1 /* $NetBSD: flush.c,v 1.16 2008/08/12 19:44:39 pooka Exp $ */
4 * Copyright (c) 2007 Antti Kantee. All Rights Reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * Flushing / invalidation routines
32 #include <sys/types.h>
41 #include "puffs_priv.h"
45 puffs_inval_namecache_node(struct puffs_usermount *pu, puffs_cookie_t cookie,
54 doflush(struct puffs_usermount *pu, puffs_cookie_t cookie, int op,
55 off_t start, off_t end)
57 struct puffs_framebuf *pb;
58 struct puffs_flush *pf;
62 pb = puffs_framebuf_make();
66 winlen = sizeof(struct puffs_flush);
67 if ((rv = puffs_framebuf_getwindow(pb, 0, (void *)&pf, &winlen)) == -1)
69 assert(winlen == sizeof(struct puffs_flush));
71 pf->pf_req.preq_buflen = sizeof(struct puffs_flush);
72 pf->pf_req.preq_opclass = PUFFSOP_FLUSH;
73 pf->pf_req.preq_id = puffs__nextreq(pu);
76 pf->pf_cookie = cookie;
80 rv = puffs_framev_enqueue_cc(puffs_cc_getcc(pu),
81 puffs_getselectable(pu), pb, 0);
84 puffs_framebuf_destroy(pb);
89 puffs_inval_namecache_dir(struct puffs_usermount *pu, puffs_cookie_t cookie)
92 return doflush(pu, cookie, PUFFS_INVAL_NAMECACHE_DIR, 0, 0);
96 puffs_inval_namecache_all(struct puffs_usermount *pu)
99 return doflush(pu, NULL, PUFFS_INVAL_NAMECACHE_ALL, 0, 0);
103 puffs_inval_pagecache_node(struct puffs_usermount *pu, puffs_cookie_t cookie)
106 return doflush(pu, cookie, PUFFS_INVAL_PAGECACHE_NODE_RANGE, 0, 0);
110 puffs_inval_pagecache_node_range(struct puffs_usermount *pu,
111 puffs_cookie_t cookie, off_t start, off_t end)
114 return doflush(pu, cookie, PUFFS_INVAL_PAGECACHE_NODE_RANGE, start,end);
118 puffs_flush_pagecache_node(struct puffs_usermount *pu, puffs_cookie_t cookie)
121 return doflush(pu, cookie, PUFFS_FLUSH_PAGECACHE_NODE_RANGE, 0, 0);
125 puffs_flush_pagecache_node_range(struct puffs_usermount *pu,
126 puffs_cookie_t cookie, off_t start, off_t end)
129 return doflush(pu, cookie, PUFFS_FLUSH_PAGECACHE_NODE_RANGE, start,end);