| /* Definitions of macros to access `dev_t' values. |
| Copyright (C) 1996, 1997, 1999, 2003, 2004 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef __SYS_SYSMACROS_H |
| #define __SYS_SYSMACROS_H 1 |
| |
| static inline unsigned int |
| __gnu_dev_major(unsigned long long int __dev) |
| { |
| return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff); |
| } |
| |
| static inline unsigned int |
| __gnu_dev_minor(unsigned long long int __dev) |
| { |
| return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff); |
| } |
| |
| static inline unsigned long long int |
| __gnu_dev_makedev(unsigned int __major, unsigned int __minor) |
| { |
| return ((__minor & 0xff) | ((__major & 0xfff) << 8) |
| | (((unsigned long long int) (__minor & ~0xff)) << 12) |
| | (((unsigned long long int) (__major & ~0xfff)) << 32)); |
| } |
| |
| /* Access the functions with their traditional names. */ |
| #ifndef major |
| # define major(dev) __gnu_dev_major (dev) |
| #endif |
| |
| #ifndef minor |
| # define minor(dev) __gnu_dev_minor (dev) |
| #endif |
| |
| #ifndef makedev |
| # define makedev(maj, min) __gnu_dev_makedev (maj, min) |
| #endif |
| |
| #endif /* sys/sysmacros.h */ |