Fix: sym name len (kernel)

[lttng-tools.git] / src / bin / lttng-sessiond / snapshot.c

diff --git a/src/bin/lttng-sessiond/snapshot.c b/src/bin/lttng-sessiond/snapshot.c
index d2fc8ca691a15de1455dbb5cb3019f41cd756b09..d22b5d52c98b730d122d91605c0f6851ef578c61 100644 (file)
--- a/src/bin/lttng-sessiond/snapshot.c
+++ b/src/bin/lttng-sessiond/snapshot.c
@@ -47,6 +47,8 @@ static int output_init(uint64_t max_size, const char *name,
 
        assert(output);
 
+       memset(output, 0, sizeof(struct snapshot_output));
+
        if (max_size == (uint64_t) -1ULL) {
                max_size = 0;
        }
@@ -222,6 +224,32 @@ void snapshot_output_destroy(struct snapshot_output *obj)
        free(obj);
 }
 
+/*
+ * RCU read side lock MUST be acquired before calling this since the returned
+ * pointer is in a RCU hash table.
+ *
+ * Return the reference on success or else NULL.
+ */
+struct snapshot_output *snapshot_find_output_by_name(const char *name,
+               struct snapshot *snapshot)
+{
+       struct lttng_ht_iter iter;
+       struct snapshot_output *output = NULL;
+
+       assert(snapshot);
+       assert(name);
+
+       cds_lfht_for_each_entry(snapshot->output_ht->ht, &iter.iter, output,
+               node.node) {
+               if (!strncmp(output->name, name, strlen(name))) {
+                       return output;
+               }
+       }
+
+       /* Not found */
+       return NULL;
+}
+
 /*
  * RCU read side lock MUST be acquired before calling this since the returned
  * pointer is in a RCU hash table.