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  1.  
  2. /******************************************************************************
  3.  *
  4.  * Module Name: oswindir - Windows directory access interfaces
  5.  *
  6.  *****************************************************************************/
  7.  
  8. /******************************************************************************
  9.  *
  10.  * 1. Copyright Notice
  11.  *
  12.  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  13.  * All rights reserved.
  14.  *
  15.  * 2. License
  16.  *
  17.  * 2.1. This is your license from Intel Corp. under its intellectual property
  18.  * rights.  You may have additional license terms from the party that provided
  19.  * you this software, covering your right to use that party's intellectual
  20.  * property rights.
  21.  *
  22.  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  23.  * copy of the source code appearing in this file ("Covered Code") an
  24.  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  25.  * base code distributed originally by Intel ("Original Intel Code") to copy,
  26.  * make derivatives, distribute, use and display any portion of the Covered
  27.  * Code in any form, with the right to sublicense such rights; and
  28.  *
  29.  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  30.  * license (with the right to sublicense), under only those claims of Intel
  31.  * patents that are infringed by the Original Intel Code, to make, use, sell,
  32.  * offer to sell, and import the Covered Code and derivative works thereof
  33.  * solely to the minimum extent necessary to exercise the above copyright
  34.  * license, and in no event shall the patent license extend to any additions
  35.  * to or modifications of the Original Intel Code.  No other license or right
  36.  * is granted directly or by implication, estoppel or otherwise;
  37.  *
  38.  * The above copyright and patent license is granted only if the following
  39.  * conditions are met:
  40.  *
  41.  * 3. Conditions
  42.  *
  43.  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  44.  * Redistribution of source code of any substantial portion of the Covered
  45.  * Code or modification with rights to further distribute source must include
  46.  * the above Copyright Notice, the above License, this list of Conditions,
  47.  * and the following Disclaimer and Export Compliance provision.  In addition,
  48.  * Licensee must cause all Covered Code to which Licensee contributes to
  49.  * contain a file documenting the changes Licensee made to create that Covered
  50.  * Code and the date of any change.  Licensee must include in that file the
  51.  * documentation of any changes made by any predecessor Licensee.  Licensee
  52.  * must include a prominent statement that the modification is derived,
  53.  * directly or indirectly, from Original Intel Code.
  54.  *
  55.  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  56.  * Redistribution of source code of any substantial portion of the Covered
  57.  * Code or modification without rights to further distribute source must
  58.  * include the following Disclaimer and Export Compliance provision in the
  59.  * documentation and/or other materials provided with distribution.  In
  60.  * addition, Licensee may not authorize further sublicense of source of any
  61.  * portion of the Covered Code, and must include terms to the effect that the
  62.  * license from Licensee to its licensee is limited to the intellectual
  63.  * property embodied in the software Licensee provides to its licensee, and
  64.  * not to intellectual property embodied in modifications its licensee may
  65.  * make.
  66.  *
  67.  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  68.  * substantial portion of the Covered Code or modification must reproduce the
  69.  * above Copyright Notice, and the following Disclaimer and Export Compliance
  70.  * provision in the documentation and/or other materials provided with the
  71.  * distribution.
  72.  *
  73.  * 3.4. Intel retains all right, title, and interest in and to the Original
  74.  * Intel Code.
  75.  *
  76.  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  77.  * Intel shall be used in advertising or otherwise to promote the sale, use or
  78.  * other dealings in products derived from or relating to the Covered Code
  79.  * without prior written authorization from Intel.
  80.  *
  81.  * 4. Disclaimer and Export Compliance
  82.  *
  83.  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  84.  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  85.  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  86.  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  87.  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  88.  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  89.  * PARTICULAR PURPOSE.
  90.  *
  91.  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  92.  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  93.  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  94.  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  95.  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  96.  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  97.  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  98.  * LIMITED REMEDY.
  99.  *
  100.  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  101.  * software or system incorporating such software without first obtaining any
  102.  * required license or other approval from the U. S. Department of Commerce or
  103.  * any other agency or department of the United States Government.  In the
  104.  * event Licensee exports any such software from the United States or
  105.  * re-exports any such software from a foreign destination, Licensee shall
  106.  * ensure that the distribution and export/re-export of the software is in
  107.  * compliance with all laws, regulations, orders, or other restrictions of the
  108.  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  109.  * any of its subsidiaries will export/re-export any technical data, process,
  110.  * software, or service, directly or indirectly, to any country for which the
  111.  * United States government or any agency thereof requires an export license,
  112.  * other governmental approval, or letter of assurance, without first obtaining
  113.  * such license, approval or letter.
  114.  *
  115.  *****************************************************************************/
  116.  
  117.  
  118. #include <stdio.h>
  119. #include <stdlib.h>
  120. #include <string.h>
  121. #include <io.h>
  122.  
  123. #include <acpi.h>
  124.  
  125. typedef struct ExternalFindInfo
  126. {
  127.     struct _finddata_t          DosInfo;
  128.     char                        *FullWildcardSpec;
  129.     long                        FindHandle;
  130.     char                        State;
  131.     char                        RequestedFileType;
  132.  
  133. } EXTERNAL_FIND_INFO;
  134.  
  135.  
  136. /*******************************************************************************
  137.  *
  138.  * FUNCTION:    AcpiOsOpenDirectory
  139.  *
  140.  * PARAMETERS:  DirPathname         - Full pathname to the directory
  141.  *              WildcardSpec        - string of the form "*.c", etc.
  142.  *              RequestedFileType   - Either a directory or normal file
  143.  *
  144.  * RETURN:      A directory "handle" to be used in subsequent search operations.
  145.  *              NULL returned on failure.
  146.  *
  147.  * DESCRIPTION: Open a directory in preparation for a wildcard search
  148.  *
  149.  ******************************************************************************/
  150.  
  151. void *
  152. AcpiOsOpenDirectory (
  153.     char                    *DirPathname,
  154.     char                    *WildcardSpec,
  155.     char                    RequestedFileType)
  156. {
  157.     long                    FindHandle;
  158.     char                    *FullWildcardSpec;
  159.     EXTERNAL_FIND_INFO      *SearchInfo;
  160.  
  161.  
  162.     /* No directory path means "use current directory" - use a dot */
  163.  
  164.     if (!DirPathname || strlen (DirPathname) == 0)
  165.     {
  166.         DirPathname = ".";
  167.     }
  168.  
  169.     /* Allocate the info struct that will be returned to the caller */
  170.  
  171.     SearchInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
  172.     if (!SearchInfo)
  173.     {
  174.         return NULL;
  175.     }
  176.  
  177.     /* Allocate space for the full wildcard path */
  178.  
  179.     FullWildcardSpec = calloc (strlen (DirPathname) + strlen (WildcardSpec) + 2, 1);
  180.     if (!FullWildcardSpec)
  181.     {
  182.         printf ("Could not allocate buffer for wildcard pathname\n");
  183.         return NULL;
  184.     }
  185.  
  186.     /* Create the full wildcard path */
  187.  
  188.     strcpy (FullWildcardSpec, DirPathname);
  189.     strcat (FullWildcardSpec, "/");
  190.     strcat (FullWildcardSpec, WildcardSpec);
  191.  
  192.     /* Initialize the find functions, get first match */
  193.  
  194.     FindHandle = _findfirst (FullWildcardSpec, &SearchInfo->DosInfo);
  195.     if (FindHandle == -1)
  196.     {
  197.         /* Failure means that no match was found */
  198.  
  199.         free (FullWildcardSpec);
  200.         free (SearchInfo);
  201.         return NULL;
  202.     }
  203.  
  204.     /* Save the info in the return structure */
  205.  
  206.     SearchInfo->RequestedFileType = RequestedFileType;
  207.     SearchInfo->FullWildcardSpec = FullWildcardSpec;
  208.     SearchInfo->FindHandle = FindHandle;
  209.     SearchInfo->State = 0;
  210.     return (SearchInfo);
  211. }
  212.  
  213.  
  214. /*******************************************************************************
  215.  *
  216.  * FUNCTION:    AcpiOsGetNextFilename
  217.  *
  218.  * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
  219.  *
  220.  * RETURN:      Next filename matched.  NULL if no more matches.
  221.  *
  222.  * DESCRIPTION: Get the next file in the directory that matches the wildcard
  223.  *              specification.
  224.  *
  225.  ******************************************************************************/
  226.  
  227. char *
  228. AcpiOsGetNextFilename (
  229.     void                    *DirHandle)
  230. {
  231.     EXTERNAL_FIND_INFO      *SearchInfo = DirHandle;
  232.     int                     Status;
  233.     char                    FileTypeNotMatched = 1;
  234.  
  235.  
  236.     /*
  237.      * Loop while we have matched files but not found any files of
  238.      * the requested type.
  239.      */
  240.     while (FileTypeNotMatched)
  241.     {
  242.         /* On the first call, we already have the first match */
  243.  
  244.         if (SearchInfo->State == 0)
  245.         {
  246.             /* No longer the first match */
  247.  
  248.             SearchInfo->State = 1;
  249.         }
  250.         else
  251.         {
  252.             /* Get the next match */
  253.  
  254.             Status = _findnext (SearchInfo->FindHandle, &SearchInfo->DosInfo);
  255.             if (Status != 0)
  256.             {
  257.                 return NULL;
  258.             }
  259.         }
  260.  
  261.         /*
  262.          * Found a match, now check to make sure that the file type
  263.          * matches the requested file type (directory or normal file)
  264.          *
  265.          * NOTE: use of the attrib field saves us from doing a very
  266.          * expensive stat() on the file!
  267.          */
  268.         switch (SearchInfo->RequestedFileType)
  269.         {
  270.         case REQUEST_FILE_ONLY:
  271.  
  272.             /* Anything other than A_SUBDIR is OK */
  273.  
  274.             if (!(SearchInfo->DosInfo.attrib & _A_SUBDIR))
  275.             {
  276.                 FileTypeNotMatched = 0;
  277.             }
  278.             break;
  279.  
  280.         case REQUEST_DIR_ONLY:
  281.  
  282.             /* Must have A_SUBDIR bit set */
  283.  
  284.             if (SearchInfo->DosInfo.attrib & _A_SUBDIR)
  285.             {
  286.                 FileTypeNotMatched = 0;
  287.             }
  288.             break;
  289.  
  290.         default:
  291.             return NULL;
  292.         }
  293.     }
  294.  
  295.     return (SearchInfo->DosInfo.name);
  296. }
  297.  
  298.  
  299. /*******************************************************************************
  300.  *
  301.  * FUNCTION:    AcpiOsCloseDirectory
  302.  *
  303.  * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
  304.  *
  305.  * RETURN:      None.
  306.  *
  307.  * DESCRIPTION: Close the open directory and cleanup.
  308.  *
  309.  ******************************************************************************/
  310.  
  311. void
  312. AcpiOsCloseDirectory (
  313.     void                    *DirHandle)
  314. {
  315.     EXTERNAL_FIND_INFO      *SearchInfo = DirHandle;
  316.  
  317.  
  318.     /* Close the directory and free allocations */
  319.  
  320.     _findclose (SearchInfo->FindHandle);
  321.     free (SearchInfo->FullWildcardSpec);
  322.     free (DirHandle);
  323. }
  324.  
  325.