Changes by: antona
Update of /cvsroot/linux-ntfs/linux-ntfs/include
In directory usw-pr-cvs1:/tmp/cvs-serv17701
Added Files:
bitmap.h
Log Message:
Added bitmap header.
--- NEW FILE ---
/*
* bitmap.h - Exports for bitmap handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2000,2001 Anton Altaparmakov.
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program/include file 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (in the main directory of the Linux-NTFS
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef BITMAP_H
#define BITMAP_H
#include <linux/types.h>
/*
* NOTES:
*
* - Operations are 8-bit only to ensure the functions work both on little
* and big endian machines! So don't make them 32-bit ops!
* - bitmap starts at bit = 0 and ends at bit = bitmap size - 1.
* - _Caller_ has to make sure that the bit to operate on is less than the
* size of the bitmap.
*/
/**
* set_bit - set a bit in a field of bits
* @bitmap: field of bits
* @bit: bit to set
* @newvalue: value to set bit to (0 or 1)
*
* Set the bit @bit in the @bitmap to @newvalue. Ignore all errors.
*/
extern inline void set_bit(__u8 *bitmap, __u64 bit, __u8 newvalue);
/**
* get_bit - get value of a bit in a field of bits
* @bitmap: field of bits
* @bit: bit to get
*
* Get and return the value of the bit @bit in @bitmap (0 or 1). Return -1 on
* error.
*/
extern inline char get_bit(__u8 *bitmap, __u64 bit);
/**
* get_and_set_bit - get value of a bit in a field of bits and set it afterwards
* @bitmap: field of bits
* @bit: bit to get/set
* @newvalue: value to set bit to (0 or 1)
*
* Return the value of the bit @bit and set it to @newvalue (0 or 1). Return -1
* on error.
*/
extern inline char get_and_set_bit(__u8 *bitmap, __u64 bit, __u8 newvalue);
#endif /* defined BITMAP_H */
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