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a1d312de7   Thomas Gleixner   treewide: Replace... 
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  /* SPDX-License-Identifier: GPL-2.0-or-later */
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  /*
   * bitmap.h - Defines for NTFS kernel bitmap handling.  Part of the Linux-NTFS
   *	      project.
   *
   * Copyright (c) 2004 Anton Altaparmakov
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   */
  
  #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,
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  		const s64 count, const u8 value, const bool is_rollback);
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  /**
   * 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,
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  			false);
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  }
  
  /**
   * 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 */