X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fsnapshot.c;fp=src%2Fcore%2Fsnapshot.c;h=0000000000000000000000000000000000000000;hb=9ad77dd132a43bcb42ec391d0f7acee8935bde6c;hp=b1d8448771d9fe6ef290448bc44ef4fb3456f28d;hpb=f48dd74a8d39b6074f820f904953f5cece03b9b0;p=elogind.git
diff --git a/src/core/snapshot.c b/src/core/snapshot.c
deleted file mode 100644
index b1d844877..000000000
--- a/src/core/snapshot.c
+++ /dev/null
@@ -1,312 +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 "unit.h"
-#include "snapshot.h"
-#include "unit-name.h"
-#include "dbus-snapshot.h"
-#include "bus-common-errors.h"
-
-static const UnitActiveState state_translation_table[_SNAPSHOT_STATE_MAX] = {
- [SNAPSHOT_DEAD] = UNIT_INACTIVE,
- [SNAPSHOT_ACTIVE] = UNIT_ACTIVE
-};
-
-static void snapshot_init(Unit *u) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(s);
- assert(UNIT(s)->load_state == UNIT_STUB);
-
- UNIT(s)->ignore_on_isolate = true;
- UNIT(s)->ignore_on_snapshot = true;
- UNIT(s)->allow_isolate = true;
-}
-
-static void snapshot_set_state(Snapshot *s, SnapshotState state) {
- SnapshotState old_state;
- assert(s);
-
- old_state = s->state;
- s->state = state;
-
- if (state != old_state)
- log_unit_debug(UNIT(s)->id,
- "%s changed %s -> %s",
- UNIT(s)->id,
- snapshot_state_to_string(old_state),
- snapshot_state_to_string(state));
-
- unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
-}
-
-static int snapshot_load(Unit *u) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(u);
- assert(u->load_state == UNIT_STUB);
-
- /* Make sure that only snapshots created via snapshot_create()
- * can be loaded */
- if (!u->transient && UNIT(s)->manager->n_reloading <= 0)
- return -ENOENT;
-
- u->load_state = UNIT_LOADED;
- return 0;
-}
-
-static int snapshot_coldplug(Unit *u, Hashmap *deferred_work) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(s);
- assert(s->state == SNAPSHOT_DEAD);
-
- if (s->deserialized_state != s->state)
- snapshot_set_state(s, s->deserialized_state);
-
- return 0;
-}
-
-static void snapshot_dump(Unit *u, FILE *f, const char *prefix) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(s);
- assert(f);
-
- fprintf(f,
- "%sSnapshot State: %s\n"
- "%sClean Up: %s\n",
- prefix, snapshot_state_to_string(s->state),
- prefix, yes_no(s->cleanup));
-}
-
-static int snapshot_start(Unit *u) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(s);
- assert(s->state == SNAPSHOT_DEAD);
-
- snapshot_set_state(s, SNAPSHOT_ACTIVE);
-
- if (s->cleanup)
- unit_add_to_cleanup_queue(u);
-
- return 1;
-}
-
-static int snapshot_stop(Unit *u) {
- Snapshot *s = SNAPSHOT(u);
-
- assert(s);
- assert(s->state == SNAPSHOT_ACTIVE);
-
- snapshot_set_state(s, SNAPSHOT_DEAD);
- return 1;
-}
-
-static int snapshot_serialize(Unit *u, FILE *f, FDSet *fds) {
- Snapshot *s = SNAPSHOT(u);
- Unit *other;
- Iterator i;
-
- assert(s);
- assert(f);
- assert(fds);
-
- unit_serialize_item(u, f, "state", snapshot_state_to_string(s->state));
- unit_serialize_item(u, f, "cleanup", yes_no(s->cleanup));
- SET_FOREACH(other, u->dependencies[UNIT_WANTS], i)
- unit_serialize_item(u, f, "wants", other->id);
-
- return 0;
-}
-
-static int snapshot_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
- Snapshot *s = SNAPSHOT(u);
- int r;
-
- assert(u);
- assert(key);
- assert(value);
- assert(fds);
-
- if (streq(key, "state")) {
- SnapshotState state;
-
- state = snapshot_state_from_string(value);
- if (state < 0)
- log_unit_debug(u->id, "Failed to parse state value %s", value);
- else
- s->deserialized_state = state;
-
- } else if (streq(key, "cleanup")) {
-
- r = parse_boolean(value);
- if (r < 0)
- log_unit_debug(u->id, "Failed to parse cleanup value %s", value);
- else
- s->cleanup = r;
-
- } else if (streq(key, "wants")) {
-
- r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, value, NULL, true);
- if (r < 0)
- return r;
- } else
- log_unit_debug(u->id, "Unknown serialization key '%s'", key);
-
- return 0;
-}
-
-_pure_ static UnitActiveState snapshot_active_state(Unit *u) {
- assert(u);
-
- return state_translation_table[SNAPSHOT(u)->state];
-}
-
-_pure_ static const char *snapshot_sub_state_to_string(Unit *u) {
- assert(u);
-
- return snapshot_state_to_string(SNAPSHOT(u)->state);
-}
-
-int snapshot_create(Manager *m, const char *name, bool cleanup, sd_bus_error *e, Snapshot **_s) {
- _cleanup_free_ char *n = NULL;
- Unit *other, *u = NULL;
- Iterator i;
- int r;
- const char *k;
-
- assert(m);
- assert(_s);
-
- if (name) {
- if (!unit_name_is_valid(name, TEMPLATE_INVALID))
- return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
-
- if (unit_name_to_type(name) != UNIT_SNAPSHOT)
- return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s lacks snapshot suffix.", name);
-
- if (manager_get_unit(m, name))
- return sd_bus_error_setf(e, BUS_ERROR_UNIT_EXISTS, "Snapshot %s exists already.", name);
-
- } else {
-
- for (;;) {
- if (asprintf(&n, "snapshot-%u.snapshot", ++ m->n_snapshots) < 0)
- return -ENOMEM;
-
- if (!manager_get_unit(m, n)) {
- name = n;
- break;
- }
-
- free(n);
- n = NULL;
- }
- }
-
- r = manager_load_unit_prepare(m, name, NULL, e, &u);
- if (r < 0)
- goto fail;
-
- u->transient = true;
- manager_dispatch_load_queue(m);
- assert(u->load_state == UNIT_LOADED);
-
- HASHMAP_FOREACH_KEY(other, k, m->units, i) {
-
- if (other->ignore_on_snapshot ||
- other->transient)
- continue;
-
- if (k != other->id)
- continue;
-
- if (UNIT_VTABLE(other)->check_snapshot)
- if (!UNIT_VTABLE(other)->check_snapshot(other))
- continue;
-
- if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
- continue;
-
- r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, other, true);
- if (r < 0)
- goto fail;
- }
-
- SNAPSHOT(u)->cleanup = cleanup;
- *_s = SNAPSHOT(u);
-
- log_unit_info(u->id, "Created snapshot %s.", u->id);
-
- return 0;
-
-fail:
- if (u)
- unit_add_to_cleanup_queue(u);
-
- return r;
-}
-
-void snapshot_remove(Snapshot *s) {
- assert(s);
-
- log_unit_info(UNIT(s)->id, "Removing snapshot %s.", UNIT(s)->id);
-
- unit_add_to_cleanup_queue(UNIT(s));
-}
-
-static const char* const snapshot_state_table[_SNAPSHOT_STATE_MAX] = {
- [SNAPSHOT_DEAD] = "dead",
- [SNAPSHOT_ACTIVE] = "active"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(snapshot_state, SnapshotState);
-
-const UnitVTable snapshot_vtable = {
- .object_size = sizeof(Snapshot),
-
- .no_alias = true,
- .no_instances = true,
- .no_gc = true,
-
- .init = snapshot_init,
- .load = snapshot_load,
-
- .coldplug = snapshot_coldplug,
-
- .dump = snapshot_dump,
-
- .start = snapshot_start,
- .stop = snapshot_stop,
-
- .serialize = snapshot_serialize,
- .deserialize_item = snapshot_deserialize_item,
-
- .active_state = snapshot_active_state,
- .sub_state_to_string = snapshot_sub_state_to_string,
-
- .bus_interface = "org.freedesktop.systemd1.Snapshot",
- .bus_vtable = bus_snapshot_vtable
-};