Re: [dpdk-dev] [PATCH 1/2] bus/dpaa: fix build with gcc 9.0

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 11/1/2018 5:45 PM, Bruce Richardson wrote:
> On Thu, Nov 01, 2018 at 10:42:31AM -0700, Stephen Hemminger wrote:
>> On Thu,  1 Nov 2018 13:19:50 +0000
>> Ferruh Yigit <ferruh.yigit@intel.com> wrote:
>>
>>> build error:
>>> In function ‘fman_if_init’,
>>>     .../drivers/bus/dpaa/base/fman/fman.c:186:2:
>>>     error: ‘strncpy’ output may be truncated copying 4095 bytes from a
>>>            string of length 4095 [-Werror=stringop-truncation]
>>>     strncpy(__if->node_path, dpa_node->full_name, PATH_MAX - 1);
>>>
>>> strncpy may result a not null-terminated string,
>>> replaced it with rte_strscpy
>>>
>>> Fixes: 5b22cf744689 ("bus/dpaa: introducing FMan configurations")
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
>>
>> Maybe just use strlcpy instead of a DPDK specific function.
>> That way if Gcc gets smarter it can check that as well.
> 
> +1
> While I get the point of strscpy, if strlcpy is good enough for openbsd,
> it's good enough for me! :-)

I prefer strscpy but for both cases return value is not checked at all, so makes
hard to argue the benefit of the more proper return value J

So, as a rule of thumb are we saying strlcpy is dpdk preferred copy function?