info("Reloading.");
|
|
r = manager_reload(m);
|
|
if (r < 0)
|
|
log_error("Failed to reload: %s", strerror(-r));
|
|
break;
|
|
|
|
case MANAGER_REEXECUTE:
|
|
|
|
if (prepare_reexecute(m, &serialization, &fds, false) < 0)
|
|
goto finish;
|
|
|
|
reexecute = true;
|
|
log_notice("Reexecuting.");
|
|
goto finish;
|
|
|
|
case MANAGER_SWITCH_ROOT:
|
|
/* Steal the switch root parameters */
|
|
switch_root_dir = m->switch_root;
|
|
switch_root_init = m->switch_root_init;
|
|
m->switch_root = m->switch_root_init = NULL;
|
|
|
|
if (!switch_root_init)
|
|
if (prepare_reexecute(m, &serialization, &fds, true) < 0)
|
|
goto finish;
|
|
|
|
reexecute = true;
|
|
log_notice("Switching root.");
|
|
goto finish;
|
|
|
|
case MANAGER_REBOOT:
|
|
case MANAGER_POWEROFF:
|
|
case MANAGER_HALT:
|
|
case MANAGER_KEXEC: {
|
|
static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
|
|
[MANAGER_REBOOT] = "reboot",
|
|
[MANAGER_POWEROFF] = "poweroff",
|
|
[MANAGER_HALT] = "halt",
|
|
[MANAGER_KEXEC] = "kexec"
|
|
};
|
|
|
|
assert_se(shutdown_verb = table[m->exit_code]);
|
|
arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
|
|
|
|
log_notice("Shutting down.");
|
|
goto finish;
|
|
}
|
|
|
|
default:
|
|
assert_not_reached("Unknown exit code.");
|
|
}
|
|
}
|
|
|
|
finish:
|
|
if (m)
|
|
manager_free(m);
|
|
|
|
for (j = 0; j < RLIMIT_NLIMITS; j++)
|
|
free(arg_default_rlimit[j]);
|
|
|
|
free(arg_default_unit);
|
|
free_join_controllers();
|
|
|
|
label_finish();
|
|
|
|
if (reexecute) {
|
|
const char **args;
|
|
unsigned i, args_size;
|
|
|
|
/* Close and disarm the watchdog, so that the new
|
|
* instance can reinitialize it, but doesn't get
|
|
* rebooted while we do that */
|
|
watchdog_close(true);
|
|
|
|
/* Reset the RLIMIT_NOFILE to the kernel default, so
|
|
* that the new systemd can pass the kernel default to
|
|
* its child processes */
|
|
if (saved_rlimit_nofile.rlim_cur > 0)
|
|
setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
|
|
|
|
if (switch_root_dir) {
|
|
/* Kill all remaining processes from the
|
|
* initrd, but don't wait for them, so that we
|
|
* can handle the SIGCHLD for them after
|
|
* deserializing. */
|
|
broadcast_signal(SIGTERM, false, true);
|
|
|
|
/* And switch root */
|
|
r = switch_root(switch_root_dir);
|
|
if (r < 0)
|
|
log_error("Failed to switch root, ignoring: %s", strerror(-r));
|
|
}
|
|
|
|
args_size = MAX(6, argc+1);
|
|
args = newa(const char*, args_size);
|
|
|
|
if (!switch_root_init) {
|
|
char sfd[16];
|
|
|
|
/* First try to spawn ourselves with the right
|
|
* path, and with full serialization. We do
|
|
* this only if the user didn't specify an
|
|
* explicit init to spawn. */
|
|
|
|
assert(serialization);
|
|
assert(fds);
|
|
|
|
snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
|
|
char_array_0(sfd);
|
|
|
|
i = 0;
|
|
args[i++] = SYSTEMD_BINARY_PATH;
|
|
if (switch_root_dir)
|
|
args[i++] = "--switched-root";
|
|
args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
|
|
args[i++] = "--deserialize";
|
|
args[i++] = sfd;
|
|
args[i++] = NULL;
|
|
|
|
/* 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 (serialization) {
|
|
fclose(serialization);
|
|
serialization = NULL;
|
|
}
|
|
|
|
if (fds) {
|
|
fdset_free(fds);
|
|
fds = NULL;
|
|
}
|
|
|
|
/* Reopen the console */
|
|
make_console_stdio();
|
|
|
|
for (j = 1, i = 1; j < argc; j++)
|
|
args[i++] = argv[j];
|
|
args[i++] = NULL;
|
|
assert(i <= args_size);
|
|
|
|
if (switch_root_init) {
|
|
args[0] = switch_root_init;
|
|
execv(args[0], (char* const*) args);
|
|
log_warning("Failed to execute configured init, trying fallback: %m");
|
|
}
|
|
|
|
args[0] = "/sbin/init";
|
|
execv(args[0], (char* const*) args);
|
|
|
|
if (errno == ENOENT) {
|
|
log_warning("No /sbin/init, trying fallback");
|
|
|
|
args[0] = "/bin/sh";
|
|
args[1] = NULL;
|
|
execv(args[0], (char* const*) args);
|
|
log_error("Failed to execute /bin/sh, giving up: %m");
|
|
} else
|
|
log_warning("Failed to execute /sbin/init, giving up: %m");
|
|
}
|
|
|
|
if (serialization)
|
|
fclose(serialization);
|
|
|
|
if (fds)
|
|
fdset_free(fds);
|
|
|
|
#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) {
|
|
const char * command_line[] = {
|
|
SYSTEMD_SHUTDOWN_BINARY_PATH,
|
|
shutdown_verb,
|
|
NULL
|
|
};
|
|
_cleanup_strv_free_ char **env_block = NULL;
|
|
env_block = strv_copy(environ);
|
|
|
|
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 */
|
|
watchdog_set_timeout(&arg_shutdown_watchdog);
|
|
watchdog_close(false);
|
|
|
|
/* 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("Failed to execute shutdown binary, freezing: %m");
|
|
}
|
|
|
|
if (getpid() == 1)
|
|
freeze();
|
|
|
|
return retval;
|
|
}
|