1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Linux/PA-RISC Project (http://www.parisc-linux.org/) 4*4882a593Smuzhiyun * Copyright (C) 1999,2003 Matthew Wilcox < willy at debian . org > 5*4882a593Smuzhiyun * portions from "linux/ioctl.h for Linux" by H.H. Bergman. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify 8*4882a593Smuzhiyun * it under the terms of the GNU General Public License as published by 9*4882a593Smuzhiyun * the Free Software Foundation; either version 2 of the License, or 10*4882a593Smuzhiyun * (at your option) any later version. 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun * This program is distributed in the hope that it will be useful, 13*4882a593Smuzhiyun * but WITHOUT ANY WARRANTY; without even the implied warranty of 14*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15*4882a593Smuzhiyun * GNU General Public License for more details. 16*4882a593Smuzhiyun * 17*4882a593Smuzhiyun * You should have received a copy of the GNU General Public License 18*4882a593Smuzhiyun * along with this program; if not, write to the Free Software 19*4882a593Smuzhiyun * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20*4882a593Smuzhiyun */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #ifndef _ASM_PARISC_IOCTL_H 24*4882a593Smuzhiyun #define _ASM_PARISC_IOCTL_H 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun /* ioctl command encoding: 32 bits total, command in lower 16 bits, 27*4882a593Smuzhiyun * size of the parameter structure in the lower 14 bits of the 28*4882a593Smuzhiyun * upper 16 bits. 29*4882a593Smuzhiyun * Encoding the size of the parameter structure in the ioctl request 30*4882a593Smuzhiyun * is useful for catching programs compiled with old versions 31*4882a593Smuzhiyun * and to avoid overwriting user space outside the user buffer area. 32*4882a593Smuzhiyun * The highest 2 bits are reserved for indicating the ``access mode''. 33*4882a593Smuzhiyun * NOTE: This limits the max parameter size to 16kB -1 ! 34*4882a593Smuzhiyun */ 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun * Direction bits. 38*4882a593Smuzhiyun */ 39*4882a593Smuzhiyun #define _IOC_NONE 0U 40*4882a593Smuzhiyun #define _IOC_WRITE 2U 41*4882a593Smuzhiyun #define _IOC_READ 1U 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #include <asm-generic/ioctl.h> 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #endif /* _ASM_PARISC_IOCTL_H */ 46