X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=lib%2Frmdir.c;fp=lib%2Frmdir.c;h=36a61180d4b54ecaa692d96e76138614d14f9c36;hb=a2016c1de6e4884f6c8ed5cc498f3bf821c25ca4;hp=0000000000000000000000000000000000000000;hpb=c7e61475680fa226bd9b8bdd469cd66914e630f5;p=debian%2Fgzip

diff --git a/lib/rmdir.c b/lib/rmdir.c
new file mode 100644
index 0000000..36a6118
--- /dev/null
+++ b/lib/rmdir.c
@@ -0,0 +1,99 @@
+/* Work around rmdir bugs.
+
+   Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2010 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#undef rmdir
+
+/* Remove directory DIR.
+   Return 0 if successful, -1 if not.  */
+
+int
+rpl_rmdir (char const *dir)
+{
+#if HAVE_RMDIR
+  /* Work around cygwin 1.5.x bug where rmdir("dir/./") succeeds.  */
+  size_t len = strlen (dir);
+  int result;
+  while (len && ISSLASH (dir[len - 1]))
+    len--;
+  if (len && dir[len - 1] == '.' && (1 == len || ISSLASH (dir[len - 2])))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  result = rmdir (dir);
+  /* Work around mingw bug, where rmdir("file/") fails with EINVAL
+     instead of ENOTDIR.  We've already filtered out trailing ., the
+     only reason allowed by POSIX for EINVAL.  */
+  if (result == -1 && errno == EINVAL)
+    errno = ENOTDIR;
+  return result;
+
+#else /* !HAVE_RMDIR */
+  /* rmdir adapted from GNU tar.  FIXME: Delete this implementation in
+     2010 if no one reports a system with missing rmdir.  */
+  pid_t cpid;
+  int status;
+  struct stat statbuf;
+
+  if (stat (dir, &statbuf) != 0)
+    return -1;                  /* errno already set */
+
+  if (!S_ISDIR (statbuf.st_mode))
+    {
+      errno = ENOTDIR;
+      return -1;
+    }
+
+  cpid = fork ();
+  switch (cpid)
+    {
+    case -1:                    /* cannot fork */
+      return -1;                /* errno already set */
+
+    case 0:                     /* child process */
+      execl ("/bin/rmdir", "rmdir", dir, (char *) 0);
+      _exit (1);
+
+    default:                    /* parent process */
+
+      /* Wait for kid to finish.  */
+
+      while (wait (&status) != cpid)
+        /* Do nothing.  */ ;
+
+      if (status)
+        {
+
+          /* /bin/rmdir failed.  */
+
+          errno = EIO;
+          return -1;
+        }
+      return 0;
+    }
+#endif /* !HAVE_RMDIR */
+}