root/include/linux/qnx6_fs.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  Name                 : qnx6_fs.h
   4  *  Author               : Kai Bankett
   5  *  Function             : qnx6 global filesystem definitions
   6  *  History              : 17-01-2012 created
   7  */
   8 #ifndef _LINUX_QNX6_FS_H
   9 #define _LINUX_QNX6_FS_H
  10 
  11 #include <linux/types.h>
  12 #include <linux/magic.h>
  13 
  14 #define QNX6_ROOT_INO 1
  15 
  16 /* for di_status */
  17 #define QNX6_FILE_DIRECTORY     0x01
  18 #define QNX6_FILE_DELETED       0x02
  19 #define QNX6_FILE_NORMAL        0x03
  20 
  21 #define QNX6_SUPERBLOCK_SIZE    0x200   /* superblock always is 512 bytes */
  22 #define QNX6_SUPERBLOCK_AREA    0x1000  /* area reserved for superblock */
  23 #define QNX6_BOOTBLOCK_SIZE     0x2000  /* heading bootblock area */
  24 #define QNX6_DIR_ENTRY_SIZE     0x20    /* dir entry size of 32 bytes */
  25 #define QNX6_INODE_SIZE         0x80    /* each inode is 128 bytes */
  26 #define QNX6_INODE_SIZE_BITS    7       /* inode entry size shift */
  27 
  28 #define QNX6_NO_DIRECT_POINTERS 16      /* 16 blockptrs in sbl/inode */
  29 #define QNX6_PTR_MAX_LEVELS     5       /* maximum indirect levels */
  30 
  31 /* for filenames */
  32 #define QNX6_SHORT_NAME_MAX     27
  33 #define QNX6_LONG_NAME_MAX      510
  34 
  35 /* list of mount options */
  36 #define QNX6_MOUNT_MMI_FS       0x010000 /* mount as Audi MMI 3G fs */
  37 
  38 /*
  39  * This is the original qnx6 inode layout on disk.
  40  * Each inode is 128 byte long.
  41  */
  42 struct qnx6_inode_entry {
  43         __fs64          di_size;
  44         __fs32          di_uid;
  45         __fs32          di_gid;
  46         __fs32          di_ftime;
  47         __fs32          di_mtime;
  48         __fs32          di_atime;
  49         __fs32          di_ctime;
  50         __fs16          di_mode;
  51         __fs16          di_ext_mode;
  52         __fs32          di_block_ptr[QNX6_NO_DIRECT_POINTERS];
  53         __u8            di_filelevels;
  54         __u8            di_status;
  55         __u8            di_unknown2[2];
  56         __fs32          di_zero2[6];
  57 };
  58 
  59 /*
  60  * Each directory entry is maximum 32 bytes long.
  61  * If more characters or special characters required it is stored
  62  * in the longfilenames structure.
  63  */
  64 struct qnx6_dir_entry {
  65         __fs32          de_inode;
  66         __u8            de_size;
  67         char            de_fname[QNX6_SHORT_NAME_MAX];
  68 };
  69 
  70 /*
  71  * Longfilename direntries have a different structure
  72  */
  73 struct qnx6_long_dir_entry {
  74         __fs32          de_inode;
  75         __u8            de_size;
  76         __u8            de_unknown[3];
  77         __fs32          de_long_inode;
  78         __fs32          de_checksum;
  79 };
  80 
  81 struct qnx6_long_filename {
  82         __fs16          lf_size;
  83         __u8            lf_fname[QNX6_LONG_NAME_MAX];
  84 };
  85 
  86 struct qnx6_root_node {
  87         __fs64          size;
  88         __fs32          ptr[QNX6_NO_DIRECT_POINTERS];
  89         __u8            levels;
  90         __u8            mode;
  91         __u8            spare[6];
  92 };
  93 
  94 struct qnx6_super_block {
  95         __fs32          sb_magic;
  96         __fs32          sb_checksum;
  97         __fs64          sb_serial;
  98         __fs32          sb_ctime;       /* time the fs was created */
  99         __fs32          sb_atime;       /* last access time */
 100         __fs32          sb_flags;
 101         __fs16          sb_version1;    /* filesystem version information */
 102         __fs16          sb_version2;    /* filesystem version information */
 103         __u8            sb_volumeid[16];
 104         __fs32          sb_blocksize;
 105         __fs32          sb_num_inodes;
 106         __fs32          sb_free_inodes;
 107         __fs32          sb_num_blocks;
 108         __fs32          sb_free_blocks;
 109         __fs32          sb_allocgroup;
 110         struct qnx6_root_node Inode;
 111         struct qnx6_root_node Bitmap;
 112         struct qnx6_root_node Longfile;
 113         struct qnx6_root_node Unknown;
 114 };
 115 
 116 /* Audi MMI 3G superblock layout is different to plain qnx6 */
 117 struct qnx6_mmi_super_block {
 118         __fs32          sb_magic;
 119         __fs32          sb_checksum;
 120         __fs64          sb_serial;
 121         __u8            sb_spare0[12];
 122         __u8            sb_id[12];
 123         __fs32          sb_blocksize;
 124         __fs32          sb_num_inodes;
 125         __fs32          sb_free_inodes;
 126         __fs32          sb_num_blocks;
 127         __fs32          sb_free_blocks;
 128         __u8            sb_spare1[4];
 129         struct qnx6_root_node Inode;
 130         struct qnx6_root_node Bitmap;
 131         struct qnx6_root_node Longfile;
 132         struct qnx6_root_node Unknown;
 133 };
 134 
 135 #endif