1 /* $NetBSD: fdesc.h,v 1.6 1994/08/19 11:25:29 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software donated to Berkeley by 8 * Jan-Simon Pendry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp 39 * @(#)fdesc.h 8.5 (Berkeley) 1/21/94 40 */ 41 42 #ifdef KERNEL 43 struct fdescmount { 44 struct vnode *f_root; /* Root node */ 45 }; 46 47 #define FD_ROOT 2 48 #define FD_DEVFD 3 49 #define FD_STDIN 4 50 #define FD_STDOUT 5 51 #define FD_STDERR 6 52 #define FD_CTTY 7 53 #define FD_DESC 8 54 #define FD_MAX 12 55 56 typedef enum { 57 Froot, 58 Fdevfd, 59 Fdesc, 60 Flink, 61 Fctty 62 } fdntype; 63 64 struct fdescnode { 65 LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 66 struct vnode *fd_vnode; /* Back ptr to vnode */ 67 fdntype fd_type; /* Type of this node */ 68 unsigned fd_fd; /* Fd to be dup'ed */ 69 char *fd_link; /* Link to fd/n */ 70 int fd_ix; /* filesystem index */ 71 }; 72 73 #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 74 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 75 76 extern dev_t devctty; 77 extern int fdesc_init __P((void)); 78 extern int fdesc_root __P((struct mount *, struct vnode **)); 79 extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 80 extern int (**fdesc_vnodeop_p)(); 81 extern struct vfsops fdesc_vfsops; 82 #endif /* KERNEL */ 83