examples/flow_classify: fix fseek error handling

Check return value of fseek and exit if non zero.

Coverity issue: 143435
Fixes: bab16ddaf2c1 ("examples/flow_classify: add sample application")

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: Jasvinder Singh <jasvinder.singh@intel.com>

diff --git a/examples/flow_classify/flow_classify.c b/examples/flow_classify/flow_classify.c
index e4cabdb..766f1dd 100644 (file)
--- a/examples/flow_classify/flow_classify.c
+++ b/examples/flow_classify/flow_classify.c
@@ -657,13 +657,17 @@ add_rules(const char *rule_path, struct flow_classifier *cls_app)
        unsigned int i = 0;
        unsigned int total_num = 0;
        struct rte_eth_ntuple_filter ntuple_filter;
+       int ret;
 
        fh = fopen(rule_path, "rb");
        if (fh == NULL)
-               rte_exit(EXIT_FAILURE, "%s: Open %s failed\n", __func__,
+               rte_exit(EXIT_FAILURE, "%s: fopen %s failed\n", __func__,
                        rule_path);
 
-       fseek(fh, 0, SEEK_SET);
+       ret = fseek(fh, 0, SEEK_SET);
+       if (ret)
+               rte_exit(EXIT_FAILURE, "%s: fseek %d failed\n", __func__,
+                       ret);
 
        i = 0;
        while (fgets(buff, LINE_MAX, fh) != NULL) {