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/* * 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 */