[dpdk-dev] [PATCH] kvargs: return error if key not find in kvlist
Keith Wiles
keith.wiles at intel.com
Wed Aug 9 15:30:04 CEST 2017
rte_kvargs_process() should return error if the key
is not found in the kvlist or kvlist is NULL.
Minor documentation changes and update for when an
error is returned.
Signed-off-by: Keith Wiles <keith.wiles at intel.com>
---
lib/librte_kvargs/rte_kvargs.c | 7 ++++---
lib/librte_kvargs/rte_kvargs.h | 7 ++++---
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index 854ac83f5..c8e8f4b28 100755
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -158,16 +158,17 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
void *opaque_arg)
{
const struct rte_kvargs_pair *pair;
- unsigned i;
+ unsigned int i, found = 0;
for (i = 0; i < kvlist->count; i++) {
pair = &kvlist->pairs[i];
- if (key_match == NULL || strcmp(pair->key, key_match) == 0) {
+ if (!key_match || strcmp(pair->key, key_match) == 0) {
+ found++;
if ((*handler)(pair->key, pair->value, opaque_arg) < 0)
return -1;
}
}
- return 0;
+ return (!found) ? -1 : 0;
}
/* free the rte_kvargs structure */
diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h
index 5821c726a..260d4db5b 100755
--- a/lib/librte_kvargs/rte_kvargs.h
+++ b/lib/librte_kvargs/rte_kvargs.h
@@ -115,9 +115,9 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
* Call a handler function for each key/value matching the key
*
* For each key/value association that matches the given key, calls the
- * handler function with the for a given arg_name passing the value on the
+ * handler function with the given arg_name passing the value in the
* dictionary for that key and a given extra argument. If *kvlist* is NULL
- * function does nothing.
+ * function does nothing and returns error.
*
* @param kvlist
* The rte_kvargs structure
@@ -131,7 +131,8 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
*
* @return
* - 0 on success
- * - Negative on error
+ * - Negative on error or
+ * if *key_match* does not match an entry in *kvlist*
*/
int rte_kvargs_process(const struct rte_kvargs *kvlist,
const char *key_match, arg_handler_t handler, void *opaque_arg);
--
2.11.0
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