xnu-344.23.tar.gz

[apple/xnu.git] / bsd / ufs / ffs / ffs_extern.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */

/*-
 * 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	8.6 (Berkeley) 3/30/95
 */
#ifndef __UFS_FFS_FFS_EXTERN_H__
#define __UFS_FFS_FFS_EXTERN_H__

#include <sys/appleapiopts.h>

#ifdef __APPLE_API_UNSTABLE
/*
 * Sysctl values for the fast filesystem.
 */
#define FFS_CLUSTERREAD		1	/* cluster reading enabled */
#define FFS_CLUSTERWRITE	2	/* cluster writing enabled */
#define FFS_REALLOCBLKS		3	/* block reallocation enabled */
#define FFS_ASYNCFREE		4	/* asynchronous block freeing enabled */
#define	FFS_MAXID		5	/* number of valid ffs ids */

#define FFS_NAMES { \
	{ 0, 0 }, \
	{ "doclusterread", CTLTYPE_INT }, \
	{ "doclusterwrite", CTLTYPE_INT }, \
	{ "doreallocblks", CTLTYPE_INT }, \
	{ "doasyncfree", CTLTYPE_INT }, \
}
#endif /* __APPLE_API_UNSTABLE */

struct buf;
struct fid;
struct fs;
struct inode;
struct mount;
struct nameidata;
struct proc;
struct statfs;
struct timeval;
struct ucred;
struct uio;
struct vnode;
struct mbuf;
struct vfsconf;

#ifdef __APPLE_API_PRIVATE
__BEGIN_DECLS
int	ffs_alloc __P((struct inode *,
	    ufs_daddr_t, ufs_daddr_t, int, struct ucred *, ufs_daddr_t *));
int	ffs_balloc __P((struct inode *,
	    ufs_daddr_t, int, struct ucred *, struct buf **, int, int *));
int	ffs_blkatoff __P((struct vop_blkatoff_args *));
int	ffs_blkfree __P((struct inode *, ufs_daddr_t, long));
ufs_daddr_t ffs_blkpref __P((struct inode *, ufs_daddr_t, int, ufs_daddr_t *));
int	ffs_bmap __P((struct vop_bmap_args *));
void	ffs_clrblock __P((struct fs *, u_char *, ufs_daddr_t));
int	ffs_fhtovp __P((struct mount *, struct fid *, struct mbuf *,
	    struct vnode **, int *, struct ucred **));
void	ffs_fragacct __P((struct fs *, int, int32_t [], int));
int	ffs_fsync __P((struct vop_fsync_args *));
int	ffs_init __P((struct vfsconf *));
int	ffs_isblock __P((struct fs *, u_char *, ufs_daddr_t));
int	ffs_mount __P((struct mount *,
	    char *, caddr_t, struct nameidata *, struct proc *));
int	ffs_mountfs __P((struct vnode *, struct mount *, struct proc *));
int	ffs_mountroot __P((void));
int	ffs_read __P((struct vop_read_args *));
int	ffs_reallocblks __P((struct vop_reallocblks_args *));
int	ffs_realloccg __P((struct inode *,
	    ufs_daddr_t, ufs_daddr_t, int, int, struct ucred *, struct buf **));
int	ffs_reclaim __P((struct vop_reclaim_args *));
void	ffs_setblock __P((struct fs *, u_char *, ufs_daddr_t));
int	ffs_statfs __P((struct mount *, struct statfs *, struct proc *));
int	ffs_sync __P((struct mount *, int, struct ucred *, struct proc *));
int	ffs_sysctl __P((int *, u_int, void *, size_t *, void *, size_t,
	    struct proc *));
int	ffs_truncate __P((struct vop_truncate_args *));
int	ffs_unmount __P((struct mount *, int, struct proc *));
int	ffs_update __P((struct vop_update_args *));
int	ffs_valloc __P((struct vop_valloc_args *));
int	ffs_vfree __P((struct vop_vfree_args *));
int	ffs_vget __P((struct mount *, ino_t, struct vnode **));
int	ffs_vptofh __P((struct vnode *, struct fid *));
int	ffs_write __P((struct vop_write_args *));
int ffs_pagein __P((struct vop_pagein_args *));
int ffs_pageout __P((struct vop_pageout_args *));
int ffs_blktooff __P((struct vop_blktooff_args *));
int ffs_offtoblk __P((struct vop_offtoblk_args *));

#if DIAGNOSTIC
void	ffs_checkoverlap __P((struct buf *, struct inode *));
#endif
__END_DECLS

extern int (**ffs_vnodeop_p)(void *);
extern int (**ffs_specop_p)(void *);
#if FIFO
extern int (**ffs_fifoop_p)(void *);
#define FFS_FIFOOPS ffs_fifoop_p
#else
#define FFS_FIFOOPS NULL
#endif

#endif /* __APPLE_API_PRIVATE */
#endif /* __UFS_FFS_FFS_EXTERN_H__ */