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glibc  2.9
sysmacros.h
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00001 /* Definitions of macros to access `dev_t' values.  FreeBSD version.
00002    Copyright (C) 2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #ifndef _SYS_SYSMACROS_H
00021 #define _SYS_SYSMACROS_H    1
00022 
00023 /* For compatibility we provide alternative names.  */
00024 #define major(dev) ((int)(((unsigned int) (dev) >> 8) & 0xff))
00025 #define minor(dev) ((int)((dev) & 0xffff00ff))
00026 #define makedev(major, minor) (((major) << 8) | (minor))
00027 
00028 #endif /* sys/sysmacros.h */