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/**************************************************************************/
/* */
/* 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 */
/** */
/** Fault Tolerant */
/** */
/**************************************************************************/
/**************************************************************************/
#define FX_SOURCE_CODE
#include "fx_api.h"
#include "fx_utility.h"
#include "fx_fault_tolerant.h"
#ifdef FX_ENABLE_FAULT_TOLERANT
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _fx_fault_tolerant_read_log_file PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function reads the entire log file from file system into the */
/* fault tolerant cache. */
/* */
/* INPUT */
/* */
/* media_ptr Media control block pointer */
/* */
/* OUTPUT */
/* */
/* return status */
/* */
/* CALLS */
/* */
/* _fx_utility_logical_sector_read Read a logical sector */
/* */
/* CALLED BY */
/* */
/* _fx_fault_tolerant_enable */
/* */
/* 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 */
/* */
/**************************************************************************/
UINT _fx_fault_tolerant_read_log_file(FX_MEDIA *media_ptr)
{
UINT status;
ULONG sectors;
ULONG start_sector;
/* Calculate count of sectors to read. */
sectors = media_ptr -> fx_media_fault_tolerant_memory_buffer_size / media_ptr -> fx_media_bytes_per_sector;
/* Calculate the start sector of log file. */
start_sector = (media_ptr -> fx_media_fault_tolerant_start_cluster - FX_FAT_ENTRY_START) *
media_ptr -> fx_media_sectors_per_cluster +
media_ptr -> fx_media_data_sector_start;
status = _fx_utility_logical_sector_read(media_ptr, (ULONG64) start_sector,
media_ptr -> fx_media_fault_tolerant_memory_buffer,
sectors, FX_DATA_SECTOR);
/* Return the status. */
return(status);
}
#endif /* FX_ENABLE_FAULT_TOLERANT */
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