1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software donated to Berkeley by 6 * Jan-Simon Pendry. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)fdesc.h 8.5 (Berkeley) 1/21/94 37 * 38 * $Id: fdesc.h,v 1.5 1997/02/22 09:40:14 peter Exp $ 39 */ 40 41 #ifdef KERNEL 42 struct fdescmount { 43 struct vnode *f_root; /* Root node */ 44 }; 45 46 #define FD_ROOT 2 47 #define FD_DEVFD 3 48 #define FD_STDIN 4 49 #define FD_STDOUT 5 50 #define FD_STDERR 6 51 #define FD_CTTY 7 52 #define FD_DESC 8 53 #define FD_MAX 12 54 55 typedef enum { 56 Froot, 57 Fdevfd, 58 Fdesc, 59 Flink, 60 Fctty 61 } fdntype; 62 63 struct fdescnode { 64 LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 65 struct vnode *fd_vnode; /* Back ptr to vnode */ 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_init __P((struct vfsconf *)); 77 extern int fdesc_root __P((struct mount *, struct vnode **)); 78 extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 79 #endif /* KERNEL */ 80