lib/rewinddir.c

   1 /* Restart reading the entries of a directory from the beginning.
   2    Copyright (C) 2011-2018 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <dirent.h>
  21
  22 #include <errno.h>
  23
  24 #include "dirent-private.h"
  25
  26 void
  27 rewinddir (DIR *dirp)
  28 {
  29   /* Like in closedir().  */
  30   if (dirp->current != INVALID_HANDLE_VALUE)
  31     FindClose (dirp->current);
  32
  33   /* Like in opendir().  */
  34   dirp->status = -1;
  35   dirp->current = FindFirstFile (dirp->dir_name_mask, &dirp->entry);
  36   if (dirp->current == INVALID_HANDLE_VALUE)
  37     {
  38       switch (GetLastError ())
  39         {
  40         case ERROR_FILE_NOT_FOUND:
  41           dirp->status = -2;
  42           break;
  43         default:
  44           /* Save the error code for the next readdir() call.  */
  45           dirp->status = ENOENT;
  46           break;
  47         }
  48     }
  49 }