1d167cf6fSWarner Losh /*- 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. 1658fef175SEd Maste * 3. Neither the name of the University nor the names of its contributors 17df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 18df8bae1dSRodney W. Grimes * without specific prior written permission. 19df8bae1dSRodney W. Grimes * 20df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30df8bae1dSRodney W. Grimes * SUCH DAMAGE. 31df8bae1dSRodney W. Grimes * 32df8bae1dSRodney W. Grimes * @(#)fdesc.h 8.5 (Berkeley) 1/21/94 33df8bae1dSRodney W. Grimes * 34c3aac50fSPeter Wemm * $FreeBSD$ 35df8bae1dSRodney W. Grimes */ 36df8bae1dSRodney W. Grimes 37*f80dc46cSDmitry Chagin #ifndef _FS_FDESC_H_ 38*f80dc46cSDmitry Chagin #define _FS_FDESC_H_ 39*f80dc46cSDmitry Chagin 4060af8a6aSUlf Lilleengen /* Private mount flags for fdescfs. */ 4160af8a6aSUlf Lilleengen #define FMNT_UNMOUNTF 0x01 42df8bae1dSRodney W. Grimes struct fdescmount { 43df8bae1dSRodney W. Grimes struct vnode *f_root; /* Root node */ 4460af8a6aSUlf Lilleengen int flags; 45df8bae1dSRodney W. Grimes }; 46df8bae1dSRodney W. Grimes 4738edb6a3SChris Costello #define FD_ROOT 1 4838edb6a3SChris Costello #define FD_DESC 3 49df8bae1dSRodney W. Grimes 50df8bae1dSRodney W. Grimes typedef enum { 51df8bae1dSRodney W. Grimes Froot, 5238edb6a3SChris Costello Fdesc 53df8bae1dSRodney W. Grimes } fdntype; 54df8bae1dSRodney W. Grimes 55df8bae1dSRodney W. Grimes struct fdescnode { 56e3975643SJake Burkholder LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 57df8bae1dSRodney W. Grimes struct vnode *fd_vnode; /* Back ptr to vnode */ 58df8bae1dSRodney W. Grimes fdntype fd_type; /* Type of this node */ 59df8bae1dSRodney W. Grimes unsigned fd_fd; /* Fd to be dup'ed */ 60df8bae1dSRodney W. Grimes int fd_ix; /* filesystem index */ 61df8bae1dSRodney W. Grimes }; 62df8bae1dSRodney W. Grimes 6360af8a6aSUlf Lilleengen extern struct mtx fdesc_hashmtx; 64df8bae1dSRodney W. Grimes #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 65df8bae1dSRodney W. Grimes #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 66df8bae1dSRodney W. Grimes 67f257b7a5SAlfred Perlstein extern vfs_init_t fdesc_init; 6860af8a6aSUlf Lilleengen extern vfs_uninit_t fdesc_uninit; 6960af8a6aSUlf Lilleengen extern int fdesc_allocvp(fdntype, unsigned, int, struct mount *, 70dfd233edSAttilio Rao struct vnode **); 71*f80dc46cSDmitry Chagin #endif /* !_FS_FDESC_H_ */ 72