Annotation of prex/include/sys/ioctl.h, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 2005, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contibutors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #ifndef _SYS_IOCTL_H
31: #define _SYS_IOCTL_H
32:
33: #include <sys/cdefs.h>
34: #include <prex/ioctl.h>
35:
36: /*
37: * Ioctl's have the command encoded in the lower word, and the size of
38: * any in or out parameters in the upper word. The high 3 bits of the
39: * upper word are used to encode the in/out status of the parameter.
40: */
41: #define IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */
42: #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
43: #define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16))
44: #define IOCGROUP(x) (((x) >> 8) & 0xff)
45:
46: #define IOCPARM_MAX 256
47:
48: #define IOC_VOID 0x20000000 /* no parameters */
49: #define IOC_OUT 0x40000000 /* copy out parameters */
50: #define IOC_IN 0x80000000U /* copy in parameters */
51: #define IOC_INOUT (IOC_IN|IOC_OUT)
52: #define IOC_DIRMASK 0xe0000000
53:
54: #define _IOC(inout,group,num,len) \
55: (u_long)(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
56: #define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0)
57: #define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t))
58: #define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t))
59: /* this should be _IORW, but stdio got there first */
60: #define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t))
61:
62:
63: __BEGIN_DECLS
64: int ioctl(int, unsigned long, ...);
65: __END_DECLS
66:
67: #endif /* !_SYS_IOCTL_H */
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