RDMA/irdma: Replace deprecated strncpy

`strncpy` is deprecated for use on NUL-terminated destination strings [1]
and as such we should prefer more robust and less ambiguous string
interfaces.

A suitable replacement is `strscpy_pad` due to the fact that it
guarantees NUL-termination on the destination buffer.

It is unclear to me whether `i40iw_client.name` requires NUL-padding but
have opted to keep the NUL-padding behavior that strncpy provides to
ensure no functional change.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20230921-strncpy-drivers-infiniband-hw-irdma-i40iw_if-c-v1-1-22d87aef7186@google.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/irdma/i40iw_if.c b/drivers/infiniband/hw/irdma/i40iw_if.c
index 91dc4e994eeef6f78b7896fd3680c9a590e731bd..cc50a70703713cc2a55580c049d81b3c75109d3f 100644 (file)
--- a/drivers/infiniband/hw/irdma/i40iw_if.c
+++ b/drivers/infiniband/hw/irdma/i40iw_if.c
@@ -186,7 +186,7 @@ static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
                                                               aux_dev);
        struct i40e_info *cdev_info = i40e_adev->ldev;
 
-       strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
+       strscpy_pad(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
        i40e_client_device_register(cdev_info, &i40iw_client);
 
        return 0;