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