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authorKyle McMartin <kyle@mcmartin.ca>2008-07-29 05:02:13 +0200
committerKyle McMartin <kyle@hera.kernel.org>2008-10-10 18:32:29 +0200
commitdeae26bf6a10e47983606f5df080b91e97650ead (patch)
tree84a8a68145d0f713d7c5a1f9e6b3b03be9b3a4c8 /arch/parisc/include/asm/ioctl.h
parentparisc: move pdc_result to real2.S (diff)
downloadlinux-deae26bf6a10e47983606f5df080b91e97650ead.tar.xz
linux-deae26bf6a10e47983606f5df080b91e97650ead.zip
parisc: move include/asm-parisc to arch/parisc/include/asm
Diffstat (limited to 'arch/parisc/include/asm/ioctl.h')
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1 files changed, 44 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/ioctl.h b/arch/parisc/include/asm/ioctl.h
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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 */