| | 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_ */ |
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