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fdesc.h revision 1.17 
      1  1.17  xtraeme /*	$NetBSD: fdesc.h,v 1.17 2005/08/30 20:08:01 xtraeme 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 struct fdescmount {
     41   1.1      cgd 	struct vnode	*f_root;	/* Root node */
     42   1.1      cgd };
     43   1.1      cgd 
     44   1.3      cgd #define FD_ROOT		2
     45   1.3      cgd #define FD_DEVFD	3
     46   1.3      cgd #define FD_STDIN	4
     47   1.3      cgd #define FD_STDOUT	5
     48   1.3      cgd #define FD_STDERR	6
     49   1.3      cgd #define FD_CTTY		7
     50   1.3      cgd #define FD_DESC		8
     51   1.3      cgd #define FD_MAX		12
     52   1.3      cgd 
     53   1.3      cgd typedef enum {
     54   1.3      cgd 	Froot,
     55   1.3      cgd 	Fdevfd,
     56   1.3      cgd 	Fdesc,
     57   1.3      cgd 	Flink,
     58   1.3      cgd 	Fctty
     59   1.3      cgd } fdntype;
     60   1.3      cgd 
     61   1.1      cgd struct fdescnode {
     62   1.6  mycroft 	LIST_ENTRY(fdescnode) fd_hash;	/* Hash list */
     63   1.4  mycroft 	struct vnode	*fd_vnode;	/* Back ptr to vnode */
     64   1.3      cgd 	fdntype		fd_type;	/* Type of this node */
     65   1.3      cgd 	unsigned	fd_fd;		/* Fd to be dup'ed */
     66   1.3      cgd 	char		*fd_link;	/* Link to fd/n */
     67   1.3      cgd 	int		fd_ix;		/* filesystem index */
     68   1.1      cgd };
     69   1.1      cgd 
     70   1.1      cgd #define VFSTOFDESC(mp)	((struct fdescmount *)((mp)->mnt_data))
     71   1.1      cgd #define	VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
     72   1.1      cgd 
     73   1.3      cgd extern dev_t devctty;
     74  1.17  xtraeme extern void fdesc_init(void);
     75  1.17  xtraeme extern void fdesc_done(void);
     76  1.17  xtraeme extern int fdesc_root(struct mount *, struct vnode **);
     77  1.17  xtraeme extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **);
     78  1.17  xtraeme extern int (**fdesc_vnodeop_p)(void *);
     79   1.1      cgd extern struct vfsops fdesc_vfsops;
     80  1.16   atatat 
     81  1.16   atatat #ifdef SYSCTL_SETUP_PROTO
     82  1.16   atatat SYSCTL_SETUP_PROTO(sysctl_vfs_fdesc_setup);
     83  1.16   atatat #endif /* SYSCTL_SETUP_PROTO */
     84   1.8   briggs #endif /* _KERNEL */
     85