mirror of
https://github.com/eclipse-threadx/filex.git
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116 lines
6.7 KiB
C
116 lines
6.7 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** FileX Component */
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/** */
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/** Fault Tolerant */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define FX_SOURCE_CODE
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#include "fx_api.h"
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#include "fx_fault_tolerant.h"
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#ifdef FX_ENABLE_FAULT_TOLERANT
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _fx_fault_tolerant_transaction_start PORTABLE C */
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/* 6.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function is called at the beginning of an update to FileX */
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/* file, directory entry, or FAT table. It resets fault tolerant */
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/* internal state information. */
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/* */
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/* INPUT */
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/* */
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/* media_ptr Media control block pointer */
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/* */
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/* OUTPUT */
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/* */
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/* return status */
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/* */
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/* CALLS */
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/* */
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/* None */
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/* */
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/* CALLED BY */
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/* */
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/* _fx_directory_attributes_set */
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/* _fx_directory_create */
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/* _fx_directory_delete */
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/* _fx_directory_rename */
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/* _fx_file_allocate */
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/* _fx_file_attributes_set */
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/* _fx_file_best_effort_allocate */
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/* _fx_file_create */
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/* _fx_file_delete */
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/* _fx_file_rename */
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/* _fx_file_truncate */
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/* _fx_file_truncate_release */
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/* _fx_file_write */
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/* _fx_unicode_directory_create */
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/* _fx_unicode_file_create */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 William E. Lamie Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _fx_fault_tolerant_transaction_start(FX_MEDIA *media_ptr)
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{
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/* Is fault tolerant enabled? */
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if (media_ptr -> fx_media_fault_tolerant_enabled == FX_TRUE)
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{
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/* Is this a new transaction? */
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if (media_ptr -> fx_media_fault_tolerant_transaction_count == 0)
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{
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/* Yes. Initialize data. */
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media_ptr -> fx_media_fault_tolerant_file_size = FX_FAULT_TOLERANT_LOG_HEADER_SIZE +
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FX_FAULT_TOLERANT_FAT_CHAIN_SIZE +
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FX_FAULT_TOLERANT_LOG_CONTENT_HEADER_SIZE;
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/* Reset total logs. */
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media_ptr -> fx_media_fault_tolerant_total_logs = 0;
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/* Set state of fault tolerant. */
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media_ptr -> fx_media_fault_tolerant_state = FX_FAULT_TOLERANT_STATE_STARTED;
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}
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/* Increase the transaction. */
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media_ptr -> fx_media_fault_tolerant_transaction_count++;
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}
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return(FX_SUCCESS);
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}
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#endif /* FX_ENABLE_FAULT_TOLERANT */
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