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/******************************************************************************
*
* Module Name: oswindir - Windows directory access interfaces
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <acpi.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <io.h>
typedef struct ExternalFindInfo
{
struct _finddata_t DosInfo;
char *FullWildcardSpec;
long FindHandle;
char State;
char RequestedFileType;
} EXTERNAL_FIND_INFO;
/*******************************************************************************
*
* FUNCTION: AcpiOsOpenDirectory
*
* PARAMETERS: DirPathname - Full pathname to the directory
* WildcardSpec - string of the form "*.c", etc.
* RequestedFileType - Either a directory or normal file
*
* RETURN: A directory "handle" to be used in subsequent search operations.
* NULL returned on failure.
*
* DESCRIPTION: Open a directory in preparation for a wildcard search
*
******************************************************************************/
void *
AcpiOsOpenDirectory (
char *DirPathname,
char *WildcardSpec,
char RequestedFileType)
{
long FindHandle;
char *FullWildcardSpec;
EXTERNAL_FIND_INFO *SearchInfo;
/* No directory path means "use current directory" - use a dot */
if (!DirPathname || strlen (DirPathname) == 0)
{
DirPathname = ".";
}
/* Allocate the info struct that will be returned to the caller */
SearchInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
if (!SearchInfo)
{
return (NULL);
}
/* Allocate space for the full wildcard path */
FullWildcardSpec = calloc (
strlen (DirPathname) + strlen (WildcardSpec) + 2, 1);
if (!FullWildcardSpec)
{
printf ("Could not allocate buffer for wildcard pathname\n");
free (SearchInfo);
return (NULL);
}
/* Create the full wildcard path */
strcpy (FullWildcardSpec, DirPathname);
strcat (FullWildcardSpec, "/");
strcat (FullWildcardSpec, WildcardSpec);
/* Initialize the find functions, get first match */
FindHandle = _findfirst (FullWildcardSpec, &SearchInfo->DosInfo);
if (FindHandle == -1)
{
/* Failure means that no match was found */
free (FullWildcardSpec);
free (SearchInfo);
return (NULL);
}
/* Save the info in the return structure */
SearchInfo->RequestedFileType = RequestedFileType;
SearchInfo->FullWildcardSpec = FullWildcardSpec;
SearchInfo->FindHandle = FindHandle;
SearchInfo->State = 0;
return (SearchInfo);
}
/*******************************************************************************
*
* FUNCTION: AcpiOsGetNextFilename
*
* PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory
*
* RETURN: Next filename matched. NULL if no more matches.
*
* DESCRIPTION: Get the next file in the directory that matches the wildcard
* specification.
*
******************************************************************************/
char *
AcpiOsGetNextFilename (
void *DirHandle)
{
EXTERNAL_FIND_INFO *SearchInfo = DirHandle;
int Status;
char FileTypeNotMatched = 1;
/*
* Loop while we have matched files but not found any files of
* the requested type.
*/
while (FileTypeNotMatched)
{
/* On the first call, we already have the first match */
if (SearchInfo->State == 0)
{
/* No longer the first match */
SearchInfo->State = 1;
}
else
{
/* Get the next match */
Status = _findnext (SearchInfo->FindHandle, &SearchInfo->DosInfo);
if (Status != 0)
{
return (NULL);
}
}
/*
* Found a match, now check to make sure that the file type
* matches the requested file type (directory or normal file)
*
* NOTE: use of the attrib field saves us from doing a very
* expensive stat() on the file!
*/
switch (SearchInfo->RequestedFileType)
{
case REQUEST_FILE_ONLY:
/* Anything other than A_SUBDIR is OK */
if (!(SearchInfo->DosInfo.attrib & _A_SUBDIR))
{
FileTypeNotMatched = 0;
}
break;
case REQUEST_DIR_ONLY:
/* Must have A_SUBDIR bit set */
if (SearchInfo->DosInfo.attrib & _A_SUBDIR)
{
FileTypeNotMatched = 0;
}
break;
default:
return (NULL);
}
}
return (SearchInfo->DosInfo.name);
}
/*******************************************************************************
*
* FUNCTION: AcpiOsCloseDirectory
*
* PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory
*
* RETURN: None
*
* DESCRIPTION: Close the open directory and cleanup.
*
******************************************************************************/
void
AcpiOsCloseDirectory (
void *DirHandle)
{
EXTERNAL_FIND_INFO *SearchInfo = DirHandle;
/* Close the directory and free allocations */
_findclose (SearchInfo->FindHandle);
free (SearchInfo->FullWildcardSpec);
free (DirHandle);
}
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