source: rtems/c/src/lib/include/ioccom.h @ 9b05600

4.104.114.84.95
Last change on this file since 9b05600 was 9b05600, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 14, 2000 at 8:22:31 PM

* empty log message *

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File size: 3.3 KB
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1/*-
2 * Copyright (c) 1982, 1986, 1990, 1993, 1994
3 *      The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by the University of
16 *      California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *      @(#)ioccom.h    8.2 (Berkeley) 3/28/94
34 * $Id$
35 */
36
37#ifndef _SYS_IOCCOM_H_
38#define _SYS_IOCCOM_H_
39
40/* the definitions were moved to a common placed so they could be shared */
41#include <sys/rtems_ioccom.h>
42
43#if 0
44/*
45 * Ioctl's have the command encoded in the lower word, and the size of
46 * any in or out parameters in the upper word.  The high 3 bits of the
47 * upper word are used to encode the in/out status of the parameter.
48 */
49#define IOCPARM_MASK    0x1fff          /* parameter length, at most 13 bits */
50#define IOCPARM_LEN(x)  (((x) >> 16) & IOCPARM_MASK)
51#define IOCBASECMD(x)   ((x) & ~(IOCPARM_MASK << 16))
52#define IOCGROUP(x)     (((x) >> 8) & 0xff)
53
54#define IOCPARM_MAX     PAGE_SIZE               /* max size of ioctl, mult. of PAGE_SIZE */
55#define IOC_VOID        0x20000000      /* no parameters */
56#define IOC_OUT         0x40000000      /* copy out parameters */
57#define IOC_IN          0x80000000      /* copy in parameters */
58#define IOC_INOUT       (IOC_IN|IOC_OUT)
59#define IOC_DIRMASK     0xe0000000      /* mask for IN/OUT/VOID */
60
61#define _IOC(inout,group,num,len) \
62        (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
63#define _IO(g,n)        _IOC(IOC_VOID,  (g), (n), 0)
64#define _IOR(g,n,t)     _IOC(IOC_OUT,   (g), (n), sizeof(t))
65#define _IOW(g,n,t)     _IOC(IOC_IN,    (g), (n), sizeof(t))
66/* this should be _IORW, but stdio got there first */
67#define _IOWR(g,n,t)    _IOC(IOC_INOUT, (g), (n), sizeof(t))
68#endif
69
70#ifndef KERNEL
71
72#include <sys/cdefs.h>
73
74__BEGIN_DECLS
75int     ioctl __P((int, int, ...));
76__END_DECLS
77
78#endif /* !KERNEL */
79
80#endif /* !_SYS_IOCCOM_H_ */
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