patch-1.3.22 linux/include/linux/ioctl.h

• Lines: 60
• Date: Tue Aug 29 10:15:53 1995
• Orig file: v1.3.21/linux/include/linux/ioctl.h
• Orig date: Wed Aug 9 14:55:42 1995

diff -u --recursive --new-file v1.3.21/linux/include/linux/ioctl.h linux/include/linux/ioctl.h
@@ -1,58 +1,7 @@
-/* $Id: ioctl.h,v 1.5 1993/07/19 21:53:50 root Exp root $
- *
- * linux/ioctl.h for Linux by H.H. Bergman.
- */
-
 #ifndef _LINUX_IOCTL_H
 #define _LINUX_IOCTL_H
 
-#include <asm/page.h>		/* for PAGE_SIZE */
-
-/* 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 !
- */
-
-#define IOC_VOID	0x00000000	/* param in size field */
-#define IOC_IN		0x40000000	/* user --> kernel */
-#define IOC_OUT		0x80000000	/* kernel --> user */
-#define IOC_INOUT	(IOC_IN | IOC_OUT)	/* both */
-#define IOCSIZE_MASK	0x3fff0000	/* size (max 16k-1 bytes) */
-#define IOCSIZE_SHIFT	16		/* how to get the size */
-#define IOCSIZE_MAX	((PAGE_SIZE-1)&(IOCSIZE_MASK >> IOCSIZE_SHIFT))
-#define IOCCMD_MASK	0x0000ffff	/* command code */
-#define IOCCMD_SHIFT	0
-#define IOCPARM_MASK IOCCMD_MASK
-#define IOCPARM_SHIFT IOCCMD_SHIFT
-
-#define IOC_SIZE(cmd)	(((cmd) & IOCSIZE_MASK) >> IOCSIZE_SHIFT)
-#define IOCBASECMD(cmd)	((cmd) & ~IOCPARM_MASK)
-#define IOCGROUP(cmd)	(((cmd) >> 8) & 0xFF)
-
-#ifndef _IO
-/* _IO(magic, subcode); size field is zero and the 
- * subcode determines the command.
- */
-#define _IO(c,d)	(IOC_VOID | ((c)<<8) | (d)) /* param encoded */
-#endif
-
-#ifndef _IOW
-/* _IOXX(magic, subcode, arg_t); where arg_t is the type of the
- * (last) argument field in the ioctl call, if present.
- */
-#define _IOW(c,d,t)	(IOC_IN | ((sizeof(t)<<16) & IOCSIZE_MASK) | \
-				  ((c)<<8) | (d))
-#define _IOR(c,d,t)	(IOC_OUT | ((sizeof(t)<<16) & IOCSIZE_MASK) | \
-				   ((c)<<8) | (d))
-/* WR rather than RW to avoid conflict with stdio.h */
-#define _IOWR(c,d,t)	(IOC_INOUT | ((sizeof(t)<<16) & IOCSIZE_MASK) | \
-				     ((c)<<8) | (d))
-#endif /* !_IOW */
+#include <asm/ioctl.h>
 
 #endif /* _LINUX_IOCTL_H */