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| author | Justin Stitt <justinstitt@google.com> | 2023-10-05 21:33:19 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-09 19:38:41 -0700 |
| commit | 52cdbea1a54aba106e6c616c0500a12a965ecbbe (patch) | |
| tree | a66833953e483cff67d273f3744c7662b8445bd9 | |
| parent | 0aba524728f0d893829f6909c40608390a1912c1 (diff) | |
| download | linux-52cdbea1a54aba106e6c616c0500a12a965ecbbe.tar.gz linux-52cdbea1a54aba106e6c616c0500a12a965ecbbe.tar.bz2 linux-52cdbea1a54aba106e6c616c0500a12a965ecbbe.zip | |
liquidio: replace deprecated strncpy/strcpy with strscpy
`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 required as drvinfo is memset to 0:
| memset(drvinfo, 0, sizeof(struct ethtool_drvinfo));
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
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20231005-strncpy-drivers-net-ethernet-cavium-liquidio-lio_ethtool-c-v1-1-ab565ab4d197@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/lio_ethtool.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c index 9d56181a301f..d3e07b6ed5e1 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c @@ -442,10 +442,11 @@ lio_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) oct = lio->oct_dev; memset(drvinfo, 0, sizeof(struct ethtool_drvinfo)); - strcpy(drvinfo->driver, "liquidio"); - strncpy(drvinfo->fw_version, oct->fw_info.liquidio_firmware_version, - ETHTOOL_FWVERS_LEN); - strncpy(drvinfo->bus_info, pci_name(oct->pci_dev), 32); + strscpy(drvinfo->driver, "liquidio", sizeof(drvinfo->driver)); + strscpy(drvinfo->fw_version, oct->fw_info.liquidio_firmware_version, + sizeof(drvinfo->fw_version)); + strscpy(drvinfo->bus_info, pci_name(oct->pci_dev), + sizeof(drvinfo->bus_info)); } static void @@ -458,10 +459,11 @@ lio_get_vf_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) oct = lio->oct_dev; memset(drvinfo, 0, sizeof(struct ethtool_drvinfo)); - strcpy(drvinfo->driver, "liquidio_vf"); - strncpy(drvinfo->fw_version, oct->fw_info.liquidio_firmware_version, - ETHTOOL_FWVERS_LEN); - strncpy(drvinfo->bus_info, pci_name(oct->pci_dev), 32); + strscpy(drvinfo->driver, "liquidio_vf", sizeof(drvinfo->driver)); + strscpy(drvinfo->fw_version, oct->fw_info.liquidio_firmware_version, + sizeof(drvinfo->fw_version)); + strscpy(drvinfo->bus_info, pci_name(oct->pci_dev), + sizeof(drvinfo->bus_info)); } static int |