linux/include/linux/qnx4_fs.h
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   1/*
   2 *  Name                         : qnx4_fs.h
   3 *  Author                       : Richard Frowijn
   4 *  Function                     : qnx4 global filesystem definitions
   5 *  History                      : 23-03-1998 created
   6 */
   7#ifndef _LINUX_QNX4_FS_H
   8#define _LINUX_QNX4_FS_H
   9
  10#include <linux/types.h>
  11#include <linux/qnxtypes.h>
  12#include <linux/magic.h>
  13
  14#define QNX4_ROOT_INO 1
  15
  16#define QNX4_MAX_XTNTS_PER_XBLK 60
  17/* for di_status */
  18#define QNX4_FILE_USED          0x01
  19#define QNX4_FILE_MODIFIED      0x02
  20#define QNX4_FILE_BUSY          0x04
  21#define QNX4_FILE_LINK          0x08
  22#define QNX4_FILE_INODE         0x10
  23#define QNX4_FILE_FSYSCLEAN     0x20
  24
  25#define QNX4_I_MAP_SLOTS        8
  26#define QNX4_Z_MAP_SLOTS        64
  27#define QNX4_VALID_FS           0x0001  /* Clean fs. */
  28#define QNX4_ERROR_FS           0x0002  /* fs has errors. */
  29#define QNX4_BLOCK_SIZE         0x200   /* blocksize of 512 bytes */
  30#define QNX4_BLOCK_SIZE_BITS    9       /* blocksize shift */
  31#define QNX4_DIR_ENTRY_SIZE     0x040   /* dir entry size of 64 bytes */
  32#define QNX4_DIR_ENTRY_SIZE_BITS 6      /* dir entry size shift */
  33#define QNX4_XBLK_ENTRY_SIZE    0x200   /* xblk entry size */
  34#define QNX4_INODES_PER_BLOCK   0x08    /* 512 / 64 */
  35
  36/* for filenames */
  37#define QNX4_SHORT_NAME_MAX     16
  38#define QNX4_NAME_MAX           48
  39
  40/*
  41 * This is the original qnx4 inode layout on disk.
  42 */
  43struct qnx4_inode_entry {
  44        char            di_fname[QNX4_SHORT_NAME_MAX];
  45        qnx4_off_t      di_size;
  46        qnx4_xtnt_t     di_first_xtnt;
  47        __le32          di_xblk;
  48        __le32          di_ftime;
  49        __le32          di_mtime;
  50        __le32          di_atime;
  51        __le32          di_ctime;
  52        qnx4_nxtnt_t    di_num_xtnts;
  53        qnx4_mode_t     di_mode;
  54        qnx4_muid_t     di_uid;
  55        qnx4_mgid_t     di_gid;
  56        qnx4_nlink_t    di_nlink;
  57        __u8            di_zero[4];
  58        qnx4_ftype_t    di_type;
  59        __u8            di_status;
  60};
  61
  62struct qnx4_link_info {
  63        char            dl_fname[QNX4_NAME_MAX];
  64        __le32          dl_inode_blk;
  65        __u8            dl_inode_ndx;
  66        __u8            dl_spare[10];
  67        __u8            dl_status;
  68};
  69
  70struct qnx4_xblk {
  71        __le32          xblk_next_xblk;
  72        __le32          xblk_prev_xblk;
  73        __u8            xblk_num_xtnts;
  74        __u8            xblk_spare[3];
  75        __le32          xblk_num_blocks;
  76        qnx4_xtnt_t     xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK];
  77        char            xblk_signature[8];
  78        qnx4_xtnt_t     xblk_first_xtnt;
  79};
  80
  81struct qnx4_super_block {
  82        struct qnx4_inode_entry RootDir;
  83        struct qnx4_inode_entry Inode;
  84        struct qnx4_inode_entry Boot;
  85        struct qnx4_inode_entry AltBoot;
  86};
  87
  88#endif
  89
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