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ethtool: Null-terminate filename passed to ethtool_ops::flash_device
The parameters for ETHTOOL_FLASHDEV include a filename, which ought to be null-terminated. Currently the only driver that implements ethtool_ops::flash_device attempts to add a null terminator if necessary, but does it wrongly. Do it in the ethtool core instead. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -716,12 +716,8 @@ static int
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be_do_flash(struct net_device *netdev, struct ethtool_flash *efl)
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{
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struct be_adapter *adapter = netdev_priv(netdev);
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char file_name[ETHTOOL_FLASH_MAX_FILENAME];
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file_name[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
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strcpy(file_name, efl->data);
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return be_load_fw(adapter, file_name);
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return be_load_fw(adapter, efl->data);
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}
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static int
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@ -1190,6 +1190,8 @@ static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
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if (!dev->ethtool_ops->flash_device)
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return -EOPNOTSUPP;
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efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
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return dev->ethtool_ops->flash_device(dev, &efl);
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}
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