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kernel/linux-rt-4.4.41/include/linux/qnx6_fs.h 3.23 KB
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  /*
   *  Name                 : qnx6_fs.h
   *  Author               : Kai Bankett
   *  Function             : qnx6 global filesystem definitions
   *  History              : 17-01-2012 created
   */
  #ifndef _LINUX_QNX6_FS_H
  #define _LINUX_QNX6_FS_H
  
  #include <linux/types.h>
  #include <linux/magic.h>
  
  #define QNX6_ROOT_INO 1
  
  /* for di_status */
  #define QNX6_FILE_DIRECTORY	0x01
  #define QNX6_FILE_DELETED	0x02
  #define QNX6_FILE_NORMAL	0x03
  
  #define QNX6_SUPERBLOCK_SIZE	0x200	/* superblock always is 512 bytes */
  #define QNX6_SUPERBLOCK_AREA	0x1000	/* area reserved for superblock */
  #define	QNX6_BOOTBLOCK_SIZE	0x2000	/* heading bootblock area */
  #define QNX6_DIR_ENTRY_SIZE	0x20	/* dir entry size of 32 bytes */
  #define QNX6_INODE_SIZE		0x80	/* each inode is 128 bytes */
  #define QNX6_INODE_SIZE_BITS	7	/* inode entry size shift */
  
  #define QNX6_NO_DIRECT_POINTERS	16	/* 16 blockptrs in sbl/inode */
  #define QNX6_PTR_MAX_LEVELS	5	/* maximum indirect levels */
  
  /* for filenames */
  #define QNX6_SHORT_NAME_MAX	27
  #define QNX6_LONG_NAME_MAX	510
  
  /* list of mount options */
  #define QNX6_MOUNT_MMI_FS	0x010000 /* mount as Audi MMI 3G fs */
  
  /*
   * This is the original qnx6 inode layout on disk.
   * Each inode is 128 byte long.
   */
  struct qnx6_inode_entry {
  	__fs64		di_size;
  	__fs32		di_uid;
  	__fs32		di_gid;
  	__fs32		di_ftime;
  	__fs32		di_mtime;
  	__fs32		di_atime;
  	__fs32		di_ctime;
  	__fs16		di_mode;
  	__fs16		di_ext_mode;
  	__fs32		di_block_ptr[QNX6_NO_DIRECT_POINTERS];
  	__u8		di_filelevels;
  	__u8		di_status;
  	__u8		di_unknown2[2];
  	__fs32		di_zero2[6];
  };
  
  /*
   * Each directory entry is maximum 32 bytes long.
   * If more characters or special characters required it is stored
   * in the longfilenames structure.
   */
  struct qnx6_dir_entry {
  	__fs32		de_inode;
  	__u8		de_size;
  	char		de_fname[QNX6_SHORT_NAME_MAX];
  };
  
  /*
   * Longfilename direntries have a different structure
   */
  struct qnx6_long_dir_entry {
  	__fs32		de_inode;
  	__u8		de_size;
  	__u8		de_unknown[3];
  	__fs32		de_long_inode;
  	__fs32		de_checksum;
  };
  
  struct qnx6_long_filename {
  	__fs16		lf_size;
  	__u8		lf_fname[QNX6_LONG_NAME_MAX];
  };
  
  struct qnx6_root_node {
  	__fs64		size;
  	__fs32		ptr[QNX6_NO_DIRECT_POINTERS];
  	__u8		levels;
  	__u8		mode;
  	__u8		spare[6];
  };
  
  struct qnx6_super_block {
  	__fs32		sb_magic;
  	__fs32		sb_checksum;
  	__fs64		sb_serial;
  	__fs32		sb_ctime;	/* time the fs was created */
  	__fs32		sb_atime;	/* last access time */
  	__fs32		sb_flags;
  	__fs16		sb_version1;	/* filesystem version information */
  	__fs16		sb_version2;	/* filesystem version information */
  	__u8		sb_volumeid[16];
  	__fs32		sb_blocksize;
  	__fs32		sb_num_inodes;
  	__fs32		sb_free_inodes;
  	__fs32		sb_num_blocks;
  	__fs32		sb_free_blocks;
  	__fs32		sb_allocgroup;
  	struct qnx6_root_node Inode;
  	struct qnx6_root_node Bitmap;
  	struct qnx6_root_node Longfile;
  	struct qnx6_root_node Unknown;
  };
  
  /* Audi MMI 3G superblock layout is different to plain qnx6 */
  struct qnx6_mmi_super_block {
  	__fs32		sb_magic;
  	__fs32		sb_checksum;
  	__fs64		sb_serial;
  	__u8		sb_spare0[12];
  	__u8		sb_id[12];
  	__fs32		sb_blocksize;
  	__fs32		sb_num_inodes;
  	__fs32		sb_free_inodes;
  	__fs32		sb_num_blocks;
  	__fs32		sb_free_blocks;
  	__u8		sb_spare1[4];
  	struct qnx6_root_node Inode;
  	struct qnx6_root_node Bitmap;
  	struct qnx6_root_node Longfile;
  	struct qnx6_root_node Unknown;
  };
  
  #endif