diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-16 22:27:58 -0500 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-16 22:27:58 -0500 |
commit | d05f06e60df4f56a70fb8a3e46335b40687169e9 (patch) | |
tree | c1eec6749fed86a21b08606e1e4acefe4b033253 /arch/parisc/include/uapi/asm/ioctl.h | |
parent | 0af1c5300db31f25a412e6e83d42b1747d56c9de (diff) | |
parent | 1d72d9f83df057e71c7951def41138a0230bf737 (diff) |
Merge branch 'arch-frv' into no-rebases
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 000000000000..ec8efa02beda --- /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 */ |