1 files changed, 27 insertions, 0 deletions
diff --git a/libbb/safe_strncpy.c b/libbb/safe_strncpy.c
new file mode 100644
index 0000000..4acd976
--- /dev/null
+++ b/libbb/safe_strncpy.c
@@ -0,0 +1,27 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* Like strncpy but make sure the resulting string is always 0 terminated. */
+char* FAST_FUNC safe_strncpy(char *dst, const char *src, size_t size)
+{
+	if (!size) return dst;
+	dst[--size] = '\0';
+	return strncpy(dst, src, size);
+}
+
+/* Like strcpy but can copy overlapping strings. */
+void FAST_FUNC overlapping_strcpy(char *dst, const char *src)
+{
+	while ((*dst = *src) != '\0') {
+		dst++;
+		src++;
+	}
+}