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Diffstat (limited to 'sysdeps/generic/sys/sysmacros.h')
-rw-r--r-- | sysdeps/generic/sys/sysmacros.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/generic/sys/sysmacros.h b/sysdeps/generic/sys/sysmacros.h new file mode 100644 index 0000000000..6b69689ace --- /dev/null +++ b/sysdeps/generic/sys/sysmacros.h @@ -0,0 +1,31 @@ +/* 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 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 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. + + 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. */ + +#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. */ +#define major(dev) ((int)(((unsigned int) (dev) >> 8) & 0xff)) +#define minor(dev) ((int)((dev) & 0xff)) +#define makedev(major, minor) (((major) << 8) | (minor)) + +#endif /* sys/sysmacros.h */ |