glibc/include/sys/sysmacros.h

/* Definitions of macros to access 'dev_t' values.  Internal header.
   Copyright (C) 2018-2019 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/>.  */

#ifndef _ISOMAC
# define __SYSMACROS_NEED_IMPLEMENTATION
#endif

#include <misc/sys/sysmacros.h>

#if !defined _SYS_SYSMACROS_H_WRAPPER && !defined _ISOMAC
# define _SYS_SYSMACROS_H_WRAPPER 1

libc_hidden_proto (gnu_dev_major)
libc_hidden_proto (gnu_dev_minor)
libc_hidden_proto (gnu_dev_makedev)

# undef __SYSMACROS_DECL_TEMPL
# define __SYSMACROS_DECL_TEMPL(rtype, name, proto)	\
  extern rtype __gnu_dev_##name proto			\
  __THROW __attribute_const__ attribute_hidden;

# undef __SYSMACROS_IMPL_TEMPL
# define __SYSMACROS_IMPL_TEMPL(rtype, name, proto)		\
  __extension__ __extern_inline __attribute_const__ rtype	\
  __NTH (__gnu_dev_##name proto)

__SYSMACROS_DECLARE_MAJOR (__SYSMACROS_DECL_TEMPL)
__SYSMACROS_DECLARE_MINOR (__SYSMACROS_DECL_TEMPL)
__SYSMACROS_DECLARE_MAKEDEV (__SYSMACROS_DECL_TEMPL)

# ifdef __USE_EXTERN_INLINES
__SYSMACROS_DEFINE_MAJOR (__SYSMACROS_IMPL_TEMPL)
__SYSMACROS_DEFINE_MINOR (__SYSMACROS_IMPL_TEMPL)
__SYSMACROS_DEFINE_MAKEDEV (__SYSMACROS_IMPL_TEMPL)
# endif

#endif