rc = sendmsg(conn_fd, &msg, 0);
} while (rc < 0 && (errno == EINTR || errno == EAGAIN));
- do {
- if (vmsg->data) {
- rc = write(conn_fd, vmsg->data, vmsg->size);
- } else {
- rc = write(conn_fd, p + VHOST_USER_HDR_SIZE, vmsg->size);
- }
- } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
+ if (vmsg->size) {
+ do {
+ if (vmsg->data) {
+ rc = write(conn_fd, vmsg->data, vmsg->size);
+ } else {
+ rc = write(conn_fd, p + VHOST_USER_HDR_SIZE, vmsg->size);
+ }
+ } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
+ }
if (rc <= 0) {
vu_panic(dev, "Error while writing: %s", strerror(errno));