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 */ 75 struct 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 88 int fifo_close_internal(vnode_t, int, vfs_context_t, int); 89 int fifo_freespace(struct vnode *vp, long *count); 90 int 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 */ 97 int 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 123 124 int fifo_lookup(struct vnop_lookup_args *); 125 int fifo_open(struct vnop_open_args *); 126 int fifo_close(struct vnop_close_args *); 127 int fifo_read(struct vnop_read_args *); 128 int fifo_write(struct vnop_write_args *); 129 int fifo_ioctl(struct vnop_ioctl_args *); 130 int fifo_select(struct vnop_select_args *); 131 int fifo_inactive(struct vnop_inactive_args *); 132 int fifo_pathconf(struct vnop_pathconf_args *); 133 int fifo_advlock(struct vnop_advlock_args *); 134 135 #endif /* KERNEL */ 136 137 __END_DECLS 138 139 #endif /* __FIFOFS_FOFO_H__ */ 140