1 files changed, 7 insertions, 0 deletions
diff --git a/src/string/strnlen.c b/src/string/strnlen.c
new file mode 100644
index 00000000..6442eb79
--- /dev/null
+++ b/src/string/strnlen.c
@@ -0,0 +1,7 @@
+#include <string.h>
+
+size_t strnlen(const char *s, size_t n)
+{
+	const char *p = memchr(s, 0, n);
+	return p ? p-s : n;
+}