/* Definitions of macros to access `dev_t' values.
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996-2014 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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ 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
-Library General Public License for more details.
+ 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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+ 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/>. */
#ifndef _SYS_SYSMACROS_H
#define _SYS_SYSMACROS_H 1
-/* Get definition from kernel header. */
-#include <linux/kdev_t.h>
+#include <features.h>
-/* For compatibility we provide alternative names. */
-#define major(dev) MAJOR ((unsigned int) (dev))
-#define minor(dev) MINOR ((unsigned int) (dev))
-#define makedev(major, minor) MKDEV (major, minor)
+__BEGIN_DECLS
+
+__extension__
+extern unsigned int gnu_dev_major (unsigned long long int __dev)
+ __THROW __attribute_const__;
+__extension__
+extern unsigned int gnu_dev_minor (unsigned long long int __dev)
+ __THROW __attribute_const__;
+__extension__
+extern unsigned long long int gnu_dev_makedev (unsigned int __major,
+ unsigned int __minor)
+ __THROW __attribute_const__;
+
+#ifdef __USE_EXTERN_INLINES
+__extension__ __extern_inline __attribute_const__ unsigned int
+__NTH (gnu_dev_major (unsigned long long int __dev))
+{
+ return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
+}
+
+__extension__ __extern_inline __attribute_const__ unsigned int
+__NTH (gnu_dev_minor (unsigned long long int __dev))
+{
+ return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
+}
+
+__extension__ __extern_inline __attribute_const__ unsigned long long int
+__NTH (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));
+}
+#endif
+__END_DECLS
+
+/* Access the functions with their traditional names. */
+#define major(dev) gnu_dev_major (dev)
+#define minor(dev) gnu_dev_minor (dev)
+#define makedev(maj, min) gnu_dev_makedev (maj, min)
#endif /* sys/sysmacros.h */