2001-09-16 02:38:40 +04:00
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/* $NetBSD: genfs_node.h,v 1.2 2001/09/15 22:38:40 chs Exp $ */
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2001-09-16 01:33:05 +04:00
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/*
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* Copyright (c) 2001 Chuck Silvers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Chuck Silvers.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MISCFS_GENFS_GENFS_NODE_H_
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#define _MISCFS_GENFS_GENFS_NODE_H_
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2001-09-16 02:38:40 +04:00
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struct vm_page;
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2001-09-16 01:33:05 +04:00
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struct genfs_ops {
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void (*gop_size)(struct vnode *, off_t, off_t *);
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int (*gop_alloc)(struct vnode *, off_t, off_t, int, struct ucred *);
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int (*gop_write)(struct vnode *, struct vm_page **, int, int);
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};
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#define GOP_SIZE(vp, size, eobp) \
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(*VTOG(vp)->g_op->gop_size)((vp), (size), (eobp))
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#define GOP_ALLOC(vp, off, len, flags, cred) \
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(*VTOG(vp)->g_op->gop_alloc)((vp), (off), (len), (flags), (cred))
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#define GOP_WRITE(vp, pgs, npages, flags) \
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(*VTOG(vp)->g_op->gop_write)((vp), (pgs), (npages), (flags))
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struct genfs_node {
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struct genfs_ops *g_op; /* ops vector */
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struct lock g_glock; /* getpages lock */
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};
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#define VTOG(vp) ((struct genfs_node *)(vp)->v_data)
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void genfs_size(struct vnode *, off_t, off_t *);
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void genfs_node_init(struct vnode *, struct genfs_ops *);
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int genfs_gop_write(struct vnode *, struct vm_page **, int, int);
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#endif /* _MISCFS_GENFS_GENFS_NODE_H_ */
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