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  1.  
  2. /******************************************************************************
  3.  *
  4.  * Module Name: osunixdir - Unix directory access interfaces
  5.  *
  6.  *****************************************************************************/
  7.  
  8. /******************************************************************************
  9.  *
  10.  * 1. Copyright Notice
  11.  *
  12.  * Some or all of this work - Copyright (c) 1999 - 2011, 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 <dirent.h>
  122. #include <fnmatch.h>
  123. #include <ctype.h>
  124. #include <sys/stat.h>
  125.  
  126. #include "acpisrc.h"
  127.  
  128. /*
  129.  * Allocated structure returned from OsOpenDirectory
  130.  */
  131. typedef struct ExternalFindInfo
  132. {
  133.     char                        *DirPathname;
  134.     DIR                         *DirPtr;
  135.     char                        temp_buffer[128];
  136.     char                        *WildcardSpec;
  137.     char                        RequestedFileType;
  138.  
  139. } EXTERNAL_FIND_INFO;
  140.  
  141.  
  142. /*******************************************************************************
  143.  *
  144.  * FUNCTION:    AcpiOsOpenDirectory
  145.  *
  146.  * PARAMETERS:  DirPathname         - Full pathname to the directory
  147.  *              WildcardSpec        - string of the form "*.c", etc.
  148.  *
  149.  * RETURN:      A directory "handle" to be used in subsequent search operations.
  150.  *              NULL returned on failure.
  151.  *
  152.  * DESCRIPTION: Open a directory in preparation for a wildcard search
  153.  *
  154.  ******************************************************************************/
  155.  
  156. void *
  157. AcpiOsOpenDirectory (
  158.     char                    *DirPathname,
  159.     char                    *WildcardSpec,
  160.     char                    RequestedFileType)
  161. {
  162.     EXTERNAL_FIND_INFO      *ExternalInfo;
  163.     DIR                     *dir;
  164.  
  165.  
  166.     /* Allocate the info struct that will be returned to the caller */
  167.  
  168.     ExternalInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
  169.     if (!ExternalInfo)
  170.     {
  171.         return (NULL);
  172.     }
  173.  
  174.     /* Get the directory stream */
  175.  
  176.     dir = opendir (DirPathname);
  177.     if (!dir)
  178.     {
  179.         free (ExternalInfo);
  180.         return (NULL);
  181.     }
  182.  
  183.     /* Save the info in the return structure */
  184.  
  185.     ExternalInfo->WildcardSpec = WildcardSpec;
  186.     ExternalInfo->RequestedFileType = RequestedFileType;
  187.     ExternalInfo->DirPathname = DirPathname;
  188.     ExternalInfo->DirPtr = dir;
  189.     return (ExternalInfo);
  190. }
  191.  
  192.  
  193. /*******************************************************************************
  194.  *
  195.  * FUNCTION:    AcpiOsGetNextFilename
  196.  *
  197.  * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
  198.  *
  199.  * RETURN:      Next filename matched.  NULL if no more matches.
  200.  *
  201.  * DESCRIPTION: Get the next file in the directory that matches the wildcard
  202.  *              specification.
  203.  *
  204.  ******************************************************************************/
  205.  
  206. char *
  207. AcpiOsGetNextFilename (
  208.     void                    *DirHandle)
  209. {
  210.     EXTERNAL_FIND_INFO      *ExternalInfo = DirHandle;
  211.     struct dirent           *dir_entry;
  212.     char                    *temp_str;
  213.     int                     str_len;
  214.     struct stat             temp_stat;
  215.     int                     err;
  216.  
  217.  
  218.     while ((dir_entry = readdir (ExternalInfo->DirPtr)))
  219.     {
  220.         if (!fnmatch (ExternalInfo->WildcardSpec, dir_entry->d_name, 0))
  221.         {
  222.             if (dir_entry->d_name[0] == '.')
  223.             {
  224.                 continue;
  225.             }
  226.  
  227.             str_len = strlen (dir_entry->d_name) +
  228.                         strlen (ExternalInfo->DirPathname) + 2;
  229.  
  230.             temp_str = calloc (str_len, 1);
  231.             if (!temp_str)
  232.             {
  233.                 printf ("Could not allocate buffer for temporary string\n");
  234.                 return (NULL);
  235.             }
  236.  
  237.             strcpy (temp_str, ExternalInfo->DirPathname);
  238.             strcat (temp_str, "/");
  239.             strcat (temp_str, dir_entry->d_name);
  240.  
  241.             err = stat (temp_str, &temp_stat);
  242.             free (temp_str);
  243.             if (err == -1)
  244.             {
  245.                 printf ("stat() error - should not happen\n");
  246.                 return (NULL);
  247.             }
  248.  
  249.             if ((S_ISDIR (temp_stat.st_mode)
  250.                 && (ExternalInfo->RequestedFileType == REQUEST_DIR_ONLY))
  251.                ||
  252.                ((!S_ISDIR (temp_stat.st_mode)
  253.                 && ExternalInfo->RequestedFileType == REQUEST_FILE_ONLY)))
  254.             {
  255.                 /* copy to a temp buffer because dir_entry struct is on the stack */
  256.  
  257.                 strcpy (ExternalInfo->temp_buffer, dir_entry->d_name);
  258.                 return (ExternalInfo->temp_buffer);
  259.             }
  260.         }
  261.     }
  262.  
  263.     return (NULL);
  264. }
  265.  
  266.  
  267. /*******************************************************************************
  268.  *
  269.  * FUNCTION:    AcpiOsCloseDirectory
  270.  *
  271.  * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
  272.  *
  273.  * RETURN:      None.
  274.  *
  275.  * DESCRIPTION: Close the open directory and cleanup.
  276.  *
  277.  ******************************************************************************/
  278.  
  279. void
  280. AcpiOsCloseDirectory (
  281.     void                    *DirHandle)
  282. {
  283.     EXTERNAL_FIND_INFO      *ExternalInfo = DirHandle;
  284.  
  285.  
  286.     /* Close the directory and free allocations */
  287.  
  288.     closedir (ExternalInfo->DirPtr);
  289.     free (DirHandle);
  290. }
  291.  
  292.  
  293. /* Other functions acpisrc uses but that aren't standard on Unix */
  294.  
  295. /*******************************************************************************
  296.  *
  297.  * FUNCTION:    strlwr
  298.  *
  299.  * PARAMETERS:  str                 - String to be lowercased.
  300.  *
  301.  * RETURN:      str.
  302.  *
  303.  * DESCRIPTION: Lowercase a string in-place.
  304.  *
  305.  ******************************************************************************/
  306.  
  307. char *
  308. strlwr  (
  309.    char         *str)
  310. {
  311.     int         length;
  312.     int         i;
  313.  
  314.  
  315.     length = strlen (str);
  316.  
  317.     for (i = 0; i < length; i++)
  318.     {
  319.         str[i] = tolower ((int) str[i]);
  320.     }
  321.  
  322.     return (str);
  323. }
  324.