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-rw-r--r--lib/northbound_oper.c5
-rw-r--r--lib/yang.c16
-rw-r--r--lib/yang.h4
3 files changed, 21 insertions, 4 deletions
diff --git a/lib/northbound_oper.c b/lib/northbound_oper.c
index 5c2d3ed8c8..ad495b6f9c 100644
--- a/lib/northbound_oper.c
+++ b/lib/northbound_oper.c
@@ -1723,8 +1723,9 @@ static enum nb_error __walk(struct nb_op_yield_state *ys, bool is_resume)
*/
len = darr_strlen(ys->xpath);
if (ni->keys.num) {
- yang_get_key_preds(ys->xpath + len, sib,
- &ni->keys,
+ darr_ensure_avail(ys->xpath,
+ yang_get_key_pred_strlen(sib, &ni->keys) + 1);
+ yang_get_key_preds(ys->xpath + len, sib, &ni->keys,
darr_cap(ys->xpath) - len);
} else {
/* add a position predicate (1s based?) */
diff --git a/lib/yang.c b/lib/yang.c
index 955f49b00c..a57b247634 100644
--- a/lib/yang.c
+++ b/lib/yang.c
@@ -1357,9 +1357,21 @@ uint32_t yang_get_list_elements_count(const struct lyd_node *node)
} while (node);
return count;
}
+int yang_get_key_pred_strlen(const struct lysc_node *snode, const struct yang_list_keys *keys)
+{
+ const struct lysc_node_leaf *skey;
+ size_t len = 0;
+ size_t i = 0;
+
+ LY_FOR_KEYS (snode, skey) {
+ /* [%s='%s'] */
+ len += 5 + strlen(skey->name) + strlen(keys->key[i]);
+ i++;
+ }
+ return len;
+}
-int yang_get_key_preds(char *s, const struct lysc_node *snode, const struct yang_list_keys *keys,
- ssize_t space)
+int yang_get_key_preds(char *s, const struct lysc_node *snode, const struct yang_list_keys *keys, ssize_t space)
{
const struct lysc_node_leaf *skey;
ssize_t len2, len = 0;
diff --git a/lib/yang.h b/lib/yang.h
index afd3d5e0fc..3877a421c5 100644
--- a/lib/yang.h
+++ b/lib/yang.h
@@ -884,6 +884,10 @@ bool yang_is_last_level_dnode(const struct lyd_node *dnode);
extern int yang_get_key_preds(char *s, const struct lysc_node *snode,
const struct yang_list_keys *keys, ssize_t space);
+/* Get the length of the predicate string based on the keys */
+extern int yang_get_key_pred_strlen(const struct lysc_node *snode,
+ const struct yang_list_keys *keys);
+
/* Get YANG keys from an existing dnode */
extern int yang_get_node_keys(struct lyd_node *node, struct yang_list_keys *keys);