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root/fs/freevxfs/vxfs_inode.h

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/*
 * 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_INODE_H_
#define _VXFS_INODE_H_

/*
 * Veritas filesystem driver - inode structure.
 *
 * This file contains the definition of the disk and core
 * inodes of the Veritas Filesystem.
 */


#define VXFS_ISIZE              0x100           /* Inode size */

#define VXFS_NDADDR             10              /* Number of direct addrs in inode */
#define VXFS_NIADDR             2               /* Number of indirect addrs in inode */
#define VXFS_NIMMED             96              /* Size of immediate data in inode */
#define VXFS_NTYPED             6               /* Num of typed extents */

#define VXFS_TYPED_OFFSETMASK   (0x00FFFFFFFFFFFFFFULL)
#define VXFS_TYPED_TYPEMASK     (0xFF00000000000000ULL)
#define VXFS_TYPED_TYPESHIFT    56

#define VXFS_TYPED_PER_BLOCK(sbp) \
        ((sbp)->s_blocksize / sizeof(struct vxfs_typed))

/*
 * Possible extent descriptor types for %VXFS_ORG_TYPED extents.
 */
enum {
        VXFS_TYPED_INDIRECT             = 1,
        VXFS_TYPED_DATA                 = 2,
        VXFS_TYPED_INDIRECT_DEV4        = 3,
        VXFS_TYPED_DATA_DEV4            = 4,
};

/*
 * Data stored immediately in the inode.
 */
struct vxfs_immed {
        u_int8_t        vi_immed[VXFS_NIMMED];
};

struct vxfs_ext4 {
        u_int32_t               ve4_spare;              /* ?? */
        u_int32_t               ve4_indsize;            /* Indirect extent size */
        vx_daddr_t              ve4_indir[VXFS_NIADDR]; /* Indirect extents */
        struct direct {                                 /* Direct extents */
                vx_daddr_t      extent;                 /* Extent number */
                int32_t         size;                   /* Size of extent */
        } ve4_direct[VXFS_NDADDR];
};

struct vxfs_typed {
        u_int64_t       vt_hdr;         /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
        vx_daddr_t      vt_block;       /* Extent block */
        int32_t         vt_size;        /* Size in blocks */
};

struct vxfs_typed_dev4 {
        u_int64_t       vd4_hdr;        /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
        u_int64_t       vd4_block;      /* Extent block */
        u_int64_t       vd4_size;       /* Size in blocks */
        int32_t         vd4_dev;        /* Device ID */
        u_int32_t       __pad1;
};

/*
 * The inode as contained on the physical device.
 */
struct vxfs_dinode {
        int32_t         vdi_mode;
        u_int32_t       vdi_nlink;      /* Link count */
        u_int32_t       vdi_uid;        /* UID */
        u_int32_t       vdi_gid;        /* GID */
        u_int64_t       vdi_size;       /* Inode size in bytes */
        u_int32_t       vdi_atime;      /* Last time accessed - sec */
        u_int32_t       vdi_autime;     /* Last time accessed - usec */
        u_int32_t       vdi_mtime;      /* Last modify time - sec */
        u_int32_t       vdi_mutime;     /* Last modify time - usec */
        u_int32_t       vdi_ctime;      /* Create time - sec */
        u_int32_t       vdi_cutime;     /* Create time - usec */
        u_int8_t        vdi_aflags;     /* Allocation flags */
        u_int8_t        vdi_orgtype;    /* Organisation type */
        u_int16_t       vdi_eopflags;
        u_int32_t       vdi_eopdata;
        union {
                u_int32_t               rdev;
                u_int32_t               dotdot;
                struct {
                        u_int32_t       reserved;
                        u_int32_t       fixextsize;
                } i_regular;
                struct {
                        u_int32_t       matchino;
                        u_int32_t       fsetindex;
                } i_vxspec;
                u_int64_t               align;
        } vdi_ftarea;
        u_int32_t       vdi_blocks;     /* How much blocks does inode occupy */
        u_int32_t       vdi_gen;        /* Inode generation */
        u_int64_t       vdi_version;    /* Version */
        union {
                struct vxfs_immed       immed;
                struct vxfs_ext4        ext4;
                struct vxfs_typed       typed[VXFS_NTYPED];
        } vdi_org;
        u_int32_t       vdi_iattrino;
};

#define vdi_rdev        vdi_ftarea.rdev
#define vdi_dotdot      vdi_ftarea.dotdot
#define vdi_fixextsize  vdi_ftarea.regular.fixextsize
#define vdi_matchino    vdi_ftarea.vxspec.matchino
#define vdi_fsetindex   vdi_ftarea.vxspec.fsetindex

#define vdi_immed       vdi_org.immed
#define vdi_ext4        vdi_org.ext4
#define vdi_typed       vdi_org.typed


/*
 * The inode as represented in the main memory.
 *
 * TBD: This should become a separate structure...
 */
#define vxfs_inode_info vxfs_dinode

#define vii_mode        vdi_mode
#define vii_uid         vdi_uid
#define vii_gid         vdi_gid
#define vii_nlink       vdi_nlink
#define vii_size        vdi_size
#define vii_atime       vdi_atime
#define vii_ctime       vdi_ctime
#define vii_mtime       vdi_mtime
#define vii_blocks      vdi_blocks
#define vii_org         vdi_org
#define vii_orgtype     vdi_orgtype
#define vii_gen         vdi_gen

#define vii_rdev        vdi_ftarea.rdev
#define vii_dotdot      vdi_ftarea.dotdot
#define vii_fixextsize  vdi_ftarea.regular.fixextsize
#define vii_matchino    vdi_ftarea.vxspec.matchino
#define vii_fsetindex   vdi_ftarea.vxspec.fsetindex

#define vii_immed       vdi_org.immed
#define vii_ext4        vdi_org.ext4
#define vii_typed       vdi_org.typed

#endif /* _VXFS_INODE_H_ */

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