/*
* Close relayd socket with an allocated lttcomm_sock.
+ *
+ * If no socket operations are found, simply return 0 meaning that everything
+ * is fine. Without operations, the socket can not possibly be opened or used.
+ * This is possible if the socket was allocated but not created. However, the
+ * caller could simply use it to store a valid file descriptor for instance
+ * passed over a Unix socket and call this to cleanup but still without a valid
+ * ops pointer.
+ *
+ * Return the close returned value. On error, a negative value is usually
+ * returned back from close(2).
*/
int relayd_close(struct lttcomm_sock *sock)
{
+ int ret;
+
/* Code flow error. Safety net. */
assert(sock);
+ /* An invalid fd is fine, return success. */
+ if (sock->fd < 0) {
+ ret = 0;
+ goto end;
+ }
+
DBG3("Relayd closing socket %d", sock->fd);
- return sock->ops->close(sock);
+ if (sock->ops) {
+ ret = sock->ops->close(sock);
+ } else {
+ /* Default call if no specific ops found. */
+ ret = close(sock->fd);
+ if (ret < 0) {
+ PERROR("relayd_close default close");
+ }
+ }
+
+end:
+ return ret;
}
/*