LXR linux/include/linux/qnx6

   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 */
  42struct 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 */
  64struct 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 */
  73struct 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
  81struct qnx6_long_filename {
  82        __fs16          lf_size;
  83        __u8            lf_fname[QNX6_LONG_NAME_MAX];
  84};
  85
  86struct 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
  94struct 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 */
 117struct 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
 136