1  /* Test for ftw function searching in root directory.
       2     Copyright (C) 2001-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <ftw.h>
      20  #include <mcheck.h>
      21  #include <stdio.h>
      22  #include <string.h>
      23  
      24  
      25  int result;
      26  int cnt;
      27  int sawroot;
      28  
      29  
      30  static int
      31  callback (const char *fname, const struct stat *st, int flag)
      32  {
      33    if (++cnt >= 10)
      34      return 1;
      35  
      36    printf ("%d: \"%s\" -> ", cnt, fname);
      37    if (strcmp (fname, "/") == 0 && sawroot)
      38      {
      39        puts ("root directory reported twice");
      40        result = 1;
      41      }
      42    else if (fname[0] != '/')
      43      {
      44        puts ("missing '/' as first character");
      45        result = 1;
      46      }
      47    else if (fname[1] == '/')
      48      {
      49        puts ("double '/' at beginning");
      50        result = 1;
      51      }
      52    else
      53      {
      54        puts ("OK");
      55        sawroot |= strcmp (fname, "/") == 0;
      56      }
      57  
      58    return 0;
      59  }
      60  
      61  
      62  int
      63  main (void)
      64  {
      65    mtrace ();
      66  
      67    ftw ("/", callback, 10);
      68  
      69    if (! sawroot)
      70      {
      71        puts ("root directory wasn't reported");
      72        result = 1;
      73      }
      74  
      75    return result;
      76  }