./tools/notsd-move

1 files changed, 415 insertions, 0 deletions

diff --git a/src/grp-machine/systemd-machined/machined.c b/src/grp-machine/systemd-machined/machined.c
new file mode 100644
index 0000000000..d6ce7e0c26
--- /dev/null
+++ b/src/grp-machine/systemd-machined/machined.c
@@ -0,0 +1,415 @@
+/***
+  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 <systemd/sd-daemon.h>
+
+#include "machine-core/machined.h"
+#include "sd-bus/bus-error.h"
+#include "sd-bus/bus-util.h"
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/cgroup-util.h"
+#include "systemd-basic/dirent-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/formats-util.h"
+#include "systemd-basic/hostname-util.h"
+#include "systemd-basic/label.h"
+#include "systemd-basic/signal-util.h"
+#include "systemd-shared/machine-image.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 (m->operations)
+                operation_free(m->operations);
+
+        assert(m->n_operations == 0);
+
+        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);
+}
+
+static int manager_add_host_machine(Manager *m) {
+        _cleanup_free_ char *rd = NULL, *unit = NULL;
+        sd_id128_t mid;
+        Machine *t;
+        int r;
+
+        if (m->host_machine)
+                return 0;
+
+        r = sd_id128_get_machine(&mid);
+        if (r < 0)
+                return log_error_errno(r, "Failed to get machine ID: %m");
+
+        rd = strdup("/");
+        if (!rd)
+                return log_oom();
+
+        unit = strdup("-.slice");
+        if (!unit)
+                return log_oom();
+
+        t = machine_new(m, MACHINE_HOST, ".host");
+        if (!t)
+                return log_oom();
+
+        t->leader = 1;
+        t->id = mid;
+
+        t->root_directory = rd;
+        t->unit = unit;
+        rd = unit = NULL;
+
+        dual_timestamp_from_boottime_or_monotonic(&t->timestamp, 0);
+
+        m->host_machine = t;
+
+        return 0;
+}
+
+int manager_enumerate_machines(Manager *m) {
+        _cleanup_closedir_ DIR *d = NULL;
+        struct dirent *de;
+        int r = 0;
+
+        assert(m);
+
+        r = manager_add_host_machine(m);
+        if (r < 0)
+                return r;
+
+        /* Read in machine data stored on disk */
+        d = opendir("/run/systemd/machines");
+        if (!d) {
+                if (errno == ENOENT)
+                        return 0;
+
+                return log_error_errno(errno, "Failed to open /run/systemd/machines: %m");
+        }
+
+        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;
+
+                if (!machine_name_is_valid(de->d_name))
+                        continue;
+
+                k = manager_add_machine(m, de->d_name, &machine);
+                if (k < 0) {
+                        r = log_error_errno(k, "Failed to add machine by file name %s: %m", de->d_name);
+                        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_(sd_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',"
+                             "arg0='org.freedesktop.systemd1.Unit'",
+                             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;
+
+                /* First, if we are not closing yet, initiate stopping */
+                if (!machine_check_gc(machine, drop_not_started) &&
+                    machine_get_state(machine) != MACHINE_CLOSING)
+                        machine_stop(machine);
+
+                /* Now, the stop probably made this referenced
+                 * again, but if it didn't, then it's time to let it
+                 * go entirely. */
+                if (!machine_check_gc(machine, drop_not_started)) {
+                        machine_finalize(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;
+
+        if (m->operations)
+                return false;
+
+        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, NULL, 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:
+        manager_free(m);
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}