1 files changed, 42 insertions, 0 deletions
diff --git a/gnu/usr.bin/grep/isdir.c b/gnu/usr.bin/grep/isdir.c
new file mode 100644
index 000000000000..01cf8d5e4af2
--- /dev/null
+++ b/gnu/usr.bin/grep/isdir.c
@@ -0,0 +1,42 @@
+/* isdir.c -- determine whether a directory exists
+   Copyright (C) 1990, 1998 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 2, 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, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#if STAT_MACROS_BROKEN
+# undef S_ISDIR
+#endif
+
+#if !defined S_ISDIR && defined S_IFDIR
+# define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR)
+#endif
+
+/* If PATH is an existing directory or symbolic link to a directory,
+   return nonzero, else 0.  */
+
+int
+isdir (const char *path)
+{
+  struct stat stats;
+
+  return stat (path, &stats) == 0 && S_ISDIR (stats.st_mode);
+}