提交 083fc582 编写于 作者: D Don Skidmore 提交者: David S. Miller

ixgbe: cleanup ixgbe_get_drvinfo to be extra careful with buffer boundaries

Make the code in ixgbe_get_drvinfo more protected against buffer overflow
boundaries by using snprintf and sizeof with snprintf.
Signed-off-by: NDon Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 357e8b5f
......@@ -820,16 +820,19 @@ static void ixgbe_get_drvinfo(struct net_device *netdev,
struct ixgbe_adapter *adapter = netdev_priv(netdev);
char firmware_version[32];
strncpy(drvinfo->driver, ixgbe_driver_name, 32);
strncpy(drvinfo->version, ixgbe_driver_version, 32);
sprintf(firmware_version, "%d.%d-%d",
(adapter->eeprom_version & 0xF000) >> 12,
(adapter->eeprom_version & 0x0FF0) >> 4,
adapter->eeprom_version & 0x000F);
strncpy(drvinfo->fw_version, firmware_version, 32);
strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
strncpy(drvinfo->driver, ixgbe_driver_name, sizeof(drvinfo->driver));
strncpy(drvinfo->version, ixgbe_driver_version,
sizeof(drvinfo->version));
snprintf(firmware_version, sizeof(firmware_version), "%d.%d-%d",
(adapter->eeprom_version & 0xF000) >> 12,
(adapter->eeprom_version & 0x0FF0) >> 4,
adapter->eeprom_version & 0x000F);
strncpy(drvinfo->fw_version, firmware_version,
sizeof(drvinfo->fw_version));
strncpy(drvinfo->bus_info, pci_name(adapter->pdev),
sizeof(drvinfo->bus_info));
drvinfo->n_stats = IXGBE_STATS_LEN;
drvinfo->testinfo_len = IXGBE_TEST_LEN;
drvinfo->regdump_len = ixgbe_get_regs_len(netdev);
......
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