1 /* $NetBSD: fdesc.h,v 1.11 2000/03/16 18:08:23 jdolecek 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 * @(#)fdesc.h 8.8 (Berkeley) 4/3/95 39 * 40 * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp 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 LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 67 struct vnode *fd_vnode; /* Back ptr to vnode */ 68 fdntype fd_type; /* Type of this node */ 69 unsigned fd_fd; /* Fd to be dup'ed */ 70 char *fd_link; /* Link to fd/n */ 71 int fd_ix; /* filesystem index */ 72 }; 73 74 #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 75 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 76 77 extern dev_t devctty; 78 extern void fdesc_init __P((void)); 79 extern void fdesc_done __P((void)); 80 extern int fdesc_root __P((struct mount *, struct vnode **)); 81 extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 82 extern int (**fdesc_vnodeop_p) __P((void *)); 83 extern struct vfsops fdesc_vfsops; 84 #endif /* _KERNEL */ 85