mbuf: fix truncated strncpy

Gcc-8 discovers issue with platform_mempool_ops.
rte_mbuf_pool_ops.c:26:3: error: ‘strncpy’ output truncated before
  terminating nul copying as many bytes from a string as its length
  [-Werror=stringop-truncation]
  strncpy(mz->addr, ops_name,  strlen(ops_name));

Since the ops_name is already checked for size, using strncpy
here is unnecessary; just use strcpy.

Fixes: a3acc3144a76 ("mbuf: add pool ops selection functions")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/lib/librte_mbuf/rte_mbuf_pool_ops.c b/lib/librte_mbuf/rte_mbuf_pool_ops.c
index 48cc342..a1d4699 100644 (file)
--- a/lib/librte_mbuf/rte_mbuf_pool_ops.c
+++ b/lib/librte_mbuf/rte_mbuf_pool_ops.c
@@ -23,7 +23,7 @@ rte_mbuf_set_platform_mempool_ops(const char *ops_name)
                        RTE_MEMPOOL_OPS_NAMESIZE, SOCKET_ID_ANY, 0);
                if (mz == NULL)
                        return -rte_errno;
-               strncpy(mz->addr, ops_name, strlen(ops_name));
+               strcpy(mz->addr, ops_name);
                return 0;
        } else if (strcmp(mz->addr, ops_name) == 0) {
                return 0;
@@ -62,7 +62,7 @@ rte_mbuf_set_user_mempool_ops(const char *ops_name)
                        return -rte_errno;
        }
 
-       strncpy(mz->addr, ops_name, strlen(ops_name));
+       strcpy(mz->addr, ops_name);
        return 0;
 
 }