diff mbox series

[net-next,5/9] fm10k: replace deprecated strncpy with strscpy

Message ID 20231017190411.2199743-6-jacob.e.keller@intel.com (mailing list archive)
State Accepted
Commit 48b238461b90bcfba1177674031aaaa5e8ffc207
Delegated to: Netdev Maintainers
Headers show
Series Intel Wired LAN Driver Updates 2023-10-17 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1363 this patch: 1363
netdev/cc_maintainers warning 5 maintainers not CCed: intel-wired-lan@lists.osuosl.org pabeni@redhat.com edumazet@google.com jesse.brandeburg@intel.com anthony.l.nguyen@intel.com
netdev/build_clang success Errors and warnings before: 1388 this patch: 1388
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1388 this patch: 1388
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jacob Keller Oct. 17, 2023, 7:04 p.m. UTC 
From: Justin Stitt <justinstitt@google.com>

`strncpy` is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.

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 fm10k_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>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
---
 drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
index d53369e30040..13a05604dcc0 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
@@ -448,10 +448,10 @@  static void fm10k_get_drvinfo(struct net_device *dev,
 {
 	struct fm10k_intfc *interface = netdev_priv(dev);
 
-	strncpy(info->driver, fm10k_driver_name,
-		sizeof(info->driver) - 1);
-	strncpy(info->bus_info, pci_name(interface->pdev),
-		sizeof(info->bus_info) - 1);
+	strscpy(info->driver, fm10k_driver_name,
+		sizeof(info->driver));
+	strscpy(info->bus_info, pci_name(interface->pdev),
+		sizeof(info->bus_info));
 }
 
 static void fm10k_get_pauseparam(struct net_device *dev,