1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library 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 GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <stddef.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  #include <dirent.h>
      23  
      24  
      25  static int
      26  test (const char *name)
      27  {
      28    DIR *dirp;
      29    struct dirent *entp;
      30    int retval = 0;
      31  
      32    puts (name);
      33  
      34    dirp = opendir (name);
      35    if (dirp == NULL)
      36      {
      37        perror ("opendir");
      38        return 1;
      39      }
      40  
      41    errno = 0;
      42    while ((entp = readdir (dirp)) != NULL)
      43      printf ("%s\tfile number %lu\n",
      44  	    entp->d_name, (unsigned long int) entp->d_fileno);
      45  
      46    if (errno)
      47      {
      48        perror ("readdir");
      49        retval = 1;
      50      }
      51  
      52    if (closedir (dirp) < 0)
      53      {
      54        perror ("closedir");
      55        retval = 1;
      56      }
      57  
      58    return retval;
      59  }
      60  
      61  int
      62  main (int argc, char **argv)
      63  {
      64    int retval = 0;
      65    --argc;
      66    ++argv;
      67  
      68    if (argc == 0)
      69      retval = test (".");
      70    else
      71      while (argc-- > 0)
      72        retval |= test (*argv++);
      73  
      74    return retval;
      75  }