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/* Definitions of functions to access `dev_t' values.
Copyright (C) 2003-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <endian.h>
#include <sys/sysmacros.h>
unsigned int
gnu_dev_major (unsigned long long int dev)
{
return ((dev >> 8) & 0xfff) | ((unsigned int) (dev >> 32) & ~0xfff);
}
unsigned int
gnu_dev_minor (unsigned long long int dev)
{
return (dev & 0xff) | ((unsigned int) (dev >> 12) & ~0xff);
}
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));
}
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