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1: /* 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3: * 4: * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5: * 6: * This file contains Original Code and/or Modifications of Original Code 7: * as defined in and that are subject to the Apple Public Source License 8: * Version 2.0 (the 'License'). You may not use this file except in 9: * compliance with the License. The rights granted to you under the License 10: * may not be used to create, or enable the creation or redistribution of, 11: * unlawful or unlicensed copies of an Apple operating system, or to 12: * circumvent, violate, or enable the circumvention or violation of, any 13: * terms of an Apple operating system software license agreement. 14: * 15: * Please obtain a copy of the License at 16: * http://www.opensource.apple.com/apsl/ and read it before using this file. 17: * 18: * The Original Code and all software distributed under the License are 19: * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22: * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23: * Please see the License for the specific language governing rights and 24: * limitations under the License. 25: * 26: * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27: */ 28: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29: /*- 30: * Copyright (c) 1982, 1986, 1990, 1993, 1994 31: * The Regents of the University of California. All rights reserved. 32: * 33: * Redistribution and use in source and binary forms, with or without 34: * modification, are permitted provided that the following conditions 35: * are met: 36: * 1. Redistributions of source code must retain the above copyright 37: * notice, this list of conditions and the following disclaimer. 38: * 2. Redistributions in binary form must reproduce the above copyright 39: * notice, this list of conditions and the following disclaimer in the 40: * documentation and/or other materials provided with the distribution. 41: * 3. All advertising materials mentioning features or use of this software 42: * must display the following acknowledgement: 43: * This product includes software developed by the University of 44: * California, Berkeley and its contributors. 45: * 4. Neither the name of the University nor the names of its contributors 46: * may be used to endorse or promote products derived from this software 47: * without specific prior written permission. 48: * 49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59: * SUCH DAMAGE. 60: * 61: * @(#)ioccom.h 8.2 (Berkeley) 3/28/94 62: */ 63: 64: #ifndef _SYS_IOCCOM_H_ 65: #define _SYS_IOCCOM_H_ 66: 67: #include <sys/_types.h> 68: 69: /* 70: * Ioctl's have the command encoded in the lower word, and the size of 71: * any in or out parameters in the upper word. The high 3 bits of the 72: * upper word are used to encode the in/out status of the parameter. 73: */ 74: #define IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */ 75: #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) 76: #define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16)) 77: #define IOCGROUP(x) (((x) >> 8) & 0xff) 78: 79: #define IOCPARM_MAX (IOCPARM_MASK + 1) /* max size of ioctl args */ 80: /* no parameters */ 81: #define IOC_VOID (__uint32_t)0x20000000 82: /* copy parameters out */ 83: #define IOC_OUT (__uint32_t)0x40000000 84: /* copy parameters in */ 85: #define IOC_IN (__uint32_t)0x80000000 86: /* copy paramters in and out */ 87: #define IOC_INOUT (IOC_IN|IOC_OUT) 88: /* mask for IN/OUT/VOID */ 89: #define IOC_DIRMASK (__uint32_t)0xe0000000 90: 91: #define _IOC(inout,group,num,len) \ 92: (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num)) 93: #define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0) 94: #define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t)) 95: #define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t)) 96: /* this should be _IORW, but stdio got there first */ 97: #define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t)) 98: 99: #endif /* !_SYS_IOCCOM_H_ */ 100: