- ret = index_write(stream->index_fd, index,
- sizeof(struct lttng_packet_index));
+ ssize_t size_ret;
+
+ size_ret = index_write(stream->index_fd, index,
+ sizeof(struct ctf_packet_index));
+ if (size_ret < sizeof(struct ctf_packet_index)) {
+ ret = -1;
+ } else {
+ ret = 0;
+ }