From: kay.sievers@vrfy.org <kay.sievers@vrfy.org>
Date: Sun, 27 Mar 2005 22:18:49 +0000 (+0200)
Subject: [PATCH] klibc: strlcpy/strlcat - don't alter destination if size == 0
X-Git-Tag: 057~23
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=4f8d44c220d811352b63c65b5a66403339005aac

[PATCH] klibc: strlcpy/strlcat - don't alter destination if size == 0
---

diff --git a/klibc/klibc/strlcat.c b/klibc/klibc/strlcat.c
index f397857e7..fdd72ac39 100644
--- a/klibc/klibc/strlcat.c
+++ b/klibc/klibc/strlcat.c
@@ -26,7 +26,8 @@ size_t strlcat(char *dst, const char *src, size_t size)
     bytes++;
   }
 
-  *q = '\0';
+  if (size)
+    *q = '\0';
   return bytes;
 }
 
diff --git a/klibc/klibc/strlcpy.c b/klibc/klibc/strlcpy.c
index 8b36c43c0..9e7b6bf91 100644
--- a/klibc/klibc/strlcpy.c
+++ b/klibc/klibc/strlcpy.c
@@ -19,7 +19,8 @@ size_t strlcpy(char *dst, const char *src, size_t size)
     bytes++;
   }
 
-  *q = '\0';
+  if (size)
+    *q = '\0';
   return bytes;
 }
 
diff --git a/udev_libc_wrapper.c b/udev_libc_wrapper.c
index 23cb7b431..d69f2ac48 100644
--- a/udev_libc_wrapper.c
+++ b/udev_libc_wrapper.c
@@ -58,7 +58,8 @@ size_t strlcpy(char *dst, const char *src, size_t size)
 		bytes++;
 	}
 
-	*q = '\0';
+	if (size)
+		*q = '\0';
 	return bytes;
 }
 
@@ -82,7 +83,8 @@ size_t strlcat(char *dst, const char *src, size_t size)
 		bytes++;
 	}
 
-	*q = '\0';
+	if (size)
+		*q = '\0';
 	return bytes;
 }
 #endif /* __OWN_STRLCPYCAT__ */