1  /* Work around rmdir bugs.
       2  
       3     Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2023 Free Software
       4     Foundation, Inc.
       5  
       6     This file is free software: you can redistribute it and/or modify
       7     it under the terms of the GNU Lesser General Public License as
       8     published by the Free Software Foundation; either version 2.1 of the
       9     License, or (at your option) any later version.
      10  
      11     This file is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14     GNU Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public License
      17     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <config.h>
      20  
      21  #include <unistd.h>
      22  
      23  #include <errno.h>
      24  #include <string.h>
      25  
      26  #include "filename.h"
      27  
      28  #undef rmdir
      29  #if defined _WIN32 && !defined __CYGWIN__
      30  # define rmdir _rmdir
      31  #endif
      32  
      33  /* Remove directory DIR.
      34     Return 0 if successful, -1 if not.  */
      35  
      36  int
      37  rpl_rmdir (char const *dir)
      38  {
      39    /* Work around cygwin 1.5.x bug where rmdir("dir/./") succeeds.  */
      40    size_t len = strlen (dir);
      41    int result;
      42    while (len && ISSLASH (dir[len - 1]))
      43      len--;
      44    if (len && dir[len - 1] == '.' && (1 == len || ISSLASH (dir[len - 2])))
      45      {
      46        errno = EINVAL;
      47        return -1;
      48      }
      49    result = rmdir (dir);
      50    /* Work around mingw bug, where rmdir("file/") fails with EINVAL
      51       instead of ENOTDIR.  We've already filtered out trailing ., the
      52       only reason allowed by POSIX for EINVAL.  */
      53    if (result == -1 && errno == EINVAL)
      54      errno = ENOTDIR;
      55    return result;
      56  }