1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/* $NetBSD: tmpfs_fifoops.c,v 1.15 2021/07/19 01:30:25 dholland 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.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: tmpfs_fifoops.c,v 1.15 2021/07/19 01:30:25 dholland Exp $");
#include <sys/param.h>
#include <sys/vnode.h>
#include <fs/tmpfs/tmpfs.h>
#include <fs/tmpfs/tmpfs_fifoops.h>
/*
* vnode operations vector used for fifos stored in a tmpfs file system.
*/
int (**tmpfs_fifoop_p)(void *);
const struct vnodeopv_entry_desc tmpfs_fifoop_entries[] = {
{ &vop_default_desc, vn_default_error },
GENFS_FIFOOP_ENTRIES,
{ &vop_close_desc, tmpfs_fifo_close },
{ &vop_access_desc, tmpfs_access },
{ &vop_accessx_desc, genfs_accessx },
{ &vop_getattr_desc, tmpfs_getattr },
{ &vop_setattr_desc, tmpfs_setattr },
{ &vop_read_desc, tmpfs_fifo_read },
{ &vop_write_desc, tmpfs_fifo_write },
{ &vop_fcntl_desc, genfs_fcntl },
{ &vop_fsync_desc, vn_fifo_bypass },
{ &vop_inactive_desc, tmpfs_inactive },
{ &vop_reclaim_desc, tmpfs_reclaim },
{ &vop_lock_desc, genfs_lock },
{ &vop_unlock_desc, genfs_unlock },
{ &vop_strategy_desc, vn_fifo_bypass },
{ &vop_print_desc, tmpfs_print },
{ &vop_islocked_desc, genfs_islocked },
{ &vop_bwrite_desc, genfs_nullop },
{ NULL, NULL }
};
const struct vnodeopv_desc tmpfs_fifoop_opv_desc = {
&tmpfs_fifoop_p, tmpfs_fifoop_entries
};
int
tmpfs_fifo_close(void *v)
{
struct vop_close_args /* {
struct vnode *a_vp;
int a_fflag;
kauth_cred_t a_cred;
} */ *ap __unused = v;
return VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), v);
}
int
tmpfs_fifo_read(void *v)
{
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
kauth_cred_t a_cred;
} */ *ap = v;
vnode_t *vp = ap->a_vp;
tmpfs_update(vp, TMPFS_UPDATE_ATIME);
return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v);
}
int
tmpfs_fifo_write(void *v)
{
struct vop_write_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
kauth_cred_t a_cred;
} */ *ap = v;
vnode_t *vp = ap->a_vp;
tmpfs_update(vp, TMPFS_UPDATE_MTIME);
return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v);
}
|