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/**************************************************************************/ |
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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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/** Media */ |
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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 necessary system files. */ |
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#include "fx_api.h" |
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#include "fx_system.h" |
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#include "fx_media.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _fx_media_space_available 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 returns the number of bytes available in the */ |
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/* specified media. */ |
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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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/* available_bytes_ptr Pointer to available bytes */ |
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/* destination */ |
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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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/* _fx_media_extended_space_available Actual space available service*/ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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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_media_space_available(FX_MEDIA *media_ptr, ULONG *available_bytes_ptr) |
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{ |
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UINT status; |
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ULONG64 available_bytes; |
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/* Call actual media space available service. */ |
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status = _fx_media_extended_space_available(media_ptr, &available_bytes); |
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/* Check status. */ |
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✓✓ |
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if (status == FX_SUCCESS) |
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{ |
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/* Determine if more than 4GB available. */ |
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✓✓ |
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if (available_bytes > 0x00000000FFFFFFFF) |
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{ |
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/* Yes, we must have more than 4GB available... report the maximum we can fit |
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in 32bits, which is 4GB. */ |
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*available_bytes_ptr = 0xFFFFFFFF; |
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} |
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else |
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{ |
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*available_bytes_ptr = (ULONG)(available_bytes); |
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} |
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} |
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/* Return status to the caller. */ |
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return(status); |
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} |
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