freebsd-dev/sys/geom/geom_vfs.h

/*-
 * Copyright (c) 2004 Poul-Henning Kamp
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD$
 */

#ifndef _GEOM_GEOM_VFS_H_
#define _GEOM_GEOM_VFS_H_

struct vnode;
struct bufobj;
struct buf;

extern struct buf_ops *g_vfs_bufops;

void g_vfs_strategy(struct bufobj *bo, struct buf *bp);
int g_vfs_open(struct vnode *vp, struct g_consumer **cpp, const char *fsname, int wr);
void g_vfs_close(struct g_consumer *cp);

#endif /* _GEOM_GEOM_VFS_H_ */
Add GEOM class "VFS" for filesystems and other buffer cache users of GEOM devices. There is nothing magic about this, it just gives a bufobj interface to GEOM. 2004-10-29 09:56:56 +00:00			`/*-`
			`* Copyright (c) 2004 Poul-Henning Kamp`
			`* 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.`
			`*`
			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.`
			`*`
			`* $FreeBSD$`
			`*/`

			`#ifndef _GEOM_GEOM_VFS_H_`
			`#define _GEOM_GEOM_VFS_H_`

			`struct vnode;`
			`struct bufobj;`
			`struct buf;`

			`extern struct buf_ops *g_vfs_bufops;`

			`void g_vfs_strategy(struct bufobj bo, struct buf bp);`
			`int g_vfs_open(struct vnode vp, struct g_consumer cpp, const char fsname, int wr);`
Remove the struct thread unuseful argument from bufobj interface. In particular following functions KPI results modified: - bufobj_invalbuf() - bufsync() and BO_SYNC() "virtual method" of the buffer objects set. Main consumers of bufobj functions are affected by this change too and, in particular, functions which changed their KPI are: - vinvalbuf() - g_vfs_close() Due to the KPI breakage, __FreeBSD_version will be bumped in a later commit. As a side note, please consider just temporary the 'curthread' argument passing to VOP_SYNC() (in bufsync()) as it will be axed out ASAP Reviewed by: kib Tested by: Giovanni Trematerra <giovanni dot trematerra at gmail dot com> 2008-10-10 21:23:50 +00:00			`void g_vfs_close(struct g_consumer *cp);`
Add GEOM class "VFS" for filesystems and other buffer cache users of GEOM devices. There is nothing magic about this, it just gives a bufobj interface to GEOM. 2004-10-29 09:56:56 +00:00
			`#endif /* _GEOM_GEOM_VFS_H_ */`