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Diffstat (limited to 'arch/parisc/include/asm/ioctl.h')
-rw-r--r-- | arch/parisc/include/asm/ioctl.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/ioctl.h b/arch/parisc/include/asm/ioctl.h new file mode 100644 index 000000000000..ec8efa02beda --- /dev/null +++ b/arch/parisc/include/asm/ioctl.h | |||
@@ -0,0 +1,44 @@ | |||
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 | |||
35 | /* | ||
36 | * Direction bits. | ||
37 | */ | ||
38 | #define _IOC_NONE 0U | ||
39 | #define _IOC_WRITE 2U | ||
40 | #define _IOC_READ 1U | ||
41 | |||
42 | #include <asm-generic/ioctl.h> | ||
43 | |||
44 | #endif /* _ASM_PARISC_IOCTL_H */ | ||