1*df6ad731Slogwang /*- 2*df6ad731Slogwang * Copyright (c) 1982, 1986, 1990, 1993, 1994 3*df6ad731Slogwang * The Regents of the University of California. All rights reserved. 4*df6ad731Slogwang * 5*df6ad731Slogwang * Redistribution and use in source and binary forms, with or without 6*df6ad731Slogwang * modification, are permitted provided that the following conditions 7*df6ad731Slogwang * are met: 8*df6ad731Slogwang * 1. Redistributions of source code must retain the above copyright 9*df6ad731Slogwang * notice, this list of conditions and the following disclaimer. 10*df6ad731Slogwang * 2. Redistributions in binary form must reproduce the above copyright 11*df6ad731Slogwang * notice, this list of conditions and the following disclaimer in the 12*df6ad731Slogwang * documentation and/or other materials provided with the distribution. 13*df6ad731Slogwang * 4. Neither the name of the University nor the names of its contributors 14*df6ad731Slogwang * may be used to endorse or promote products derived from this software 15*df6ad731Slogwang * without specific prior written permission. 16*df6ad731Slogwang * 17*df6ad731Slogwang * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18*df6ad731Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*df6ad731Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*df6ad731Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21*df6ad731Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*df6ad731Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*df6ad731Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*df6ad731Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*df6ad731Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*df6ad731Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*df6ad731Slogwang * SUCH DAMAGE. 28*df6ad731Slogwang * 29*df6ad731Slogwang * @(#)ioccom.h 8.2 (Berkeley) 3/28/94 30*df6ad731Slogwang * $FreeBSD$ 31*df6ad731Slogwang */ 32*df6ad731Slogwang 33*df6ad731Slogwang #ifndef _COMPAT_SYS_IOCCOM_H_ 34*df6ad731Slogwang #define _COMPAT_SYS_IOCCOM_H_ 35*df6ad731Slogwang 36*df6ad731Slogwang /* 37*df6ad731Slogwang * Ioctl's have the command encoded in the lower word, and the size of 38*df6ad731Slogwang * any in or out parameters in the upper word. The high 3 bits of the 39*df6ad731Slogwang * upper word are used to encode the in/out status of the parameter. 40*df6ad731Slogwang */ 41*df6ad731Slogwang #define IOCPARM_SHIFT 13 /* number of bits for ioctl size */ 42*df6ad731Slogwang #define IOCPARM_MASK ((1 << IOCPARM_SHIFT) - 1) /* parameter length mask */ 43*df6ad731Slogwang #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) 44*df6ad731Slogwang #define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16)) 45*df6ad731Slogwang #define IOCGROUP(x) (((x) >> 8) & 0xff) 46*df6ad731Slogwang 47*df6ad731Slogwang #define IOCPARM_MAX (1 << IOCPARM_SHIFT) /* max size of ioctl */ 48*df6ad731Slogwang #define IOC_VOID 0x20000000 /* no parameters */ 49*df6ad731Slogwang #define IOC_OUT 0x40000000 /* copy out parameters */ 50*df6ad731Slogwang #define IOC_IN 0x80000000 /* copy in parameters */ 51*df6ad731Slogwang #define IOC_INOUT (IOC_IN|IOC_OUT) 52*df6ad731Slogwang #define IOC_DIRMASK (IOC_VOID|IOC_OUT|IOC_IN) 53*df6ad731Slogwang 54*df6ad731Slogwang #define _IOC(inout,group,num,len) ((unsigned long) \ 55*df6ad731Slogwang ((inout) | (((len) & IOCPARM_MASK) << 16) | ((group) << 8) | (num))) 56*df6ad731Slogwang #define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0) 57*df6ad731Slogwang #define _IOWINT(g,n) _IOC(IOC_VOID, (g), (n), sizeof(int)) 58*df6ad731Slogwang #define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t)) 59*df6ad731Slogwang #define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t)) 60*df6ad731Slogwang /* this should be _IORW, but stdio got there first */ 61*df6ad731Slogwang #define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t)) 62*df6ad731Slogwang 63*df6ad731Slogwang int ioctl_va(int fd, unsigned long request, void *data, int argc, ...); 64*df6ad731Slogwang 65*df6ad731Slogwang #define ioctl(a, b, c) ioctl_va((a), (b), (c), 0) 66*df6ad731Slogwang 67*df6ad731Slogwang #endif /* !_COMPAT_SYS_IOCCOM_H_ */ 68