1df8bae1dSRodney W. Grimes /* 2df8bae1dSRodney W. Grimes * Copyright (c) 1992, 1993 3df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 4df8bae1dSRodney W. Grimes * 5df8bae1dSRodney W. Grimes * This code is derived from software donated to Berkeley by 6df8bae1dSRodney W. Grimes * Jan-Simon Pendry. 7df8bae1dSRodney W. Grimes * 8df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 9df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 10df8bae1dSRodney W. Grimes * are met: 11df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 12df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 13df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 14df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 15df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 16df8bae1dSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 17df8bae1dSRodney W. Grimes * must display the following acknowledgement: 18df8bae1dSRodney W. Grimes * This product includes software developed by the University of 19df8bae1dSRodney W. Grimes * California, Berkeley and its contributors. 20df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 21df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 22df8bae1dSRodney W. Grimes * without specific prior written permission. 23df8bae1dSRodney W. Grimes * 24df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34df8bae1dSRodney W. Grimes * SUCH DAMAGE. 35df8bae1dSRodney W. Grimes * 36df8bae1dSRodney W. Grimes * @(#)fdesc.h 8.5 (Berkeley) 1/21/94 37df8bae1dSRodney W. Grimes * 38c3aac50fSPeter Wemm * $FreeBSD$ 39df8bae1dSRodney W. Grimes */ 40df8bae1dSRodney W. Grimes 41c4473420SPeter Wemm #ifdef _KERNEL 42df8bae1dSRodney W. Grimes struct fdescmount { 43df8bae1dSRodney W. Grimes struct vnode *f_root; /* Root node */ 44df8bae1dSRodney W. Grimes }; 45df8bae1dSRodney W. Grimes 4638edb6a3SChris Costello #define FD_ROOT 1 4738edb6a3SChris Costello #define FD_DESC 3 48df8bae1dSRodney W. Grimes 49df8bae1dSRodney W. Grimes typedef enum { 50df8bae1dSRodney W. Grimes Froot, 5138edb6a3SChris Costello Fdesc 52df8bae1dSRodney W. Grimes } fdntype; 53df8bae1dSRodney W. Grimes 54df8bae1dSRodney W. Grimes struct fdescnode { 55996c772fSJohn Dyson LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 56df8bae1dSRodney W. Grimes struct vnode *fd_vnode; /* Back ptr to vnode */ 57df8bae1dSRodney W. Grimes fdntype fd_type; /* Type of this node */ 58df8bae1dSRodney W. Grimes unsigned fd_fd; /* Fd to be dup'ed */ 59df8bae1dSRodney W. Grimes char *fd_link; /* Link to fd/n */ 60df8bae1dSRodney W. Grimes int fd_ix; /* filesystem index */ 61df8bae1dSRodney W. Grimes }; 62df8bae1dSRodney W. Grimes 63df8bae1dSRodney W. Grimes #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 64df8bae1dSRodney W. Grimes #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 65df8bae1dSRodney W. Grimes 66996c772fSJohn Dyson extern int fdesc_init __P((struct vfsconf *)); 67df8bae1dSRodney W. Grimes extern int fdesc_root __P((struct mount *, struct vnode **)); 68df8bae1dSRodney W. Grimes extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); 69c4473420SPeter Wemm #endif /* _KERNEL */ 70