1 /* 2 * Copyright (c) 1992 The Regents of the University of California 3 * Copyright (c) 1990, 1992 Jan-Simon Pendry 4 * All rights reserved. 5 * 6 * This code is derived from software donated to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * From: 38 * Id: fdesc.h,v 4.1 1993/12/17 10:47:45 jsp Rel 39 * 40 * $Id: fdesc.h,v 1.3 1994/01/05 09:00:57 cgd Exp $ 41 */ 42 43 #ifdef KERNEL 44 struct fdescmount { 45 struct vnode *f_root; /* Root node */ 46 }; 47 48 #define FD_ROOT 2 49 #define FD_DEVFD 3 50 #define FD_STDIN 4 51 #define FD_STDOUT 5 52 #define FD_STDERR 6 53 #define FD_CTTY 7 54 #define FD_DESC 8 55 #define FD_MAX 12 56 57 typedef enum { 58 Froot, 59 Fdevfd, 60 Fdesc, 61 Flink, 62 Fctty 63 } fdntype; 64 65 struct fdescnode { 66 fdntype fd_type; /* Type of this node */ 67 unsigned fd_fd; /* Fd to be dup'ed */ 68 char *fd_link; /* Link to fd/n */ 69 int fd_ix; /* filesystem index */ 70 }; 71 72 #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 73 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 74 75 extern dev_t devctty; 76 extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 77 extern struct vnodeops fdesc_vnodeops; 78 extern struct vfsops fdesc_vfsops; 79 #endif /* KERNEL */ 80