+
+/*
+ * bt_context_add_traces_recursive: Open a trace recursively
+ *
+ * Find each trace present in the subdirectory starting from the given
+ * path, and add them to the context. The packet_seek parameter can be
+ * NULL: this specify to use the default format packet_seek.
+ *
+ * Return: 0 on success, nonzero on failure.
+ * Unable to open toplevel: failure.
+ * Unable to open some subdirectory or file: warn and continue;
+ */
+int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
+ const char *format_str,
+ void (*packet_seek)(struct stream_pos *pos,
+ size_t offset, int whence))
+{
+ FTS *tree;
+ FTSENT *node;
+ GArray *trace_ids;
+ char lpath[PATH_MAX];
+ char * const paths[2] = { lpath, NULL };
+ int ret;
+
+ /*
+ * Need to copy path, because fts_open can change it.
+ * It is the pointer array, not the strings, that are constant.
+ */
+ strncpy(lpath, path, PATH_MAX);
+ lpath[PATH_MAX - 1] = '\0';
+
+ tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
+ if (tree == NULL) {
+ fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
+ path);
+ return -EINVAL;
+ }
+
+ trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
+
+ while ((node = fts_read(tree))) {
+ int dirfd, metafd;
+
+ if (!(node->fts_info & FTS_D))
+ continue;
+
+ dirfd = open(node->fts_accpath, 0);
+ if (dirfd < 0) {
+ fprintf(stderr, "[error] [Context] Unable to open trace "
+ "directory file descriptor.\n");
+ ret = dirfd;
+ goto error;
+ }
+ metafd = openat(dirfd, "metadata", O_RDONLY);
+ if (metafd < 0) {
+ ret = close(dirfd);
+ if (ret < 0) {
+ perror("close");
+ goto error;
+ }
+ } else {
+ int trace_id;
+
+ ret = close(metafd);
+ if (ret < 0) {
+ perror("close");
+ goto error;
+ }
+ ret = close(dirfd);
+ if (ret < 0) {
+ perror("close");
+ goto error;
+ }
+
+ trace_id = bt_context_add_trace(ctx,
+ node->fts_accpath, format_str,
+ packet_seek, NULL, NULL);
+ if (trace_id < 0) {
+ fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s "
+ "for reading.\n", node->fts_accpath, path);
+ ret = trace_id;
+ goto error;
+ }
+ g_array_append_val(trace_ids, trace_id);
+ }
+ }
+
+ g_array_free(trace_ids, TRUE);
+ return 0;
+
+error:
+ return ret;
+}
+
+
+
+int convert_trace(struct trace_descriptor *td_write,
+ struct bt_context *ctx)
+{
+ struct bt_ctf_iter *iter;
+ struct ctf_text_stream_pos *sout;
+ struct bt_iter_pos begin_pos;
+ struct bt_ctf_event *ctf_event;
+ int ret;
+
+ sout = container_of(td_write, struct ctf_text_stream_pos,
+ trace_descriptor);
+
+ begin_pos.type = BT_SEEK_BEGIN;
+ iter = bt_ctf_iter_create(ctx, &begin_pos, NULL);
+ if (!iter) {
+ ret = -1;
+ goto error_iter;
+ }
+ while ((ctf_event = bt_ctf_iter_read_event(iter))) {
+ ret = sout->parent.event_cb(&sout->parent, ctf_event->stream);
+ if (ret) {
+ fprintf(stderr, "[error] Writing event failed.\n");
+ goto end;
+ }
+ ret = bt_iter_next(bt_ctf_get_iter(iter));
+ if (ret < 0)
+ goto end;
+ }
+ ret = 0;
+
+end:
+ bt_ctf_iter_destroy(iter);
+error_iter:
+ return ret;
+}
+