/*
- * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2008-2010 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
-/** The state of snapshot creation. */
-enum {
- /** We are ready to take the next snapshot. */
- SCS_READY,
- /** The pre-creation hook has been started. */
- SCS_PRE_HOOK_RUNNING,
- /** The pre-creation hook exited successfully. */
- SCS_PRE_HOOK_SUCCESS,
- /** The rsync process is running. */
- SCS_RSYNC_RUNNING,
- /** The rsync process exited successfully. */
- SCS_RSYNC_SUCCESS,
- /** The rsync process needs to be restarted. */
- SCS_RSYNC_NEEDS_RESTART,
- /** The post-create hook has been started. */
- SCS_POST_HOOK_RUNNING,
-};
+
+/** The possible states for snapshot creation/removal. */
+#define HOOK_STATUS_ARRAY \
+ HSA_ITEM(HS_READY, "ready for action"), \
+ HSA_ITEM(HS_PRE_RUNNING, "pre-hook running"), \
+ HSA_ITEM(HS_PRE_SUCCESS, "pre-hook completed successfully"), \
+ HSA_ITEM(HS_RUNNING, "in progress"), \
+ HSA_ITEM(HS_SUCCESS, "process terminated successfully"), \
+ HSA_ITEM(HS_NEEDS_RESTART, "restart needed"), \
+ HSA_ITEM(HS_POST_RUNNING, "post-hook running")
+
+
+#define HSA_ITEM(x, y) x
+enum hook_status {HOOK_STATUS_ARRAY};
+#undef HSA_ITEM
+#define HSA_ITEM(x, y) y
+
/**
* The status of a snapshot.
*
* The snapshot directories come in four different flavours, depending
- * on how the two staus flags are set. Examples:
+ * on how the two status flags are set. Examples:
*
* Complete, not being deleted: 1204565370-1204565371.Sun_Mar_02_2008_14_33-Sun_Mar_02_2008_14_43.
* Complete, being deleted: 1204565370-1204565371.being_deleted.
/** The rsync process terminated successfully. */
SS_COMPLETE = 1,
/** The rm process is running to remove this snapshot. */
- SS_BEING_DELETED = 2,
+ SS_BEING_DELETED = 2
};
/** Describes one snapshot. */
int64_t creation_time;
/**
* Seconds after the epoch when creation of this snapshot completed.
- * Only meaningful if the SS_COMPLTE bit is set.
+ * Only meaningful if the SS_COMPLETE bit is set.
*/
int64_t completion_time;
/** See \ref snapshot_status_flags. */
__malloc char *being_deleted_name(struct snapshot *s);
int complete_name(int64_t start, int64_t end, char **result);
__malloc char *name_of_newest_complete_snapshot(struct snapshot_list *sl);
+int num_complete_snapshots(struct snapshot_list *sl);
/**
- * Get the oldest snapshot in a snapshot list.
+ * Get the newest snapshot in a snapshot list.
*/
-_static_inline_ struct snapshot *get_oldest_snapshot(struct snapshot_list *sl)
+_static_inline_ struct snapshot *get_newest_snapshot(struct snapshot_list *sl)
{
if (!sl->num_snapshots)
return NULL;
- return sl->snapshots[0];
+ return sl->snapshots[sl->num_snapshots - 1];
}