*
* Returns 0 on success, < 0 on error
*/
-int lttng_kconsumer_snapshot_channel(struct lttng_consumer_channel *channel,
- uint64_t key, char *path, uint64_t relayd_id, uint64_t nb_packets_per_stream,
+static int lttng_kconsumer_snapshot_channel(
+ struct lttng_consumer_channel *channel,
+ uint64_t key, char *path, uint64_t relayd_id,
+ uint64_t nb_packets_per_stream,
struct lttng_consumer_local_data *ctx)
{
int ret;
/* Splice is not supported yet for channel snapshot. */
if (channel->output != CONSUMER_CHANNEL_MMAP) {
- ERR("Unsupported output %d", channel->output);
+ ERR("Unsupported output type for channel \"%s\": mmap output is required to record a snapshot",
+ channel->name);
ret = -1;
goto end;
}