--- /dev/null
+/*
+ * 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_
+
+/*
+ * 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 initial 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_ */
Code Review / kvmfornfv.git / blobdiff