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| Rev | Author | Line No. | Line |
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| 2 | pj | 1 | /* Definitions of macros to access `dev_t' values. |
| 2 | Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |||
| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Library General Public License as |
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| 7 | published by the Free Software Foundation; either version 2 of the |
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| 8 | License, or (at your option) any later version. |
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| 9 | |||
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Library General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU Library General Public |
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| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
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| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 18 | Boston, MA 02111-1307, USA. */ |
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| 19 | |||
| 20 | #ifndef _SYS_SYSMACROS_H |
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| 21 | #define _SYS_SYSMACROS_H 1 |
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| 22 | |||
| 23 | /* For compatibility we provide alternative names. |
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| 24 | |||
| 25 | The problem here is that compilers other than GCC probably don't |
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| 26 | have the `long long' type and so `dev_t' is actually an array. */ |
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| 27 | #define major(dev) ((int)(((unsigned int) (dev) >> 8) & 0xff)) |
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| 28 | #define minor(dev) ((int)((dev) & 0xff)) |
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| 29 | #define makedev(major, minor) (((major) << 8) | (minor)) |
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| 30 | |||
| 31 | #endif /* sys/sysmacros.h */ |