From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [PATCH v6 10/16] net/qede: solve broken strncpy
Date: Mon, 14 May 2018 22:14:54 +0100
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To: Andy Green <andy@warmcat.com>, dev@dpdk.org
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On 5/14/2018 9:20 PM, Ferruh Yigit wrote:
> On 5/14/2018 6:00 AM, Andy Green wrote:
>> /home/agreen/projects/dpdk/drivers/net/qede/qede_main.c: In function
>> ‘qed_slowpath_start’:
>> /home/agreen/projects/dpdk/drivers/net/qede/qede_main.c:307:3:
>> error: ‘strncpy’ output may be truncated copying 12 bytes from a
>> string of length 127 [-Werror=stringop-truncation]
>>    strncpy((char *)drv_version.name, (const char *)params->name,
>>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>     MCP_DRV_VER_STR_SIZE - 4);
>>     ~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Signed-off-by: Andy Green <andy@warmcat.com>
>> Fixes: 86a2265e59d7 ("qede: add SRIOV support")
>> Cc: stable@dpdk.org
>> ---
>>  drivers/net/qede/qede_main.c |    7 ++++---
>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/net/qede/qede_main.c b/drivers/net/qede/qede_main.c
>> index 2333ca073..fcfc32d0d 100644
>> --- a/drivers/net/qede/qede_main.c
>> +++ b/drivers/net/qede/qede_main.c
>> @@ -9,6 +9,7 @@
>>  #include <limits.h>
>>  #include <time.h>
>>  #include <rte_alarm.h>
>> +#include <rte_string_fns.h>
>>  
>>  #include "qede_ethdev.h"
>>  
>> @@ -303,9 +304,9 @@ static int qed_slowpath_start(struct ecore_dev *edev,
>>  		drv_version.version = (params->drv_major << 24) |
>>  		    (params->drv_minor << 16) |
>>  		    (params->drv_rev << 8) | (params->drv_eng);
>> -		/* TBD: strlcpy() */
>> -		strncpy((char *)drv_version.name, (const char *)params->name,
>> -			MCP_DRV_VER_STR_SIZE - 4);
>> +		strlcpy((char *)drv_version.name, (const char *)params->name,
>> +			sizeof(drv_version.name));
>> +		drv_version.name[sizeof(drv_version.name) - 1] = '\0';
> 
> Why set '\0'? doesn't strlcpy assures it?

Will remove this line while applying, with the change:
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

> 
>>  		rc = ecore_mcp_send_drv_version(hwfn, hwfn->p_main_ptt,
>>  						&drv_version);
>>  		if (rc) {
>>
>