mirror of
https://github.com/eclipse-threadx/filex.git
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107 lines
5.3 KiB
C
107 lines
5.3 KiB
C
/***************************************************************************
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* Copyright (c) 2024 Microsoft Corporation
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*
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* This program and the accompanying materials are made available under the
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* terms of the MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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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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if (status == FX_SUCCESS)
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{
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/* Determine if more than 4GB available. */
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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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