+ FTS *tree;
+ FTSENT *node;
+ char * const paths[2] = { trace_path, NULL };
+ int ret = -1;
+
+ tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
+ if (tree == NULL) {
+ g_warning("Cannot traverse \"%s\" for reading.\n",
+ trace_path);
+ return ret;
+ }
+
+ int dirfd, metafd;
+ while ((node = fts_read(tree))) {
+
+ if (!(node->fts_info & FTS_D))
+ continue;
+
+ dirfd = open(node->fts_accpath, 0);
+ if (dirfd < 0) {
+ g_warning("Unable to open trace "
+ "directory file descriptor : %s.", node->fts_accpath);
+ ret = dirfd;
+ goto error;
+ }
+
+ // Check if a metadata file exists in the current directory
+ metafd = openat(dirfd, "metadata", O_RDONLY);
+ if (metafd < 0) {
+ ret = close(dirfd);
+ if (ret < 0) {
+ g_warning("Unable to open metadata "
+ "file descriptor : %s.", node->fts_accpath);
+ goto error;
+ }
+ } else {
+ ret = close(metafd);
+ if (ret < 0) {
+ g_warning("Unable to close metadata "
+ "file descriptor : %s.", node->fts_accpath);
+ goto error;
+ }
+ ret = close(dirfd);
+ if (ret < 0) {
+ g_warning("Unable to close trace "
+ "directory file descriptor : %s.", node->fts_accpath);
+ goto error;
+ }
+
+ ret = lttv_traceset_create_trace(ts, node->fts_accpath);
+ if (ret < 0) {
+ g_warning("Opening trace \"%s\" from %s "
+ "for reading.", node->fts_accpath, trace_path);
+ goto error;
+ }
+ }
+ }
+
+error:
+ ret = fts_close(tree);
+ if (ret < 0) {
+ g_warning("Unable to close tree "
+ "file descriptor : %s.", trace_path);
+ }
+ return ret;