+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 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 <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "sd-daemon.h"
-#include "cgroup-util.h"
-#include "bus-util.h"
-#include "bus-error.h"
-#include "label.h"
-#include "machine-image.h"
-#include "machined.h"
-
-Manager *manager_new(void) {
- Manager *m;
- int r;
-
- m = new0(Manager, 1);
- if (!m)
- return NULL;
-
- m->machines = hashmap_new(&string_hash_ops);
- m->machine_units = hashmap_new(&string_hash_ops);
- m->machine_leaders = hashmap_new(NULL);
-
- if (!m->machines || !m->machine_units || !m->machine_leaders) {
- manager_free(m);
- return NULL;
- }
-
- r = sd_event_default(&m->event);
- if (r < 0) {
- manager_free(m);
- return NULL;
- }
-
- sd_event_set_watchdog(m->event, true);
-
- return m;
-}
-
-void manager_free(Manager *m) {
- Machine *machine;
- Image *i;
-
- assert(m);
-
- while ((machine = hashmap_first(m->machines)))
- machine_free(machine);
-
- hashmap_free(m->machines);
- hashmap_free(m->machine_units);
- hashmap_free(m->machine_leaders);
-
- while ((i = hashmap_steal_first(m->image_cache)))
- image_unref(i);
-
- hashmap_free(m->image_cache);
-
- sd_event_source_unref(m->image_cache_defer_event);
-
- bus_verify_polkit_async_registry_free(m->polkit_registry);
-
- sd_bus_unref(m->bus);
- sd_event_unref(m->event);
-
- free(m);
-}
-
-int manager_enumerate_machines(Manager *m) {
- _cleanup_closedir_ DIR *d = NULL;
- struct dirent *de;
- int r = 0;
-
- assert(m);
-
- /* Read in machine data stored on disk */
- d = opendir("/run/systemd/machines");
- if (!d) {
- if (errno == ENOENT)
- return 0;
-
- log_error_errno(errno, "Failed to open /run/systemd/machines: %m");
- return -errno;
- }
-
- FOREACH_DIRENT(de, d, return -errno) {
- struct Machine *machine;
- int k;
-
- if (!dirent_is_file(de))
- continue;
-
- /* Ignore symlinks that map the unit name to the machine */
- if (startswith(de->d_name, "unit:"))
- continue;
-
- k = manager_add_machine(m, de->d_name, &machine);
- if (k < 0) {
- log_error_errno(k, "Failed to add machine by file name %s: %m", de->d_name);
-
- r = k;
- continue;
- }
-
- machine_add_to_gc_queue(machine);
-
- k = machine_load(machine);
- if (k < 0)
- r = k;
- }
-
- return r;
-}
-
-static int manager_connect_bus(Manager *m) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- int r;
-
- assert(m);
- assert(!m->bus);
-
- r = sd_bus_default_system(&m->bus);
- if (r < 0)
- return log_error_errno(r, "Failed to connect to system bus: %m");
-
- r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/machine1", "org.freedesktop.machine1.Manager", manager_vtable, m);
- if (r < 0)
- return log_error_errno(r, "Failed to add manager object vtable: %m");
-
- r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/machine1/machine", "org.freedesktop.machine1.Machine", machine_vtable, machine_object_find, m);
- if (r < 0)
- return log_error_errno(r, "Failed to add machine object vtable: %m");
-
- r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/machine1/machine", machine_node_enumerator, m);
- if (r < 0)
- return log_error_errno(r, "Failed to add machine enumerator: %m");
-
- r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/machine1/image", "org.freedesktop.machine1.Image", image_vtable, image_object_find, m);
- if (r < 0)
- return log_error_errno(r, "Failed to add image object vtable: %m");
-
- r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/machine1/image", image_node_enumerator, m);
- if (r < 0)
- return log_error_errno(r, "Failed to add image enumerator: %m");
-
- r = sd_bus_add_match(m->bus,
- NULL,
- "type='signal',"
- "sender='org.freedesktop.systemd1',"
- "interface='org.freedesktop.systemd1.Manager',"
- "member='JobRemoved',"
- "path='/org/freedesktop/systemd1'",
- match_job_removed,
- m);
- if (r < 0)
- return log_error_errno(r, "Failed to add match for JobRemoved: %m");
-
- r = sd_bus_add_match(m->bus,
- NULL,
- "type='signal',"
- "sender='org.freedesktop.systemd1',"
- "interface='org.freedesktop.systemd1.Manager',"
- "member='UnitRemoved',"
- "path='/org/freedesktop/systemd1'",
- match_unit_removed,
- m);
- if (r < 0)
- return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
-
- r = sd_bus_add_match(m->bus,
- NULL,
- "type='signal',"
- "sender='org.freedesktop.systemd1',"
- "interface='org.freedesktop.DBus.Properties',"
- "member='PropertiesChanged'",
- match_properties_changed,
- m);
- if (r < 0)
- return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
-
- r = sd_bus_add_match(m->bus,
- NULL,
- "type='signal',"
- "sender='org.freedesktop.systemd1',"
- "interface='org.freedesktop.systemd1.Manager',"
- "member='Reloading',"
- "path='/org/freedesktop/systemd1'",
- match_reloading,
- m);
- if (r < 0)
- return log_error_errno(r, "Failed to add match for Reloading: %m");
-
- r = sd_bus_call_method(
- m->bus,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "Subscribe",
- &error,
- NULL, NULL);
- if (r < 0) {
- log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
- return r;
- }
-
- r = sd_bus_request_name(m->bus, "org.freedesktop.machine1", 0);
- if (r < 0)
- return log_error_errno(r, "Failed to register name: %m");
-
- r = sd_bus_attach_event(m->bus, m->event, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to attach bus to event loop: %m");
-
- return 0;
-}
-
-void manager_gc(Manager *m, bool drop_not_started) {
- Machine *machine;
-
- assert(m);
-
- while ((machine = m->machine_gc_queue)) {
- LIST_REMOVE(gc_queue, m->machine_gc_queue, machine);
- machine->in_gc_queue = false;
-
- if (!machine_check_gc(machine, drop_not_started)) {
- machine_stop(machine);
- machine_free(machine);
- }
- }
-}
-
-int manager_startup(Manager *m) {
- Machine *machine;
- Iterator i;
- int r;
-
- assert(m);
-
- /* Connect to the bus */
- r = manager_connect_bus(m);
- if (r < 0)
- return r;
-
- /* Deserialize state */
- manager_enumerate_machines(m);
-
- /* Remove stale objects before we start them */
- manager_gc(m, false);
-
- /* And start everything */
- HASHMAP_FOREACH(machine, m->machines, i)
- machine_start(machine, NULL, NULL);
-
- return 0;
-}
-
-static bool check_idle(void *userdata) {
- Manager *m = userdata;
-
- manager_gc(m, true);
-
- return hashmap_isempty(m->machines);
-}
-
-int manager_run(Manager *m) {
- assert(m);
-
- return bus_event_loop_with_idle(
- m->event,
- m->bus,
- "org.freedesktop.machine1",
- DEFAULT_EXIT_USEC,
- check_idle, m);
-}
-
-int main(int argc, char *argv[]) {
- Manager *m = NULL;
- int r;
-
- log_set_target(LOG_TARGET_AUTO);
- log_set_facility(LOG_AUTH);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- if (argc != 1) {
- log_error("This program takes no arguments.");
- r = -EINVAL;
- goto finish;
- }
-
- /* Always create the directories people can create inotify
- * watches in. Note that some applications might check for the
- * existence of /run/systemd/machines/ to determine whether
- * machined is available, so please always make sure this
- * check stays in. */
- mkdir_label("/run/systemd/machines", 0755);
-
- assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
-
- m = manager_new();
- if (!m) {
- r = log_oom();
- goto finish;
- }
-
- r = manager_startup(m);
- if (r < 0) {
- log_error_errno(r, "Failed to fully start up daemon: %m");
- goto finish;
- }
-
- log_debug("systemd-machined running as pid "PID_FMT, getpid());
-
- sd_notify(false,
- "READY=1\n"
- "STATUS=Processing requests...");
-
- r = manager_run(m);
-
- log_debug("systemd-machined stopped as pid "PID_FMT, getpid());
-
-finish:
- if (m)
- manager_free(m);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff