X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Finclude%2Flinux%2Fobd_snap.h;h=b7641d405fbc07574d8012a272be30e156b17808;hb=18d0a1fd68fada7d71f39ccbe76a28dd55c100c3;hp=b846fab7feacd399a67b5228ca981a2b43667624;hpb=3146d280a803ae5f9749bab8cde36105de43fcb9;p=fs%2Flustre-release.git

diff --git a/lustre/include/linux/obd_snap.h b/lustre/include/linux/obd_snap.h
index b846fab..b7641d4 100644
--- a/lustre/include/linux/obd_snap.h
+++ b/lustre/include/linux/obd_snap.h
@@ -1,28 +1,29 @@
-#ifndef _OBD_SIM
-#define _OBD_SIM
+#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 0x47224722
+#include <linux/obd_class.h>
 
-#define SNAP_MAX  8 /* must fit in "u" area of struct inode */
-struct snap_obd_data {
-	int snap_dev;             /* which device contains the data */
-	unsigned int snap_no;    /* which snapshot are we accessing */
-	unsigned int snap_count; /* how many snapshots exist */
-	time_t snap_times[SNAP_MAX];
-};
+#define OBD_SNAP_MAGIC 0xfffffff3   /* an unlikely block number */
 
-struct snap_obd {
-	unsigned int snap_no;    /* which snapshot are we accessing */
-	unsigned int snap_count; /* how many snapshots exist */
-	time_t snap_times[SNAP_MAX];
-};
-
-struct snap_object_data {
-	int od_magic;
-	/* id of snaps of object; slot 0 has the current data */
-	unsigned long od_ids[SNAP_MAX + 1]; 
-}
+#ifndef OBD_SNAP_DEVICENAME
+#define OBD_SNAP_DEVICENAME "obdsnap"
+#endif
 
+/* ioctls for manipulating snapshots 40 - 60 */
+#define OBD_SNAP_SETTABLE	_IOWR('f', 40, long)
+#define OBD_SNAP_PRINTTABLE	_IOWR('f', 41, long)
+#define OBD_SNAP_DELETE	_IOWR('f', 42, long)
+#define OBD_SNAP_RESTORE	_IOWR('f', 43, long)
 
+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) ;
+int snap_table_attach(int tableno, int snap_index);
 
 #endif