에프에이리눅스 / 1611_0007_prime_oven

Blame view

kernel/linux-imx6_3.14.28/fs/ntfs/bitmap.h 3.51 KB
edit raw normal view history
6b13f685e   김민수   BSP 최초 추가 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
  /*
   * 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 */