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 parameters 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 | |