[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/isdirectory.c b/ap/app/busybox/src/libbb/isdirectory.c
new file mode 100644
index 0000000..ba6c52c
--- /dev/null
+++ b/ap/app/busybox/src/libbb/isdirectory.c
@@ -0,0 +1,31 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
+ * Permission has been granted to redistribute this code under GPL.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include <sys/stat.h>
+#include "libbb.h"
+
+/*
+ * Return TRUE if fileName is a directory.
+ * Nonexistent files return FALSE.
+ */
+int FAST_FUNC is_directory(const char *fileName, int followLinks)
+{
+	int status;
+	struct stat statBuf;
+
+	if (followLinks)
+		status = stat(fileName, &statBuf);
+	else
+		status = lstat(fileName, &statBuf);
+
+	status = (status == 0 && S_ISDIR(statBuf.st_mode));
+
+	return status;
+}