Outline ![]()
Files ![]()
loading...
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
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** FileX Component */
/** */
/** Utility */
/** */
/**************************************************************************/
/**************************************************************************/
#define FX_SOURCE_CODE
/* Include necessary system files. */
#include "fx_api.h"
#ifdef FX_ENABLE_EXFAT
#include "fx_system.h"
#include "fx_media.h"
#include "fx_utility.h"
#include "fx_directory_exFAT.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _fx_utility_exFAT_system_area_checksum_write PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function writes system area checksum. */
/* */
/* INPUT */
/* */
/* media_ptr Media control block pointer */
/* sector_buffer Pointer to sector buffer */
/* system_area_checksum_ptr Pointer to checksum value */
/* */
/* OUTPUT */
/* */
/* return status */
/* */
/* CALLS */
/* */
/* _fx_utility_exFAT_system_sector_write Write a format sector */
/* */
/* CALLED BY */
/* */
/* FileX System Functions */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
/* 09-30-2020 William E. Lamie Modified comment(s), */
/* resulting in version 6.1 */
/* 01-31-2022 Bhupendra Naphade Modified comment(s), replaced */
/* sector size constant, */
/* resulting in version 6.1.10 */
/* */
/**************************************************************************/
UINT _fx_utility_exFAT_system_area_checksum_write(FX_MEDIA *media_ptr, UCHAR *sector_buffer, ULONG *system_area_checksum_ptr)
{
UINT index;
/* Fill buffer by check sum. */
for (index = 0; index < media_ptr -> fx_media_bytes_per_sector;)
{
_fx_utility_32_unsigned_write(§or_buffer[index],
*system_area_checksum_ptr);
index += sizeof(*system_area_checksum_ptr);
}
/* Write Check Sum for Main System area. */
_fx_utility_exFAT_system_sector_write(media_ptr, sector_buffer,
FX_EXFAT_FAT_MAIN_SYSTEM_AREA_SIZE - 1,
1, FX_BOOT_SECTOR);
if (FX_SUCCESS != media_ptr -> fx_media_driver_status)
{
return(media_ptr -> fx_media_driver_status);
}
/* Write Check Sum for BackUp System area. */
_fx_utility_exFAT_system_sector_write(media_ptr, sector_buffer,
FX_EXFAT_FAT_MAIN_SYSTEM_AREA_SIZE - 1 + FX_EXFAT_FAT_MAIN_SYSTEM_AREA_SIZE,
1, FX_BOOT_SECTOR);
return(media_ptr -> fx_media_driver_status);
}
#endif /* FX_ENABLE_EXFAT */
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.