1 /* $NetBSD: kernfs.h,v 1.16 2001/02/21 21:39:54 jdolecek 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kernfs.h 8.6 (Berkeley) 3/29/95 39 */ 40 41 #define _PATH_KERNFS "/kern" /* Default mountpoint */ 42 43 #ifdef _KERNEL 44 struct kernfs_mount { 45 struct vnode *kf_root; /* Root node */ 46 }; 47 48 struct kern_target { 49 u_char kt_type; 50 u_char kt_namlen; 51 const char *kt_name; 52 void *kt_data; 53 #define KTT_NULL 1 54 #define KTT_TIME 5 55 #define KTT_INT 17 56 #define KTT_STRING 31 57 #define KTT_HOSTNAME 47 58 #define KTT_AVENRUN 53 59 #define KTT_DEVICE 71 60 #define KTT_MSGBUF 89 61 u_char kt_tag; 62 u_char kt_vtype; 63 mode_t kt_mode; 64 }; 65 66 struct kernfs_node { 67 const struct kern_target *kf_kt; 68 }; 69 70 #define VFSTOKERNFS(mp) ((struct kernfs_mount *)((mp)->mnt_data)) 71 #define VTOKERN(vp) ((struct kernfs_node *)(vp)->v_data) 72 73 extern int (**kernfs_vnodeop_p) __P((void *)); 74 extern struct vfsops kernfs_vfsops; 75 extern dev_t rrootdev; 76 #endif /* _KERNEL */ 77