1d167cf6fSWarner Losh /*- 251369649SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 351369649SPedro F. Giffuni * 4df8bae1dSRodney W. Grimes * Copyright (c) 1992, 1993 5df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 6df8bae1dSRodney W. Grimes * 7df8bae1dSRodney W. Grimes * This code is derived from software donated to Berkeley by 8df8bae1dSRodney W. Grimes * Jan-Simon Pendry. 9df8bae1dSRodney W. Grimes * 10df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 11df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 12df8bae1dSRodney W. Grimes * are met: 13df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 14df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 15df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 16df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 17df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 1858fef175SEd Maste * 3. Neither the name of the University nor the names of its contributors 19df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 20df8bae1dSRodney W. Grimes * without specific prior written permission. 21df8bae1dSRodney W. Grimes * 22df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32df8bae1dSRodney W. Grimes * SUCH DAMAGE. 33df8bae1dSRodney W. Grimes */ 34df8bae1dSRodney W. Grimes 35f80dc46cSDmitry Chagin #ifndef _FS_FDESC_H_ 36f80dc46cSDmitry Chagin #define _FS_FDESC_H_ 37f80dc46cSDmitry Chagin 3860af8a6aSUlf Lilleengen /* Private mount flags for fdescfs. */ 3960af8a6aSUlf Lilleengen #define FMNT_UNMOUNTF 0x01 4077d3337cSDmitry Chagin #define FMNT_LINRDLNKF 0x02 41f9b1e711SKonstantin Belousov #define FMNT_NODUP 0x04 42*3905309dSKonstantin Belousov #define FMNT_RDLNKF 0x08 4377d3337cSDmitry Chagin 44df8bae1dSRodney W. Grimes struct fdescmount { 45df8bae1dSRodney W. Grimes struct vnode *f_root; /* Root node */ 4660af8a6aSUlf Lilleengen int flags; 47df8bae1dSRodney W. Grimes }; 48df8bae1dSRodney W. Grimes 4938edb6a3SChris Costello #define FD_ROOT 1 5038edb6a3SChris Costello #define FD_DESC 3 51df8bae1dSRodney W. Grimes 52df8bae1dSRodney W. Grimes typedef enum { 53df8bae1dSRodney W. Grimes Froot, 5438edb6a3SChris Costello Fdesc 55df8bae1dSRodney W. Grimes } fdntype; 56df8bae1dSRodney W. Grimes 57df8bae1dSRodney W. Grimes struct fdescnode { 58e3975643SJake Burkholder LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ 59df8bae1dSRodney W. Grimes struct vnode *fd_vnode; /* Back ptr to vnode */ 60df8bae1dSRodney W. Grimes fdntype fd_type; /* Type of this node */ 61df8bae1dSRodney W. Grimes unsigned fd_fd; /* Fd to be dup'ed */ 62df8bae1dSRodney W. Grimes int fd_ix; /* filesystem index */ 63df8bae1dSRodney W. Grimes }; 64df8bae1dSRodney W. Grimes 6560af8a6aSUlf Lilleengen extern struct mtx fdesc_hashmtx; 66df8bae1dSRodney W. Grimes #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) 67df8bae1dSRodney W. Grimes #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) 68df8bae1dSRodney W. Grimes 69f257b7a5SAlfred Perlstein extern vfs_init_t fdesc_init; 7060af8a6aSUlf Lilleengen extern vfs_uninit_t fdesc_uninit; 7160af8a6aSUlf Lilleengen extern int fdesc_allocvp(fdntype, unsigned, int, struct mount *, 72dfd233edSAttilio Rao struct vnode **); 73f80dc46cSDmitry Chagin #endif /* !_FS_FDESC_H_ */ 74