gnulib/import/rmdir.c

   1 /* Work around rmdir bugs.
   2
   3    Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2022 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 }