Function vhost_user_start_server

dpdk/lib/vhost/socket.c:376–418

}

static int
vhost_user_start_server(struct vhost_user_socket *vsocket)
{
	int ret;
	int fd = vsocket->socket_fd;
	const char *path = vsocket->path;

	/*
	 * bind () may fail if the socket file with the same name already
	 * exists. But the library obviously should not delete the file
	 * provided by the user, since we can not be sure that it is not
	 * being used by other applications. Moreover, many applications form
	 * socket names based on user input, which is prone to errors.
	 *
	 * The user must ensure that the socket does not exist before
	 * registering the vhost driver in server mode.
	 */
	ret = bind(fd, (struct sockaddr *)&vsocket->un, sizeof(vsocket->un));
	if (ret < 0) {
		VHOST_LOG_CONFIG(path, ERR, "failed to bind: %s; remove it and try again\n",
			strerror(errno));
		goto err;
	}
	VHOST_LOG_CONFIG(path, INFO, "binding succeeded\n");

	ret = listen(fd, MAX_VIRTIO_BACKLOG);
	if (ret < 0)
		goto err;

	ret = fdset_add(&vhost_user.fdset, fd, vhost_user_server_new_connection,
		  NULL, vsocket);
	if (ret < 0) {
		VHOST_LOG_CONFIG(path, ERR, "failed to add listen fd %d to vhost server fdset\n",
			fd);
		goto err;
	}

	return 0;

err:
	close(fd);
	return -1;
}

struct vhost_user_reconnect {
	struct sockaddr_un un;