mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 18:30:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/* Definitions of macros to access `dev_t' values.
|
|
Copyright (C) 1996, 1997, 1999 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
|
|
|
|
/* For compatibility we provide alternative names.
|
|
|
|
The problem here is that compilers other than GCC probably don't
|
|
have the `long long' type and so `dev_t' is actually an array. */
|
|
#if defined __GNUC__ && __GNUC__ >= 2
|
|
# define major(dev) ((int)(((dev) >> 8) & 0xff))
|
|
# define minor(dev) ((int)((dev) & 0xff))
|
|
# define makedev(major, minor) ((((unsigned int) (major)) << 8) \
|
|
| ((unsigned int) (minor)))
|
|
#else
|
|
/* We need to know the word order here. This assumes that the word order
|
|
is consistent with the byte order. */
|
|
# include <endian.h>
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
# define major(dev) (((dev).__val[1] >> 8) & 0xff)
|
|
# define minor(dev) ((dev).__val[1] & 0xff)
|
|
# define makedev(major, minor) { 0, ((((unsigned int) (major)) << 8) \
|
|
| ((unsigned int) (minor))) }
|
|
# else
|
|
# define major(dev) (((dev).__val[0] >> 8) & 0xff)
|
|
# define minor(dev) ((dev).__val[0] & 0xff)
|
|
# define makedev(major, minor) { ((((unsigned int) (major)) << 8) \
|
|
| ((unsigned int) (minor))), 0 }
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* sys/sysmacros.h */
|