diff mbox series

RDMA/irdma: replace deprecated strncpy

Message ID 20230921-strncpy-drivers-infiniband-hw-irdma-i40iw_if-c-v1-1-22d87aef7186@google.com
State New
Headers
Series RDMA/irdma: replace deprecated strncpy |

Commit Message

Justin Stitt Sept. 21, 2023, 7:36 a.m. UTC 
  `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 [1]
Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Justin Stitt <justinstitt@google.com>
---
Note: build-tested
---
 drivers/infiniband/hw/irdma/i40iw_if.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


---
base-commit: 2cf0f715623872823a72e451243bbf555d10d032
change-id: 20230921-strncpy-drivers-infiniband-hw-irdma-i40iw_if-c-6330fb0507db

Best regards,
--
Justin Stitt <justinstitt@google.com>

Comments

Leon Romanovsky Sept. 22, 2023, 10:29 a.m. UTC | #1 
On Thu, 21 Sep 2023 07:36:26 +0000, Justin Stitt wrote:
> `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.
> 
> [...]

Applied, thanks!

[1/1] RDMA/irdma: replace deprecated strncpy
      https://git.kernel.org/rdma/rdma/c/f0cc82ca116f5b

Best regards,
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/irdma/i40iw_if.c b/drivers/infiniband/hw/irdma/i40iw_if.c
index 4053ead32416..adbea33bf5b7 100644
--- 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;