/*
 *  modified for EXT2FS support in Lites 1.1
 *
 *  Aug 1995, Godmar Back (gback@cs.utah.edu)
 *  University of Utah, Department of Computer Science
 */
/*-
 * Copyright (c) 1991, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)ffs_extern.h	8.3 (Berkeley) 4/16/94
 * $FreeBSD: src/sys/gnu/ext2fs/ext2_extern.h,v 1.22.6.1 2000/11/05 19:17:40 bde Exp $
 * $DragonFly: src/sys/vfs/gnu/ext2fs/ext2_extern.h,v 1.4 2003/08/20 09:56:31 rob Exp $
 */

#ifndef _SYS_GNU_EXT2FS_EXT2_EXTERN_H_
#define	_SYS_GNU_EXT2FS_EXT2_EXTERN_H_

struct dinode;
struct ext2_inode;
struct inode;
struct mount;
struct vfsconf;
struct vnode;

int	ext2_alloc (struct inode *,
	    daddr_t, daddr_t, int, struct ucred *, daddr_t *);
int	ext2_balloc (struct inode *,
	    daddr_t, int, struct ucred *, struct buf **, int);
int	ext2_blkatoff (struct vnode *, off_t, char **, struct buf **);
void	ext2_blkfree (struct inode *, daddr_t, long);
daddr_t	ext2_blkpref (struct inode *, daddr_t, int, daddr_t *, daddr_t);
int	ext2_bmap (struct vop_bmap_args *);
int	ext2_init (struct vfsconf *);
int	ext2_reallocblks (struct vop_reallocblks_args *);
int	ext2_reclaim (struct vop_reclaim_args *);
void	ext2_setblock (struct ext2_sb_info *, u_char *, daddr_t);
int	ext2_truncate (struct vnode *, off_t, int, struct ucred *, struct thread *);
int	ext2_update (struct vnode *, int);
int	ext2_valloc (struct vnode *, int, struct ucred *, struct vnode **);
int	ext2_vfree (struct vnode *, ino_t, int);
int 	ext2_lookup (struct vop_cachedlookup_args *);
int 	ext2_readdir (struct vop_readdir_args *);
void	ext2_print_dinode (struct dinode *);
void	ext2_print_inode (struct inode *);
int	ext2_direnter (struct inode *, 
		struct vnode *, struct componentname *);
int	ext2_dirremove (struct vnode *, struct componentname *);
int	ext2_dirrewrite (struct inode *,
		struct inode *, struct componentname *);
int	ext2_dirempty (struct inode *, ino_t, struct ucred *);
int	ext2_checkpath (struct inode *, struct inode *, struct ucred *);
struct  ext2_group_desc * get_group_desc (struct mount * , 
		unsigned int , struct buf ** );
int	ext2_group_sparse (int group);
void	ext2_discard_prealloc (struct inode *);
int	ext2_inactive (struct vop_inactive_args *);
int	ext2_new_block (struct mount * mp, unsigned long goal,
			    u_int32_t * prealloc_count,
			    u_int32_t * prealloc_block);
ino_t	ext2_new_inode (const struct inode * dir, int mode);
unsigned long ext2_count_free (struct buf *map, unsigned int numchars);
void	ext2_free_blocks (struct mount * mp, unsigned long block,
			      unsigned long count);
void	ext2_free_inode (struct inode * inode);
void	ext2_ei2di (struct ext2_inode *ei, struct dinode *di);
void	ext2_di2ei (struct dinode *di, struct ext2_inode *ei);
void	mark_buffer_dirty (struct buf *bh);

/*
 * This macro allows the ufs code to distinguish between an EXT2 and a
 * non-ext2(FFS/LFS) vnode.
 */
#define  IS_EXT2_VNODE(vp) (vp->v_mount->mnt_stat.f_type == MOUNT_EXT2FS)

extern vop_t **ext2_vnodeop_p;
extern vop_t **ext2_specop_p;
extern vop_t **ext2_fifoop_p;

#endif /* !_SYS_GNU_EXT2FS_EXT2_EXTERN_H_ */