[dpdk-dev] examples/ip_pipeline: fix buffer not null terminated

  The destination string may not have a NULL termination if the source's
string is equal to the sizeof(tmgr_port->name).

Using strlcpy in place of strncpy fixes this issue as strlcpy guarantees
NULL termination.

Coverity issue: 272592
Fixes: 25961ff3bcb9 ("examples/ip_pipeline: add traffic manager object")
Cc: jasvinder.singh@intel.com

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
 examples/ip_pipeline/tmgr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
  

> -----Original Message-----
> From: Laatz, Kevin
> Sent: Thursday, April 19, 2018 12:03 PM
> To: dev@dpdk.org
> Cc: Dumitrescu, Cristian <cristian.dumitrescu@intel.com>; Laatz, Kevin
> <kevin.laatz@intel.com>; Singh, Jasvinder <jasvinder.singh@intel.com>
> Subject: [PATCH] examples/ip_pipeline: fix buffer not null terminated
> 
> The destination string may not have a NULL termination if the source's string is
> equal to the sizeof(tmgr_port->name).
> 
> Using strlcpy in place of strncpy fixes this issue as strlcpy guarantees NULL
> termination.
> 
> Coverity issue: 272592
> Fixes: 25961ff3bcb9 ("examples/ip_pipeline: add traffic manager object")
> Cc: jasvinder.singh@intel.com
> 
> Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
> ---
>  examples/ip_pipeline/tmgr.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/examples/ip_pipeline/tmgr.c b/examples/ip_pipeline/tmgr.c index
> b46ca96..40cbf1d 100644
> --- a/examples/ip_pipeline/tmgr.c
> +++ b/examples/ip_pipeline/tmgr.c
> @@ -4,6 +4,8 @@
> 
>  #include <stdlib.h>
> 
> +#include <rte_string_fns.h>
> +
>  #include "tmgr.h"
> 
>  static struct rte_sched_subport_params
> @@ -148,7 +150,7 @@ tmgr_port_create(const char *name, struct
> tmgr_port_params *params)
>  	}
> 
>  	/* Node fill in */
> -	strncpy(tmgr_port->name, name, sizeof(tmgr_port->name));
> +	strlcpy(tmgr_port->name, name, sizeof(tmgr_port->name));
>  	tmgr_port->s = s;
>  	tmgr_port->n_subports_per_port = params->n_subports_per_port;
>  	tmgr_port->n_pipes_per_subport = params->n_pipes_per_subport;
> --
> 2.9.5

Reviewed-by: Jasvinder Singh <jasvinder.singh@intel.com>