bsd/miscfs/fifofs/fifo.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1991, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)fifo.h      8.3 (Berkeley) 8/10/94
  56  */
  57 #ifndef __FIFOFS_FOFO_H__
  58 #define __FIFOFS_FOFO_H__
  59
  60 #ifdef BSD_KERNEL_PRIVATE
  61
  62
  63 /*
  64  * This structure is associated with the FIFO vnode and stores
  65  * the state associated with the FIFO.
  66  */
  67 struct fifoinfo {
  68         unsigned int    fi_flags;
  69     struct socket   *fi_readsock;
  70     struct socket   *fi_writesock;
  71     long        fi_readers;
  72     long        fi_writers;
  73         unsigned int    fi_count;
  74 };
  75
  76 #define FIFO_INCREATE   1
  77 #define FIFO_CREATEWAIT 2
  78 #define FIFO_CREATED    4
  79
  80
  81 /*
  82  * Prototypes for fifo operations on vnodes.
  83  */
  84 int     fifo_ebadf(void *);
  85
  86 int     fifo_lookup (struct vnop_lookup_args *);
  87 #define fifo_create (int (*) (struct  vnop_create_args *))err_create
  88 #define fifo_mknod (int (*) (struct  vnop_mknod_args *))err_mknod
  89 int     fifo_open (struct vnop_open_args *);
  90 int     fifo_close (struct vnop_close_args *);
  91 int     fifo_close_internal (vnode_t, int, vfs_context_t, int);
  92 #define fifo_access (int (*) (struct  vnop_access_args *))fifo_ebadf
  93 #define fifo_getattr (int (*) (struct  vnop_getattr_args *))fifo_ebadf
  94 #define fifo_setattr (int (*) (struct  vnop_setattr_args *))fifo_ebadf
  95 int     fifo_read (struct vnop_read_args *);
  96 int     fifo_write (struct vnop_write_args *);
  97 int     fifo_ioctl (struct vnop_ioctl_args *);
  98 int     fifo_select (struct vnop_select_args *);
  99 #define fifo_revoke nop_revoke
 100 #define fifo_mmap (int (*) (struct  vnop_mmap_args *))err_mmap
 101 #define fifo_fsync (int (*) (struct  vnop_fsync_args *))nullop
 102 #define fifo_remove (int (*) (struct  vnop_remove_args *))err_remove
 103 #define fifo_link (int (*) (struct  vnop_link_args *))err_link
 104 #define fifo_rename (int (*) (struct  vnop_rename_args *))err_rename
 105 #define fifo_mkdir (int (*) (struct  vnop_mkdir_args *))err_mkdir
 106 #define fifo_rmdir (int (*) (struct  vnop_rmdir_args *))err_rmdir
 107 #define fifo_symlink (int (*) (struct  vnop_symlink_args *))err_symlink
 108 #define fifo_readdir (int (*) (struct  vnop_readdir_args *))err_readdir
 109 #define fifo_readlink (int (*) (struct  vnop_readlink_args *))err_readlink
 110 int     fifo_inactive (struct  vnop_inactive_args *);
 111 #define fifo_reclaim (int (*) (struct  vnop_reclaim_args *))nullop
 112 #define fifo_strategy (int (*) (struct  vnop_strategy_args *))err_strategy
 113 int     fifo_pathconf (struct vnop_pathconf_args *);
 114 int     fifo_advlock (struct vnop_advlock_args *);
 115 #define fifo_valloc (int (*) (struct  vnop_valloc_args *))err_valloc
 116 #define fifo_vfree (int (*) (struct  vnop_vfree_args *))err_vfree
 117 #define fifo_bwrite (int (*) (struct  vnop_bwrite_args *))nullop
 118 #define fifo_blktooff (int (*) (struct vnop_blktooff_args *))err_blktooff
 119
 120 #endif /* BSD_KERNEL_PRIVATE */
 121
 122 #endif /* __FIFOFS_FOFO_H__ */