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- /* Definitions of functions to access `dev_t' values.
- Copyright (C) 2003-2015 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);
- }
- libc_hidden_def(gnu_dev_major)
- unsigned int
- gnu_dev_minor (unsigned long long int dev)
- {
- return (dev & 0xff) | ((unsigned int) (dev >> 12) & ~0xff);
- }
- libc_hidden_def(gnu_dev_minor)
- 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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