Prefer `strscpy` to `strncpy` since it's more robust and less ambiguous.
Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx>
---
Note:
I wasn't able to tell what the expected size of
`out->rtnl_link_ops->kind` is. If it is less than or equal to `IFNAMSIZ`
then there was no bug present and a bug present otherwise. Nonetheless,
let's swap over to strscpy.
---
net/netfilter/nft_meta.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 8fdc7318c03c..de8ced05a273 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -185,12 +185,12 @@ static noinline bool nft_meta_get_eval_kind(enum nft_meta_keys key,
case NFT_META_IIFKIND:
if (!in || !in->rtnl_link_ops)
return false;
- strncpy((char *)dest, in->rtnl_link_ops->kind, IFNAMSIZ);
+ strscpy((char *)dest, in->rtnl_link_ops->kind, IFNAMSIZ);
break;
case NFT_META_OIFKIND:
if (!out || !out->rtnl_link_ops)
return false;
- strncpy((char *)dest, out->rtnl_link_ops->kind, IFNAMSIZ);
+ strscpy((char *)dest, out->rtnl_link_ops->kind, IFNAMSIZ);
break;
default:
return false;
@@ -206,7 +206,7 @@ static void nft_meta_store_ifindex(u32 *dest, const struct net_device *dev)
static void nft_meta_store_ifname(u32 *dest, const struct net_device *dev)
{
- strncpy((char *)dest, dev ? dev->name : "", IFNAMSIZ);
+ strscpy((char *)dest, dev ? dev->name : "", IFNAMSIZ);
}
static bool nft_meta_store_iftype(u32 *dest, const struct net_device *dev)
--
2.41.0.640.ga95def55d0-goog
