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1 | /* |
2 | * Linux/PA-RISC Project (http://www.parisc-linux.org/) | |
3 | * Copyright (C) 1999,2003 Matthew Wilcox < willy at debian . org > | |
4 | * portions from "linux/ioctl.h for Linux" by H.H. Bergman. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _ASM_PARISC_IOCTL_H | |
23 | #define _ASM_PARISC_IOCTL_H | |
24 | ||
25 | /* ioctl command encoding: 32 bits total, command in lower 16 bits, | |
26 | * size of the parameter structure in the lower 14 bits of the | |
27 | * upper 16 bits. | |
28 | * Encoding the size of the parameter structure in the ioctl request | |
29 | * is useful for catching programs compiled with old versions | |
30 | * and to avoid overwriting user space outside the user buffer area. | |
31 | * The highest 2 bits are reserved for indicating the ``access mode''. | |
32 | * NOTE: This limits the max parameter size to 16kB -1 ! | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | /* |
36 | * Direction bits. | |
37 | */ | |
38 | #define _IOC_NONE 0U | |
39 | #define _IOC_WRITE 2U | |
40 | #define _IOC_READ 1U | |
41 | ||
f54d8a1b | 42 | #include <asm-generic/ioctl.h> |
1da177e4 LT |
43 | |
44 | #endif /* _ASM_PARISC_IOCTL_H */ |