patch-2.4.5 linux/fs/freevxfs/vxfs_olt.h

• Lines: 148
• Date: Mon May 21 12:31:06 2001
• Orig file: v2.4.4/linux/fs/freevxfs/vxfs_olt.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/fs/freevxfs/vxfs_olt.h linux/fs/freevxfs/vxfs_olt.h
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#ifndef _VXFS_OLT_H_
+#define _VXFS_OLT_H_
+
+#ident "$Id: vxfs_olt.h,v 1.5 2001/04/25 18:11:23 hch Exp hch $"
+
+/*
+ * Veritas filesystem driver - Object Location Table data structures.
+ *
+ * This file contains definitions for the Object Location Table used
+ * by the Veritas Filesystem version 2 and newer.
+ */
+
+
+/*
+ * OLT magic number (vxfs_olt->olt_magic).
+ */
+#define VXFS_OLT_MAGIC		0xa504FCF5
+
+/*
+ * VxFS OLT entry types.
+ */
+enum {
+	VXFS_OLT_FREE	= 1,
+	VXFS_OLT_FSHEAD	= 2,
+	VXFS_OLT_CUT	= 3,
+	VXFS_OLT_ILIST	= 4,
+	VXFS_OLT_DEV	= 5,
+	VXFS_OLT_SB	= 6
+};
+
+/*
+ * VxFS OLT header.
+ *
+ * The Object Location Table header is placed at the beginning of each
+ * OLT extent.  It is used to fing certain filesystem-wide metadata, e.g.
+ * the inital inode list, the fileset header or the device configuration.
+ */
+struct vxfs_olt {
+	u_int32_t	olt_magic;	/* magic number			*/
+	u_int32_t	olt_size;	/* size of this entry		*/
+	u_int32_t	olt_checksum;	/* checksum of extent		*/
+	u_int32_t	__unused1;	/* ???				*/
+	u_int32_t	olt_mtime;	/* time of last mod. (sec)	*/
+	u_int32_t	olt_mutime;	/* time of last mod. (usec)	*/
+	u_int32_t	olt_totfree;	/* free space in OLT extent	*/
+	vx_daddr_t	olt_extents[2];	/* addr of this extent, replica	*/
+	u_int32_t	olt_esize;	/* size of this extent		*/
+	vx_daddr_t	olt_next[2];    /* addr of next extent, replica	*/
+	u_int32_t	olt_nsize;	/* size of next extent		*/
+	u_int32_t	__unused2;	/* align to 8 byte boundary	*/
+};
+
+/*
+ * VxFS common OLT entry (on disk).
+ */
+struct vxfs_oltcommon {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_size;	/* size of this record		*/
+};
+
+/*
+ * VxFS free OLT entry (on disk).
+ */
+struct vxfs_oltfree {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_fsize;	/* size of this free record	*/
+};
+
+/*
+ * VxFS initial-inode list (on disk).
+ */
+struct vxfs_oltilist {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_size;	/* size of this record		*/
+	vx_ino_t	olt_iext[2];	/* initial inode list, replica	*/
+};
+
+/*
+ * Current Usage Table 
+ */
+struct vxfs_oltcut {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_size;	/* size of this record		*/
+	vx_ino_t	olt_cutino;	/* inode of current usage table	*/
+	u_int32_t	__pad;		/* unused, 8 byte align		*/
+};
+
+/*
+ * Inodes containing Superblock, Intent log and OLTs 
+ */
+struct vxfs_oltsb {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_size;	/* size of this record		*/
+	vx_ino_t	olt_sbino;	/* inode of superblock file	*/
+	u_int32_t	__unused1;	/* ???				*/
+	vx_ino_t	olt_logino[2];	/* inode of log file,replica	*/
+	vx_ino_t	olt_oltino[2];	/* inode of OLT, replica	*/
+};
+
+/*
+ * Inode containing device configuration + it's replica 
+ */
+struct vxfs_oltdev {
+	u_int32_t	olt_type;	/* type of this record		*/
+	u_int32_t	olt_size;	/* size of this record		*/
+	vx_ino_t	olt_devino[2];	/* inode of device config files	*/
+};
+
+/*
+ * Fileset header 
+ */
+struct vxfs_oltfshead {
+	u_int32_t	olt_type;	/* type number			*/
+	u_int32_t	olt_size;	/* size of this record		*/
+	vx_ino_t	olt_fsino[2];   /* inodes of fileset header	*/
+};
+
+#endif /* _VXFS_OLT_H_ */