80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)fdesc.h 8.5 (Berkeley) 1/21/94
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*
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* $Id: fdesc.h,v 1.5 1997/02/22 09:40:14 peter Exp $
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*/
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#ifdef KERNEL
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struct fdescmount {
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struct vnode *f_root; /* Root node */
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};
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#define FD_ROOT 2
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#define FD_DEVFD 3
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#define FD_STDIN 4
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#define FD_STDOUT 5
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#define FD_STDERR 6
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#define FD_CTTY 7
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#define FD_DESC 8
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#define FD_MAX 12
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typedef enum {
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Froot,
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Fdevfd,
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Fdesc,
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Flink,
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Fctty
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} fdntype;
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struct fdescnode {
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LIST_ENTRY(fdescnode) fd_hash; /* Hash list */
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struct vnode *fd_vnode; /* Back ptr to vnode */
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fdntype fd_type; /* Type of this node */
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unsigned fd_fd; /* Fd to be dup'ed */
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char *fd_link; /* Link to fd/n */
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int fd_ix; /* filesystem index */
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};
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#define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data))
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#define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
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extern dev_t devctty;
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extern int fdesc_init __P((struct vfsconf *));
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extern int fdesc_root __P((struct mount *, struct vnode **));
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extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **));
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#endif /* KERNEL */
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