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kernfs.h revision 1.17 
      1 /*	$NetBSD: kernfs.h,v 1.17 2003/08/07 16:32:37 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software donated to Berkeley by
      8  * Jan-Simon Pendry.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)kernfs.h	8.6 (Berkeley) 3/29/95
     35  */
     36 
     37 #define	_PATH_KERNFS	"/kern"		/* Default mountpoint */
     38 
     39 #ifdef _KERNEL
     40 struct kernfs_mount {
     41 	struct vnode	*kf_root;	/* Root node */
     42 };
     43 
     44 struct kern_target {
     45 	u_char kt_type;
     46 	u_char kt_namlen;
     47 	const char *kt_name;
     48 	void *kt_data;
     49 #define	KTT_NULL	 1
     50 #define	KTT_TIME	 5
     51 #define KTT_INT		17
     52 #define	KTT_STRING	31
     53 #define KTT_HOSTNAME	47
     54 #define KTT_AVENRUN	53
     55 #define KTT_DEVICE	71
     56 #define	KTT_MSGBUF	89
     57 	u_char kt_tag;
     58 	u_char kt_vtype;
     59 	mode_t kt_mode;
     60 };
     61 
     62 struct kernfs_node {
     63 	const struct kern_target *kf_kt;
     64 };
     65 
     66 #define VFSTOKERNFS(mp)	((struct kernfs_mount *)((mp)->mnt_data))
     67 #define	VTOKERN(vp) ((struct kernfs_node *)(vp)->v_data)
     68 
     69 extern int (**kernfs_vnodeop_p) __P((void *));
     70 extern struct vfsops kernfs_vfsops;
     71 extern dev_t rrootdev;
     72 #endif /* _KERNEL */
     73