[dpdk-dev] examples/ip_pipeline: fix buffer not null terminated
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Commit Message
Copying source string of length equal to sizeof(kni->name)
will not append the NULL to destination string.
Using strlcpy in place of strncpy fixes this issue as
strlcpy guarantees NULL termination.
Coverity issue: 272562
Fixes: 9a408cc8ac ("examples/ip_pipeline: add KNI object")
CC: jasvinder.singh@intel.com
Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
---
examples/ip_pipeline/kni.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Comments
> -----Original Message-----
> From: Pattan, Reshma
> Sent: Wednesday, April 18, 2018 5:58 PM
> To: dev@dpdk.org
> Cc: Singh, Jasvinder <jasvinder.singh@intel.com>; Pattan, Reshma
> <reshma.pattan@intel.com>
> Subject: [PATCH] examples/ip_pipeline: fix buffer not null terminated
>
> Copying source string of length equal to sizeof(kni->name) will not append the
> NULL to destination string.
>
> Using strlcpy in place of strncpy fixes this issue as strlcpy guarantees NULL
> termination.
>
> Coverity issue: 272562
> Fixes: 9a408cc8ac ("examples/ip_pipeline: add KNI object")
> CC: jasvinder.singh@intel.com
>
> Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
> ---
> examples/ip_pipeline/kni.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/examples/ip_pipeline/kni.c b/examples/ip_pipeline/kni.c index
> ed5f8942e..7e5ff0543 100644
> --- a/examples/ip_pipeline/kni.c
> +++ b/examples/ip_pipeline/kni.c
> @@ -7,6 +7,7 @@
>
> #include <rte_ethdev.h>
> #include <rte_bus_pci.h>
> +#include <rte_string_fns.h>
>
> #include "kni.h"
> #include "mempool.h"
> @@ -153,7 +154,7 @@ kni_create(const char *name, struct kni_params
> *params)
> return NULL;
>
> /* Node fill in */
> - strncpy(kni->name, name, sizeof(kni->name));
> + strlcpy(kni->name, name, sizeof(kni->name));
> kni->k = k;
>
> /* Node add to list */
> --
> 2.14.3
Reviewed-by: Jasvinder Singh <jasvinder.singh@intel.com>
@@ -7,6 +7,7 @@
#include <rte_ethdev.h>
#include <rte_bus_pci.h>
+#include <rte_string_fns.h>
#include "kni.h"
#include "mempool.h"
@@ -153,7 +154,7 @@ kni_create(const char *name, struct kni_params *params)
return NULL;
/* Node fill in */
- strncpy(kni->name, name, sizeof(kni->name));
+ strlcpy(kni->name, name, sizeof(kni->name));
kni->k = k;
/* Node add to list */