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

• Lines: 266
• Date: Mon May 21 12:31:06 2001
• Orig file: v2.4.4/linux/fs/freevxfs/vxfs.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/fs/freevxfs/vxfs.h linux/fs/freevxfs/vxfs.h
@@ -0,0 +1,265 @@
+/*
+ * 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_SUPER_H_
+#define _VXFS_SUPER_H_
+
+#ident "$Id: vxfs.h 1.11 2001/05/21 15:40:28 hch Exp hch $"
+
+/*
+ * Veritas filesystem driver - superblock structure.
+ *
+ * This file contains the definition of the disk and core
+ * superblocks of the Veritas Filesystem.
+ */
+#include <linux/types.h>
+
+
+/*
+ * Data types for use with the VxFS ondisk format.
+ */
+typedef	int32_t		vx_daddr_t;
+typedef int32_t		vx_ino_t;
+
+/*
+ * Superblock magic number (vxfs_super->vs_magic).
+ */
+#define VXFS_SUPER_MAGIC	0xa501FCF5
+
+/*
+ * The root inode.
+ */
+#define VXFS_ROOT_INO		2
+
+/*
+ * Num of entries in free extent array
+ */
+#define VXFS_NEFREE		32
+
+
+/*
+ * VxFS superblock (disk).
+ */
+struct vxfs_sb {
+	/*
+	 * Readonly fields for the version 1 superblock.
+	 *
+	 * Lots of this fields are no more used by version 2
+	 * and never filesystems.
+	 */
+	u_int32_t	vs_magic;		/* Magic number */
+	int32_t		vs_version;		/* VxFS version */
+	u_int32_t	vs_ctime;		/* create time - secs */
+	u_int32_t	vs_cutime;		/* create time - usecs */
+	int32_t		__unused1;		/* unused */
+	int32_t		__unused2;		/* unused */
+	vx_daddr_t	vs_old_logstart;	/* obsolete */
+	vx_daddr_t	vs_old_logend;		/* obsolete */
+	int32_t		vs_bsize;		/* block size */
+	int32_t		vs_size;		/* number of blocks */
+	int32_t		vs_dsize;		/* number of data blocks */
+	u_int32_t	vs_old_ninode;		/* obsolete */
+	int32_t		vs_old_nau;		/* obsolete */
+	int32_t		__unused3;		/* unused */
+	int32_t		vs_old_defiextsize;	/* obsolete */
+	int32_t		vs_old_ilbsize;		/* obsolete */
+	int32_t		vs_immedlen;		/* size of immediate data area */
+	int32_t		vs_ndaddr;		/* number of direct extentes */
+	vx_daddr_t	vs_firstau;		/* address of first AU */
+	vx_daddr_t	vs_emap;		/* offset of extent map in AU */
+	vx_daddr_t	vs_imap;		/* offset of inode map in AU */
+	vx_daddr_t	vs_iextop;		/* offset of ExtOp. map in AU */
+	vx_daddr_t	vs_istart;		/* offset of inode list in AU */
+	vx_daddr_t	vs_bstart;		/* offset of fdblock in AU */
+	vx_daddr_t	vs_femap;		/* aufirst + emap */
+	vx_daddr_t	vs_fimap;		/* aufirst + imap */
+	vx_daddr_t	vs_fiextop;		/* aufirst + iextop */
+	vx_daddr_t	vs_fistart;		/* aufirst + istart */
+	vx_daddr_t	vs_fbstart;		/* aufirst + bstart */
+	int32_t		vs_nindir;		/* number of entries in indir */
+	int32_t		vs_aulen;		/* length of AU in blocks */
+	int32_t		vs_auimlen;		/* length of imap in blocks */
+	int32_t		vs_auemlen;		/* length of emap in blocks */
+	int32_t		vs_auilen;		/* length of ilist in blocks */
+	int32_t		vs_aupad;		/* length of pad in blocks */
+	int32_t		vs_aublocks;		/* data blocks in AU */
+	int32_t		vs_maxtier;		/* log base 2 of aublocks */
+	int32_t		vs_inopb;		/* number of inodes per blk */
+	int32_t		vs_old_inopau;		/* obsolete */
+	int32_t		vs_old_inopilb;		/* obsolete */
+	int32_t		vs_old_ndiripau;	/* obsolete */
+	int32_t		vs_iaddrlen;		/* size of indirect addr ext. */
+	int32_t		vs_bshift;		/* log base 2 of bsize */
+	int32_t		vs_inoshift;		/* log base 2 of inobp */
+	int32_t		vs_bmask;		/* ~( bsize - 1 ) */
+	int32_t		vs_boffmask;		/* bsize - 1 */
+	int32_t		vs_old_inomask;		/* old_inopilb - 1 */
+	int32_t		vs_checksum;		/* checksum of V1 data */
+	
+	/*
+	 * Version 1, writable
+	 */
+	int32_t		vs_free;		/* number of free blocks */
+	int32_t		vs_ifree;		/* number of free inodes */
+	int32_t		vs_efree[VXFS_NEFREE];	/* number of free extents by size */
+	int32_t		vs_flags;		/* flags ?!? */
+	u_int8_t	vs_mod;			/* filesystem has been changed */
+	u_int8_t	vs_clean;		/* clean FS */
+	u_int16_t	__unused4;		/* unused */
+	u_int32_t	vs_firstlogid;		/* mount time log ID */
+	u_int32_t	vs_wtime;		/* last time written - sec */
+	u_int32_t	vs_wutime;		/* last time written - usec */
+	u_int8_t	vs_fname[6];		/* FS name */
+	u_int8_t	vs_fpack[6];		/* FS pack name */
+	int32_t		vs_logversion;		/* log format version */
+	int32_t		__unused5;		/* unused */
+	
+	/*
+	 * Version 2, Read-only
+	 */
+	vx_daddr_t	vs_oltext[2];		/* OLT extent and replica */
+	int32_t		vs_oltsize;		/* OLT extent size */
+	int32_t		vs_iauimlen;		/* size of inode map */
+	int32_t		vs_iausize;		/* size of IAU in blocks */
+	int32_t		vs_dinosize;		/* size of inode in bytes */
+	int32_t		vs_old_dniaddr;		/* indir levels per inode */
+	int32_t		vs_checksum2;		/* checksum of V2 RO */
+
+	/*
+	 * Actually much more...
+	 */
+};
+
+
+/*
+ * In core superblock filesystem private data for VxFS.
+ */
+struct vxfs_sb_info {
+	struct vxfs_sb		*vsi_raw;	/* raw (on disk) supeblock */
+	struct buffer_head	*vsi_bp;	/* buffer for raw superblock*/
+	struct inode		*vsi_fship;	/* fileset header inode */
+	struct inode		*vsi_ilist;	/* inode list inode */
+	struct inode		*vsi_stilist;	/* structual inode list inode */
+	u_long			vsi_iext;	/* initial inode list */
+	ino_t			vsi_fshino;	/* fileset header inode */
+	daddr_t			vsi_oltext;	/* OLT extent */
+	daddr_t			vsi_oltsize;	/* OLT size */
+};
+
+
+/*
+ * File modes.  File types above 0xf000 are vxfs internal only, they should
+ * not be passed back to higher levels of the system.  vxfs file types must
+ * never have one of the regular file type bits set.
+ */
+enum vxfs_mode {
+	VXFS_ISUID = 0x00000800,	/* setuid */
+	VXFS_ISGID = 0x00000400,	/* setgid */
+	VXFS_ISVTX = 0x00000200,	/* sticky bit */
+	VXFS_IREAD = 0x00000100,	/* read */
+	VXFS_IWRITE = 0x00000080,	/* write */
+	VXFS_IEXEC = 0x00000040,	/* exec */
+
+	VXFS_IFIFO = 0x00001000,	/* Named pipe */
+	VXFS_IFCHR = 0x00002000,	/* Character device */
+	VXFS_IFDIR = 0x00004000,	/* Directory */
+	VXFS_IFNAM = 0x00005000,	/* Xenix device ?? */
+	VXFS_IFBLK = 0x00006000,	/* Block device */
+	VXFS_IFREG = 0x00008000,	/* Regular file */
+	VXFS_IFCMP = 0x00009000,	/* Compressed file ?!? */
+	VXFS_IFLNK = 0x0000a000,	/* Symlink */
+	VXFS_IFSOC = 0x0000c000,	/* Socket */
+
+	/* VxFS internal */
+	VXFS_IFFSH = 0x10000000,	/* Fileset header */
+	VXFS_IFILT = 0x20000000,	/* Inode list */
+	VXFS_IFIAU = 0x30000000,	/* Inode allocation unit */
+	VXFS_IFCUT = 0x40000000,	/* Current usage table */
+	VXFS_IFATT = 0x50000000,	/* Attr. inode */
+	VXFS_IFLCT = 0x60000000,	/* Link count table */
+	VXFS_IFIAT = 0x70000000,	/* Indirect attribute file */
+	VXFS_IFEMR = 0x80000000,	/* Extent map reorg file */
+	VXFS_IFQUO = 0x90000000,	/* BSD quota file */
+	VXFS_IFPTI = 0xa0000000,	/* "Pass through" inode */
+	VXFS_IFLAB = 0x11000000,	/* Device label file */
+	VXFS_IFOLT = 0x12000000,	/* OLT file */
+	VXFS_IFLOG = 0x13000000,	/* Log file */
+	VXFS_IFEMP = 0x14000000,	/* Extent map file */
+	VXFS_IFEAU = 0x15000000,	/* Extent AU file */
+	VXFS_IFAUS = 0x16000000,	/* Extent AU summary file */
+	VXFS_IFDEV = 0x17000000,	/* Device config file */
+
+};
+
+#define	VXFS_TYPE_MASK		0xfffff000
+
+#define VXFS_IS_TYPE(ip,type)	(((ip)->vii_mode & VXFS_TYPE_MASK) == (type))
+#define VXFS_ISFIFO(x)		VXFS_IS_TYPE((x),VXFS_IFIFO)
+#define VXFS_ISCHR(x)		VXFS_IS_TYPE((x),VXFS_IFCHR)
+#define VXFS_ISDIR(x)		VXFS_IS_TYPE((x),VXFS_IFDIR)
+#define VXFS_ISNAM(x)		VXFS_IS_TYPE((x),VXFS_IFNAM)
+#define VXFS_ISBLK(x)		VXFS_IS_TYPE((x),VXFS_IFBLK)
+#define VXFS_ISLNK(x)		VXFS_IS_TYPE((x),VXFS_IFLNK)
+#define VXFS_ISREG(x)		VXFS_IS_TYPE((x),VXFS_IFREG)
+#define VXFS_ISCMP(x)		VXFS_IS_TYPE((x),VXFS_IFCMP)
+#define VXFS_ISSOC(x)		VXFS_IS_TYPE((x),VXFS_IFSOC)
+
+#define VXFS_ISFSH(x)		VXFS_IS_TYPE((x),VXFS_IFFSH)
+#define VXFS_ISILT(x)		VXFS_IS_TYPE((x),VXFS_IFILT)
+
+/*
+ * Inmode organisation types.
+ */
+enum {
+	VXFS_ORG_NONE	= 0,	/* Inode has *no* format ?!? */
+	VXFS_ORG_EXT4	= 1,	/* Ext4 */
+	VXFS_ORG_IMMED	= 2,	/* All data stored in inode */
+	VXFS_ORG_TYPED	= 3,	/* Typed extents */
+};
+
+#define VXFS_IS_ORG(ip,org)	((ip)->vii_orgtype == (org))
+#define VXFS_ISNONE(ip)		VXFS_IS_ORG((ip), VXFS_ORG_NONE)
+#define VXFS_ISEXT4(ip)		VXFS_IS_ORG((ip), VXFS_ORG_EXT4)
+#define VXFS_ISIMMED(ip)	VXFS_IS_ORG((ip), VXFS_ORG_IMMED)
+#define VXFS_ISTYPED(ip)	VXFS_IS_ORG((ip), VXFS_ORG_TYPED)
+
+
+/*
+ * Get filesystem private data from VFS inode.
+ */
+#define VXFS_INO(ip) \
+	((struct vxfs_inode_info *)(ip)->u.generic_ip)
+
+/*
+ * Get filesystem private data from VFS superblock.
+ */
+#define VXFS_SBI(sbp) \
+	((struct vxfs_sb_info *)(sbp)->u.generic_sbp)
+
+#endif /* _VXFS_SUPER_H_ */