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 needed due to `ident` being memset'd to 0 just before the copy. Considering the above, 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: [email protected] Signed-off-by: Justin Stitt <[email protected]> --- Note: build-tested only. Found with: $ rg "strncpy\(" --- drivers/net/ethernet/pensando/ionic/ionic_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c index 1dc79cecc5cc..835577392178 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -554,8 +554,8 @@ int ionic_identify(struct ionic *ionic) memset(ident, 0, sizeof(*ident)); ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); - strncpy(ident->drv.driver_ver_str, UTS_RELEASE, - sizeof(ident->drv.driver_ver_str) - 1); + strscpy(ident->drv.driver_ver_str, UTS_RELEASE, + sizeof(ident->drv.driver_ver_str)); mutex_lock(&ionic->dev_cmd_lock); --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231011-strncpy-drivers-net-ethernet-pensando-ionic-ionic_main-c-709f8f1ea312 Best regards, -- Justin Stitt <[email protected]>
