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Provide new API functions: ntfs_bitmap_{set,clear}_bit(). 

(Logical change 1.327)
edge.strict_endians
cantab.net!aia21 2004-03-12 17:25:04 +00:00
parent a9d3049ded
commit 3cfb4590eb
2 changed files with 31 additions and 6 deletions
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32
include/ntfs/bitmap.h
View File

@ -1,7 +1,7 @@
/*
* bitmap.h - Exports for bitmap handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2000-2003 Anton Altaparmakov
* Copyright (c) 2000-2004 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
@ -46,7 +46,6 @@
static __inline__ void ntfs_bit_set(u8 *bitmap, const u64 bit,
const u8 new_value)
{
// Dprintf("bitmap %p, bit 0x%llx, new_value %i\n", bitmap, bit, new_value);
if (!bitmap || new_value > 1)
return;
if (!new_value)
@ -103,5 +102,32 @@ static __inline__ char ntfs_bit_get_and_set(u8 *bitmap, const u64 bit,
extern int ntfs_bitmap_set_run(ntfs_attr *na, s64 start_bit, s64 count);
extern int ntfs_bitmap_clear_run(ntfs_attr *na, s64 start_bit, s64 count);
#endif /* defined _NTFS_BITMAP_H */
/**
* ntfs_bitmap_set_bit - set a bit in a bitmap
* @na: attribute containing the bitmap
* @bit: bit to set
*
* Set the @bit in the bitmap described by the attribute @na.
*
* On success return 0 and on error return -1 with errno set to the error code.
*/
static __inline__ int ntfs_bitmap_set_bit(ntfs_attr *na, s64 bit)
{
return ntfs_bitmap_set_run(na, bit, 1);
}
/**
* ntfs_bitmap_clear_bit - clear a bit in a bitmap
* @na: attribute containing the bitmap
* @bit: bit to clear
*
* Clear @bit in the bitmap described by the attribute @na.
*
* On success return 0 and on error return -1 with errno set to the error code.
*/
static __inline__ int ntfs_bitmap_clear_bit(ntfs_attr *na, s64 bit)
{
return ntfs_bitmap_clear_run(na, bit, 1);
}
#endif /* defined _NTFS_BITMAP_H */

5
libntfs/bitmap.c
View File

@ -43,8 +43,8 @@
*
* On success return 0 and on error return -1 with errno set to the error code.
*/
static int ntfs_bitmap_set_bits_in_run(ntfs_attr *na, s64 start_bit, s64 count,
int value)
static __inline__ int ntfs_bitmap_set_bits_in_run(ntfs_attr *na, s64 start_bit,
s64 count, int value)
{
s64 bufsize, br;
u8 *buf, *lastbyte_buf;
@ -212,4 +212,3 @@ int ntfs_bitmap_clear_run(ntfs_attr *na, s64 start_bit, s64 count)
{
return ntfs_bitmap_set_bits_in_run(na, start_bit, count, 0);
}