e8e581bf25
The information about the unit for which files are being parsed is passed all the way down. This way messages land in the journal with proper UNIT=... or USER_UNIT=... attribution. 'systemctl status' and 'journalctl -u' not displaying those messages has been a source of confusion for users, since the journal entry for a misspelt setting was often logged quite a bit earlier than the failure to start a unit. Based-on-a-patch-by: Oleksii Shevchuk <alxchk@gmail.com>
1948 lines
74 KiB
C
1948 lines
74 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 <dbus/dbus.h>
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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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#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 "bus-errors.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 "sd-daemon.h"
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#include "sd-messages.h"
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#include "mount-setup.h"
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#include "loopback-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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#include "hostname-setup.h"
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#include "machine-id-setup.h"
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#include "locale-setup.h"
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#include "selinux-setup.h"
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#include "ima-setup.h"
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#include "fileio.h"
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#include "smack-setup.h"
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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 bool arg_show_status = true;
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static bool arg_switched_root = false;
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static char **arg_default_controllers = NULL;
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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_runtime_watchdog = 0;
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static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
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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 (!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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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("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
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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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assert_se(sigaction(sig, &sa, NULL) == 0);
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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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assert_se(chdir("/") == 0);
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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 %lu.", signal_to_string(sig), (unsigned long) 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 %lu.", (unsigned long) 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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if ((r = parse_boolean(word + 20)) < 0)
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log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
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else
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arg_show_status = r;
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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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char *eq;
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int r;
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cenv = strdup(word + 15);
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if (!cenv)
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return -ENOMEM;
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eq = strchr(cenv, '=');
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if (!eq) {
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if (!env_name_is_valid(cenv))
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log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
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else {
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r = unsetenv(cenv);
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if (r < 0)
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log_warning("Unsetting environment variable '%s' failed, ignoring: %m", cenv);
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}
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} else {
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if (!env_assignment_is_valid(cenv))
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log_warning("Environment variable assignment '%s' is not valid. Ignoring.", cenv);
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else {
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*eq = 0;
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r = setenv(cenv, eq + 1, 1);
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if (r < 0)
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log_warning("Setting environment variable '%s=%s' failed, ignoring: %m", cenv, eq + 1);
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}
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}
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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 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"
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" 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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} else if (streq(word, "quiet"))
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arg_show_status = false;
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else if (!in_initrd()) {
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unsigned i;
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/* SysV compatibility */
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for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
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if (streq(word, rlmap[i]))
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return set_default_unit(rlmap[i+1]);
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}
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return 0;
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}
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#define DEFINE_SETTER(name, func, descr) \
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static int name(const char *unit, \
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const char *filename, \
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unsigned line, \
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const char *section, \
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const char *lvalue, \
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int ltype, \
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const char *rvalue, \
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void *data, \
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void *userdata) { \
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\
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int r; \
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\
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assert(filename); \
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assert(lvalue); \
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assert(rvalue); \
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\
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r = func(rvalue); \
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if (r < 0) \
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log_syntax(unit, LOG_ERR, filename, line, -r, \
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"Invalid " descr "'%s': %s", \
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rvalue, strerror(-r)); \
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\
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return 0; \
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}
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DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
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DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
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DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
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DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
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static int config_parse_cpu_affinity2(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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char *w;
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size_t l;
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char *state;
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cpu_set_t *c = NULL;
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unsigned ncpus = 0;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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FOREACH_WORD_QUOTED(w, l, rvalue, state) {
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char *t;
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int r;
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unsigned cpu;
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if (!(t = strndup(w, l)))
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return log_oom();
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r = safe_atou(t, &cpu);
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free(t);
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if (!c)
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if (!(c = cpu_set_malloc(&ncpus)))
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return log_oom();
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if (r < 0 || cpu >= ncpus) {
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log_syntax(unit, LOG_ERR, filename, line, -r,
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"Failed to parse CPU affinity '%s'", rvalue);
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CPU_FREE(c);
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return -EBADMSG;
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}
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CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
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}
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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) {
|
|
if (!arg_join_controllers)
|
|
return;
|
|
|
|
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,
|
|
const char *lvalue,
|
|
int ltype,
|
|
const char *rvalue,
|
|
void *data,
|
|
void *userdata) {
|
|
|
|
unsigned n = 0;
|
|
char *state, *w;
|
|
size_t length;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
free_join_controllers();
|
|
|
|
FOREACH_WORD_QUOTED(w, length, rvalue, state) {
|
|
char *s, **l;
|
|
|
|
s = strndup(w, length);
|
|
if (!s)
|
|
return log_oom();
|
|
|
|
l = strv_split(s, ",");
|
|
free(s);
|
|
|
|
strv_uniq(l);
|
|
|
|
if (strv_length(l) <= 1) {
|
|
strv_free(l);
|
|
continue;
|
|
}
|
|
|
|
if (!arg_join_controllers) {
|
|
arg_join_controllers = new(char**, 2);
|
|
if (!arg_join_controllers) {
|
|
strv_free(l);
|
|
return log_oom();
|
|
}
|
|
|
|
arg_join_controllers[0] = l;
|
|
arg_join_controllers[1] = NULL;
|
|
|
|
n = 1;
|
|
} else {
|
|
char ***a;
|
|
char ***t;
|
|
|
|
t = new0(char**, n+2);
|
|
if (!t) {
|
|
strv_free(l);
|
|
return log_oom();
|
|
}
|
|
|
|
n = 0;
|
|
|
|
for (a = arg_join_controllers; *a; a++) {
|
|
|
|
if (strv_overlap(*a, l)) {
|
|
char **c;
|
|
|
|
c = strv_merge(*a, l);
|
|
if (!c) {
|
|
strv_free(l);
|
|
strv_free_free(t);
|
|
return log_oom();
|
|
}
|
|
|
|
strv_free(l);
|
|
l = c;
|
|
} else {
|
|
char **c;
|
|
|
|
c = strv_copy(*a);
|
|
if (!c) {
|
|
strv_free(l);
|
|
strv_free_free(t);
|
|
return log_oom();
|
|
}
|
|
|
|
t[n++] = c;
|
|
}
|
|
}
|
|
|
|
t[n++] = strv_uniq(l);
|
|
|
|
strv_free_free(arg_join_controllers);
|
|
arg_join_controllers = t;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_config_file(void) {
|
|
|
|
const ConfigTableItem items[] = {
|
|
{ "Manager", "LogLevel", config_parse_level2, 0, NULL },
|
|
{ "Manager", "LogTarget", config_parse_target, 0, NULL },
|
|
{ "Manager", "LogColor", config_parse_color, 0, NULL },
|
|
{ "Manager", "LogLocation", config_parse_location, 0, NULL },
|
|
{ "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
|
|
{ "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
|
|
{ "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
|
|
{ "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
|
|
{ "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
|
|
{ "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers },
|
|
{ "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
|
|
{ "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
|
|
{ "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
|
|
{ "Manager", "RuntimeWatchdogSec", config_parse_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", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
|
|
{ "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
|
|
{ "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
|
|
{ "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
|
|
{ "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
|
|
{ "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
|
|
{ "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
|
|
{ "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
|
|
{ "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
|
|
{ "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
|
|
{ "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
|
|
{ "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
|
|
{ "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
|
|
{ "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
|
|
{ "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
|
|
{ "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
|
|
{ NULL, NULL, NULL, 0, NULL }
|
|
};
|
|
|
|
FILE _cleanup_fclose_ *f;
|
|
const char *fn;
|
|
int r;
|
|
|
|
fn = arg_running_as == SYSTEMD_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
|
|
f = fopen(fn, "re");
|
|
if (!f) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
|
|
log_warning("Failed to open configuration file '%s': %m", fn);
|
|
return 0;
|
|
}
|
|
|
|
r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, NULL);
|
|
if (r < 0)
|
|
log_warning("Failed to parse configuration file: %s", strerror(-r));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_proc_cmdline(void) {
|
|
char *line, *w, *state;
|
|
int r;
|
|
size_t l;
|
|
|
|
/* Don't read /proc/cmdline if we are in a container, since
|
|
* that is only relevant for the host system */
|
|
if (detect_container(NULL) > 0)
|
|
return 0;
|
|
|
|
if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
|
|
log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
|
|
return 0;
|
|
}
|
|
|
|
FOREACH_WORD_QUOTED(w, l, line, state) {
|
|
char *word;
|
|
|
|
if (!(word = strndup(w, l))) {
|
|
r = -ENOMEM;
|
|
goto finish;
|
|
}
|
|
|
|
r = parse_proc_cmdline_word(word);
|
|
if (r < 0) {
|
|
log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
|
|
free(word);
|
|
goto finish;
|
|
}
|
|
|
|
free(word);
|
|
}
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
free(line);
|
|
return r;
|
|
}
|
|
|
|
static int parse_argv(int argc, char *argv[]) {
|
|
|
|
enum {
|
|
ARG_LOG_LEVEL = 0x100,
|
|
ARG_LOG_TARGET,
|
|
ARG_LOG_COLOR,
|
|
ARG_LOG_LOCATION,
|
|
ARG_UNIT,
|
|
ARG_SYSTEM,
|
|
ARG_USER,
|
|
ARG_TEST,
|
|
ARG_VERSION,
|
|
ARG_DUMP_CONFIGURATION_ITEMS,
|
|
ARG_DUMP_CORE,
|
|
ARG_CRASH_SHELL,
|
|
ARG_CONFIRM_SPAWN,
|
|
ARG_SHOW_STATUS,
|
|
ARG_DESERIALIZE,
|
|
ARG_SWITCHED_ROOT,
|
|
ARG_INTROSPECT,
|
|
ARG_DEFAULT_STD_OUTPUT,
|
|
ARG_DEFAULT_STD_ERROR
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
{ "log-level", required_argument, NULL, ARG_LOG_LEVEL },
|
|
{ "log-target", required_argument, NULL, ARG_LOG_TARGET },
|
|
{ "log-color", optional_argument, NULL, ARG_LOG_COLOR },
|
|
{ "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
|
|
{ "unit", required_argument, NULL, ARG_UNIT },
|
|
{ "system", no_argument, NULL, ARG_SYSTEM },
|
|
{ "user", no_argument, NULL, ARG_USER },
|
|
{ "test", no_argument, NULL, ARG_TEST },
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version", no_argument, NULL, ARG_VERSION },
|
|
{ "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
|
|
{ "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
|
|
{ "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
|
|
{ "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
|
|
{ "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
|
|
{ "deserialize", required_argument, NULL, ARG_DESERIALIZE },
|
|
{ "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
|
|
{ "introspect", optional_argument, NULL, ARG_INTROSPECT },
|
|
{ "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
|
|
{ "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
int c, r;
|
|
|
|
assert(argc >= 1);
|
|
assert(argv);
|
|
|
|
if (getpid() == 1)
|
|
opterr = 0;
|
|
|
|
while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
|
|
|
|
switch (c) {
|
|
|
|
case ARG_LOG_LEVEL:
|
|
if ((r = log_set_max_level_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log level %s.", optarg);
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_LOG_TARGET:
|
|
|
|
if ((r = log_set_target_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log target %s.", optarg);
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_LOG_COLOR:
|
|
|
|
if (optarg) {
|
|
if ((r = log_show_color_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log color setting %s.", optarg);
|
|
return r;
|
|
}
|
|
} else
|
|
log_show_color(true);
|
|
|
|
break;
|
|
|
|
case ARG_LOG_LOCATION:
|
|
|
|
if (optarg) {
|
|
if ((r = log_show_location_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse log location setting %s.", optarg);
|
|
return r;
|
|
}
|
|
} else
|
|
log_show_location(true);
|
|
|
|
break;
|
|
|
|
case ARG_DEFAULT_STD_OUTPUT:
|
|
|
|
if ((r = exec_output_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse default standard output setting %s.", optarg);
|
|
return r;
|
|
} else
|
|
arg_default_std_output = r;
|
|
break;
|
|
|
|
case ARG_DEFAULT_STD_ERROR:
|
|
|
|
if ((r = exec_output_from_string(optarg)) < 0) {
|
|
log_error("Failed to parse default standard error output setting %s.", optarg);
|
|
return r;
|
|
} else
|
|
arg_default_std_error = r;
|
|
break;
|
|
|
|
case ARG_UNIT:
|
|
|
|
if ((r = set_default_unit(optarg)) < 0) {
|
|
log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARG_SYSTEM:
|
|
arg_running_as = SYSTEMD_SYSTEM;
|
|
break;
|
|
|
|
case ARG_USER:
|
|
arg_running_as = SYSTEMD_USER;
|
|
break;
|
|
|
|
case ARG_TEST:
|
|
arg_action = ACTION_TEST;
|
|
break;
|
|
|
|
case ARG_VERSION:
|
|
arg_action = ACTION_VERSION;
|
|
break;
|
|
|
|
case ARG_DUMP_CONFIGURATION_ITEMS:
|
|
arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
|
|
break;
|
|
|
|
case ARG_DUMP_CORE:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse dump core boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_dump_core = r;
|
|
break;
|
|
|
|
case ARG_CRASH_SHELL:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse crash shell boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_crash_shell = r;
|
|
break;
|
|
|
|
case ARG_CONFIRM_SPAWN:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse confirm spawn boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_confirm_spawn = r;
|
|
break;
|
|
|
|
case ARG_SHOW_STATUS:
|
|
r = optarg ? parse_boolean(optarg) : 1;
|
|
if (r < 0) {
|
|
log_error("Failed to parse show status boolean %s.", optarg);
|
|
return r;
|
|
}
|
|
arg_show_status = r;
|
|
break;
|
|
|
|
case ARG_DESERIALIZE: {
|
|
int fd;
|
|
FILE *f;
|
|
|
|
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 ARG_INTROSPECT: {
|
|
const char * const * i = NULL;
|
|
|
|
for (i = bus_interface_table; *i; i += 2)
|
|
if (!optarg || streq(i[0], optarg)) {
|
|
fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
|
|
"<node>\n", stdout);
|
|
fputs(i[1], stdout);
|
|
fputs("</node>\n", stdout);
|
|
|
|
if (optarg)
|
|
break;
|
|
}
|
|
|
|
if (!i[0] && optarg)
|
|
log_error("Unknown interface %s.", optarg);
|
|
|
|
arg_action = ACTION_DONE;
|
|
break;
|
|
}
|
|
|
|
case 'h':
|
|
arg_action = ACTION_HELP;
|
|
break;
|
|
|
|
case 'D':
|
|
log_set_max_level(LOG_DEBUG);
|
|
break;
|
|
|
|
case 'b':
|
|
case 's':
|
|
case 'z':
|
|
/* Just to eat away the sysvinit kernel
|
|
* cmdline args without getopt() error
|
|
* messages that we'll parse in
|
|
* parse_proc_cmdline_word() or ignore. */
|
|
|
|
case '?':
|
|
default:
|
|
if (getpid() != 1) {
|
|
log_error("Unknown option code %c", c);
|
|
return -EINVAL;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (optind < argc && getpid() != 1) {
|
|
/* Hmm, when we aren't run as init system
|
|
* let's complain about excess arguments */
|
|
|
|
log_error("Excess arguments.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (detect_container(NULL) > 0) {
|
|
char **a;
|
|
|
|
/* All /proc/cmdline arguments the kernel didn't
|
|
* understand it passed to us. We're not really
|
|
* interested in that usually since /proc/cmdline is
|
|
* more interesting and complete. With one exception:
|
|
* if we are run in a container /proc/cmdline is not
|
|
* relevant for the container, hence we rely on argv[]
|
|
* instead. */
|
|
|
|
for (a = argv; a < argv + argc; a++)
|
|
if ((r = parse_proc_cmdline_word(*a)) < 0) {
|
|
log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
|
|
return r;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int help(void) {
|
|
|
|
printf("%s [OPTIONS...]\n\n"
|
|
"Starts up and maintains the system or user services.\n\n"
|
|
" -h --help Show this help\n"
|
|
" --test Determine startup sequence, dump it and exit\n"
|
|
" --dump-configuration-items Dump understood unit configuration items\n"
|
|
" --introspect[=INTERFACE] Extract D-Bus interface data\n"
|
|
" --unit=UNIT Set default unit\n"
|
|
" --system Run a system instance, even if PID != 1\n"
|
|
" --user Run a user instance\n"
|
|
" --dump-core[=0|1] Dump core on crash\n"
|
|
" --crash-shell[=0|1] Run shell on crash\n"
|
|
" --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
|
|
" --show-status[=0|1] Show status updates on the console during bootup\n"
|
|
" --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
|
|
" --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
|
|
" --log-color[=0|1] Highlight important log messages\n"
|
|
" --log-location[=0|1] Include code location in log messages\n"
|
|
" --default-standard-output= Set default standard output for services\n"
|
|
" --default-standard-error= Set default standard error output for services\n",
|
|
program_invocation_short_name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int version(void) {
|
|
puts(PACKAGE_STRING);
|
|
puts(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);
|
|
|
|
/* Make sure nothing is really destructed when we shut down */
|
|
m->n_reloading ++;
|
|
|
|
r = manager_open_serialization(m, &f);
|
|
if (r < 0) {
|
|
log_error("Failed to create serialization file: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
fds = fdset_new();
|
|
if (!fds) {
|
|
r = -ENOMEM;
|
|
log_error("Failed to allocate fd set: %s", strerror(-r));
|
|
goto fail;
|
|
}
|
|
|
|
r = manager_serialize(m, f, fds, 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 struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
|
|
const char *e;
|
|
unsigned long long a, b;
|
|
|
|
assert(t);
|
|
|
|
e = getenv("RD_TIMESTAMP");
|
|
if (!e)
|
|
return NULL;
|
|
|
|
if (sscanf(e, "%llu %llu", &a, &b) != 2)
|
|
return NULL;
|
|
|
|
t->realtime = (usec_t) a;
|
|
t->monotonic = (usec_t) b;
|
|
|
|
return t;
|
|
}
|
|
|
|
static void test_mtab(void) {
|
|
char *p;
|
|
|
|
/* Check that /etc/mtab is a symlink */
|
|
|
|
if (readlink_malloc("/etc/mtab", &p) >= 0) {
|
|
bool b;
|
|
|
|
b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
|
|
free(p);
|
|
|
|
if (b)
|
|
return;
|
|
}
|
|
|
|
log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
|
|
"This is not supported anymore. "
|
|
"Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
|
|
}
|
|
|
|
static void test_usr(void) {
|
|
|
|
/* Check that /usr is not a separate fs */
|
|
|
|
if (dir_is_empty("/usr") <= 0)
|
|
return;
|
|
|
|
log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
|
|
"Some things will probably break (sometimes even silently) in mysterious ways. "
|
|
"Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
|
|
}
|
|
|
|
static void test_cgroups(void) {
|
|
|
|
if (access("/proc/cgroups", F_OK) >= 0)
|
|
return;
|
|
|
|
log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
|
|
"Systems without control groups are not supported. "
|
|
"We will now sleep for 10s, and then continue boot-up. "
|
|
"Expect breakage and please do not file bugs. "
|
|
"Instead fix your kernel and enable CONFIG_CGROUPS. "
|
|
"Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
|
|
|
|
sleep(10);
|
|
}
|
|
|
|
static int initialize_join_controllers(void) {
|
|
/* By default, mount "cpu" + "cpuacct" together, and "net_cls"
|
|
* + "net_prio". We'd like to add "cpuset" to the mix, but
|
|
* "cpuset" does't really work for groups with no initialized
|
|
* attributes. */
|
|
|
|
arg_join_controllers = new(char**, 3);
|
|
if (!arg_join_controllers)
|
|
return -ENOMEM;
|
|
|
|
arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
|
|
if (!arg_join_controllers[0])
|
|
return -ENOMEM;
|
|
|
|
arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
|
|
if (!arg_join_controllers[1])
|
|
return -ENOMEM;
|
|
|
|
arg_join_controllers[2] = NULL;
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
Manager *m = NULL;
|
|
int r, retval = EXIT_FAILURE;
|
|
usec_t before_startup, after_startup;
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
FDSet *fds = NULL;
|
|
bool reexecute = false;
|
|
const char *shutdown_verb = NULL;
|
|
dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
|
|
static char systemd[] = "systemd";
|
|
bool skip_setup = false;
|
|
int j;
|
|
bool loaded_policy = false;
|
|
bool arm_reboot_watchdog = false;
|
|
bool queue_default_job = false;
|
|
char *switch_root_dir = NULL, *switch_root_init = NULL;
|
|
static struct rlimit saved_rlimit_nofile = { 0, 0 };
|
|
|
|
#ifdef HAVE_SYSV_COMPAT
|
|
if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
|
|
/* This is compatibility support for SysV, where
|
|
* calling init as a user is identical to telinit. */
|
|
|
|
errno = -ENOENT;
|
|
execv(SYSTEMCTL_BINARY_PATH, argv);
|
|
log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/* Determine if this is a reexecution or normal bootup. We do
|
|
* the full command line parsing much later, so let's just
|
|
* have a quick peek here. */
|
|
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);
|
|
|
|
if (getpid() == 1 && detect_container(NULL) <= 0) {
|
|
|
|
/* Running outside of a container as PID 1 */
|
|
arg_running_as = SYSTEMD_SYSTEM;
|
|
make_null_stdio();
|
|
log_set_target(LOG_TARGET_KMSG);
|
|
log_open();
|
|
|
|
if (in_initrd()) {
|
|
char *rd_timestamp = NULL;
|
|
|
|
dual_timestamp_get(&initrd_timestamp);
|
|
asprintf(&rd_timestamp, "%llu %llu",
|
|
(unsigned long long) initrd_timestamp.realtime,
|
|
(unsigned long long) initrd_timestamp.monotonic);
|
|
if (rd_timestamp) {
|
|
setenv("RD_TIMESTAMP", rd_timestamp, 1);
|
|
free(rd_timestamp);
|
|
}
|
|
}
|
|
|
|
if (!skip_setup) {
|
|
mount_setup_early();
|
|
if (selinux_setup(&loaded_policy) < 0)
|
|
goto finish;
|
|
if (ima_setup() < 0)
|
|
goto finish;
|
|
if (smack_setup() < 0)
|
|
goto finish;
|
|
}
|
|
|
|
if (label_init(NULL) < 0)
|
|
goto finish;
|
|
|
|
if (!skip_setup) {
|
|
if (hwclock_is_localtime() > 0) {
|
|
int min;
|
|
|
|
/* The first-time call to settimeofday() does a time warp in the kernel */
|
|
r = hwclock_set_timezone(&min);
|
|
if (r < 0)
|
|
log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
|
|
else
|
|
log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
|
|
} else if (!in_initrd()) {
|
|
/*
|
|
* Do dummy first-time call to seal the kernel's time warp magic
|
|
*
|
|
* Do not call this this from inside the initrd. The initrd might not
|
|
* carry /etc/adjtime with LOCAL, but the real system could be set up
|
|
* that way. In such case, we need to delay the time-warp or the sealing
|
|
* until we reach the real system.
|
|
*/
|
|
hwclock_reset_timezone();
|
|
|
|
/* Tell the kernel our time zone */
|
|
r = hwclock_set_timezone(NULL);
|
|
if (r < 0)
|
|
log_error("Failed to set the kernel's time zone, ignoring: %s", strerror(-r));
|
|
}
|
|
}
|
|
|
|
/* Set the default for later on, but don't actually
|
|
* open the logs like this for now. Note that if we
|
|
* are transitioning from the initrd there might still
|
|
* be journal fd open, and we shouldn't attempt
|
|
* opening that before we parsed /proc/cmdline which
|
|
* might redirect output elsewhere. */
|
|
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
|
|
|
|
} else if (getpid() == 1) {
|
|
|
|
/* Running inside a container, as PID 1 */
|
|
arg_running_as = SYSTEMD_SYSTEM;
|
|
log_set_target(LOG_TARGET_CONSOLE);
|
|
log_open();
|
|
|
|
/* For the later on, see above... */
|
|
log_set_target(LOG_TARGET_JOURNAL);
|
|
|
|
} else {
|
|
|
|
/* Running as user instance */
|
|
arg_running_as = SYSTEMD_USER;
|
|
log_set_target(LOG_TARGET_AUTO);
|
|
log_open();
|
|
}
|
|
|
|
/* Initialize default unit */
|
|
r = set_default_unit(SPECIAL_DEFAULT_TARGET);
|
|
if (r < 0) {
|
|
log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = initialize_join_controllers();
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
/* Mount /proc, /sys and friends, so that /proc/cmdline and
|
|
* /proc/$PID/fd is available. */
|
|
if (getpid() == 1) {
|
|
r = mount_setup(loaded_policy);
|
|
if (r < 0)
|
|
goto finish;
|
|
}
|
|
|
|
/* Reset all signal handlers. */
|
|
assert_se(reset_all_signal_handlers() == 0);
|
|
|
|
/* If we are init, we can block sigkill. Yay. */
|
|
ignore_signals(SIGNALS_IGNORE, -1);
|
|
|
|
if (parse_config_file() < 0)
|
|
goto finish;
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM)
|
|
if (parse_proc_cmdline() < 0)
|
|
goto finish;
|
|
|
|
log_parse_environment();
|
|
|
|
if (parse_argv(argc, argv) < 0)
|
|
goto finish;
|
|
|
|
if (arg_action == ACTION_TEST &&
|
|
geteuid() == 0) {
|
|
log_error("Don't run test mode as root.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_USER &&
|
|
arg_action == ACTION_RUN &&
|
|
sd_booted() <= 0) {
|
|
log_error("Trying to run as user instance, but the system has not been booted with systemd.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM &&
|
|
arg_action == ACTION_RUN &&
|
|
running_in_chroot() > 0) {
|
|
log_error("Cannot be run in a chroot() environment.");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_action == ACTION_HELP) {
|
|
retval = help();
|
|
goto finish;
|
|
} else if (arg_action == ACTION_VERSION) {
|
|
retval = version();
|
|
goto finish;
|
|
} else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
|
|
unit_dump_config_items(stdout);
|
|
retval = EXIT_SUCCESS;
|
|
goto finish;
|
|
} else if (arg_action == ACTION_DONE) {
|
|
retval = EXIT_SUCCESS;
|
|
goto finish;
|
|
}
|
|
|
|
assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
|
|
|
|
/* Close logging fds, in order not to confuse fdset below */
|
|
log_close();
|
|
|
|
/* Remember open file descriptors for later deserialization */
|
|
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);
|
|
|
|
/* Set up PATH unless it is already set */
|
|
setenv("PATH",
|
|
#ifdef HAVE_SPLIT_USR
|
|
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
|
|
#else
|
|
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
|
|
#endif
|
|
arg_running_as == SYSTEMD_SYSTEM);
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM) {
|
|
/* Parse the data passed to us. We leave this
|
|
* variables set, but the manager later on will not
|
|
* pass them on to our children. */
|
|
if (!in_initrd())
|
|
parse_initrd_timestamp(&initrd_timestamp);
|
|
|
|
/* Unset some environment variables passed in from the
|
|
* kernel that don't really make sense for us. */
|
|
unsetenv("HOME");
|
|
unsetenv("TERM");
|
|
|
|
/* When we are invoked by a shell, these might be set,
|
|
* but make little sense to pass on */
|
|
unsetenv("PWD");
|
|
unsetenv("SHLVL");
|
|
unsetenv("_");
|
|
|
|
/* When we are invoked by a chroot-like tool such as
|
|
* nspawn, these might be set, but make little sense
|
|
* to pass on */
|
|
unsetenv("USER");
|
|
unsetenv("LOGNAME");
|
|
|
|
/* We suppress the socket activation env vars, as
|
|
* we'll try to match *any* open fd to units if
|
|
* possible. */
|
|
unsetenv("LISTEN_FDS");
|
|
unsetenv("LISTEN_PID");
|
|
|
|
/* All other variables are left as is, so that clients
|
|
* can still read them via /proc/1/environ */
|
|
}
|
|
|
|
/* Move out of the way, so that we won't block unmounts */
|
|
assert_se(chdir("/") == 0);
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM) {
|
|
/* Become a session leader if we aren't one yet. */
|
|
setsid();
|
|
|
|
/* Disable the umask logic */
|
|
umask(0);
|
|
}
|
|
|
|
/* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
|
|
dbus_connection_set_change_sigpipe(FALSE);
|
|
|
|
/* Reset the console, but only if this is really init and we
|
|
* are freshly booted */
|
|
if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN)
|
|
console_setup(getpid() == 1 && !skip_setup);
|
|
|
|
/* Open the logging devices, if possible and necessary */
|
|
log_open();
|
|
|
|
/* Make sure we leave a core dump without panicing the
|
|
* kernel. */
|
|
if (getpid() == 1) {
|
|
install_crash_handler();
|
|
|
|
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
|
|
log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")");
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
|
|
locale_setup();
|
|
|
|
if (arg_show_status || plymouth_running())
|
|
status_welcome();
|
|
|
|
#ifdef HAVE_KMOD
|
|
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(arg_capability_bounding_set_drop, true);
|
|
if (r < 0) {
|
|
log_error("Failed to drop capability bounding set: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
|
|
if (r < 0) {
|
|
log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_USER) {
|
|
/* Become reaper of our children */
|
|
if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
|
|
log_warning("Failed to make us a subreaper: %m");
|
|
if (errno == EINVAL)
|
|
log_info("Perhaps the kernel version is too old (< 3.4?)");
|
|
}
|
|
}
|
|
|
|
if (arg_running_as == SYSTEMD_SYSTEM)
|
|
bump_rlimit_nofile(&saved_rlimit_nofile);
|
|
|
|
r = manager_new(arg_running_as, &m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate manager object: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
m->confirm_spawn = arg_confirm_spawn;
|
|
m->default_std_output = arg_default_std_output;
|
|
m->default_std_error = arg_default_std_error;
|
|
m->runtime_watchdog = arg_runtime_watchdog;
|
|
m->shutdown_watchdog = arg_shutdown_watchdog;
|
|
|
|
manager_set_default_rlimits(m, arg_default_rlimit);
|
|
|
|
if (dual_timestamp_is_set(&initrd_timestamp))
|
|
m->initrd_timestamp = initrd_timestamp;
|
|
|
|
if (arg_default_controllers)
|
|
manager_set_default_controllers(m, arg_default_controllers);
|
|
|
|
manager_set_show_status(m, arg_show_status);
|
|
|
|
/* Remember whether we should queue the default job */
|
|
queue_default_job = !serialization || arg_switched_root;
|
|
|
|
before_startup = now(CLOCK_MONOTONIC);
|
|
|
|
r = manager_startup(m, serialization, fds);
|
|
if (r < 0)
|
|
log_error("Failed to fully start up daemon: %s", strerror(-r));
|
|
|
|
/* This will close all file descriptors that were opened, but
|
|
* not claimed by any unit. */
|
|
fdset_free(fds);
|
|
|
|
if (serialization) {
|
|
fclose(serialization);
|
|
serialization = NULL;
|
|
}
|
|
|
|
if (queue_default_job) {
|
|
DBusError error;
|
|
Unit *target = NULL;
|
|
Job *default_unit_job;
|
|
|
|
dbus_error_init(&error);
|
|
|
|
log_debug("Activating default unit: %s", arg_default_unit);
|
|
|
|
r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
|
|
if (r < 0) {
|
|
log_error("Failed to load default target: %s", bus_error(&error, r));
|
|
dbus_error_free(&error);
|
|
} else if (target->load_state == UNIT_ERROR)
|
|
log_error("Failed to load default target: %s", strerror(-target->load_error));
|
|
else if (target->load_state == UNIT_MASKED)
|
|
log_error("Default target masked.");
|
|
|
|
if (!target || target->load_state != UNIT_LOADED) {
|
|
log_info("Trying to load rescue target...");
|
|
|
|
r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
|
|
if (r < 0) {
|
|
log_error("Failed to load rescue target: %s", bus_error(&error, r));
|
|
dbus_error_free(&error);
|
|
goto finish;
|
|
} else if (target->load_state == UNIT_ERROR) {
|
|
log_error("Failed to load rescue target: %s", strerror(-target->load_error));
|
|
goto finish;
|
|
} else if (target->load_state == UNIT_MASKED) {
|
|
log_error("Rescue target masked.");
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
assert(target->load_state == UNIT_LOADED);
|
|
|
|
if (arg_action == ACTION_TEST) {
|
|
printf("-> By units:\n");
|
|
manager_dump_units(m, stdout, "\t");
|
|
}
|
|
|
|
r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
|
|
if (r == -EPERM) {
|
|
log_error("Default target could not be isolated, starting instead: %s", bus_error(&error, r));
|
|
dbus_error_free(&error);
|
|
|
|
r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
|
|
if (r < 0) {
|
|
log_error("Failed to start default target: %s", bus_error(&error, r));
|
|
dbus_error_free(&error);
|
|
goto finish;
|
|
}
|
|
} else if (r < 0) {
|
|
log_error("Failed to isolate default target: %s", bus_error(&error, r));
|
|
dbus_error_free(&error);
|
|
goto finish;
|
|
}
|
|
|
|
m->default_unit_job_id = default_unit_job->id;
|
|
|
|
after_startup = now(CLOCK_MONOTONIC);
|
|
log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
|
|
"Loaded units and determined initial transaction in %s.",
|
|
format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 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);
|
|
strv_free(arg_default_controllers);
|
|
free_join_controllers();
|
|
|
|
dbus_shutdown();
|
|
label_finish();
|
|
|
|
if (reexecute) {
|
|
const char **args;
|
|
unsigned i, args_size;
|
|
|
|
/* Close and disarm the watchdog, so that the new
|
|
* instance can reinitialize it, but doesn't get
|
|
* rebooted while we do that */
|
|
watchdog_close(true);
|
|
|
|
/* Reset the RLIMIT_NOFILE to the kernel default, so
|
|
* that the new systemd can pass the kernel default to
|
|
* its child processes */
|
|
if (saved_rlimit_nofile.rlim_cur > 0)
|
|
setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
|
|
|
|
if (switch_root_dir) {
|
|
/* Kill all remaining processes from the
|
|
* initrd, but don't wait for them, so that we
|
|
* can handle the SIGCHLD for them after
|
|
* deserializing. */
|
|
broadcast_signal(SIGTERM, false);
|
|
|
|
/* And switch root */
|
|
r = switch_root(switch_root_dir);
|
|
if (r < 0)
|
|
log_error("Failed to switch root, ignoring: %s", strerror(-r));
|
|
}
|
|
|
|
args_size = MAX(6, argc+1);
|
|
args = newa(const char*, args_size);
|
|
|
|
if (!switch_root_init) {
|
|
char sfd[16];
|
|
|
|
/* First try to spawn ourselves with the right
|
|
* path, and with full serialization. We do
|
|
* this only if the user didn't specify an
|
|
* explicit init to spawn. */
|
|
|
|
assert(serialization);
|
|
assert(fds);
|
|
|
|
snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
|
|
char_array_0(sfd);
|
|
|
|
i = 0;
|
|
args[i++] = SYSTEMD_BINARY_PATH;
|
|
if (switch_root_dir)
|
|
args[i++] = "--switched-root";
|
|
args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
|
|
args[i++] = "--deserialize";
|
|
args[i++] = sfd;
|
|
args[i++] = NULL;
|
|
|
|
assert(i <= args_size);
|
|
execv(args[0], (char* const*) args);
|
|
}
|
|
|
|
/* Try the fallback, if there is any, without any
|
|
* serialization. We pass the original argv[] and
|
|
* envp[]. (Well, modulo the ordering changes due to
|
|
* getopt() in argv[], and some cleanups in envp[],
|
|
* but let's hope that doesn't matter.) */
|
|
|
|
if (serialization) {
|
|
fclose(serialization);
|
|
serialization = NULL;
|
|
}
|
|
|
|
if (fds) {
|
|
fdset_free(fds);
|
|
fds = NULL;
|
|
}
|
|
|
|
/* Reopen the console */
|
|
make_console_stdio();
|
|
|
|
for (j = 1, i = 1; j < argc; j++)
|
|
args[i++] = argv[j];
|
|
args[i++] = NULL;
|
|
assert(i <= args_size);
|
|
|
|
if (switch_root_init) {
|
|
args[0] = switch_root_init;
|
|
execv(args[0], (char* const*) args);
|
|
log_warning("Failed to execute configured init, trying fallback: %m");
|
|
}
|
|
|
|
args[0] = "/sbin/init";
|
|
execv(args[0], (char* const*) args);
|
|
|
|
if (errno == ENOENT) {
|
|
log_warning("No /sbin/init, trying fallback");
|
|
|
|
args[0] = "/bin/sh";
|
|
args[1] = NULL;
|
|
execv(args[0], (char* const*) args);
|
|
log_error("Failed to execute /bin/sh, giving up: %m");
|
|
} else
|
|
log_warning("Failed to execute /sbin/init, giving up: %m");
|
|
}
|
|
|
|
if (serialization)
|
|
fclose(serialization);
|
|
|
|
if (fds)
|
|
fdset_free(fds);
|
|
|
|
if (shutdown_verb) {
|
|
const char * command_line[] = {
|
|
SYSTEMD_SHUTDOWN_BINARY_PATH,
|
|
shutdown_verb,
|
|
NULL
|
|
};
|
|
char **env_block;
|
|
|
|
if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
|
|
char e[32];
|
|
|
|
/* If we reboot let's set the shutdown
|
|
* watchdog and tell the shutdown binary to
|
|
* repeatedly ping it */
|
|
watchdog_set_timeout(&arg_shutdown_watchdog);
|
|
watchdog_close(false);
|
|
|
|
/* Tell the binary how often to ping */
|
|
snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog);
|
|
char_array_0(e);
|
|
|
|
env_block = strv_append(environ, e);
|
|
} else {
|
|
env_block = strv_copy(environ);
|
|
watchdog_close(true);
|
|
}
|
|
|
|
execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
|
|
free(env_block);
|
|
log_error("Failed to execute shutdown binary, freezing: %m");
|
|
}
|
|
|
|
if (getpid() == 1)
|
|
freeze();
|
|
|
|
return retval;
|
|
}
|