108 lines
5.6 KiB
C
Executable File
108 lines
5.6 KiB
C
Executable File
/**************************************************************************/
|
|
/* */
|
|
/* 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 */
|
|
/** */
|
|
/** Media */
|
|
/** */
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
|
|
#define FX_SOURCE_CODE
|
|
|
|
|
|
/* Include necessary system files. */
|
|
|
|
#include "fx_api.h"
|
|
#include "fx_system.h"
|
|
#include "fx_media.h"
|
|
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* FUNCTION RELEASE */
|
|
/* */
|
|
/* _fx_media_space_available PORTABLE C */
|
|
/* 6.1 */
|
|
/* AUTHOR */
|
|
/* */
|
|
/* William E. Lamie, Microsoft Corporation */
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* This function returns the number of bytes available in the */
|
|
/* specified media. */
|
|
/* */
|
|
/* INPUT */
|
|
/* */
|
|
/* media_ptr Media control block pointer */
|
|
/* available_bytes_ptr Pointer to available bytes */
|
|
/* destination */
|
|
/* */
|
|
/* OUTPUT */
|
|
/* */
|
|
/* return status */
|
|
/* */
|
|
/* CALLS */
|
|
/* */
|
|
/* None */
|
|
/* */
|
|
/* _fx_media_extended_space_available Actual space available service*/
|
|
/* */
|
|
/* CALLED BY */
|
|
/* */
|
|
/* Application Code */
|
|
/* */
|
|
/* 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_media_space_available(FX_MEDIA *media_ptr, ULONG *available_bytes_ptr)
|
|
{
|
|
|
|
UINT status;
|
|
ULONG64 available_bytes;
|
|
|
|
/* Call actual media space available service. */
|
|
status = _fx_media_extended_space_available(media_ptr, &available_bytes);
|
|
|
|
/* Check status. */
|
|
if (status == FX_SUCCESS)
|
|
{
|
|
|
|
/* Determine if more than 4GB available. */
|
|
if (available_bytes > 0x00000000FFFFFFFF)
|
|
{
|
|
|
|
/* Yes, we must have more than 4GB available... report the maximum we can fit
|
|
in 32bits, which is 4GB. */
|
|
*available_bytes_ptr = 0xFFFFFFFF;
|
|
}
|
|
else
|
|
{
|
|
*available_bytes_ptr = (ULONG)(available_bytes);
|
|
}
|
|
}
|
|
|
|
/* Return status to the caller. */
|
|
return(status);
|
|
}
|
|
|