static int net_tap_init(VLANState *vlan, const char *model, const char *name, const char *ifname1, const char *setup_script, const char *down_script) { TAPState *s; int fd; char ifname[128]; if (ifname1 != NULL) pstrcpy(ifname, sizeof(ifname), ifname1); else ifname[0] = '\0'; TFR(fd = tap_open(ifname, sizeof(ifname))); if (fd < 0) return -1; if (!setup_script || !strcmp(setup_script, "no")) setup_script = ""; if (setup_script[0] != '\0') { if (launch_script(setup_script, ifname, fd)) return -1; } s = net_tap_fd_init(vlan, model, name, fd); if (!s) return -1; snprintf(s->vc->info_str, sizeof(s->vc->info_str), "ifname=%s,script=%s,downscript=%s", ifname, setup_script, down_script); if (down_script && strcmp(down_script, "no")) snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); return 0; }