- ret = write(apps_cmd_pipe[1], ust_cmd,
- sizeof(struct ust_command));
- if (ret < 0) {
- PERROR("write apps cmd pipe");
- if (errno == EBADF) {
- /*
- * We can't inform the application thread to process
- * registration. We will exit or else application
- * registration will not occur and tracing will never
- * start.
- */
- goto error;
+ if (apps_cmd_pipe[1] >= 0) {
+ ret = write(apps_cmd_pipe[1], ust_cmd,
+ sizeof(struct ust_command));
+ if (ret < 0) {
+ PERROR("write apps cmd pipe");
+ if (errno == EBADF) {
+ /*
+ * We can't inform the application thread to process
+ * registration. We will exit or else application
+ * registration will not occur and tracing will never
+ * start.
+ */
+ goto error;
+ }
+ }
+ } else {
+ /* Application manager thread is not available. */
+ ret = close(ust_cmd->sock);
+ if (ret < 0) {
+ PERROR("close ust_cmd sock");