NetBSD/lib/libpuffs/flush.c

134 lines
3.5 KiB
C

/* $NetBSD: flush.c,v 1.9 2007/04/13 13:35:46 pooka Exp $ */
/*
* Copyright (c) 2007 Antti Kantee. 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. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
#include <sys/cdefs.h>
#if !defined(lint)
__RCSID("$NetBSD: flush.c,v 1.9 2007/04/13 13:35:46 pooka Exp $");
#endif /* !lint */
/*
* Flushing / invalidation routines
*/
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <puffs.h>
#include <stdio.h>
#include "puffs_priv.h"
#if 0
int
puffs_inval_namecache_node(struct puffs_usermount *pu, void *cookie,
const char *name)
{
return EOPNOTSUPP;
}
#endif
int
puffs_inval_namecache_dir(struct puffs_usermount *pu, void *cookie)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_INVAL_NAMECACHE_DIR;
pf.pf_cookie = cookie;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}
int
puffs_inval_namecache_all(struct puffs_usermount *pu)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_INVAL_NAMECACHE_ALL;
pf.pf_cookie = NULL;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}
int
puffs_inval_pagecache_node(struct puffs_usermount *pu, void *cookie)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_INVAL_PAGECACHE_NODE_RANGE;
pf.pf_cookie = cookie;
pf.pf_start = 0;
pf.pf_end = 0;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}
int
puffs_inval_pagecache_node_range(struct puffs_usermount *pu, void *cookie,
off_t start, off_t end)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_INVAL_PAGECACHE_NODE_RANGE;
pf.pf_cookie = cookie;
pf.pf_start = start;
pf.pf_end = end;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}
int
puffs_flush_pagecache_node(struct puffs_usermount *pu, void *cookie)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_FLUSH_PAGECACHE_NODE_RANGE;
pf.pf_cookie = cookie;
pf.pf_start = 0;
pf.pf_end = 0;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}
int
puffs_flush_pagecache_node_range(struct puffs_usermount *pu, void *cookie,
off_t start, off_t end)
{
struct puffs_flush pf;
pf.pf_op = PUFFS_FLUSH_PAGECACHE_NODE_RANGE;
pf.pf_cookie = cookie;
pf.pf_start = start;
pf.pf_end = end;
return ioctl(pu->pu_kargs.pa_fd, PUFFSFLUSHOP, &pf);
}