From 78a825f216d39ee0295b00647b059d45467e1d02 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 12 Apr 2012 12:58:55 +0200 Subject: rename machine-id-main.c tomacht the binary and move main.c to core/ --- src/main.c | 1686 ------------------------------------------------------------ 1 file changed, 1686 deletions(-) delete mode 100644 src/main.c (limited to 'src/main.c') diff --git a/src/main.c b/src/main.c deleted file mode 100644 index f03b959f68..0000000000 --- a/src/main.c +++ /dev/null @@ -1,1686 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see . -***/ - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "manager.h" -#include "log.h" -#include "mount-setup.h" -#include "hostname-setup.h" -#include "loopback-setup.h" -#include "kmod-setup.h" -#include "locale-setup.h" -#include "selinux-setup.h" -#include "ima-setup.h" -#include "machine-id-setup.h" -#include "load-fragment.h" -#include "fdset.h" -#include "special.h" -#include "conf-parser.h" -#include "bus-errors.h" -#include "missing.h" -#include "label.h" -#include "build.h" -#include "strv.h" -#include "def.h" -#include "virt.h" -#include "watchdog.h" - -static enum { - ACTION_RUN, - ACTION_HELP, - ACTION_TEST, - ACTION_DUMP_CONFIGURATION_ITEMS, - ACTION_DONE -} arg_action = ACTION_RUN; - -static char *arg_default_unit = NULL; -static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID; - -static bool arg_dump_core = true; -static bool arg_crash_shell = false; -static int arg_crash_chvt = -1; -static bool arg_confirm_spawn = false; -static bool arg_show_status = true; -#ifdef HAVE_SYSV_COMPAT -static bool arg_sysv_console = true; -#endif -static bool arg_mount_auto = true; -static bool arg_swap_auto = true; -static char **arg_default_controllers = NULL; -static char ***arg_join_controllers = NULL; -static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL; -static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; -static usec_t arg_runtime_watchdog = 0; -static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE; - -static FILE* serialization = NULL; - -static void nop_handler(int sig) { -} - -_noreturn_ static void crash(int sig) { - - if (!arg_dump_core) - log_error("Caught <%s>, not dumping core.", signal_to_string(sig)); - else { - struct sigaction sa; - pid_t pid; - - /* We want to wait for the core process, hence let's enable SIGCHLD */ - zero(sa); - sa.sa_handler = nop_handler; - sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; - assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); - - if ((pid = fork()) < 0) - log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno)); - - else if (pid == 0) { - struct rlimit rl; - - /* Enable default signal handler for core dump */ - zero(sa); - sa.sa_handler = SIG_DFL; - assert_se(sigaction(sig, &sa, NULL) == 0); - - /* Don't limit the core dump size */ - zero(rl); - rl.rlim_cur = RLIM_INFINITY; - rl.rlim_max = RLIM_INFINITY; - setrlimit(RLIMIT_CORE, &rl); - - /* Just to be sure... */ - assert_se(chdir("/") == 0); - - /* Raise the signal again */ - raise(sig); - - assert_not_reached("We shouldn't be here..."); - _exit(1); - - } else { - siginfo_t status; - int r; - - /* Order things nicely. */ - if ((r = wait_for_terminate(pid, &status)) < 0) - log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r)); - else if (status.si_code != CLD_DUMPED) - log_error("Caught <%s>, core dump failed.", signal_to_string(sig)); - else - log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid); - } - } - - if (arg_crash_chvt) - chvt(arg_crash_chvt); - - if (arg_crash_shell) { - struct sigaction sa; - pid_t pid; - - log_info("Executing crash shell in 10s..."); - sleep(10); - - /* Let the kernel reap children for us */ - zero(sa); - sa.sa_handler = SIG_IGN; - sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART; - assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); - - if ((pid = fork()) < 0) - log_error("Failed to fork off crash shell: %s", strerror(errno)); - else if (pid == 0) { - int fd, r; - - if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0) - log_error("Failed to acquire terminal: %s", strerror(-fd)); - else if ((r = make_stdio(fd)) < 0) - log_error("Failed to duplicate terminal fd: %s", strerror(-r)); - - execl("/bin/sh", "/bin/sh", NULL); - - log_error("execl() failed: %s", strerror(errno)); - _exit(1); - } - - log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid); - } - - log_info("Freezing execution."); - freeze(); -} - -static void install_crash_handler(void) { - struct sigaction sa; - - zero(sa); - - sa.sa_handler = crash; - sa.sa_flags = SA_NODEFER; - - sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); -} - -static int console_setup(bool do_reset) { - int tty_fd, r; - - /* If we are init, we connect stdin/stdout/stderr to /dev/null - * and make sure we don't have a controlling tty. */ - - release_terminal(); - - if (!do_reset) - return 0; - - tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); - if (tty_fd < 0) { - log_error("Failed to open /dev/console: %s", strerror(-tty_fd)); - return -tty_fd; - } - - /* We don't want to force text mode. - * plymouth may be showing pictures already from initrd. */ - r = reset_terminal_fd(tty_fd, false); - if (r < 0) - log_error("Failed to reset /dev/console: %s", strerror(-r)); - - close_nointr_nofail(tty_fd); - return r; -} - -static int set_default_unit(const char *u) { - char *c; - - assert(u); - - if (!(c = strdup(u))) - return -ENOMEM; - - free(arg_default_unit); - arg_default_unit = c; - return 0; -} - -static int parse_proc_cmdline_word(const char *word) { - - static const char * const rlmap[] = { - "emergency", SPECIAL_EMERGENCY_TARGET, - "-b", SPECIAL_EMERGENCY_TARGET, - "single", SPECIAL_RESCUE_TARGET, - "-s", SPECIAL_RESCUE_TARGET, - "s", SPECIAL_RESCUE_TARGET, - "S", SPECIAL_RESCUE_TARGET, - "1", SPECIAL_RESCUE_TARGET, - "2", SPECIAL_RUNLEVEL2_TARGET, - "3", SPECIAL_RUNLEVEL3_TARGET, - "4", SPECIAL_RUNLEVEL4_TARGET, - "5", SPECIAL_RUNLEVEL5_TARGET, - }; - - assert(word); - - if (startswith(word, "systemd.unit=")) - return set_default_unit(word + 13); - - else if (startswith(word, "systemd.log_target=")) { - - if (log_set_target_from_string(word + 19) < 0) - log_warning("Failed to parse log target %s. Ignoring.", word + 19); - - } else if (startswith(word, "systemd.log_level=")) { - - if (log_set_max_level_from_string(word + 18) < 0) - log_warning("Failed to parse log level %s. Ignoring.", word + 18); - - } else if (startswith(word, "systemd.log_color=")) { - - if (log_show_color_from_string(word + 18) < 0) - log_warning("Failed to parse log color setting %s. Ignoring.", word + 18); - - } else if (startswith(word, "systemd.log_location=")) { - - if (log_show_location_from_string(word + 21) < 0) - log_warning("Failed to parse log location setting %s. Ignoring.", word + 21); - - } else if (startswith(word, "systemd.dump_core=")) { - int r; - - if ((r = parse_boolean(word + 18)) < 0) - log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18); - else - arg_dump_core = r; - - } else if (startswith(word, "systemd.crash_shell=")) { - int r; - - if ((r = parse_boolean(word + 20)) < 0) - log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20); - else - arg_crash_shell = r; - - } else if (startswith(word, "systemd.confirm_spawn=")) { - int r; - - if ((r = parse_boolean(word + 22)) < 0) - log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22); - else - arg_confirm_spawn = r; - - } else if (startswith(word, "systemd.crash_chvt=")) { - int k; - - if (safe_atoi(word + 19, &k) < 0) - log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19); - else - arg_crash_chvt = k; - - } else if (startswith(word, "systemd.show_status=")) { - int r; - - if ((r = parse_boolean(word + 20)) < 0) - log_warning("Failed to parse show status switch %s. Ignoring.", word + 20); - else - arg_show_status = r; - } else if (startswith(word, "systemd.default_standard_output=")) { - int r; - - if ((r = exec_output_from_string(word + 32)) < 0) - log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32); - else - arg_default_std_output = r; - } else if (startswith(word, "systemd.default_standard_error=")) { - int r; - - if ((r = exec_output_from_string(word + 31)) < 0) - log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31); - else - arg_default_std_error = r; - } else if (startswith(word, "systemd.setenv=")) { - char *cenv, *eq; - int r; - - cenv = strdup(word + 15); - if (!cenv) - return -ENOMEM; - - eq = strchr(cenv, '='); - if (!eq) { - r = unsetenv(cenv); - if (r < 0) - log_warning("unsetenv failed %s. Ignoring.", strerror(errno)); - } else { - *eq = 0; - r = setenv(cenv, eq + 1, 1); - if (r < 0) - log_warning("setenv failed %s. Ignoring.", strerror(errno)); - } - free(cenv); -#ifdef HAVE_SYSV_COMPAT - } else if (startswith(word, "systemd.sysv_console=")) { - int r; - - if ((r = parse_boolean(word + 21)) < 0) - log_warning("Failed to parse SysV console switch %s. Ignoring.", word + 20); - else - arg_sysv_console = r; -#endif - - } else if (startswith(word, "systemd.")) { - - log_warning("Unknown kernel switch %s. Ignoring.", word); - - log_info("Supported kernel switches:\n" - "systemd.unit=UNIT Default unit to start\n" - "systemd.dump_core=0|1 Dump core on crash\n" - "systemd.crash_shell=0|1 Run shell on crash\n" - "systemd.crash_chvt=N Change to VT #N on crash\n" - "systemd.confirm_spawn=0|1 Confirm every process spawn\n" - "systemd.show_status=0|1 Show status updates on the console during bootup\n" -#ifdef HAVE_SYSV_COMPAT - "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n" -#endif - "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n" - " Log target\n" - "systemd.log_level=LEVEL Log level\n" - "systemd.log_color=0|1 Highlight important log messages\n" - "systemd.log_location=0|1 Include code location in log messages\n" - "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" - " Set default log output for services\n" - "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" - " Set default log error output for services\n"); - - } else if (streq(word, "quiet")) { - arg_show_status = false; -#ifdef HAVE_SYSV_COMPAT - arg_sysv_console = false; -#endif - } else { - unsigned i; - - /* SysV compatibility */ - for (i = 0; i < ELEMENTSOF(rlmap); i += 2) - if (streq(word, rlmap[i])) - return set_default_unit(rlmap[i+1]); - } - - return 0; -} - -static int config_parse_level2( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - assert(filename); - assert(lvalue); - assert(rvalue); - - log_set_max_level_from_string(rvalue); - return 0; -} - -static int config_parse_target( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - assert(filename); - assert(lvalue); - assert(rvalue); - - log_set_target_from_string(rvalue); - return 0; -} - -static int config_parse_color( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - assert(filename); - assert(lvalue); - assert(rvalue); - - log_show_color_from_string(rvalue); - return 0; -} - -static int config_parse_location( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - assert(filename); - assert(lvalue); - assert(rvalue); - - log_show_location_from_string(rvalue); - return 0; -} - -static int config_parse_cpu_affinity2( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - char *w; - size_t l; - char *state; - cpu_set_t *c = NULL; - unsigned ncpus = 0; - - assert(filename); - assert(lvalue); - assert(rvalue); - - FOREACH_WORD_QUOTED(w, l, rvalue, state) { - char *t; - int r; - unsigned cpu; - - if (!(t = strndup(w, l))) - return -ENOMEM; - - r = safe_atou(t, &cpu); - free(t); - - if (!c) - if (!(c = cpu_set_malloc(&ncpus))) - return -ENOMEM; - - if (r < 0 || cpu >= ncpus) { - log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue); - CPU_FREE(c); - return -EBADMSG; - } - - CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c); - } - - if (c) { - if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0) - log_warning("Failed to set CPU affinity: %m"); - - CPU_FREE(c); - } - - return 0; -} - -static void strv_free_free(char ***l) { - char ***i; - - if (!l) - return; - - for (i = l; *i; i++) - strv_free(*i); - - free(l); -} - -static void free_join_controllers(void) { - if (!arg_join_controllers) - return; - - strv_free_free(arg_join_controllers); - arg_join_controllers = NULL; -} - -static int config_parse_join_controllers( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - unsigned n = 0; - char *state, *w; - size_t length; - - assert(filename); - assert(lvalue); - assert(rvalue); - - free_join_controllers(); - - FOREACH_WORD_QUOTED(w, length, rvalue, state) { - char *s, **l; - - s = strndup(w, length); - if (!s) - return -ENOMEM; - - 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 -ENOMEM; - } - - 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 -ENOMEM; - } - - 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 -ENOMEM; - } - - strv_free(l); - l = c; - } else { - char **c; - - c = strv_copy(*a); - if (!c) { - strv_free(l); - strv_free_free(t); - return -ENOMEM; - } - - 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 }, -#ifdef HAVE_SYSV_COMPAT - { "Manager", "SysVConsole", config_parse_bool, 0, &arg_sysv_console }, -#endif - { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt }, - { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL }, - { "Manager", "MountAuto", config_parse_bool, 0, &arg_mount_auto }, - { "Manager", "SwapAuto", config_parse_bool, 0, &arg_swap_auto }, - { "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers }, - { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output }, - { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error }, - { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers }, - { "Manager", "RuntimeWatchdogSec", config_parse_usec, 0, &arg_runtime_watchdog }, - { "Manager", "ShutdownWatchdogSec", config_parse_usec, 0, &arg_shutdown_watchdog }, - { NULL, NULL, NULL, 0, NULL } - }; - - FILE *f; - const char *fn; - int r; - - fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE; - f = fopen(fn, "re"); - if (!f) { - if (errno == ENOENT) - return 0; - - log_warning("Failed to open configuration file '%s': %m", fn); - return 0; - } - - r = config_parse(fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, NULL); - if (r < 0) - log_warning("Failed to parse configuration file: %s", strerror(-r)); - - fclose(f); - - return 0; -} - -static int parse_proc_cmdline(void) { - char *line, *w, *state; - int r; - size_t l; - - /* Don't read /proc/cmdline if we are in a container, since - * that is only relevant for the host system */ - if (detect_container(NULL) > 0) - return 0; - - if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) { - log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); - return 0; - } - - FOREACH_WORD_QUOTED(w, l, line, state) { - char *word; - - if (!(word = strndup(w, l))) { - r = -ENOMEM; - goto finish; - } - - r = parse_proc_cmdline_word(word); - free(word); - - if (r < 0) - goto finish; - } - - 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_DUMP_CONFIGURATION_ITEMS, - ARG_DUMP_CORE, - ARG_CRASH_SHELL, - ARG_CONFIRM_SPAWN, - ARG_SHOW_STATUS, - ARG_SYSV_CONSOLE, - ARG_DESERIALIZE, - 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' }, - { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS }, - { "dump-core", no_argument, NULL, ARG_DUMP_CORE }, - { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL }, - { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN }, - { "show-status", optional_argument, NULL, ARG_SHOW_STATUS }, -#ifdef HAVE_SYSV_COMPAT - { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE }, -#endif - { "deserialize", required_argument, NULL, ARG_DESERIALIZE }, - { "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 = MANAGER_SYSTEM; - break; - - case ARG_USER: - arg_running_as = MANAGER_USER; - break; - - case ARG_TEST: - arg_action = ACTION_TEST; - break; - - case ARG_DUMP_CONFIGURATION_ITEMS: - arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; - break; - - case ARG_DUMP_CORE: - arg_dump_core = true; - break; - - case ARG_CRASH_SHELL: - arg_crash_shell = true; - break; - - case ARG_CONFIRM_SPAWN: - arg_confirm_spawn = true; - break; - - case ARG_SHOW_STATUS: - - if (optarg) { - if ((r = parse_boolean(optarg)) < 0) { - log_error("Failed to show status boolean %s.", optarg); - return r; - } - arg_show_status = r; - } else - arg_show_status = true; - break; -#ifdef HAVE_SYSV_COMPAT - case ARG_SYSV_CONSOLE: - - if (optarg) { - if ((r = parse_boolean(optarg)) < 0) { - log_error("Failed to SysV console boolean %s.", optarg); - return r; - } - arg_sysv_console = r; - } else - arg_sysv_console = true; - break; -#endif - - case ARG_DESERIALIZE: { - int fd; - FILE *f; - - if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) { - log_error("Failed to parse deserialize option %s.", optarg); - return r; - } - - if (!(f = fdopen(fd, "r"))) { - log_error("Failed to open serialization fd: %m"); - return r; - } - - if (serialization) - fclose(serialization); - - serialization = f; - - break; - } - - case ARG_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 - "\n", stdout); - fputs(i[1], stdout); - fputs("\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) - 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 Dump core on crash\n" - " --crash-shell Run shell on crash\n" - " --confirm-spawn Ask for confirmation when spawning processes\n" - " --show-status[=0|1] Show status updates on the console during bootup\n" -#ifdef HAVE_SYSV_COMPAT - " --sysv-console[=0|1] Connect output of SysV scripts to console\n" -#endif - " --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 prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) { - 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 ++; - - if ((r = manager_open_serialization(m, &f)) < 0) { - log_error("Failed to create serialization file: %s", strerror(-r)); - goto fail; - } - - if (!(fds = fdset_new())) { - r = -ENOMEM; - log_error("Failed to allocate fd set: %s", strerror(-r)); - goto fail; - } - - if ((r = manager_serialize(m, f, fds)) < 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; - } - - if ((r = fd_cloexec(fileno(f), false)) < 0) { - log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r)); - goto fail; - } - - if ((r = fdset_cloexec(fds, false)) < 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 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); -} - -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 is_reexec = false; - int j; - bool loaded_policy = false; - bool arm_reboot_watchdog = false; - -#ifdef HAVE_SYSV_COMPAT - if (getpid() != 1 && strstr(program_invocation_short_name, "init")) { - /* This is compatibility support for SysV, where - * calling init as a user is identical to telinit. */ - - errno = -ENOENT; - execv(SYSTEMCTL_BINARY_PATH, argv); - log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); - return 1; - } -#endif - - /* Determine if this is a reexecution or normal bootup. We do - * the full command line parsing much later, so let's just - * have a quick peek here. */ - - for (j = 1; j < argc; j++) - if (streq(argv[j], "--deserialize")) { - is_reexec = true; - break; - } - - /* If we get started via the /sbin/init symlink then we are - called 'init'. After a subsequent reexecution we are then - called 'systemd'. That is confusing, hence let's call us - systemd right-away. */ - program_invocation_short_name = systemd; - prctl(PR_SET_NAME, systemd); - - saved_argv = argv; - saved_argc = argc; - - log_show_color(isatty(STDERR_FILENO) > 0); - log_show_location(false); - log_set_max_level(LOG_INFO); - - if (getpid() == 1) { - arg_running_as = MANAGER_SYSTEM; - log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_JOURNAL_OR_KMSG); - - if (!is_reexec) { - if (selinux_setup(&loaded_policy) < 0) - goto finish; - if (ima_setup() < 0) - goto finish; - } - - log_open(); - - if (label_init() < 0) - goto finish; - - if (!is_reexec) - if (hwclock_is_localtime() > 0) { - int min; - - r = hwclock_apply_localtime_delta(&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 { - arg_running_as = MANAGER_USER; - log_set_target(LOG_TARGET_AUTO); - log_open(); - } - - /* Initialize default unit */ - if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0) - goto finish; - - /* By default, mount "cpu" and "cpuacct" together */ - arg_join_controllers = new(char**, 2); - if (!arg_join_controllers) - goto finish; - - arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL); - arg_join_controllers[1] = NULL; - - if (!arg_join_controllers[0]) - goto finish; - - /* Mount /proc, /sys and friends, so that /proc/cmdline and - * /proc/$PID/fd is available. */ - if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) { - r = mount_setup(loaded_policy); - if (r < 0) - goto finish; - } - - /* Reset all signal handlers. */ - assert_se(reset_all_signal_handlers() == 0); - - /* If we are init, we can block sigkill. Yay. */ - ignore_signals(SIGNALS_IGNORE, -1); - - if (parse_config_file() < 0) - goto finish; - - if (arg_running_as == MANAGER_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 == MANAGER_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_DUMP_CONFIGURATION_ITEMS) { - unit_dump_config_items(stdout); - retval = EXIT_SUCCESS; - goto finish; - } else if (arg_action == ACTION_DONE) { - retval = EXIT_SUCCESS; - goto finish; - } - - assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST); - - /* Close logging fds, in order not to confuse fdset below */ - log_close(); - - /* Remember open file descriptors for later deserialization */ - if (serialization) { - r = fdset_new_fill(&fds); - if (r < 0) { - log_error("Failed to allocate fd set: %s", strerror(-r)); - goto finish; - } - - assert_se(fdset_remove(fds, fileno(serialization)) >= 0); - } else - close_all_fds(NULL, 0); - - /* Set up PATH unless it is already set */ - setenv("PATH", -#ifdef HAVE_SPLIT_USR - "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", -#else - "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin", -#endif - arg_running_as == MANAGER_SYSTEM); - - if (arg_running_as == MANAGER_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. */ - 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("_"); - - /* 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 == MANAGER_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 == MANAGER_SYSTEM && arg_action == ACTION_RUN) { - console_setup(getpid() == 1 && !is_reexec); - make_null_stdio(); - } - - /* Open the logging devices, if possible and necessary */ - log_open(); - - /* Make sure we leave a core dump without panicing the - * kernel. */ - if (getpid() == 1) - install_crash_handler(); - - if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) { - r = mount_cgroup_controllers(arg_join_controllers); - if (r < 0) - goto finish; - } - - log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG, - PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as)); - - if (arg_running_as == MANAGER_SYSTEM && !is_reexec) { - locale_setup(); - - if (arg_show_status || plymouth_running()) - status_welcome(); - - kmod_setup(); - hostname_setup(); - machine_id_setup(); - loopback_setup(); - - test_mtab(); - test_usr(); - test_cgroups(); - } - - if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0) - watchdog_set_timeout(&arg_runtime_watchdog); - - 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; -#ifdef HAVE_SYSV_COMPAT - m->sysv_console = arg_sysv_console; -#endif - m->mount_auto = arg_mount_auto; - m->swap_auto = arg_swap_auto; - 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; - - 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); - - 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)); - - if (fds) { - /* 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; - } else { - DBusError error; - Unit *target = NULL; - Job *default_unit_job; - - dbus_error_init(&error); - - log_debug("Activating default unit: %s", arg_default_unit); - - r = manager_load_unit(m, arg_default_unit, NULL, &error, &target); - if (r < 0) { - log_error("Failed to load default target: %s", bus_error(&error, r)); - dbus_error_free(&error); - } else if (target->load_state == UNIT_ERROR) - log_error("Failed to load default target: %s", strerror(-target->load_error)); - else if (target->load_state == UNIT_MASKED) - log_error("Default target masked."); - - if (!target || target->load_state != UNIT_LOADED) { - log_info("Trying to load rescue target..."); - - r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target); - if (r < 0) { - log_error("Failed to load rescue target: %s", bus_error(&error, r)); - dbus_error_free(&error); - goto finish; - } else if (target->load_state == UNIT_ERROR) { - log_error("Failed to load rescue target: %s", strerror(-target->load_error)); - goto finish; - } else if (target->load_state == UNIT_MASKED) { - log_error("Rescue target masked."); - goto finish; - } - } - - assert(target->load_state == UNIT_LOADED); - - if (arg_action == ACTION_TEST) { - printf("-> By units:\n"); - manager_dump_units(m, stdout, "\t"); - } - - r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job); - if (r < 0) { - log_error("Failed to start default target: %s", bus_error(&error, r)); - dbus_error_free(&error); - goto finish; - } - m->default_unit_job_id = default_unit_job->id; - - after_startup = now(CLOCK_MONOTONIC); - log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG, - "Loaded units and determined initial transaction in %s.", - format_timespan(timespan, sizeof(timespan), after_startup - before_startup)); - - if (arg_action == ACTION_TEST) { - printf("-> By jobs:\n"); - manager_dump_jobs(m, stdout, "\t"); - retval = EXIT_SUCCESS; - goto finish; - } - } - - for (;;) { - r = manager_loop(m); - if (r < 0) { - log_error("Failed to run mainloop: %s", strerror(-r)); - goto finish; - } - - switch (m->exit_code) { - - case MANAGER_EXIT: - retval = EXIT_SUCCESS; - log_debug("Exit."); - goto finish; - - case MANAGER_RELOAD: - log_info("Reloading."); - r = manager_reload(m); - if (r < 0) - log_error("Failed to reload: %s", strerror(-r)); - break; - - case MANAGER_REEXECUTE: - if (prepare_reexecute(m, &serialization, &fds) < 0) - goto finish; - - reexecute = true; - log_notice("Reexecuting."); - 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); - - free(arg_default_unit); - strv_free(arg_default_controllers); - free_join_controllers(); - - dbus_shutdown(); - - label_finish(); - - if (reexecute) { - const char *args[15]; - unsigned i = 0; - char sfd[16]; - - assert(serialization); - assert(fds); - - args[i++] = SYSTEMD_BINARY_PATH; - - args[i++] = "--log-level"; - args[i++] = log_level_to_string(log_get_max_level()); - - args[i++] = "--log-target"; - args[i++] = log_target_to_string(log_get_target()); - - if (arg_running_as == MANAGER_SYSTEM) - args[i++] = "--system"; - else - args[i++] = "--user"; - - if (arg_dump_core) - args[i++] = "--dump-core"; - - if (arg_crash_shell) - args[i++] = "--crash-shell"; - - if (arg_confirm_spawn) - args[i++] = "--confirm-spawn"; - - if (arg_show_status) - args[i++] = "--show-status=1"; - else - args[i++] = "--show-status=0"; - -#ifdef HAVE_SYSV_COMPAT - if (arg_sysv_console) - args[i++] = "--sysv-console=1"; - else - args[i++] = "--sysv-console=0"; -#endif - - snprintf(sfd, sizeof(sfd), "%i", fileno(serialization)); - char_array_0(sfd); - - args[i++] = "--deserialize"; - args[i++] = sfd; - - args[i++] = NULL; - - assert(i <= ELEMENTSOF(args)); - - /* 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); - - execv(args[0], (char* const*) args); - - log_error("Failed to reexecute: %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; -} -- cgit v1.2.3-54-g00ecf