File:  [DragonFly] / src / sys / vfs / isofs / cd9660 / cd9660_mount.h
Revision 1.3: download - view: text, annotated - select for diffs
Tue Aug 17 18:57:33 2004 UTC (9 years, 8 months ago) by dillon
Branches: MAIN
CVS tags: HEAD, DragonFly_Stable, DragonFly_Snap29Sep2004, DragonFly_Snap13Sep2004, DragonFly_RELEASE_2_0_Slip, DragonFly_RELEASE_2_0, DragonFly_RELEASE_1_8_Slip, DragonFly_RELEASE_1_8, DragonFly_RELEASE_1_6_Slip, DragonFly_RELEASE_1_6, DragonFly_RELEASE_1_4_Slip, DragonFly_RELEASE_1_4, DragonFly_RELEASE_1_2_Slip, DragonFly_RELEASE_1_2, DragonFly_RELEASE_1_12_Slip, DragonFly_RELEASE_1_12, DragonFly_RELEASE_1_10_Slip, DragonFly_RELEASE_1_10, DragonFly_Preview
VFS messaging/interfacing work stage 2/99.  This stage retools the vnode ops
vector dispatch, making the vop_ops a per-mount structure rather then a
per-filesystem structure.  Filesystem mount code, typically in blah_vfsops.c,
must now register various vop_ops pointers in the struct mount to compile
its VOP operations set.

This change will allow us to begin adding per-mount hooks to VFSes to support
things like kernel-level journaling, various forms of cache coherency
management, and so forth.

In addition, the vop_*() calls now require a struct vop_ops pointer as the
first argument instead of a vnode pointer (note: in this commit the VOP_*()
macros currently just pull the vop_ops pointer from the vnode in order to
call the vop_*() procedures).  This change is intended to allow us to divorce
ourselves from the requirement that a vnode pointer always be part of a VOP
call.  In particular, this will allow namespace based routines such as
remove(), mkdir(), stat(), and so forth to pass namecache pointers rather then
locked vnodes and is a very important precursor to the goal of using the
namecache for namespace locking.

/*
 * Copyright (c) 1995
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley
 * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
 * Support code is derived from software contributed to Berkeley
 * by Atsushi Murai (amurai@spec.co.jp).
 *
 * 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.
 *
 *	@(#)cd9660_mount.h	8.1 (Berkeley) 5/24/95
 * $FreeBSD: src/sys/isofs/cd9660/cd9660_mount.h,v 1.3.2.2 2001/03/14 12:03:50 bp Exp $
 * $DragonFly: src/sys/vfs/isofs/cd9660/cd9660_mount.h,v 1.3 2004/08/17 18:57:33 dillon Exp $
 */

/*
 * Arguments to mount ISO 9660 filesystems.
 */
struct iso_args {
	char	*fspec;			/* block special device to mount */
	struct	export_args export;	/* network export info */
	int	flags;			/* mounting flags, see below */
	int	ssector;		/* starting sector, 0 for 1st session */
};
#define	ISOFSMNT_NORRIP	0x00000001	/* disable Rock Ridge Ext.*/
#define	ISOFSMNT_GENS	0x00000002	/* enable generation numbers */
#define	ISOFSMNT_EXTATT	0x00000004	/* enable extended attributes */
#define ISOFSMNT_NOJOLIET 0x00000008	/* disable Joliet Ext.*/
#define ISOFSMNT_BROKENJOLIET 0x00000010/* allow broken Joliet disks */