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/* $NetBSD: tmpfs_fifoops.c,v 1.5 2005/12/11 12:24:29 christos Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Julio M. Merino Vidal, developed as part of Google's Summer of Code
* 2005 program.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* tmpfs vnode interface for named pipes.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/filedesc.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <fs/tmpfs/tmpfs.h>
#include <fs/tmpfs/tmpfs_fifoops.h>
#include <fs/tmpfs/tmpfs_vnops.h>
/* --------------------------------------------------------------------- */
/*
* vnode operations vector used for fifos stored in a tmpfs file system.
*/
struct vop_vector tmpfs_fifoop_entries = {
.vop_default = &fifo_specops,
.vop_close = tmpfs_fifo_close,
.vop_reclaim = tmpfs_reclaim,
.vop_access = tmpfs_access,
.vop_getattr = tmpfs_getattr,
.vop_setattr = tmpfs_setattr,
.vop_kqfilter = tmpfs_fifo_kqfilter,
};
int
tmpfs_fifo_kqfilter(struct vop_kqfilter_args *ap)
{
struct vnode *vp;
struct tmpfs_node *node;
vp = ap->a_vp;
node = VP_TO_TMPFS_NODE(vp);
switch (ap->a_kn->kn_filter){
case EVFILT_READ:
node->tn_status |= TMPFS_NODE_ACCESSED;
break;
case EVFILT_WRITE:
node->tn_status |= TMPFS_NODE_MODIFIED;
break;
}
return fifo_specops.vop_kqfilter(ap);
}
/* --------------------------------------------------------------------- */
int
tmpfs_fifo_close(struct vop_close_args *v)
{
struct tmpfs_node *node;
node = VP_TO_TMPFS_NODE(v->a_vp);
node->tn_status |= TMPFS_NODE_ACCESSED;
tmpfs_update(v->a_vp);
return fifo_specops.vop_close(v);
}
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