Linux Kernel  3.7.1
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ioctl.h
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1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License. See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1995, 96, 99, 2001 Ralf Baechle <[email protected]>
7  * Copyright (C) 2009 Wind River Systems
8  * Written by Ralf Baechle <[email protected]>
9  */
10 #ifndef __ASM_IOCTL_H
11 #define __ASM_IOCTL_H
12 
13 #define _IOC_SIZEBITS 13
14 #define _IOC_DIRBITS 3
15 
16 /*
17  * Direction bits _IOC_NONE could be 0, but OSF/1 gives it a bit.
18  * And this turns out useful to catch old ioctl numbers in header
19  * files for us.
20  */
21 #define _IOC_NONE 1U
22 #define _IOC_READ 2U
23 #define _IOC_WRITE 4U
24 
25 #include <asm-generic/ioctl.h>
26 
27 #endif /* __ASM_IOCTL_H */