linux/include/linux/qnx6_fs.h
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   1/*
   2 *  Name                 : qnx6_fs.h
   3 *  Author               : Kai Bankett
   4 *  Function             : qnx6 global filesystem definitions
   5 *  History              : 17-01-2012 created
   6 */
   7#ifndef _LINUX_QNX6_FS_H
   8#define _LINUX_QNX6_FS_H
   9
  10#include <linux/types.h>
  11#include <linux/magic.h>
  12
  13#define QNX6_ROOT_INO 1
  14
  15/* for di_status */
  16#define QNX6_FILE_DIRECTORY     0x01
  17#define QNX6_FILE_DELETED       0x02
  18#define QNX6_FILE_NORMAL        0x03
  19
  20#define QNX6_SUPERBLOCK_SIZE    0x200   /* superblock always is 512 bytes */
  21#define QNX6_SUPERBLOCK_AREA    0x1000  /* area reserved for superblock */
  22#define QNX6_BOOTBLOCK_SIZE     0x2000  /* heading bootblock area */
  23#define QNX6_DIR_ENTRY_SIZE     0x20    /* dir entry size of 32 bytes */
  24#define QNX6_INODE_SIZE         0x80    /* each inode is 128 bytes */
  25#define QNX6_INODE_SIZE_BITS    7       /* inode entry size shift */
  26
  27#define QNX6_NO_DIRECT_POINTERS 16      /* 16 blockptrs in sbl/inode */
  28#define QNX6_PTR_MAX_LEVELS     5       /* maximum indirect levels */
  29
  30/* for filenames */
  31#define QNX6_SHORT_NAME_MAX     27
  32#define QNX6_LONG_NAME_MAX      510
  33
  34/* list of mount options */
  35#define QNX6_MOUNT_MMI_FS       0x010000 /* mount as Audi MMI 3G fs */
  36
  37/*
  38 * This is the original qnx6 inode layout on disk.
  39 * Each inode is 128 byte long.
  40 */
  41struct qnx6_inode_entry {
  42        __fs64          di_size;
  43        __fs32          di_uid;
  44        __fs32          di_gid;
  45        __fs32          di_ftime;
  46        __fs32          di_mtime;
  47        __fs32          di_atime;
  48        __fs32          di_ctime;
  49        __fs16          di_mode;
  50        __fs16          di_ext_mode;
  51        __fs32          di_block_ptr[QNX6_NO_DIRECT_POINTERS];
  52        __u8            di_filelevels;
  53        __u8            di_status;
  54        __u8            di_unknown2[2];
  55        __fs32          di_zero2[6];
  56};
  57
  58/*
  59 * Each directory entry is maximum 32 bytes long.
  60 * If more characters or special characters required it is stored
  61 * in the longfilenames structure.
  62 */
  63struct qnx6_dir_entry {
  64        __fs32          de_inode;
  65        __u8            de_size;
  66        char            de_fname[QNX6_SHORT_NAME_MAX];
  67};
  68
  69/*
  70 * Longfilename direntries have a different structure
  71 */
  72struct qnx6_long_dir_entry {
  73        __fs32          de_inode;
  74        __u8            de_size;
  75        __u8            de_unknown[3];
  76        __fs32          de_long_inode;
  77        __fs32          de_checksum;
  78};
  79
  80struct qnx6_long_filename {
  81        __fs16          lf_size;
  82        __u8            lf_fname[QNX6_LONG_NAME_MAX];
  83};
  84
  85struct qnx6_root_node {
  86        __fs64          size;
  87        __fs32          ptr[QNX6_NO_DIRECT_POINTERS];
  88        __u8            levels;
  89        __u8            mode;
  90        __u8            spare[6];
  91};
  92
  93struct qnx6_super_block {
  94        __fs32          sb_magic;
  95        __fs32          sb_checksum;
  96        __fs64          sb_serial;
  97        __fs32          sb_ctime;       /* time the fs was created */
  98        __fs32          sb_atime;       /* last access time */
  99        __fs32          sb_flags;
 100        __fs16          sb_version1;    /* filesystem version information */
 101        __fs16          sb_version2;    /* filesystem version information */
 102        __u8            sb_volumeid[16];
 103        __fs32          sb_blocksize;
 104        __fs32          sb_num_inodes;
 105        __fs32          sb_free_inodes;
 106        __fs32          sb_num_blocks;
 107        __fs32          sb_free_blocks;
 108        __fs32          sb_allocgroup;
 109        struct qnx6_root_node Inode;
 110        struct qnx6_root_node Bitmap;
 111        struct qnx6_root_node Longfile;
 112        struct qnx6_root_node Unknown;
 113};
 114
 115/* Audi MMI 3G superblock layout is different to plain qnx6 */
 116struct qnx6_mmi_super_block {
 117        __fs32          sb_magic;
 118        __fs32          sb_checksum;
 119        __fs64          sb_serial;
 120        __u8            sb_spare0[12];
 121        __u8            sb_id[12];
 122        __fs32          sb_blocksize;
 123        __fs32          sb_num_inodes;
 124        __fs32          sb_free_inodes;
 125        __fs32          sb_num_blocks;
 126        __fs32          sb_free_blocks;
 127        __u8            sb_spare1[4];
 128        struct qnx6_root_node Inode;
 129        struct qnx6_root_node Bitmap;
 130        struct qnx6_root_node Longfile;
 131        struct qnx6_root_node Unknown;
 132};
 133
 134#endif
 135
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