int net_init_socket(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan) { if (qemu_opt_get(opts, "fd")) { int fd; if (qemu_opt_get(opts, "listen") || qemu_opt_get(opts, "connect") || qemu_opt_get(opts, "mcast") || qemu_opt_get(opts, "localaddr")) { error_report("listen=, connect=, mcast= and localaddr= is invalid with fd="); return -1; } fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd")); if (fd == -1) { return -1; } if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { close(fd); return -1; } } else if (qemu_opt_get(opts, "listen")) { const char *listen; if (qemu_opt_get(opts, "fd") || qemu_opt_get(opts, "connect") || qemu_opt_get(opts, "mcast") || qemu_opt_get(opts, "localaddr")) { error_report("fd=, connect=, mcast= and localaddr= is invalid with listen="); return -1; } listen = qemu_opt_get(opts, "listen"); if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { return -1; } } else if (qemu_opt_get(opts, "connect")) { const char *connect; if (qemu_opt_get(opts, "fd") || qemu_opt_get(opts, "listen") || qemu_opt_get(opts, "mcast") || qemu_opt_get(opts, "localaddr")) { error_report("fd=, listen=, mcast= and localaddr= is invalid with connect="); return -1; } connect = qemu_opt_get(opts, "connect"); if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { return -1; } } else if (qemu_opt_get(opts, "mcast")) { const char *mcast, *localaddr; if (qemu_opt_get(opts, "fd") || qemu_opt_get(opts, "connect") || qemu_opt_get(opts, "listen")) { error_report("fd=, connect= and listen= is invalid with mcast="); return -1; } mcast = qemu_opt_get(opts, "mcast"); localaddr = qemu_opt_get(opts, "localaddr"); if (net_socket_mcast_init(vlan, "socket", name, mcast, localaddr) == -1) { return -1; } } else { error_report("-socket requires fd=, listen=, connect= or mcast="); return -1; } return 0; }