mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-31 05:54:26 -04:00
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* 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 */
|