[dpdk-dev] [PATCH] net/af_xdp: use snprintf instead of strncpy

[Ferruh Yigit]

On 10/7/2020 11:28 AM, Bruce Richardson wrote:
> On Wed, Oct 07, 2020 at 11:26:38AM +0100, Bruce Richardson wrote:
>> On Wed, Oct 07, 2020 at 11:51:31AM +0200, Olivier Matz wrote:
>>> On Wed, Oct 07, 2020 at 10:40:32AM +0100, Ferruh Yigit wrote:
>>>> On 10/7/2020 10:01 AM, Ciara Loftus wrote:
>>>>> strncpy may leave the destination buffer not NULL terminated so use
>>>>> snprintf instead.
>>>>
>>>> What do you think using 'strlcpy'?
>>>
>>> Or even better, rte_strscpy()
>>> https://git.dpdk.org/dpdk/commit/?id=b0236c7cf761
>>>
>> I think this is largely a matter of preference, and unless there is a good
>> reason not to, I tend towards strlcpy as the older and more common (till
>> now) interface. The main thing is just to use a function that will
>> guarantee dest is null-terminated here, and both strlcpy and strscpy meet
>> that criteria.
>>
> I'd also add that strlcpy is more likely to be recognised by tools like
> coverity, compared to rte_strscpy which is DPDK-specific.
> 

+1 to 'strlcpy'