1 /* $NetBSD: tmpfs_fifoops.c,v 1.5 2005/12/11 12:24:29 christos Exp $ */
4 * Copyright (c) 2005 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
34 * tmpfs vnode interface for named pipes.
37 #include <sys/kernel.h>
38 #include <sys/param.h>
39 #include <sys/filedesc.h>
41 #include <sys/vnode.h>
44 #include <vm/vm_object.h>
46 #include <vfs/fifofs/fifo.h>
47 #include <vfs/tmpfs/tmpfs.h>
48 #include <vfs/tmpfs/tmpfs_vnops.h>
50 /* --------------------------------------------------------------------- */
53 tmpfs_fifo_kqfilter(struct vop_kqfilter_args
*ap
)
56 struct tmpfs_node
*node
;
59 node
= VP_TO_TMPFS_NODE(vp
);
61 switch (ap
->a_kn
->kn_filter
){
63 node
->tn_status
|= TMPFS_NODE_ACCESSED
;
66 node
->tn_status
|= TMPFS_NODE_MODIFIED
;
70 return fifo_vnode_vops
.vop_kqfilter(ap
);
73 /* --------------------------------------------------------------------- */
76 tmpfs_fifo_close(struct vop_close_args
*ap
)
78 struct tmpfs_node
*node
;
79 node
= VP_TO_TMPFS_NODE(ap
->a_vp
);
80 node
->tn_status
|= TMPFS_NODE_ACCESSED
;
82 tmpfs_update(ap
->a_vp
);
83 return fifo_vnode_vops
.vop_close(ap
);
87 * vnode operations vector used for fifos stored in a tmpfs file system.
89 struct vop_ops tmpfs_fifo_vops
= {
90 .vop_default
= fifo_vnoperate
,
91 .vop_close
= tmpfs_fifo_close
,
92 .vop_reclaim
= tmpfs_reclaim
,
93 .vop_access
= tmpfs_access
,
94 .vop_getattr
= tmpfs_getattr
,
95 .vop_setattr
= tmpfs_setattr
,
96 .vop_kqfilter
= tmpfs_fifo_kqfilter
,