[PATCH for-next 1/7] block/rnbd-clt: Get rid of warning regarding size argument in strlcpy

[Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>]

From: Md Haris Iqbal <haris.iqbal@xxxxxxxxxxxxxxx>

The kernel test robot triggerred the following warning,

>> drivers/block/rnbd/rnbd-clt.c:1397:42: warning: size argument in
'strlcpy' call appears to be size of the source; expected the size of the
destination [-Wstrlcpy-strlcat-size]
	strlcpy(dev->pathname, pathname, strlen(pathname) + 1);
					      ~~~~~~~^~~~~~~~~~~~~

To get rid of the above warning, use a len variable for doing kzalloc and
then strlcpy.

Fixes: 64e8a6ece1a5 ("block/rnbd-clt: Dynamically alloc buffer for pathname & blk_symlink_name")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Md Haris Iqbal <haris.iqbal@xxxxxxxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
---
 drivers/block/rnbd/rnbd-clt.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index a199b190c73d..62b77b5dc061 100644
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -1365,7 +1365,7 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 				      const char *pathname)
 {
 	struct rnbd_clt_dev *dev;
-	int ret;
+	int len, ret;
 
 	dev = kzalloc_node(sizeof(*dev), GFP_KERNEL, NUMA_NO_NODE);
 	if (!dev)
@@ -1388,12 +1388,13 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 		goto out_queues;
 	}
 
-	dev->pathname = kzalloc(strlen(pathname) + 1, GFP_KERNEL);
+	len = strlen(pathname) + 1;
+	dev->pathname = kzalloc(len, GFP_KERNEL);
 	if (!dev->pathname) {
 		ret = -ENOMEM;
 		goto out_queues;
 	}
-	strlcpy(dev->pathname, pathname, strlen(pathname) + 1);
+	strlcpy(dev->pathname, pathname, len);
 
 	dev->clt_device_id	= ret;
 	dev->sess		= sess;
-- 
2.25.1