1/*
2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1991, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by the University of
44 * California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)fifo.h 8.3 (Berkeley) 8/10/94
62 */
63#ifndef __FIFOFS_FOFO_H__
64#define __FIFOFS_FOFO_H__
65
66__BEGIN_DECLS
67
68#ifdef BSD_KERNEL_PRIVATE
69
70
71/*
72 * This structure is associated with the FIFO vnode and stores
73 * the state associated with the FIFO.
74 */
75struct fifoinfo {
76 unsigned int fi_flags;
77 struct socket *fi_readsock;
78 struct socket *fi_writesock;
79 long fi_readers;
80 long fi_writers;
81 unsigned int fi_count;
82};
83
84#define FIFO_INCREATE 1
85#define FIFO_CREATEWAIT 2
86#define FIFO_CREATED 4
87
88int fifo_close_internal(vnode_t, int, vfs_context_t, int);
89int fifo_freespace(struct vnode *vp, long *count);
90int fifo_charcount(struct vnode *vp, int *count);
91
92#endif /* BSD_KERNEL_PRIVATE */
93#ifdef KERNEL
94/*
95 * Prototypes for fifo operations on vnodes.
96 */
97int fifo_ebadf(void *);
98
99#define fifo_nullop (void (*)(void))nullop
100
101#define fifo_create (int (*) (struct vnop_create_args *))err_create
102#define fifo_mknod (int (*) (struct vnop_mknod_args *))err_mknod
103#define fifo_access (int (*) (struct vnop_access_args *))fifo_ebadf
104#define fifo_getattr (int (*) (struct vnop_getattr_args *))fifo_ebadf
105#define fifo_setattr (int (*) (struct vnop_setattr_args *))fifo_ebadf
106#define fifo_revoke nop_revoke
107#define fifo_mmap (int (*) (struct vnop_mmap_args *))err_mmap
108#define fifo_fsync (int (*) (struct vnop_fsync_args *))fifo_nullop
109#define fifo_remove (int (*) (struct vnop_remove_args *))err_remove
110#define fifo_link (int (*) (struct vnop_link_args *))err_link
111#define fifo_rename (int (*) (struct vnop_rename_args *))err_rename
112#define fifo_mkdir (int (*) (struct vnop_mkdir_args *))err_mkdir
113#define fifo_rmdir (int (*) (struct vnop_rmdir_args *))err_rmdir
114#define fifo_symlink (int (*) (struct vnop_symlink_args *))err_symlink
115#define fifo_readdir (int (*) (struct vnop_readdir_args *))err_readdir
116#define fifo_readlink (int (*) (struct vnop_readlink_args *))err_readlink
117#define fifo_reclaim (int (*) (struct vnop_reclaim_args *))fifo_nullop
118#define fifo_strategy (int (*) (struct vnop_strategy_args *))err_strategy
119#define fifo_valloc (int (*) (struct vnop_valloc_args *))err_valloc
120#define fifo_vfree (int (*) (struct vnop_vfree_args *))err_vfree
121#define fifo_bwrite (int (*) (struct vnop_bwrite_args *))fifo_nullop
122#define fifo_blktooff (int (*) (struct vnop_blktooff_args *))err_blktooff
123
124int fifo_lookup(struct vnop_lookup_args *);
125int fifo_open(struct vnop_open_args *);
126int fifo_close(struct vnop_close_args *);
127int fifo_read(struct vnop_read_args *);
128int fifo_write(struct vnop_write_args *);
129int fifo_ioctl(struct vnop_ioctl_args *);
130int fifo_select(struct vnop_select_args *);
131int fifo_inactive(struct vnop_inactive_args *);
132int fifo_pathconf(struct vnop_pathconf_args *);
133int fifo_advlock(struct vnop_advlock_args *);
134
135#endif /* KERNEL */
136
137__END_DECLS
138
139#endif /* __FIFOFS_FOFO_H__ */
140