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/*

 *  Name                         : qnx4_fs.h

 *  Author                       : Richard Frowijn

 *  Function                     : qnx4 global filesystem definitions

 *  Version                      : 1.0.2

 *  Last modified                : 2000-01-31

 *

 *  History                      : 23-03-1998 created

 */

#ifndef _LINUX_QNX4_FS_H

#define _LINUX_QNX4_FS_H

#include <linux/qnxtypes.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_SUPER_MAGIC        0x002f  /* qnx4 fs detection */

#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;

        __u32           di_xblk;

        __s32           di_ftime;

        __s32           di_mtime;

        __s32           di_atime;

        __s32           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];

        __u32           dl_inode_blk;

        __u8            dl_inode_ndx;

        __u8            dl_spare[10];

        __u8            dl_status;

};

struct qnx4_xblk {

        __u32           xblk_next_xblk;

        __u32           xblk_prev_xblk;

        __u8            xblk_num_xtnts;

        __u8            xblk_spare[3];

        __s32           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;

};

#ifdef __KERNEL__

#define QNX4_DEBUG 0

#if QNX4_DEBUG

#define QNX4DEBUG(X) printk X

#else

#define QNX4DEBUG(X) (void) 0

#endif

extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry);

extern unsigned long qnx4_count_free_blocks(struct super_block *sb);

extern unsigned long qnx4_block_map(struct inode *inode, long iblock);

extern struct buffer_head *qnx4_getblk(struct inode *, int, int);

extern struct buffer_head *qnx4_bread(struct inode *, int, int);

extern int qnx4_create(struct inode *dir, struct dentry *dentry, int mode);

extern struct inode_operations qnx4_file_inode_operations;

extern struct inode_operations qnx4_dir_inode_operations;

extern struct file_operations qnx4_file_operations;

extern struct file_operations qnx4_dir_operations;

extern int qnx4_is_free(struct super_block *sb, long block);

extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy);

extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode);

extern void qnx4_truncate(struct inode *inode);

extern void qnx4_free_inode(struct inode *inode);

extern int qnx4_unlink(struct inode *dir, struct dentry *dentry);

extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry);

extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int);

extern int qnx4_sync_inode(struct inode *inode);

extern int qnx4_get_block(struct inode *inode, long iblock, struct buffer_head *bh, int create);

#endif                          /* __KERNEL__ */

#endif