1 | /* $NetBSD: tmpfs_fifoops.c,v 1.11 2014/07/25 08:20:52 dholland Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
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 |
9 | * 2005 program. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
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. |
19 | * |
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. |
31 | */ |
32 | |
33 | /* |
34 | * tmpfs vnode interface for named pipes. |
35 | */ |
36 | |
37 | #include <sys/cdefs.h> |
38 | __KERNEL_RCSID(0, "$NetBSD: tmpfs_fifoops.c,v 1.11 2014/07/25 08:20:52 dholland Exp $" ); |
39 | |
40 | #include <sys/param.h> |
41 | #include <sys/vnode.h> |
42 | |
43 | #include <fs/tmpfs/tmpfs.h> |
44 | #include <fs/tmpfs/tmpfs_fifoops.h> |
45 | |
46 | /* |
47 | * vnode operations vector used for fifos stored in a tmpfs file system. |
48 | */ |
49 | int (**tmpfs_fifoop_p)(void *); |
50 | const struct vnodeopv_entry_desc tmpfs_fifoop_entries[] = { |
51 | { &vop_default_desc, vn_default_error }, |
52 | { &vop_lookup_desc, tmpfs_fifo_lookup }, |
53 | { &vop_create_desc, tmpfs_fifo_create }, |
54 | { &vop_mknod_desc, tmpfs_fifo_mknod }, |
55 | { &vop_open_desc, tmpfs_fifo_open }, |
56 | { &vop_close_desc, tmpfs_fifo_close }, |
57 | { &vop_access_desc, tmpfs_fifo_access }, |
58 | { &vop_getattr_desc, tmpfs_fifo_getattr }, |
59 | { &vop_setattr_desc, tmpfs_fifo_setattr }, |
60 | { &vop_read_desc, tmpfs_fifo_read }, |
61 | { &vop_write_desc, tmpfs_fifo_write }, |
62 | { &vop_fallocate_desc, vn_fifo_bypass }, |
63 | { &vop_fdiscard_desc, vn_fifo_bypass }, |
64 | { &vop_ioctl_desc, tmpfs_fifo_ioctl }, |
65 | { &vop_fcntl_desc, tmpfs_fifo_fcntl }, |
66 | { &vop_poll_desc, tmpfs_fifo_poll }, |
67 | { &vop_kqfilter_desc, tmpfs_fifo_kqfilter }, |
68 | { &vop_revoke_desc, tmpfs_fifo_revoke }, |
69 | { &vop_mmap_desc, tmpfs_fifo_mmap }, |
70 | { &vop_fsync_desc, tmpfs_fifo_fsync }, |
71 | { &vop_seek_desc, tmpfs_fifo_seek }, |
72 | { &vop_remove_desc, tmpfs_fifo_remove }, |
73 | { &vop_link_desc, tmpfs_fifo_link }, |
74 | { &vop_rename_desc, tmpfs_fifo_rename }, |
75 | { &vop_mkdir_desc, tmpfs_fifo_mkdir }, |
76 | { &vop_rmdir_desc, tmpfs_fifo_rmdir }, |
77 | { &vop_symlink_desc, tmpfs_fifo_symlink }, |
78 | { &vop_readdir_desc, tmpfs_fifo_readdir }, |
79 | { &vop_readlink_desc, tmpfs_fifo_readlink }, |
80 | { &vop_abortop_desc, tmpfs_fifo_abortop }, |
81 | { &vop_inactive_desc, tmpfs_fifo_inactive }, |
82 | { &vop_reclaim_desc, tmpfs_fifo_reclaim }, |
83 | { &vop_lock_desc, tmpfs_fifo_lock }, |
84 | { &vop_unlock_desc, tmpfs_fifo_unlock }, |
85 | { &vop_bmap_desc, tmpfs_fifo_bmap }, |
86 | { &vop_strategy_desc, tmpfs_fifo_strategy }, |
87 | { &vop_print_desc, tmpfs_fifo_print }, |
88 | { &vop_pathconf_desc, tmpfs_fifo_pathconf }, |
89 | { &vop_islocked_desc, tmpfs_fifo_islocked }, |
90 | { &vop_advlock_desc, tmpfs_fifo_advlock }, |
91 | { &vop_bwrite_desc, tmpfs_fifo_bwrite }, |
92 | { &vop_getpages_desc, tmpfs_fifo_getpages }, |
93 | { &vop_putpages_desc, tmpfs_fifo_putpages }, |
94 | { NULL, NULL } |
95 | }; |
96 | |
97 | const struct vnodeopv_desc tmpfs_fifoop_opv_desc = { |
98 | &tmpfs_fifoop_p, tmpfs_fifoop_entries |
99 | }; |
100 | |
101 | int |
102 | tmpfs_fifo_close(void *v) |
103 | { |
104 | struct vop_close_args /* { |
105 | struct vnode *a_vp; |
106 | int a_fflag; |
107 | kauth_cred_t a_cred; |
108 | } */ *ap __unused = v; |
109 | |
110 | return VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), v); |
111 | } |
112 | |
113 | int |
114 | tmpfs_fifo_read(void *v) |
115 | { |
116 | struct vop_read_args /* { |
117 | struct vnode *a_vp; |
118 | struct uio *a_uio; |
119 | int a_ioflag; |
120 | kauth_cred_t a_cred; |
121 | } */ *ap = v; |
122 | vnode_t *vp = ap->a_vp; |
123 | |
124 | tmpfs_update(vp, TMPFS_UPDATE_ATIME); |
125 | return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); |
126 | } |
127 | |
128 | int |
129 | tmpfs_fifo_write(void *v) |
130 | { |
131 | struct vop_write_args /* { |
132 | struct vnode *a_vp; |
133 | struct uio *a_uio; |
134 | int a_ioflag; |
135 | kauth_cred_t a_cred; |
136 | } */ *ap = v; |
137 | vnode_t *vp = ap->a_vp; |
138 | |
139 | tmpfs_update(vp, TMPFS_UPDATE_MTIME); |
140 | return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); |
141 | } |
142 | |