1 files changed, 11 insertions, 0 deletions
diff --git a/lib/libc/string/strnlen.c b/lib/libc/string/strnlen.c
new file mode 100644
index 00000000..11da22ec
--- /dev/null
+++ b/lib/libc/string/strnlen.c
@@ -0,0 +1,11 @@
+#include <stddef.h>
+
+size_t strnlen(const char *s, size_t maxlen)
+{
+	size_t len = 0;
+
+	while (*s++ && len < maxlen)
+		len++;
+
+	return len;
+}