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date 2003.01.09.00.06.00; author agrover; state Exp;

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aystarik 2005-06-29 20:33:27 +00:00
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source/os_specific/service_layers/osunixdir.c Normal file
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/******************************************************************************
*
* Module Name: osunixdir - Unix directory access interfaces
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <fnmatch.h>
typedef struct ExternalFindInfo
{
DIR *dir_ptr;
char *WildcardSpec;
} EXTERNAL_FIND_INFO;
/*******************************************************************************
*
* FUNCTION: AcpiOsOpenDirectory
*
* PARAMETERS: DirPathname - Full pathname to the directory
* WildcardSpec - string of the form "*.c", etc.
*
* 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 *WildcardSpecBuf;
EXTERNAL_FIND_INFO *ExternalInfo;
DIR *dir;
/* Allocate the info struct that will be returned to the caller */
ExternalInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
if (!ExternalInfo)
{
return NULL;
}
/* Allocate space for the full wildcard path */
WildcardSpecBuf = calloc (strlen (WildcardSpec) + 2, 1);
if (!WildcardSpecBuf)
{
printf ("Could not allocate buffer for wildcard pathname\n");
free (ExternalInfo);
return NULL;
}
/* Create the full wildcard path */
strcpy (WildcardSpecBuf, WildcardSpec);
/* Get the directory stream */
dir = opendir(DirPathname);
if (!dir)
{
free(WildcardSpecBuf);
free(ExternalInfo);
return NULL;
}
/* Save the info in the return structure */
ExternalInfo->WildcardSpec = WildcardSpecBuf;
ExternalInfo->dir_ptr = dir;
return (ExternalInfo);
}
/*******************************************************************************
*
* 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 *ExternalInfo = DirHandle;
struct dirent *dir_entry;
while((dir_entry = readdir(ExternalInfo->dir_ptr)))
{
if (!fnmatch(ExternalInfo->WildcardSpec, dir_entry->d_name, 0))
return dir_entry->d_name;
}
return NULL;
}
/*******************************************************************************
*
* FUNCTION: AcpiOsCloseDirectory
*
* PARAMETERS: DirHandle - Created via AcpiOsOpenDirectory
*
* RETURN: None.
*
* DESCRIPTION: Close the open directory and cleanup.
*
******************************************************************************/
void
AcpiOsCloseDirectory (
void *DirHandle)
{
EXTERNAL_FIND_INFO *ExternalInfo = DirHandle;
/* Close the directory and free allocations */
closedir(ExternalInfo->dir_ptr);
free (ExternalInfo->WildcardSpec);
free (DirHandle);
}