214 static int option_append_hdr(uint8_t **buf, size_t *buflen, uint16_t optcode, size_t optlen) {  in option_append_hdr()  argument
219         if (optlen > 0xffff || *buflen < optlen + offsetof(DHCP6Option, data))  in option_append_hdr()
223         unaligned_write_be16(*buf + offsetof(DHCP6Option, len), optlen);  in option_append_hdr()
232                         size_t optlen, const void *optval) {  in dhcp6_option_append()  argument
235         assert_return(optval || optlen == 0, -EINVAL);  in dhcp6_option_append()
237         r = option_append_hdr(buf, buflen, code, optlen);  in dhcp6_option_append()
241         *buf = mempcpy_safe(*buf, optval, optlen);  in dhcp6_option_append()
242         *buflen -= optlen;  in dhcp6_option_append()
802                 size_t optlen,  in dhcp6_option_parse_addresses()  argument
810         if (optlen == 0 || optlen % sizeof(struct in6_addr) != 0)  in dhcp6_option_parse_addresses()
813         if (!GREEDY_REALLOC(*addrs, *count + optlen / sizeof(struct in6_addr)))  in dhcp6_option_parse_addresses()
816         memcpy(*addrs + *count, optval, optlen);  in dhcp6_option_parse_addresses()
817         *count += optlen / sizeof(struct in6_addr);  in dhcp6_option_parse_addresses()
825         size_t optlen, n = 0;  in parse_domain()  local
834         optlen = *len;  in parse_domain()
836         if (optlen <= 1)  in parse_domain()
843                 if (optlen == 0)  in parse_domain()
848                 optlen--;  in parse_domain()
855                 if (c > optlen)  in parse_domain()
861                 optlen -= c;  in parse_domain()
885         *len = optlen;  in parse_domain()
890 int dhcp6_option_parse_domainname(const uint8_t *optval, size_t optlen, char **ret) {  in dhcp6_option_parse_domainname()  argument
897         r = parse_domain(&optval, &optlen, &domain);  in dhcp6_option_parse_domainname()
902         if (optlen != 0)  in dhcp6_option_parse_domainname()
909 int dhcp6_option_parse_domainname_list(const uint8_t *optval, size_t optlen, char ***ret) {  in dhcp6_option_parse_domainname_list()  argument
916         if (optlen <= 1)  in dhcp6_option_parse_domainname_list()
918         if (optval[optlen - 1] != '\0')  in dhcp6_option_parse_domainname_list()
921         while (optlen > 0) {  in dhcp6_option_parse_domainname_list()
924                 r = parse_domain(&optval, &optlen, &name);  in dhcp6_option_parse_domainname_list()