diff options
Diffstat (limited to 'arch/parisc/include/uapi/asm/ioctl.h')
| -rw-r--r-- | arch/parisc/include/uapi/asm/ioctl.h | 44 | 
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/parisc/include/uapi/asm/ioctl.h b/arch/parisc/include/uapi/asm/ioctl.h new file mode 100644 index 00000000000..ec8efa02bed --- /dev/null +++ b/arch/parisc/include/uapi/asm/ioctl.h @@ -0,0 +1,44 @@ +/* + *    Linux/PA-RISC Project (http://www.parisc-linux.org/) + *    Copyright (C) 1999,2003 Matthew Wilcox < willy at debian . org > + *    portions from "linux/ioctl.h for Linux" by H.H. Bergman. + * + *    This program is free software; you can redistribute it and/or modify + *    it under the terms of the GNU General Public License as published by + *    the Free Software Foundation; either version 2 of the License, or + *    (at your option) any later version. + * + *    This program is distributed in the hope that it will be useful, + *    but WITHOUT ANY WARRANTY; without even the implied warranty of + *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the + *    GNU General Public License for more details. + * + *    You should have received a copy of the GNU General Public License + *    along with this program; if not, write to the Free Software + *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA + */ + + +#ifndef _ASM_PARISC_IOCTL_H +#define _ASM_PARISC_IOCTL_H + +/* ioctl command encoding: 32 bits total, command in lower 16 bits, + * size of the parameter structure in the lower 14 bits of the + * upper 16 bits. + * Encoding the size of the parameter structure in the ioctl request + * is useful for catching programs compiled with old versions + * and to avoid overwriting user space outside the user buffer area. + * The highest 2 bits are reserved for indicating the ``access mode''. + * NOTE: This limits the max parameter size to 16kB -1 ! + */ + +/* + * Direction bits. + */ +#define _IOC_NONE	0U +#define _IOC_WRITE	2U +#define _IOC_READ	1U + +#include <asm-generic/ioctl.h> + +#endif /* _ASM_PARISC_IOCTL_H */  | 
