1/* Work around rmdir bugs.
2
3   Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2010 Free Software
4   Foundation, Inc.
5
6   This program is free software: you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 3 of the License, or
9   (at your option) any later version.
10
11   This program 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 General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
18
19#include <config.h>
20
21#include <unistd.h>
22
23#include <errno.h>
24#include <string.h>
25#include <sys/stat.h>
26#include <sys/types.h>
27
28#undef rmdir
29
30/* Remove directory DIR.
31   Return 0 if successful, -1 if not.  */
32
33int
34rpl_rmdir (char const *dir)
35{
36#if HAVE_RMDIR
37  /* Work around cygwin 1.5.x bug where rmdir("dir/./") succeeds.  */
38  size_t len = strlen (dir);
39  int result;
40  while (len && ISSLASH (dir[len - 1]))
41    len--;
42  if (len && dir[len - 1] == '.' && (1 == len || ISSLASH (dir[len - 2])))
43    {
44      errno = EINVAL;
45      return -1;
46    }
47  result = rmdir (dir);
48  /* Work around mingw bug, where rmdir("file/") fails with EINVAL
49     instead of ENOTDIR.  We've already filtered out trailing ., the
50     only reason allowed by POSIX for EINVAL.  */
51  if (result == -1 && errno == EINVAL)
52    errno = ENOTDIR;
53  return result;
54
55#else /* !HAVE_RMDIR */
56  /* rmdir adapted from GNU tar.  FIXME: Delete this implementation in
57     2010 if no one reports a system with missing rmdir.  */
58  pid_t cpid;
59  int status;
60  struct stat statbuf;
61
62  if (stat (dir, &statbuf) != 0)
63    return -1;                  /* errno already set */
64
65  if (!S_ISDIR (statbuf.st_mode))
66    {
67      errno = ENOTDIR;
68      return -1;
69    }
70
71  cpid = fork ();
72  switch (cpid)
73    {
74    case -1:                    /* cannot fork */
75      return -1;                /* errno already set */
76
77    case 0:                     /* child process */
78      execl ("/bin/rmdir", "rmdir", dir, (char *) 0);
79      _exit (1);
80
81    default:                    /* parent process */
82
83      /* Wait for kid to finish.  */
84
85      while (wait (&status) != cpid)
86        /* Do nothing.  */ ;
87
88      if (status)
89        {
90
91          /* /bin/rmdir failed.  */
92
93          errno = EIO;
94          return -1;
95        }
96      return 0;
97    }
98#endif /* !HAVE_RMDIR */
99}
100