882 	struct ifreq ifr;  in do_chflags()  local
886 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);  in do_chflags()
890 	err = ioctl(fd, SIOCGIFFLAGS, &ifr);  in do_chflags()
896 	if ((ifr.ifr_flags^flags)&mask) {  in do_chflags()
897 		ifr.ifr_flags &= ~mask;  in do_chflags()
898 		ifr.ifr_flags |= mask&flags;  in do_chflags()
899 		err = ioctl(fd, SIOCSIFFLAGS, &ifr);  in do_chflags()
909 	struct ifreq ifr;  in do_changename()  local
913 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);  in do_changename()
914 	strncpy(ifr.ifr_newname, newdev, IFNAMSIZ);  in do_changename()
918 	err = ioctl(fd, SIOCSIFNAME, &ifr);  in do_changename()
930 	struct ifreq ifr;  in set_qlen()  local
937 	memset(&ifr, 0, sizeof(ifr));  in set_qlen()
938 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);  in set_qlen()
939 	ifr.ifr_qlen = qlen;  in set_qlen()
940 	if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {  in set_qlen()
952 	struct ifreq ifr;  in set_mtu()  local
959 	memset(&ifr, 0, sizeof(ifr));  in set_mtu()
960 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);  in set_mtu()
961 	ifr.ifr_mtu = mtu;  in set_mtu()
962 	if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {  in set_mtu()
974 	struct ifreq ifr;  in get_address()  local
985 	memset(&ifr, 0, sizeof(ifr));  in get_address()
986 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);  in get_address()
987 	if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {  in get_address()
995 	me.sll_ifindex = ifr.ifr_ifindex;  in get_address()
1015 		char *lla, struct ifreq *ifr)  in parse_address()  argument
1019 	memset(ifr, 0, sizeof(*ifr));  in parse_address()
1020 	strncpy(ifr->ifr_name, dev, IFNAMSIZ);  in parse_address()
1021 	ifr->ifr_hwaddr.sa_family = hatype;  in parse_address()
1022 	alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla);  in parse_address()
1032 static int set_address(struct ifreq *ifr, int brd)  in set_address()  argument
1039 	if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) {  in set_address()