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fdesc.h
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Editing: fdesc.h
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software donated to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fdesc.h 8.5 (Berkeley) 1/21/94 * * $FreeBSD$ */ #ifndef _FS_FDESC_H_ #define _FS_FDESC_H_ /* Private mount flags for fdescfs. */ #define FMNT_UNMOUNTF 0x01 #define FMNT_LINRDLNKF 0x02 struct fdescmount { struct vnode *f_root; /* Root node */ int flags; }; #define FD_ROOT 1 #define FD_DESC 3 typedef enum { Froot, Fdesc } fdntype; struct fdescnode { LIST_ENTRY(fdescnode) fd_hash; /* Hash list */ struct vnode *fd_vnode; /* Back ptr to vnode */ fdntype fd_type; /* Type of this node */ unsigned fd_fd; /* Fd to be dup'ed */ int fd_ix; /* filesystem index */ }; extern struct mtx fdesc_hashmtx; #define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) extern vfs_init_t fdesc_init; extern vfs_uninit_t fdesc_uninit; extern int fdesc_allocvp(fdntype, unsigned, int, struct mount *, struct vnode **); #endif /* !_FS_FDESC_H_ */
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