From 8a0bc0937e29845a84b09ebfe29ad8146e3f2686 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Fri, 31 Jan 2020 20:24:53 +0900
Subject: [PATCH] Add strlen() function to userspace libc

---
 libc/Makefile |  2 +-
 libc/string.c | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 libc/string.c

diff --git a/libc/Makefile b/libc/Makefile
index 5029bad..f10ed46 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -1,5 +1,5 @@
 OUTPUT = libc.a
-OBJECTS = syscall.o
+OBJECTS = syscall.o string.o
 PHONY = clean
 INCLUDES = -I../include
 CFLAGS = -m32 -Wall -nostdlib -nodefaultlibs -nostartfiles -ffreestanding $(INCLUDES)
diff --git a/libc/string.c b/libc/string.c
new file mode 100644
index 0000000..5ae3b1d
--- /dev/null
+++ b/libc/string.c
@@ -0,0 +1,10 @@
+#include <sys/types.h>
+
+size_t strlen(const char *s)
+{
+	size_t ret_val;
+
+	for(ret_val = 0; s[ret_val]; ret_val++);
+
+	return(ret_val);
+}
-- 
2.47.3