qnx4_fs.h

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/*
 *  Name                         : qnx4_fs.h
 *  Author                       : Richard Frowijn
 *  Function                     : qnx4 global filesystem definitions
 *  History                      : 23-03-1998 created
 */
#ifndef _LINUX_QNX4_FS_H
#define _LINUX_QNX4_FS_H

#include <linux/types.h>
#include <linux/qnxtypes.h>
#include <linux/magic.h>

#define QNX4_ROOT_INO 1

#define QNX4_MAX_XTNTS_PER_XBLK 60
/* for di_status */
#define QNX4_FILE_USED          0x01
#define QNX4_FILE_MODIFIED      0x02
#define QNX4_FILE_BUSY          0x04
#define QNX4_FILE_LINK          0x08
#define QNX4_FILE_INODE         0x10
#define QNX4_FILE_FSYSCLEAN     0x20

#define QNX4_I_MAP_SLOTS    8
#define QNX4_Z_MAP_SLOTS    64
#define QNX4_VALID_FS       0x0001  /* Clean fs. */
#define QNX4_ERROR_FS       0x0002  /* fs has errors. */
#define QNX4_BLOCK_SIZE         0x200   /* blocksize of 512 bytes */
#define QNX4_BLOCK_SIZE_BITS    9   /* blocksize shift */
#define QNX4_DIR_ENTRY_SIZE     0x040   /* dir entry size of 64 bytes */
#define QNX4_DIR_ENTRY_SIZE_BITS 6  /* dir entry size shift */
#define QNX4_XBLK_ENTRY_SIZE    0x200   /* xblk entry size */
#define QNX4_INODES_PER_BLOCK   0x08    /* 512 / 64 */

/* for filenames */
#define QNX4_SHORT_NAME_MAX 16
#define QNX4_NAME_MAX       48

/*
 * This is the original qnx4 inode layout on disk.
 */
struct qnx4_inode_entry {
    char        di_fname[QNX4_SHORT_NAME_MAX];
    qnx4_off_t  di_size;
    qnx4_xtnt_t di_first_xtnt;
    __le32      di_xblk;
    __le32      di_ftime;
    __le32      di_mtime;
    __le32      di_atime;
    __le32      di_ctime;
    qnx4_nxtnt_t    di_num_xtnts;
    qnx4_mode_t di_mode;
    qnx4_muid_t di_uid;
    qnx4_mgid_t di_gid;
    qnx4_nlink_t    di_nlink;
    __u8        di_zero[4];
    qnx4_ftype_t    di_type;
    __u8        di_status;
};

struct qnx4_link_info {
    char        dl_fname[QNX4_NAME_MAX];
    __le32      dl_inode_blk;
    __u8        dl_inode_ndx;
    __u8        dl_spare[10];
    __u8        dl_status;
};

struct qnx4_xblk {
    __le32      xblk_next_xblk;
    __le32      xblk_prev_xblk;
    __u8        xblk_num_xtnts;
    __u8        xblk_spare[3];
    __le32      xblk_num_blocks;
    qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK];
    char        xblk_signature[8];
    qnx4_xtnt_t xblk_first_xtnt;
};

struct qnx4_super_block {
    struct qnx4_inode_entry RootDir;
    struct qnx4_inode_entry Inode;
    struct qnx4_inode_entry Boot;
    struct qnx4_inode_entry AltBoot;
};

#endif