| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Definitions of macros to access `dev_t' values. |
| 2 | Copyright (C) 1996-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _SYS_SYSMACROS_H |
| 20 | #define _SYS_SYSMACROS_H 1 |
| 21 | |
| 22 | /* For compatibility we provide alternative names. |
| 23 | |
| 24 | The problem here is that compilers other than GCC probably don't |
| 25 | have the `long long' type and so `dev_t' is actually an array. */ |
| 26 | #define major(dev) ((int)(((unsigned int) (dev) >> 8) & 0xff)) |
| 27 | #define minor(dev) ((int)((dev) & 0xff)) |
| 28 | #define makedev(major, minor) (((major) << 8) | (minor)) |
| 29 | |
| 30 | #endif /* sys/sysmacros.h */ |