Replace all of the "char[37]" uses with obd_uuid_t.

[fs/lustre-release.git] / lustre / include / linux / obd_snap.h

diff --git a/lustre/include/linux/obd_snap.h b/lustre/include/linux/obd_snap.h
index e2b79d2..b7641d4 100644 (file)
--- a/lustre/include/linux/obd_snap.h
+++ b/lustre/include/linux/obd_snap.h
@@ -1,16 +1,19 @@
 #ifndef _OBD_SNAP
 #define _OBD_SNAP
+/*
+ * Copyright (C) 2001  Cluster File Systems, Inc.
+ *
+ * This code is issued under the GNU General Public License.
+ * See the file COPYING in this distribution
+ */
 
-#define OBD_SNAP_MAGIC 0xfffffff3   /* an unlikely block number */
-
-/* maximum number of snapshot tables we maintain in the kernel */
-#define SNAP_MAX_TABLES 8
-
+#include <linux/obd_class.h>
 
-/* maximum number of snapshots per device 
-   must fit in "u" area of struct inode */
-#define SNAP_MAX  (EXT2_N_BLOCKS-1)
+#define OBD_SNAP_MAGIC 0xfffffff3   /* an unlikely block number */
 
+#ifndef OBD_SNAP_DEVICENAME
+#define OBD_SNAP_DEVICENAME "obdsnap"
+#endif
 
 /* ioctls for manipulating snapshots 40 - 60 */
 #define OBD_SNAP_SETTABLE      _IOWR('f', 40, long)
@@ -18,57 +21,6 @@
 #define OBD_SNAP_DELETE        _IOWR('f', 42, long)
 #define OBD_SNAP_RESTORE       _IOWR('f', 43, long)
 
-
-
-/* if time is 0 this designates the "current" snapshot, i.e.
-   the head of the tree 
-*/
-struct snap {
-       time_t time;
-       int index;
-};
-
-/* snap ioctl data for attach: current always in first slot of this array */
-struct snap_obd_data {
-       int          snap_dev;  /* which device contains the data */
-       unsigned int snap_index;/* which snapshot is ours */
-       unsigned int snap_table;/* which table do we use */
-};
-
-
-/* snap ioctl data for table fiddling */
-struct snap_table_data {
-       int             tblcmd_no;      /* which table */
-       unsigned int    tblcmd_count;   /* how many snaps */
-       struct snap     tblcmd_snaps[SNAP_MAX]; /* sorted times! */
-};
-
-
-struct snap_table {
-       spinlock_t          tbl_lock;
-       unsigned int tbl_count; /* how many snapshots exist in this table*/
-       int tbl_used;  /* bitmap of snaps in use by a device */
-       time_t tbl_times[SNAP_MAX];
-       int tbl_index[SNAP_MAX];
-};
-
-
-/* this is the obd device descriptor: 
-   - current snapshot ends up in first slot of this array
- */
-struct snap_obd {
-       unsigned int snap_index;  /* which snapshot index are we accessing */
-       int snap_tableno;
-};
-
-
-/* stored as inline data in the objects */
-struct snap_object_data {
-       int od_magic;
-       /* id of snaps of object; slot 0 has the current data */
-       unsigned long od_ids[SNAP_MAX];
-};
-
 void snap_use(int table_no, int snap_index) ;
 void snap_unuse(int table_no, int snap_index) ;
 int snap_is_used(int table_no, int snap_index) ;