/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_FILEP_H
#define _SYS_FILEP_H

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/fs/ufs_fsdir.h>
#include <sys/fs/ufs_fs.h>
#include <sys/fs/ufs_inode.h>

/*
 *  These structs should be invisible to the caller of
 *  the user-level routines
 */
typedef struct dev_ident {      /* device identifier block */
        char            *di_desc;
        int             di_dcookie;
        char            di_taken;
        union {
                struct  fs      di_fs;
                char    dummy[SBSIZE];
        }               un_fs;
} devid_t;

/*
 * Borrowed bits from i_flag
 */
#define FI_CACHED               0x100000
#define FI_PARTIAL_CACHE        0x200000
#define FI_NOCACHE              0x400000

#define FI_COMPRESSED           0x8             /* File compressed in ramdisk */
#define DECOMP_BUFSIZE          (512 * 1024)    /* size of decompress buffer */

typedef struct file_ident {     /* file identifier block */
        uint_t          fi_filedes;
        char            *fi_path;
        daddr_t         fi_blocknum;
        uint_t          fi_count;
        off_t           fi_offset;
        caddr_t         fi_memp;
        char            fi_taken;
        char            fi_flags;
        devid_t         *fi_devp;
        char            fi_buf[MAXBSIZE];
        int             (*fi_getblock)(struct file_ident *);
        struct  inode   *fi_inode;
        struct file_ident *fi_forw;
        struct file_ident *fi_back;
        off_t           fi_cfoff;               /* compressed file offset */
        caddr_t         fi_dcscrbuf;            /* decomp scratch buffer */
        size_t          fi_dcscrused;           /* used bytes in scratch buf */
        struct z_stream_s *fi_dcstream;         /* decompression stream */
}  fileid_t;

extern int diskread(fileid_t *);

#ifdef __cplusplus
}
#endif

#endif  /* _SYS_FILEP_H */