Messages in this thread Patch in this message | | | Date | Mon, 09 Oct 2023 18:34:45 +0000 | Subject | [PATCH] net: dsa: qca8k: replace deprecated strncpy with ethtool_sprintf | 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.
ethtool_sprintf() is designed specifically for get_strings() usage. Let's replace strncpy in favor of this more robust and easier to understand interface.
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/dsa/qca/qca8k-common.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c index fce04ce12cf9..9ff0a3c1cb91 100644 --- a/drivers/net/dsa/qca/qca8k-common.c +++ b/drivers/net/dsa/qca/qca8k-common.c @@ -487,8 +487,7 @@ void qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, return; for (i = 0; i < priv->info->mib_count; i++) - strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name, - ETH_GSTRING_LEN); + ethtool_sprintf(&data, "%s", ar8327_mib[i].name); } void qca8k_get_ethtool_stats(struct dsa_switch *ds, int port, --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231009-strncpy-drivers-net-dsa-qca-qca8k-common-c-dd2c84b23bdf Best regards, -- Justin Stitt <justinstitt@google.com>
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