From 1dc9e472e19acfe6dc7f41e429236e7eef7ceda1 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 19:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- libc/include/sys/sysmacros.h | 52 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 libc/include/sys/sysmacros.h (limited to 'libc/include/sys/sysmacros.h') diff --git a/libc/include/sys/sysmacros.h b/libc/include/sys/sysmacros.h new file mode 100644 index 0000000..6f053a8 --- /dev/null +++ b/libc/include/sys/sysmacros.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef _SYS_SYSMACROS_H_ +#define _SYS_SYSMACROS_H_ + +/* some rogue code includes this file directly :-( */ +#ifndef _SYS_TYPES_H_ +# include +#endif + +static __inline__ int major(dev_t _dev) +{ + return (_dev >> 8) & 0xfff; +} + +static __inline__ int minor(dev_t _dev) +{ + return (_dev & 0xff) | ((_dev >> 12) & 0xfff00); +} + +static __inline__ dev_t makedev(int __ma, int __mi) +{ + return ((__ma & 0xfff) << 8) | (__mi & 0xff) | ((__mi & 0xfff00) << 12); +} + +#endif /* _SYS_SYSMACROS_H_ */ + -- cgit v1.1