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      1  1.23        ad /*	$NetBSD: fdesc.h,v 1.23 2020/01/17 20:08:09 ad Exp $	*/
      2   1.5       cgd 
      3   1.1       cgd /*
      4   1.4   mycroft  * Copyright (c) 1992, 1993
      5   1.4   mycroft  *	The Regents of the University of California.  All rights reserved.
      6   1.1       cgd  *
      7   1.3       cgd  * This code is derived from software donated to Berkeley by
      8   1.1       cgd  * Jan-Simon Pendry.
      9   1.1       cgd  *
     10   1.2       cgd  * Redistribution and use in source and binary forms, with or without
     11   1.2       cgd  * modification, are permitted provided that the following conditions
     12   1.2       cgd  * are met:
     13   1.2       cgd  * 1. Redistributions of source code must retain the above copyright
     14   1.2       cgd  *    notice, this list of conditions and the following disclaimer.
     15   1.2       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.2       cgd  *    notice, this list of conditions and the following disclaimer in the
     17   1.2       cgd  *    documentation and/or other materials provided with the distribution.
     18  1.15       agc  * 3. Neither the name of the University nor the names of its contributors
     19   1.2       cgd  *    may be used to endorse or promote products derived from this software
     20   1.2       cgd  *    without specific prior written permission.
     21   1.1       cgd  *
     22   1.2       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23   1.2       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24   1.2       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25   1.2       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26   1.2       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27   1.2       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28   1.2       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29   1.2       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30   1.2       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31   1.2       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32   1.2       cgd  * SUCH DAMAGE.
     33   1.1       cgd  *
     34  1.10      fvdl  *	@(#)fdesc.h	8.8 (Berkeley) 4/3/95
     35   1.7   mycroft  *
     36   1.7   mycroft  * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp #
     37   1.1       cgd  */
     38   1.1       cgd 
     39   1.8    briggs #ifdef _KERNEL
     40   1.1       cgd 
     41   1.3       cgd #define FD_ROOT		2
     42   1.3       cgd #define FD_DEVFD	3
     43   1.3       cgd #define FD_STDIN	4
     44   1.3       cgd #define FD_STDOUT	5
     45   1.3       cgd #define FD_STDERR	6
     46   1.3       cgd #define FD_CTTY		7
     47   1.3       cgd #define FD_DESC		8
     48   1.3       cgd #define FD_MAX		12
     49   1.3       cgd 
     50   1.3       cgd typedef enum {
     51   1.3       cgd 	Froot,
     52   1.3       cgd 	Fdevfd,
     53   1.3       cgd 	Fdesc,
     54   1.3       cgd 	Flink,
     55   1.3       cgd 	Fctty
     56   1.3       cgd } fdntype;
     57   1.3       cgd 
     58   1.1       cgd struct fdescnode {
     59   1.4   mycroft 	struct vnode	*fd_vnode;	/* Back ptr to vnode */
     60   1.3       cgd 	fdntype		fd_type;	/* Type of this node */
     61   1.3       cgd 	unsigned	fd_fd;		/* Fd to be dup'ed */
     62  1.22   hannken 	const char	*fd_link;	/* Link to fd/n */
     63   1.3       cgd 	int		fd_ix;		/* filesystem index */
     64   1.1       cgd };
     65   1.1       cgd 
     66   1.1       cgd #define	VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
     67   1.1       cgd 
     68  1.21  christos #define FDESC_MAXNAMLEN	255
     69  1.21  christos 
     70   1.3       cgd extern dev_t devctty;
     71  1.17   xtraeme extern void fdesc_init(void);
     72  1.17   xtraeme extern void fdesc_done(void);
     73  1.23        ad extern int fdesc_root(struct mount *, int, struct vnode **);
     74  1.17   xtraeme extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **);
     75  1.17   xtraeme extern int (**fdesc_vnodeop_p)(void *);
     76   1.1       cgd extern struct vfsops fdesc_vfsops;
     77  1.16    atatat 
     78   1.8    briggs #endif /* _KERNEL */
     79