source: rtems/c/src/libnetworking/sys/ioccom.h @ 4186b3b

4.104.114.84.95
Last change on this file since 4186b3b was 4186b3b, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 19, 1999 at 5:17:41 PM

Changed ioctl() prototype to be more like Linux/POSIX than BSD to ease
porting of ACE to RTEMS.

  • Property mode set to 100644
File size: 3.1 KB
Line 
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/*
41 * Ioctl's have the command encoded in the lower word, and the size of
42 * any in or out parameters in the upper word.  The high 3 bits of the
43 * upper word are used to encode the in/out status of the parameter.
44 */
45#define IOCPARM_MASK    0x1fff          /* parameter length, at most 13 bits */
46#define IOCPARM_LEN(x)  (((x) >> 16) & IOCPARM_MASK)
47#define IOCBASECMD(x)   ((x) & ~(IOCPARM_MASK << 16))
48#define IOCGROUP(x)     (((x) >> 8) & 0xff)
49
50#define IOCPARM_MAX     PAGE_SIZE               /* max size of ioctl, mult. of PAGE_SIZE */
51#define IOC_VOID        0x20000000      /* no parameters */
52#define IOC_OUT         0x40000000      /* copy out parameters */
53#define IOC_IN          0x80000000      /* copy in parameters */
54#define IOC_INOUT       (IOC_IN|IOC_OUT)
55#define IOC_DIRMASK     0xe0000000      /* mask for IN/OUT/VOID */
56
57#define _IOC(inout,group,num,len) \
58        (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
59#define _IO(g,n)        _IOC(IOC_VOID,  (g), (n), 0)
60#define _IOR(g,n,t)     _IOC(IOC_OUT,   (g), (n), sizeof(t))
61#define _IOW(g,n,t)     _IOC(IOC_IN,    (g), (n), sizeof(t))
62/* this should be _IORW, but stdio got there first */
63#define _IOWR(g,n,t)    _IOC(IOC_INOUT, (g), (n), sizeof(t))
64
65#ifndef KERNEL
66
67#include <sys/cdefs.h>
68
69__BEGIN_DECLS
70int     ioctl __P((int, int, ...));
71__END_DECLS
72
73#endif /* !KERNEL */
74
75#endif /* !_SYS_IOCCOM_H_ */
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