From: Justin Stitt <justinstitt@google.com>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org,
Justin Stitt <justinstitt@google.com>
Subject: [PATCH] net: netcp: replace deprecated strncpy with strscpy
Date: Thu, 12 Oct 2023 21:05:40 +0000 [thread overview]
Message-ID: <20231012-strncpy-drivers-net-ethernet-ti-netcp_ethss-c-v1-1-93142e620864@google.com> (raw)
strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.
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.
Other implementations of .*get_drvinfo also use strscpy so this patch
brings keystone_get_drvinfo() in line as well:
igb/igb_ethtool.c +851
static void igb_get_drvinfo(struct net_device *netdev,
igbvf/ethtool.c
167:static void igbvf_get_drvinfo(struct net_device *netdev,
i40e/i40e_ethtool.c
1999:static void i40e_get_drvinfo(struct net_device *netdev,
e1000/e1000_ethtool.c
529:static void e1000_get_drvinfo(struct net_device *netdev,
ixgbevf/ethtool.c
211:static void ixgbevf_get_drvinfo(struct net_device *netdev,
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.
Found with: $ rg "strncpy\("
---
drivers/net/ethernet/ti/netcp_ethss.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c
index 2adf82a32bf6..02cb6474f6dc 100644
--- a/drivers/net/ethernet/ti/netcp_ethss.c
+++ b/drivers/net/ethernet/ti/netcp_ethss.c
@@ -1735,8 +1735,8 @@ static const struct netcp_ethtool_stat xgbe10_et_stats[] = {
static void keystone_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *info)
{
- strncpy(info->driver, NETCP_DRIVER_NAME, sizeof(info->driver));
- strncpy(info->version, NETCP_DRIVER_VERSION, sizeof(info->version));
+ strscpy(info->driver, NETCP_DRIVER_NAME, sizeof(info->driver));
+ strscpy(info->version, NETCP_DRIVER_VERSION, sizeof(info->version));
}
static u32 keystone_get_msglevel(struct net_device *ndev)
---
base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2
change-id: 20231012-strncpy-drivers-net-ethernet-ti-netcp_ethss-c-305a53873cfc
Best regards,
--
Justin Stitt <justinstitt@google.com>
next reply other threads:[~2023-10-12 21:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-12 21:05 Justin Stitt [this message]
2023-10-14 16:26 ` [PATCH] net: netcp: replace deprecated strncpy with strscpy Andrew Lunn
2023-10-16 23:20 ` patchwork-bot+netdevbpf
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