CODING_STYLE: add section about using strlcat()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
lxc · Dec 10, 2018 · c13a1a0 · c13a1a0
1 parent 1828469
commit c13a1a0
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/CODING_STYLE.md b/CODING_STYLE.md
@@ -672,3 +672,13 @@ string.
 Unless you have a valid reason to accept truncation you must check whether
 truncation has occurred, treat it as an error, and handle the error
 appropriately.
+
+#### Use `strlcat()` instead of `strncat()`
+
+When concatenating strings always use `strlcat()` instead of `strncat()`. The
+advantage of `strlcat()` is that it will always append a `\0` byte to the
+string.
+
+Unless you have a valid reason to accept truncation you must check whether
+truncation has occurred, treat it as an error, and handle the error
+appropriately.