From bfb8f8f6ea438e632e808868c44af2bff196cc18 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 8 Mar 2001 07:33:05 +0000
Subject: Add strnlen

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

(limited to 'libc/string')

diff --git a/libc/string/Makefile b/libc/string/Makefile
index 02a69dfbf..6823f2759 100644
--- a/libc/string/Makefile
+++ b/libc/string/Makefile
@@ -27,7 +27,7 @@ LIBC=$(TOPDIR)libc.a
 MSRC=string.c
 MOBJ=strlen.o strcat.o strcpy.o strchr.o strcmp.o strncat.o strncpy.o \
 	strncmp.o strrchr.o strdup.o memcpy.o memccpy.o memset.o \
-	memmove.o memcmp.o memchr.o ffs.o
+	memmove.o memcmp.o memchr.o ffs.o strnlen.o
 
 MSRC1=index.c
 MOBJ1=index.o rindex.o
diff --git a/libc/string/string.c b/libc/string/string.c
index f77cf4c69..29ac83a24 100644
--- a/libc/string/string.c
+++ b/libc/string/string.c
@@ -23,6 +23,16 @@ size_t strlen(const char *str)
 }
 #endif
 
+/********************** Function strnlen ************************************/
+
+#ifdef L_strnlen
+size_t strnlen (const char *string, size_t maxlen)
+{
+	const char *end = memchr (string, '\0', maxlen);
+	return end ? end - string : maxlen;
+}
+#endif
+
 /********************** Function strcat ************************************/
 
 #ifdef L_strcat
-- 
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