X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Finitctl.c;h=15da4593d0a63648d70885b480085ce6d830e761;hp=407d32d93f17d2ff0cecd580a3060231a1d4c50c;hb=6f0d624ec785409ad82c2e3afb786d977f2b1c87;hpb=7c394faa38de389638e19b19212ed50aca870e3c diff --git a/src/initctl.c b/src/initctl.c index 407d32d93..15da4593d 100644 --- a/src/initctl.c +++ b/src/initctl.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. @@ -39,8 +39,9 @@ #include "log.h" #include "list.h" #include "initreq.h" -#include "manager.h" +#include "special.h" #include "sd-daemon.h" +#include "dbus-common.h" #define SERVER_FD_MAX 16 #define TIMEOUT ((int) (10*MSEC_PER_SEC)) @@ -67,27 +68,32 @@ struct Fifo { LIST_FIELDS(Fifo, fifo); }; -static const char *translate_runlevel(int runlevel) { +static const char *translate_runlevel(int runlevel, bool *isolate) { static const struct { const int runlevel; const char *special; + bool isolate; } table[] = { - { '0', SPECIAL_RUNLEVEL0_TARGET }, - { '1', SPECIAL_RUNLEVEL1_TARGET }, - { 's', SPECIAL_RUNLEVEL1_TARGET }, - { 'S', SPECIAL_RUNLEVEL1_TARGET }, - { '2', SPECIAL_RUNLEVEL2_TARGET }, - { '3', SPECIAL_RUNLEVEL3_TARGET }, - { '4', SPECIAL_RUNLEVEL4_TARGET }, - { '5', SPECIAL_RUNLEVEL5_TARGET }, - { '6', SPECIAL_RUNLEVEL6_TARGET }, + { '0', SPECIAL_POWEROFF_TARGET, false }, + { '1', SPECIAL_RESCUE_TARGET, true }, + { 's', SPECIAL_RESCUE_TARGET, true }, + { 'S', SPECIAL_RESCUE_TARGET, true }, + { '2', SPECIAL_RUNLEVEL2_TARGET, true }, + { '3', SPECIAL_RUNLEVEL3_TARGET, true }, + { '4', SPECIAL_RUNLEVEL4_TARGET, true }, + { '5', SPECIAL_RUNLEVEL5_TARGET, true }, + { '6', SPECIAL_REBOOT_TARGET, false }, }; unsigned i; + assert(isolate); + for (i = 0; i < ELEMENTSOF(table); i++) - if (table[i].runlevel == runlevel) + if (table[i].runlevel == runlevel) { + *isolate = table[i].isolate; return table[i].special; + } return NULL; } @@ -96,59 +102,40 @@ static void change_runlevel(Server *s, int runlevel) { const char *target; DBusMessage *m = NULL, *reply = NULL; DBusError error; - const char *path, *replace = "isolate"; + const char *mode; + bool isolate = false; assert(s); dbus_error_init(&error); - if (!(target = translate_runlevel(runlevel))) { + if (!(target = translate_runlevel(runlevel, &isolate))) { log_warning("Got request for unknown runlevel %c, ignoring.", runlevel); goto finish; } - log_debug("Running request %s", target); - - if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "LoadUnit"))) { - log_error("Could not allocate message."); - goto finish; - } - - if (!dbus_message_append_args(m, - DBUS_TYPE_STRING, &target, - DBUS_TYPE_INVALID)) { - log_error("Could not attach group information to signal message."); - goto finish; - } + if (isolate) + mode = "isolate"; + else + mode = "replace"; - if (!(reply = dbus_connection_send_with_reply_and_block(s->bus, m, -1, &error))) { - log_error("Failed to get unit path: %s", error.message); - goto finish; - } + log_debug("Running request %s/start/%s", target, mode); - if (!dbus_message_get_args(reply, &error, - DBUS_TYPE_OBJECT_PATH, &path, - DBUS_TYPE_INVALID)) { - log_error("Failed to parse unit path: %s", error.message); - goto finish; - } - - dbus_message_unref(m); - if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Unit", "Start"))) { + if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit"))) { log_error("Could not allocate message."); goto finish; } if (!dbus_message_append_args(m, - DBUS_TYPE_STRING, &replace, + DBUS_TYPE_STRING, &target, + DBUS_TYPE_STRING, &mode, DBUS_TYPE_INVALID)) { - log_error("Could not attach group information to signal message."); + log_error("Could not attach target and flag information to message."); goto finish; } - dbus_message_unref(reply); if (!(reply = dbus_connection_send_with_reply_and_block(s->bus, m, -1, &error))) { - log_error("Failed to start unit: %s", error.message); + log_error("Failed to start unit: %s", bus_error_message(&error)); goto finish; } @@ -255,8 +242,11 @@ static void server_done(Server *s) { if (s->epoll_fd >= 0) close_nointr_nofail(s->epoll_fd); - if (s->bus) + if (s->bus) { + dbus_connection_flush(s->bus); + dbus_connection_close(s->bus); dbus_connection_unref(s->bus); + } } static int server_init(Server *s, unsigned n_sockets) { @@ -313,14 +303,14 @@ static int server_init(Server *s, unsigned n_sockets) { goto fail; } - f->fd = SD_LISTEN_FDS_START+i; + f->fd = fd; LIST_PREPEND(Fifo, fifo, s->fifos, f); f->server = s; s->n_fifos ++; } - if (!(s->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) { - log_error("Failed to get D-Bus connection: %s", error.message); + if (bus_connect(DBUS_BUS_SYSTEM, &s->bus, NULL, &error) < 0) { + log_error("Failed to get D-Bus connection: %s", bus_error_message(&error)); goto fail; } @@ -357,25 +347,40 @@ static int process_event(Server *s, struct epoll_event *ev) { int main(int argc, char *argv[]) { Server server; - int r = 3, n; + int r = EXIT_FAILURE, n; + + if (getppid() != 1) { + log_error("This program should be invoked by init only."); + return EXIT_FAILURE; + } + + if (argc > 1) { + log_error("This program does not take arguments."); + return EXIT_FAILURE; + } log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); log_parse_environment(); - - log_info("systemd-initctl running as pid %llu", (unsigned long long) getpid()); + log_open(); if ((n = sd_listen_fds(true)) < 0) { log_error("Failed to read listening file descriptors from environment: %s", strerror(-r)); - return 1; + return EXIT_FAILURE; } if (n <= 0 || n > SERVER_FD_MAX) { log_error("No or too many file descriptors passed."); - return 2; + return EXIT_FAILURE; } if (server_init(&server, (unsigned) n) < 0) - return 2; + return EXIT_FAILURE; + + log_debug("systemd-initctl running as pid %lu", (unsigned long) getpid()); + + sd_notify(false, + "READY=1\n" + "STATUS=Processing requests..."); for (;;) { struct epoll_event event; @@ -395,15 +400,19 @@ int main(int argc, char *argv[]) { if (k <= 0) break; - if ((k = process_event(&server, &event)) < 0) + if (process_event(&server, &event) < 0) goto fail; } - r = 0; + + r = EXIT_SUCCESS; + + log_debug("systemd-initctl stopped as pid %lu", (unsigned long) getpid()); fail: - server_done(&server); + sd_notify(false, + "STATUS=Shutting down..."); - log_info("systemd-initctl stopped as pid %llu", (unsigned long long) getpid()); + server_done(&server); dbus_shutdown();