214 static int option_append_hdr(uint8_t **buf, size_t *buflen, uint16_t optcode, size_t optlen) {  in option_append_hdr()  argument
217         assert_return(buflen, -EINVAL);  in option_append_hdr()
219         if (optlen > 0xffff || *buflen < optlen + offsetof(DHCP6Option, data))  in option_append_hdr()
226         *buflen -= offsetof(DHCP6Option, data);  in option_append_hdr()
231 int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code,  in dhcp6_option_append()  argument
237         r = option_append_hdr(buf, buflen, code, optlen);  in dhcp6_option_append()
242         *buflen -= optlen;  in dhcp6_option_append()
247 int dhcp6_option_append_vendor_option(uint8_t **buf, size_t *buflen, OrderedSet *vendor_options) {  in dhcp6_option_append_vendor_option()  argument
253         assert(buflen);  in dhcp6_option_append_vendor_option()
271                 r = dhcp6_option_append(buf, buflen, SD_DHCP6_OPTION_VENDOR_OPTS, total, p);  in dhcp6_option_append_vendor_option()
279 static int option_append_ia_address(uint8_t **buf, size_t *buflen, const struct iaaddr *address) {  in option_append_ia_address()  argument
285         assert(buflen);  in option_append_ia_address()
293         r = option_append_hdr(buf, buflen, SD_DHCP6_OPTION_IAADDR, sizeof(struct iaaddr));  in option_append_ia_address()
298         *buflen -= sizeof(struct iaaddr);  in option_append_ia_address()
303 static int option_append_pd_prefix(uint8_t **buf, size_t *buflen, const struct iapdprefix *prefix) {  in option_append_pd_prefix()  argument
309         assert(buflen);  in option_append_pd_prefix()
321         r = option_append_hdr(buf, buflen, SD_DHCP6_OPTION_IA_PD_PREFIX, sizeof(struct iapdprefix));  in option_append_pd_prefix()
326         *buflen -= sizeof(struct iapdprefix);  in option_append_pd_prefix()
331 int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, const DHCP6IA *ia) {  in dhcp6_option_append_ia()  argument
340         assert_return(buflen, -EINVAL);  in dhcp6_option_append_ia()
365         if (*buflen < offsetof(DHCP6Option, data) + len)  in dhcp6_option_append_ia()
369         ia_buflen = *buflen;  in dhcp6_option_append_ia()
373         *buflen -= offsetof(DHCP6Option, data);  in dhcp6_option_append_ia()
376         *buflen -= len;  in dhcp6_option_append_ia()
380                         r = option_append_pd_prefix(buf, buflen, &addr->iapdprefix);  in dhcp6_option_append_ia()
382                         r = option_append_ia_address(buf, buflen, &addr->iaaddr);  in dhcp6_option_append_ia()
392 int dhcp6_option_append_fqdn(uint8_t **buf, size_t *buflen, const char *fqdn) {  in dhcp6_option_append_fqdn()  argument
396         assert_return(buf && *buf && buflen && fqdn, -EINVAL);  in dhcp6_option_append_fqdn()
414         r = dhcp6_option_append(buf, buflen, SD_DHCP6_OPTION_CLIENT_FQDN, 1 + r, buffer);  in dhcp6_option_append_fqdn()
419 int dhcp6_option_append_user_class(uint8_t **buf, size_t *buflen, char * const *user_class) {  in dhcp6_option_append_user_class()  argument
425         assert(buflen);  in dhcp6_option_append_user_class()
447         return dhcp6_option_append(buf, buflen, SD_DHCP6_OPTION_USER_CLASS, total, p);  in dhcp6_option_append_user_class()
450 int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *buflen, char * const *vendor_class) {  in dhcp6_option_append_vendor_class()  argument
457         assert(buflen);  in dhcp6_option_append_vendor_class()
489         return dhcp6_option_append(buf, buflen, SD_DHCP6_OPTION_VENDOR_CLASS, total, p);  in dhcp6_option_append_vendor_class()
494                 size_t buflen,  in dhcp6_option_parse()  argument
508         if (buflen < offsetof(DHCP6Option, data))  in dhcp6_option_parse()
511         if (*offset >= buflen - offsetof(DHCP6Option, data))  in dhcp6_option_parse()
516         if (len > buflen - offsetof(DHCP6Option, data) - *offset)  in dhcp6_option_parse()
548 static int dhcp6_option_parse_ia_options(sd_dhcp6_client *client, const uint8_t *buf, size_t buflen…  in dhcp6_option_parse_ia_options()  argument
551         assert(buf || buflen == 0);  in dhcp6_option_parse_ia_options()
553         for (size_t offset = 0; offset < buflen;) {  in dhcp6_option_parse_ia_options()
558                 r = dhcp6_option_parse(buf, buflen, &offset, &code, &data_len, &data);  in dhcp6_option_parse_ia_options()