dlm: config: using strlcpy instead of strncpy

for NUL terminated string, need alway set '\0' in the end.

Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index 7d58d5b112b5..76feb4b60fa6 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -138,8 +138,9 @@ static ssize_t cluster_cluster_name_read(struct dlm_cluster *cl, char *buf)
 static ssize_t cluster_cluster_name_write(struct dlm_cluster *cl,
                                           const char *buf, size_t len)
 {
-        strncpy(dlm_config.ci_cluster_name, buf, DLM_LOCKSPACE_LEN);
-        strncpy(cl->cl_cluster_name, buf, DLM_LOCKSPACE_LEN);
+        strlcpy(dlm_config.ci_cluster_name, buf,
+                                sizeof(dlm_config.ci_cluster_name));
+        strlcpy(cl->cl_cluster_name, buf, sizeof(cl->cl_cluster_name));
         return len;
 }