1 /* $NetBSD: fdesc.h,v 1.16 2004/05/20 06:34:30 atatat 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)fdesc.h 8.8 (Berkeley) 4/3/95 35 * 36 * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp # 37 */ 38 39 #ifdef _KERNEL 40 struct fdescmount { 41 struct vnode *f_root; /* Root node */ 42 }; 43 44 #define FD_ROOT 2 45 #define FD_DEVFD 3 46 #define FD_STDIN 4 47 #define FD_STDOUT 5 48 #define FD_STDERR 6 49 #define FD_CTTY 7 50 #define FD_DESC 8 51 #define FD_MAX 12 52 53 typedef enum { 54 Froot, 55 Fdevfd, 56 Fdesc, 57 Flink, 58 Fctty 59 } fdntype; 60 61 struct fdescnode { 62 LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 63 struct vnode *fd_vnode; /* Back ptr to vnode */ 64 fdntype fd_type; /* Type of this node */ 65 unsigned fd_fd; /* Fd to be dup'ed */ 66 char *fd_link; /* Link to fd/n */ 67 int fd_ix; /* filesystem index */ 68 }; 69 70 #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 71 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 72 73 extern dev_t devctty; 74 extern void fdesc_init __P((void)); 75 extern void fdesc_done __P((void)); 76 extern int fdesc_root __P((struct mount *, struct vnode **)); 77 extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 78 extern int (**fdesc_vnodeop_p) __P((void *)); 79 extern struct vfsops fdesc_vfsops; 80 81 #ifdef SYSCTL_SETUP_PROTO 82 SYSCTL_SETUP_PROTO(sysctl_vfs_fdesc_setup); 83 #endif /* SYSCTL_SETUP_PROTO */ 84 #endif /* _KERNEL */ 85