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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * HISTORY
27: *
28: * Revision 1.1.1.1 1998/09/22 21:05:30 wsanchez
29: * Import of Mac OS X kernel (~semeria)
30: *
31: * Revision 1.1.1.1 1998/03/07 02:25:45 wsanchez
32: * Import of OSF Mach kernel (~mburg)
33: *
34: * Revision 1.1.4.2 1997/02/07 12:12:35 barbou
35: * Fixed the defines (some were missing the "MACH_" prefixes).
36: * [1997/02/07 12:06:38 barbou]
37: *
38: * Revision 1.1.4.1 1996/11/29 16:59:20 stephen
39: * nmklinux_1.0b3_shared into pmk1.1
40: * Contents of sys/ioctl.h. Prefixed the definitions with "MACH" to avoid
41: * conflicts with UNIX servers.
42: * [96/09/18 barbou]
43: * [1996/11/29 16:33:15 stephen]
44: *
45: * $EndLog$
46: */
47: /*
48: * Mach Operating System
49: * Copyright (c) 1991 Carnegie Mellon University
50: * All Rights Reserved.
51: *
52: * Permission to use, copy, modify and distribute this software and its
53: * documentation is hereby granted, provided that both the copyright
54: * notice and this permission notice appear in all copies of the
55: * software, derivative works or modified versions, and any portions
56: * thereof, and that both notices appear in supporting documentation.
57: *
58: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
59: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
60: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
61: *
62: * Carnegie Mellon requests users of this software to return to
63: *
64: CS.CMU.EDU
65: * School of Computer Science
66: * Carnegie Mellon University
67: * Pittsburgh PA 15213-3890
68: *
69: * any improvements or extensions that they make and grant Carnegie Mellon rights
70: * to redistribute these changes.
71: */
72: /*
73: */
74: /*
75: * Format definitions for 'ioctl' commands in device definitions.
76: *
77: * From BSD4.4.
78: */
79:
80: #ifndef _MACH_MACH_IOCTL_H_
81: #define _MACH_MACH_IOCTL_H_
82:
83: /*
84: * Ioctl's have the command encoded in the lower word, and the size of
85: * any in or out parameters in the upper word. The high 3 bits of the
86: * upper word are used to encode the in/out status of the parameter.
87: */
88: #define MACH_IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */
89: #define MACH_IOC_VOID 0x20000000 /* no parameters */
90: #define MACH_IOC_OUT 0x40000000 /* copy out parameters */
91: #define MACH_IOC_IN 0x80000000 /* copy in parameters */
92: #define MACH_IOC_INOUT (MACH_IOC_IN|MACH_IOC_OUT)
93:
94: #define _MACH_IOC(inout,group,num,len) \
95: (inout | ((len & MACH_IOCPARM_MASK) << 16) | ((group) << 8) | (num))
96: #define _MACH_IO(g,n) _MACH_IOC(MACH_IOC_VOID, (g), (n), 0)
97: #define _MACH_IOR(g,n,t) _MACH_IOC(MACH_IOC_OUT, (g), (n), sizeof(t))
98: #define _MACH_IOW(g,n,t) _MACH_IOC(MACH_IOC_IN, (g), (n), sizeof(t))
99: #define _MACH_IOWR(g,n,t) _MACH_IOC(MACH_IOC_INOUT, (g), (n), sizeof(t))
100:
101: #ifdef MACH_KERNEL
102: /*
103: * to avoid changing the references in the micro-kernel sources...
104: */
105: #define IOCPARM_MASK MACH_IOCPARM_MASK
106: #define IOC_VOID MACH_IOC_VOID
107: #define IOC_OUT MACH_IOC_OUT
108: #define IOC_IN MACH_IOC_IN
109: #define IOC_INOUT MACH_IOC_INOUT
110: #define _IOC _MACH_IOC
111: #define _IO _MACH_IO
112: #define _IOR _MACH_IOR
113: #define _IOW _MACH_IOW
114: #define _IOWR _MACH_IOWR
115: #endif /* MACH_KERNEL */
116:
117: #endif /* _MACH_MACH_IOCTL_H_ */
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