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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 */
/** */
/** Directory */
/** */
/**************************************************************************/
/**************************************************************************/
#define FX_SOURCE_CODE
/* Include necessary system files. */
#include "fx_api.h"
#include "fx_system.h"
#include "fx_directory.h"
#include "fx_utility.h"
#ifndef FX_NO_LOCAL_PATH
FX_LOCAL_PATH_SETUP
#endif
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _fx_directory_first_entry_find PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function returns the first directory entry of the current */
/* working directory. */
/* */
/* INPUT */
/* */
/* media_ptr Media control block pointer */
/* directory_name Destination for directory */
/* name */
/* */
/* OUTPUT */
/* */
/* return status */
/* */
/* CALLS */
/* */
/* _fx_directory_next_entry_find Find next directory entry */
/* */
/* CALLED BY */
/* */
/* FileX System Functions */
/* */
/* 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_directory_first_entry_find(FX_MEDIA *media_ptr, CHAR *directory_name)
{
UINT status;
#ifndef FX_MEDIA_STATISTICS_DISABLE
/* Increment the number of times this service has been called. */
media_ptr -> fx_media_directory_first_entry_finds++;
#endif
/* Check the media to make sure it is open. */
if (media_ptr -> fx_media_id != FX_MEDIA_ID)
{
/* Return the media not opened error. */
return(FX_MEDIA_NOT_OPEN);
}
/* If trace is enabled, insert this event into the trace buffer. */
FX_TRACE_IN_LINE_INSERT(FX_TRACE_DIRECTORY_FIRST_ENTRY_FIND, media_ptr, directory_name, 0, 0, FX_TRACE_DIRECTORY_EVENTS, 0, 0)
/* Protect against other threads accessing the media. */
FX_PROTECT
/* Determine if a local path is in effect at this point. */
#ifndef FX_NO_LOCAL_PATH
if (_tx_thread_current_ptr -> tx_thread_filex_ptr)
{
/* Yes, there is a local path. Set the current entry to zero. */
((FX_PATH *)_tx_thread_current_ptr -> tx_thread_filex_ptr) -> fx_path_current_entry = 0;
}
else
{
/* Use global default directory. Set the current entry to 0 in
order to pickup the first entry. */
media_ptr -> fx_media_default_path.fx_path_current_entry = 0;
}
#else
/* Set the current entry to 0 in order to pickup the first entry. */
media_ptr -> fx_media_default_path.fx_path_current_entry = 0;
#endif
/* Release media protection. */
FX_UNPROTECT
/* Call the next directory entry to pickup the first entry. */
status = _fx_directory_next_entry_find(media_ptr, directory_name);
/* Return status to the caller. */
return(status);
}