1 /* $OpenBSD: fdesc.h,v 1.9 2003/08/14 07:46:39 mickey Exp $ */ 2 /* $NetBSD: fdesc.h,v 1.9 1996/02/09 22:40:03 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software donated to Berkeley by 9 * Jan-Simon Pendry. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)fdesc.h 8.6 (Berkeley) 8/20/94 36 * 37 * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp # 38 */ 39 40 #ifdef _KERNEL 41 #define FD_ROOT 2 42 #define FD_DEVFD 3 43 #define FD_STDIN 4 44 #define FD_STDOUT 5 45 #define FD_STDERR 6 46 #define FD_CTTY 7 47 #define FD_DESC 8 48 #define FD_MAX 12 49 50 typedef enum { 51 Froot, 52 Fdevfd, 53 Fdesc, 54 Flink, 55 Fctty 56 } fdntype; 57 58 struct fdescnode { 59 LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 60 struct vnode *fd_vnode; /* Back ptr to vnode */ 61 fdntype fd_type; /* Type of this node */ 62 unsigned fd_fd; /* Fd to be dup'ed */ 63 char *fd_link; /* Link to fd/n */ 64 int fd_ix; /* filesystem index */ 65 }; 66 67 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 68 69 extern dev_t devctty; 70 extern int fdesc_init(struct vfsconf *); 71 extern int fdesc_root(struct mount *, struct vnode **); 72 extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **); 73 extern int (**fdesc_vnodeop_p)(void *); 74 extern const struct vfsops fdesc_vfsops; 75 #endif /* _KERNEL */ 76