release/src-rt-6.x.4708/linux/linux-2.6.36/fs/freevxfs/vxfs_inode.h

   1 /*
   2  * Copyright (c) 2000-2001 Christoph Hellwig.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions, and the following disclaimer,
  10  *    without modification.
  11  * 2. The name of the author may not be used to endorse or promote products
  12  *    derived from this software without specific prior written permission.
  13  *
  14  * Alternatively, this software may be distributed under the terms of the
  15  * GNU General Public License ("GPL").
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  */
  30 #ifndef _VXFS_INODE_H_
  31 #define _VXFS_INODE_H_
  32
  33 /*
  34  * Veritas filesystem driver - inode structure.
  35  *
  36  * This file contains the definition of the disk and core
  37  * inodes of the Veritas Filesystem.
  38  */
  39
  40
  41 #define VXFS_ISIZE              0x100           /* Inode size */
  42
  43 #define VXFS_NDADDR             10              /* Number of direct addrs in inode */
  44 #define VXFS_NIADDR             2               /* Number of indirect addrs in inode */
  45 #define VXFS_NIMMED             96              /* Size of immediate data in inode */
  46 #define VXFS_NTYPED             6               /* Num of typed extents */
  47
  48 #define VXFS_TYPED_OFFSETMASK   (0x00FFFFFFFFFFFFFFULL)
  49 #define VXFS_TYPED_TYPEMASK     (0xFF00000000000000ULL)
  50 #define VXFS_TYPED_TYPESHIFT    56
  51
  52 #define VXFS_TYPED_PER_BLOCK(sbp) \
  53         ((sbp)->s_blocksize / sizeof(struct vxfs_typed))
  54
  55 /*
  56  * Possible extent descriptor types for %VXFS_ORG_TYPED extents.
  57  */
  58 enum {
  59         VXFS_TYPED_INDIRECT             = 1,
  60         VXFS_TYPED_DATA                 = 2,
  61         VXFS_TYPED_INDIRECT_DEV4        = 3,
  62         VXFS_TYPED_DATA_DEV4            = 4,
  63 };
  64
  65 /*
  66  * Data stored immediately in the inode.
  67  */
  68 struct vxfs_immed {
  69         u_int8_t        vi_immed[VXFS_NIMMED];
  70 };
  71
  72 struct vxfs_ext4 {
  73         u_int32_t               ve4_spare;              /* ?? */
  74         u_int32_t               ve4_indsize;            /* Indirect extent size */
  75         vx_daddr_t              ve4_indir[VXFS_NIADDR]; /* Indirect extents */
  76         struct direct {                                 /* Direct extents */
  77                 vx_daddr_t      extent;                 /* Extent number */
  78                 int32_t         size;                   /* Size of extent */
  79         } ve4_direct[VXFS_NDADDR];
  80 };
  81
  82 struct vxfs_typed {
  83         u_int64_t       vt_hdr;         /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
  84         vx_daddr_t      vt_block;       /* Extent block */
  85         int32_t         vt_size;        /* Size in blocks */
  86 };
  87
  88 struct vxfs_typed_dev4 {
  89         u_int64_t       vd4_hdr;        /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
  90         u_int64_t       vd4_block;      /* Extent block */
  91         u_int64_t       vd4_size;       /* Size in blocks */
  92         int32_t         vd4_dev;        /* Device ID */
  93         u_int32_t       __pad1;
  94 };
  95
  96 /*
  97  * The inode as contained on the physical device.
  98  */
  99 struct vxfs_dinode {
 100         int32_t         vdi_mode;
 101         u_int32_t       vdi_nlink;      /* Link count */
 102         u_int32_t       vdi_uid;        /* UID */
 103         u_int32_t       vdi_gid;        /* GID */
 104         u_int64_t       vdi_size;       /* Inode size in bytes */
 105         u_int32_t       vdi_atime;      /* Last time accessed - sec */
 106         u_int32_t       vdi_autime;     /* Last time accessed - usec */
 107         u_int32_t       vdi_mtime;      /* Last modify time - sec */
 108         u_int32_t       vdi_mutime;     /* Last modify time - usec */
 109         u_int32_t       vdi_ctime;      /* Create time - sec */
 110         u_int32_t       vdi_cutime;     /* Create time - usec */
 111         u_int8_t        vdi_aflags;     /* Allocation flags */
 112         u_int8_t        vdi_orgtype;    /* Organisation type */
 113         u_int16_t       vdi_eopflags;
 114         u_int32_t       vdi_eopdata;
 115         union {
 116                 u_int32_t               rdev;
 117                 u_int32_t               dotdot;
 118                 struct {
 119                         u_int32_t       reserved;
 120                         u_int32_t       fixextsize;
 121                 } i_regular;
 122                 struct {
 123                         u_int32_t       matchino;
 124                         u_int32_t       fsetindex;
 125                 } i_vxspec;
 126                 u_int64_t               align;
 127         } vdi_ftarea;
 128         u_int32_t       vdi_blocks;     /* How much blocks does inode occupy */
 129         u_int32_t       vdi_gen;        /* Inode generation */
 130         u_int64_t       vdi_version;    /* Version */
 131         union {
 132                 struct vxfs_immed       immed;
 133                 struct vxfs_ext4        ext4;
 134                 struct vxfs_typed       typed[VXFS_NTYPED];
 135         } vdi_org;
 136         u_int32_t       vdi_iattrino;
 137 };
 138
 139 #define vdi_rdev        vdi_ftarea.rdev
 140 #define vdi_dotdot      vdi_ftarea.dotdot
 141 #define vdi_fixextsize  vdi_ftarea.regular.fixextsize
 142 #define vdi_matchino    vdi_ftarea.vxspec.matchino
 143 #define vdi_fsetindex   vdi_ftarea.vxspec.fsetindex
 144
 145 #define vdi_immed       vdi_org.immed
 146 #define vdi_ext4        vdi_org.ext4
 147 #define vdi_typed       vdi_org.typed
 148
 149
 150 /*
 151  * The inode as represented in the main memory.
 152  *
 153  * TBD: This should become a separate structure...
 154  */
 155 #define vxfs_inode_info vxfs_dinode
 156
 157 #define vii_mode        vdi_mode
 158 #define vii_uid         vdi_uid
 159 #define vii_gid         vdi_gid
 160 #define vii_nlink       vdi_nlink
 161 #define vii_size        vdi_size
 162 #define vii_atime       vdi_atime
 163 #define vii_ctime       vdi_ctime
 164 #define vii_mtime       vdi_mtime
 165 #define vii_blocks      vdi_blocks
 166 #define vii_org         vdi_org
 167 #define vii_orgtype     vdi_orgtype
 168 #define vii_gen         vdi_gen
 169
 170 #define vii_rdev        vdi_ftarea.rdev
 171 #define vii_dotdot      vdi_ftarea.dotdot
 172 #define vii_fixextsize  vdi_ftarea.regular.fixextsize
 173 #define vii_matchino    vdi_ftarea.vxspec.matchino
 174 #define vii_fsetindex   vdi_ftarea.vxspec.fsetindex
 175
 176 #define vii_immed       vdi_org.immed
 177 #define vii_ext4        vdi_org.ext4
 178 #define vii_typed       vdi_org.typed
 179
 180 #endif /* _VXFS_INODE_H_ */