mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 11:04:44 +08:00
c49c311150
Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/*
|
|
* bitmap.h - Defines for NTFS kernel bitmap handling. Part of the Linux-NTFS
|
|
* project.
|
|
*
|
|
* Copyright (c) 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
|
|
* 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 _LINUX_NTFS_BITMAP_H
|
|
#define _LINUX_NTFS_BITMAP_H
|
|
|
|
#ifdef NTFS_RW
|
|
|
|
#include <linux/fs.h>
|
|
|
|
#include "types.h"
|
|
|
|
extern int __ntfs_bitmap_set_bits_in_run(struct inode *vi, const s64 start_bit,
|
|
const s64 count, const u8 value, const bool is_rollback);
|
|
|
|
/**
|
|
* ntfs_bitmap_set_bits_in_run - set a run of bits in a bitmap to a value
|
|
* @vi: vfs inode describing the bitmap
|
|
* @start_bit: first bit to set
|
|
* @count: number of bits to set
|
|
* @value: value to set the bits to (i.e. 0 or 1)
|
|
*
|
|
* Set @count bits starting at bit @start_bit in the bitmap described by the
|
|
* vfs inode @vi to @value, where @value is either 0 or 1.
|
|
*
|
|
* Return 0 on success and -errno on error.
|
|
*/
|
|
static inline int ntfs_bitmap_set_bits_in_run(struct inode *vi,
|
|
const s64 start_bit, const s64 count, const u8 value)
|
|
{
|
|
return __ntfs_bitmap_set_bits_in_run(vi, start_bit, count, value,
|
|
false);
|
|
}
|
|
|
|
/**
|
|
* ntfs_bitmap_set_run - set a run of bits in a bitmap
|
|
* @vi: vfs inode describing the bitmap
|
|
* @start_bit: first bit to set
|
|
* @count: number of bits to set
|
|
*
|
|
* Set @count bits starting at bit @start_bit in the bitmap described by the
|
|
* vfs inode @vi.
|
|
*
|
|
* Return 0 on success and -errno on error.
|
|
*/
|
|
static inline int ntfs_bitmap_set_run(struct inode *vi, const s64 start_bit,
|
|
const s64 count)
|
|
{
|
|
return ntfs_bitmap_set_bits_in_run(vi, start_bit, count, 1);
|
|
}
|
|
|
|
/**
|
|
* ntfs_bitmap_clear_run - clear a run of bits in a bitmap
|
|
* @vi: vfs inode describing the bitmap
|
|
* @start_bit: first bit to clear
|
|
* @count: number of bits to clear
|
|
*
|
|
* Clear @count bits starting at bit @start_bit in the bitmap described by the
|
|
* vfs inode @vi.
|
|
*
|
|
* Return 0 on success and -errno on error.
|
|
*/
|
|
static inline int ntfs_bitmap_clear_run(struct inode *vi, const s64 start_bit,
|
|
const s64 count)
|
|
{
|
|
return ntfs_bitmap_set_bits_in_run(vi, start_bit, count, 0);
|
|
}
|
|
|
|
/**
|
|
* ntfs_bitmap_set_bit - set a bit in a bitmap
|
|
* @vi: vfs inode describing the bitmap
|
|
* @bit: bit to set
|
|
*
|
|
* Set bit @bit in the bitmap described by the vfs inode @vi.
|
|
*
|
|
* Return 0 on success and -errno on error.
|
|
*/
|
|
static inline int ntfs_bitmap_set_bit(struct inode *vi, const s64 bit)
|
|
{
|
|
return ntfs_bitmap_set_run(vi, bit, 1);
|
|
}
|
|
|
|
/**
|
|
* ntfs_bitmap_clear_bit - clear a bit in a bitmap
|
|
* @vi: vfs inode describing the bitmap
|
|
* @bit: bit to clear
|
|
*
|
|
* Clear bit @bit in the bitmap described by the vfs inode @vi.
|
|
*
|
|
* Return 0 on success and -errno on error.
|
|
*/
|
|
static inline int ntfs_bitmap_clear_bit(struct inode *vi, const s64 bit)
|
|
{
|
|
return ntfs_bitmap_clear_run(vi, bit, 1);
|
|
}
|
|
|
|
#endif /* NTFS_RW */
|
|
|
|
#endif /* defined _LINUX_NTFS_BITMAP_H */
|