Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Thu, 05 Oct 2023 21:55:06 +0000 | Subject | [PATCH] liquidio: replace deprecated strncpy with strscpy | From | Justin Stitt <> |
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`strncpy` is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces.
NUL-padding is not required as rep_cfg is memset to 0: | memset(&rep_cfg, 0, sizeof(rep_cfg));
A suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] 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 only. --- drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c index 600de587d7a9..aa6c0dfb6f1c 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c @@ -638,7 +638,8 @@ lio_vf_rep_netdev_event(struct notifier_block *nb, memset(&rep_cfg, 0, sizeof(rep_cfg)); rep_cfg.req_type = LIO_VF_REP_REQ_DEVNAME; rep_cfg.ifidx = vf_rep->ifidx; - strncpy(rep_cfg.rep_name.name, ndev->name, LIO_IF_NAME_SIZE); + strscpy(rep_cfg.rep_name.name, ndev->name, + sizeof(rep_cfg.rep_name.name)); ret = lio_vf_rep_send_soft_command(oct, &rep_cfg, sizeof(rep_cfg), NULL, 0); --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231005-strncpy-drivers-net-ethernet-cavium-liquidio-lio_vf_rep-c-b23567b42939 Best regards, -- Justin Stitt <justinstitt@google.com>
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