4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* $NetBSD: ioccom.h,v 1.8 2005/12/11 12:25:20 christos Exp $ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*-
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1982, 1986, 1990, 1993, 1994
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Neither the name of the University nor the names of its contributors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * may be used to endorse or promote products derived from this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * @(#)ioccom.h 8.3 (Berkeley) 1/9/95
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _SYS_IOCCOM_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _SYS_IOCCOM_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Ioctl's have the command encoded in the lower word, and the size of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * any in or out parameters in the upper word. The high 3 bits of the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * upper word are used to encode the in/out status of the parameter.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOCGROUP(x) (((x) >> 8) & 0xff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOCPARM_MAX NBPG /* max size of ioctl args, mult. of NBPG */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* no parameters */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOC_VOID (unsigned long)0x20000000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* copy parameters out */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOC_OUT (unsigned long)0x40000000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* copy parameters in */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOC_IN (unsigned long)0x80000000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* copy parameters in and out */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOC_INOUT (IOC_IN|IOC_OUT)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* mask for IN/OUT/VOID */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IOC_DIRMASK (unsigned long)0xe0000000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _IOC(inout,group,num,len) (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* this should be _IORW, but stdio got there first */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_SYS_IOCCOM_H_ */