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authorBrian Gerst <bgerst@didntduck.org>2006-01-10 07:52:18 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 19:01:34 +0300
commitaf4cd3fe4cfa75ca74f8d8622867371289043a8d (patch)
tree70dc7836a98758578628a96dc609a0c67f78dffb /include/asm-s390
parent7ff92053ddff48d9d7908a353bd85f893944463e (diff)
downloadlinux-af4cd3fe4cfa75ca74f8d8622867371289043a8d.tar.xz
[PATCH] Generic ioctl.h
Most arches copied the i386 ioctl.h. Combine them into a generic header. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-s390')
-rw-r--r--include/asm-s390/ioctl.h89
1 files changed, 1 insertions, 88 deletions
diff --git a/include/asm-s390/ioctl.h b/include/asm-s390/ioctl.h
index df7394345ac4..b279fe06dfe5 100644
--- a/include/asm-s390/ioctl.h
+++ b/include/asm-s390/ioctl.h
@@ -1,88 +1 @@
-/*
- * include/asm-s390/ioctl.h
- *
- * S390 version
- *
- * Derived from "include/asm-i386/ioctl.h"
- */
-
-#ifndef _S390_IOCTL_H
-#define _S390_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 !
- */
-
-/*
- * The following is for compatibility across the various Linux
- * platforms. The i386 ioctl numbering scheme doesn't really enforce
- * a type field. De facto, however, the top 8 bits of the lower 16
- * bits are indeed used as a type field, so we might just as well make
- * this explicit here. Please be sure to use the decoding macros
- * below from now on.
- */
-#define _IOC_NRBITS 8
-#define _IOC_TYPEBITS 8
-#define _IOC_SIZEBITS 14
-#define _IOC_DIRBITS 2
-
-#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1)
-#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1)
-#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1)
-#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1)
-
-#define _IOC_NRSHIFT 0
-#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS)
-#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS)
-#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS)
-
-/*
- * Direction bits.
- */
-#define _IOC_NONE 0U
-#define _IOC_WRITE 1U
-#define _IOC_READ 2U
-
-#define _IOC(dir,type,nr,size) \
- (((dir) << _IOC_DIRSHIFT) | \
- ((type) << _IOC_TYPESHIFT) | \
- ((nr) << _IOC_NRSHIFT) | \
- ((size) << _IOC_SIZESHIFT))
-
-/* provoke compile error for invalid uses of size argument */
-extern unsigned long __invalid_size_argument_for_IOC;
-#define _IOC_TYPECHECK(t) \
- ((sizeof(t) == sizeof(t[1]) && \
- sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
- sizeof(t) : __invalid_size_argument_for_IOC)
-
-/* used to create numbers */
-#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0)
-#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size)))
-#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
-#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
-#define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size))
-#define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
-#define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
-
-/* used to decode ioctl numbers.. */
-#define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
-#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
-#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
-#define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
-
-/* ...and for the drivers/sound files... */
-
-#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT)
-#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT)
-#define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
-#define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT)
-#define IOCSIZE_SHIFT (_IOC_SIZESHIFT)
-
-#endif /* _S390_IOCTL_H */
+#include <asm-generic/ioctl.h>