X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fmain.c;h=0a99e5a91612d381c6fbd714d50e8376406f466c;hp=7e3374410c1e26e488896a5f149ff3743d14e37e;hb=ff4daf5a348278abed4dbf8afc3c4297b8cb9877;hpb=e015090f32dc35360637c5d8f2920654615b2439 diff --git a/src/main.c b/src/main.c index 7e3374410..0a99e5a91 100644 --- a/src/main.c +++ b/src/main.c @@ -1,4 +1,4 @@ -/*-*- Mode: C; c-basic-offset: 8 -*-*/ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. @@ -31,6 +31,7 @@ #include #include #include +#include #include "manager.h" #include "log.h" @@ -38,11 +39,19 @@ #include "hostname-setup.h" #include "loopback-setup.h" #include "kmod-setup.h" -#include "modprobe-setup.h" +#include "locale-setup.h" +#include "selinux-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" static enum { ACTION_RUN, @@ -59,23 +68,25 @@ 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_nomodules = 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 ExecOutput arg_default_std_output = EXEC_OUTPUT_INHERIT; +static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; static FILE* serialization = NULL; -_noreturn_ static void freeze(void) { - for (;;) - pause(); -} - static void nop_handler(int sig) { } _noreturn_ static void crash(int sig) { if (!arg_dump_core) - log_error("Caught <%s>, not dumping core.", strsignal(sig)); + log_error("Caught <%s>, not dumping core.", signal_to_string(sig)); else { struct sigaction sa; pid_t pid; @@ -87,7 +98,7 @@ _noreturn_ static void crash(int sig) { assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); if ((pid = fork()) < 0) - log_error("Caught <%s>, cannot fork for core dump: %s", strsignal(sig), strerror(errno)); + log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno)); else if (pid == 0) { struct rlimit rl; @@ -113,15 +124,16 @@ _noreturn_ static void crash(int sig) { _exit(1); } else { - int status, r; + siginfo_t status; + int r; /* Order things nicely. */ - if ((r = waitpid(pid, &status, 0)) < 0) - log_error("Caught <%s>, waitpid() failed: %s", strsignal(sig), strerror(errno)); - else if (!WCOREDUMP(status)) - log_error("Caught <%s>, core dump failed.", strsignal(sig)); + 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.", strsignal(sig), (unsigned long) pid); + log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid); } } @@ -157,7 +169,7 @@ _noreturn_ static void crash(int sig) { _exit(1); } - log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid); + log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid); } log_info("Freezing execution."); @@ -175,20 +187,6 @@ static void install_crash_handler(void) { sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); } -static int make_null_stdio(void) { - int null_fd, r; - - if ((null_fd = open("/dev/null", O_RDWR|O_NOCTTY)) < 0) { - log_error("Failed to open /dev/null: %m"); - return -errno; - } - - if ((r = make_stdio(null_fd)) < 0) - log_warning("Failed to dup2() device: %s", strerror(-r)); - - return r; -} - static int console_setup(bool do_reset) { int tty_fd, r; @@ -205,7 +203,7 @@ static int console_setup(bool do_reset) { return -tty_fd; } - if ((r = reset_terminal(tty_fd)) < 0) + if ((r = reset_terminal_fd(tty_fd)) < 0) log_error("Failed to reset /dev/console: %s", strerror(-r)); close_nointr_nofail(tty_fd); @@ -228,17 +226,20 @@ static int set_default_unit(const char *u) { static int parse_proc_cmdline_word(const char *word) { static const char * const rlmap[] = { - "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 + "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, }; - bool ignore_quiet = false; + + assert(word); if (startswith(word, "systemd.unit=")) return set_default_unit(word + 13); @@ -300,10 +301,31 @@ static int parse_proc_cmdline_word(const char *word) { if ((r = parse_boolean(word + 20)) < 0) log_warning("Failed to parse show status switch %s, Ignoring.", word + 20); - else { + else arg_show_status = r; - ignore_quiet = true; - } + } 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; +#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.")) { @@ -311,22 +333,29 @@ static int parse_proc_cmdline_word(const char *word) { log_info("Supported kernel switches:\n" "systemd.unit=UNIT Default unit to start\n" - "systemd.log_target=console|kmsg|syslog| Log target\n" - " syslog-org-kmsg|null\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.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"); - - } else if (streq(word, "nomodules")) - arg_nomodules = true; - else if (streq(word, "quiet")) { - if (!ignore_quiet) - arg_show_status = false; + "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|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\n" + " Set default log output for services\n" + "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+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; @@ -344,6 +373,7 @@ static int config_parse_level( unsigned line, const char *section, const char *lvalue, + int ltype, const char *rvalue, void *data, void *userdata) { @@ -361,6 +391,7 @@ static int config_parse_target( unsigned line, const char *section, const char *lvalue, + int ltype, const char *rvalue, void *data, void *userdata) { @@ -378,6 +409,7 @@ static int config_parse_color( unsigned line, const char *section, const char *lvalue, + int ltype, const char *rvalue, void *data, void *userdata) { @@ -395,6 +427,7 @@ static int config_parse_location( unsigned line, const char *section, const char *lvalue, + int ltype, const char *rvalue, void *data, void *userdata) { @@ -412,6 +445,7 @@ static int config_parse_cpu_affinity( unsigned line, const char *section, const char *lvalue, + int ltype, const char *rvalue, void *data, void *userdata) { @@ -426,7 +460,7 @@ static int config_parse_cpu_affinity( assert(lvalue); assert(rvalue); - FOREACH_WORD(w, l, rvalue, state) { + FOREACH_WORD_QUOTED(w, l, rvalue, state) { char *t; int r; unsigned cpu; @@ -460,19 +494,29 @@ static int config_parse_cpu_affinity( return 0; } +static DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier"); + static int parse_config_file(void) { const ConfigItem items[] = { - { "LogLevel", config_parse_level, NULL, "Manager" }, - { "LogTarget", config_parse_target, NULL, "Manager" }, - { "LogColor", config_parse_color, NULL, "Manager" }, - { "LogLocation", config_parse_location, NULL, "Manager" }, - { "DumpCore", config_parse_bool, &arg_dump_core, "Manager" }, - { "CrashShell", config_parse_bool, &arg_crash_shell, "Manager" }, - { "ShowStatus", config_parse_bool, &arg_show_status, "Manager" }, - { "CrashChVT", config_parse_int, &arg_crash_chvt, "Manager" }, - { "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" }, - { NULL, NULL, NULL, NULL } + { "LogLevel", config_parse_level, 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" }, +#ifdef HAVE_SYSV_COMPAT + { "SysVConsole", config_parse_bool, 0, &arg_sysv_console, "Manager" }, +#endif + { "CrashChVT", config_parse_int, 0, &arg_crash_chvt, "Manager" }, + { "CPUAffinity", config_parse_cpu_affinity, 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" }, + { NULL, NULL, 0, NULL, NULL } }; static const char * const sections[] = { @@ -484,7 +528,7 @@ static int parse_config_file(void) { const char *fn; int r; - fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : SESSION_CONFIG_FILE; + fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE; if (!(f = fopen(fn, "re"))) { if (errno == ENOENT) @@ -503,14 +547,17 @@ static int parse_config_file(void) { } static int parse_proc_cmdline(void) { - char *line; + char *line, *w, *state; int r; - char *w; size_t l; - char *state; + + /* 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(errno)); + log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); return 0; } @@ -544,15 +591,19 @@ static int parse_argv(int argc, char *argv[]) { ARG_LOG_COLOR, ARG_LOG_LOCATION, ARG_UNIT, - ARG_RUNNING_AS, + 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_INTROSPECT, + ARG_DEFAULT_STD_OUTPUT, + ARG_DEFAULT_STD_ERROR }; static const struct option options[] = { @@ -561,16 +612,22 @@ static int parse_argv(int argc, char *argv[]) { { "log-color", optional_argument, NULL, ARG_LOG_COLOR }, { "log-location", optional_argument, NULL, ARG_LOG_LOCATION }, { "unit", required_argument, NULL, ARG_UNIT }, - { "running-as", required_argument, NULL, ARG_RUNNING_AS }, + { "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", no_argument, NULL, ARG_SHOW_STATUS }, + { "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 } }; @@ -579,7 +636,10 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 1); assert(argv); - while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) + if (getpid() == 1) + opterr = 0; + + while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0) switch (c) { @@ -624,6 +684,24 @@ static int parse_argv(int argc, char *argv[]) { 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) { @@ -633,17 +711,13 @@ static int parse_argv(int argc, char *argv[]) { break; - case ARG_RUNNING_AS: { - ManagerRunningAs as; - - if ((as = manager_running_as_from_string(optarg)) < 0) { - log_error("Failed to parse running as value %s", optarg); - return -EINVAL; - } + case ARG_SYSTEM: + arg_running_as = MANAGER_SYSTEM; + break; - arg_running_as = as; + case ARG_USER: + arg_running_as = MANAGER_USER; break; - } case ARG_TEST: arg_action = ACTION_TEST; @@ -666,8 +740,29 @@ static int parse_argv(int argc, char *argv[]) { break; case ARG_SHOW_STATUS: - arg_show_status = true; + + 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; @@ -716,44 +811,79 @@ static int parse_argv(int argc, char *argv[]) { arg_action = ACTION_HELP; break; - case '?': - return -EINVAL; + 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: - log_error("Unknown option code %c", c); - return -EINVAL; + if (getpid() != 1) { + log_error("Unknown option code %c", c); + return -EINVAL; + } + + break; } - /* PID 1 will get the kernel arguments as parameters, which we - * ignore and unconditionally read from - * /proc/cmdline. However, we need to ignore those arguments - * here. */ - if (arg_running_as != MANAGER_SYSTEM && optind < argc) { + 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 a session.\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" - " --running-as=AS Set running as (system, session)\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 Show status updates on the console during bootup\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, syslog, 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", + " --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; @@ -768,8 +898,11 @@ static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) { assert(_f); assert(_fds); - if ((r = manager_open_serialization(&f)) < 0) { - log_error("Failed to create serialization faile: %s", strerror(-r)); + /* 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; } @@ -813,16 +946,81 @@ fail: return r; } +static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) { + const char *e; + unsigned long long a, b; + + assert(t); + + if (!(e = getenv("RD_TIMESTAMP"))) + 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." ); + + sleep(10); +} + int main(int argc, char *argv[]) { Manager *m = NULL; - Unit *target = NULL; - Job *job = NULL; - int r, retval = 1; + int r, retval = EXIT_FAILURE; FDSet *fds = NULL; bool reexecute = false; + const char *shutdown_verb = NULL; + dual_timestamp initrd_timestamp = { 0ULL, 0ULL }; + char systemd[] = "systemd"; if (getpid() != 1 && strstr(program_invocation_short_name, "init")) { - /* This is compatbility support for SysV, where + /* This is compatibility support for SysV, where * calling init as a user is identical to telinit. */ errno = -ENOENT; @@ -831,16 +1029,44 @@ int main(int argc, char *argv[]) { return 1; } - log_show_color(true); + /* 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(LOG_TARGET_SYSLOG_OR_KMSG); + log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_SYSLOG_OR_KMSG); + + /* This might actually not return, but cause a + * reexecution */ + if (selinux_setup(argv) < 0) + goto finish; + + if (label_init() < 0) + goto finish; + + if (hwclock_is_localtime() > 0) { + int err, min; + + err = hwclock_apply_localtime_delta(&min); + if (err < 0) + log_error("Failed to apply local time delta: %s", strerror(-err)); + else + log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); + } } else { - arg_running_as = MANAGER_SESSION; - log_set_target(LOG_TARGET_CONSOLE); + arg_running_as = MANAGER_USER; + log_set_target(LOG_TARGET_AUTO); } if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0) @@ -848,7 +1074,7 @@ int main(int argc, char *argv[]) { /* Mount /proc, /sys and friends, so that /proc/cmdline and * /proc/$PID/fd is available. */ - if (geteuid() == 0) + if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) if (mount_setup() < 0) goto finish; @@ -870,15 +1096,27 @@ int main(int argc, char *argv[]) { 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 = 0; + retval = EXIT_SUCCESS; goto finish; } else if (arg_action == ACTION_DONE) { - retval = 0; + retval = EXIT_SUCCESS; goto finish; } @@ -900,6 +1138,20 @@ int main(int argc, char *argv[]) { "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", arg_running_as == MANAGER_SYSTEM); + if (arg_running_as == MANAGER_SYSTEM) { + /* Parse the data passed to us by the initrd and unset it */ + parse_initrd_timestamp(&initrd_timestamp); + filter_environ("RD_"); + + /* Unset some environment variables passed in from the + * kernel that don't really make sense for us. */ + unsetenv("HOME"); + unsetenv("TERM"); + + /* 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); @@ -929,15 +1181,23 @@ int main(int argc, char *argv[]) { if (getpid() == 1) install_crash_handler(); - log_debug(PACKAGE_STRING " running in %s mode.", manager_running_as_to_string(arg_running_as)); + 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 && !serialization) { - if (arg_show_status) + locale_setup(); + + if (arg_show_status || plymouth_running()) status_welcome(); - modprobe_setup(arg_nomodules); + kmod_setup(); hostname_setup(); + machine_id_setup(); loopback_setup(); + + test_mtab(); + test_usr(); + test_cgroups(); } if ((r = manager_new(arg_running_as, &m)) < 0) { @@ -947,6 +1207,19 @@ int main(int argc, char *argv[]) { m->confirm_spawn = arg_confirm_spawn; m->show_status = arg_show_status; +#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; + + if (dual_timestamp_is_set(&initrd_timestamp)) + m->initrd_timestamp = initrd_timestamp; + + if (arg_default_controllers) + manager_set_default_controllers(m, arg_default_controllers); if ((r = manager_startup(m, serialization, fds)) < 0) log_error("Failed to fully start up daemon: %s", strerror(-r)); @@ -963,32 +1236,54 @@ int main(int argc, char *argv[]) { fclose(serialization); serialization = NULL; } else { + DBusError error; + Unit *target = NULL; + + dbus_error_init(&error); + log_debug("Activating default unit: %s", arg_default_unit); - if ((r = manager_load_unit(m, arg_default_unit, NULL, &target)) < 0) { - log_error("Failed to load default target: %s", strerror(-r)); + if ((r = manager_load_unit(m, arg_default_unit, NULL, &error, &target)) < 0) { + log_error("Failed to load default target: %s", bus_error(&error, r)); + dbus_error_free(&error); + } else if (target->meta.load_state == UNIT_ERROR) + log_error("Failed to load default target: %s", strerror(-target->meta.load_error)); + else if (target->meta.load_state == UNIT_MASKED) + log_error("Default target masked."); + if (!target || target->meta.load_state != UNIT_LOADED) { log_info("Trying to load rescue target..."); - if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &target)) < 0) { - log_error("Failed to load rescue target: %s", strerror(-r)); + + if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target)) < 0) { + log_error("Failed to load rescue target: %s", bus_error(&error, r)); + dbus_error_free(&error); + goto finish; + } else if (target->meta.load_state == UNIT_ERROR) { + log_error("Failed to load rescue target: %s", strerror(-target->meta.load_error)); + goto finish; + } else if (target->meta.load_state == UNIT_MASKED) { + log_error("Rescue target masked."); goto finish; } } + assert(target->meta.load_state == UNIT_LOADED); + if (arg_action == ACTION_TEST) { printf("-> By units:\n"); manager_dump_units(m, stdout, "\t"); } - if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &job)) < 0) { - log_error("Failed to start default target: %s", strerror(-r)); + if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, NULL)) < 0) { + log_error("Failed to start default target: %s", bus_error(&error, r)); + dbus_error_free(&error); goto finish; } if (arg_action == ACTION_TEST) { printf("-> By jobs:\n"); manager_dump_jobs(m, stdout, "\t"); - retval = 0; + retval = EXIT_SUCCESS; goto finish; } } @@ -1002,7 +1297,7 @@ int main(int argc, char *argv[]) { switch (m->exit_code) { case MANAGER_EXIT: - retval = 0; + retval = EXIT_SUCCESS; log_debug("Exit."); goto finish; @@ -1020,6 +1315,23 @@ int main(int argc, char *argv[]) { 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]); + + log_notice("Shutting down."); + goto finish; + } + default: assert_not_reached("Unknown exit code."); } @@ -1030,11 +1342,14 @@ finish: manager_free(m); free(arg_default_unit); + strv_free(arg_default_controllers); dbus_shutdown(); + label_finish(); + if (reexecute) { - const char *args[11]; + const char *args[15]; unsigned i = 0; char sfd[16]; @@ -1049,8 +1364,31 @@ finish: args[i++] = "--log-target"; args[i++] = log_target_to_string(log_get_target()); - args[i++] = "--running-as"; - args[i++] = manager_running_as_to_string(arg_running_as); + 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); @@ -1058,9 +1396,6 @@ finish: args[i++] = "--deserialize"; args[i++] = sfd; - if (arg_confirm_spawn) - args[i++] = "--confirm-spawn"; - args[i++] = NULL; assert(i <= ELEMENTSOF(args)); @@ -1076,6 +1411,17 @@ finish: if (fds) fdset_free(fds); + if (shutdown_verb) { + const char * command_line[] = { + SYSTEMD_SHUTDOWN_BINARY_PATH, + shutdown_verb, + NULL + }; + + execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line); + log_error("Failed to execute shutdown binary, freezing: %m"); + } + if (getpid() == 1) freeze();