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-rw-r--r--src/libsystemd/sd-netlink/rtnl-message.c1144
1 files changed, 1144 insertions, 0 deletions
diff --git a/src/libsystemd/sd-netlink/rtnl-message.c b/src/libsystemd/sd-netlink/rtnl-message.c
new file mode 100644
index 0000000..4cabbab
--- /dev/null
+++ b/src/libsystemd/sd-netlink/rtnl-message.c
@@ -0,0 +1,1144 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <netinet/in.h>
+#include <linux/if_addrlabel.h>
+#include <linux/if_bridge.h>
+#include <linux/nexthop.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include "sd-netlink.h"
+
+#include "format-util.h"
+#include "netlink-internal.h"
+#include "netlink-types.h"
+#include "netlink-util.h"
+#include "socket-util.h"
+#include "util.h"
+
+int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ if ((rtm->rtm_family == AF_INET && prefixlen > 32) ||
+ (rtm->rtm_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ rtm->rtm_dst_len = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ if ((rtm->rtm_family == AF_INET && prefixlen > 32) ||
+ (rtm->rtm_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ rtm->rtm_src_len = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_scope = scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_flags = flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_flags(const sd_netlink_message *m, unsigned *flags) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *flags = rtm->rtm_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_table(sd_netlink_message *m, unsigned char table) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_table = table;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_family(const sd_netlink_message *m, int *family) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *family = rtm->rtm_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_family(sd_netlink_message *m, int family) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_family = family;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_type(const sd_netlink_message *m, unsigned char *type) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(type, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *type = rtm->rtm_type;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_type(sd_netlink_message *m, unsigned char type) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_type = type;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_protocol(const sd_netlink_message *m, unsigned char *protocol) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(protocol, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *protocol = rtm->rtm_protocol;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_scope(const sd_netlink_message *m, unsigned char *scope) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(scope, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *scope = rtm->rtm_scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_tos(const sd_netlink_message *m, unsigned char *tos) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(tos, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *tos = rtm->rtm_tos;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_table(const sd_netlink_message *m, unsigned char *table) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(table, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *table = rtm->rtm_table;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_dst_prefixlen(const sd_netlink_message *m, unsigned char *dst_len) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(dst_len, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *dst_len = rtm->rtm_dst_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_src_prefixlen(const sd_netlink_message *m, unsigned char *src_len) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(src_len, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *src_len = rtm->rtm_src_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_route(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int rtm_family,
+ unsigned char rtm_protocol) {
+ struct rtmsg *rtm;
+ int r;
+
+ assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL);
+ assert_return((nlmsg_type == RTM_GETROUTE && rtm_family == AF_UNSPEC) ||
+ IN_SET(rtm_family, AF_INET, AF_INET6), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWROUTE)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+
+ rtm = NLMSG_DATA((*ret)->hdr);
+
+ rtm->rtm_family = rtm_family;
+ rtm->rtm_scope = RT_SCOPE_UNIVERSE;
+ rtm->rtm_type = RTN_UNICAST;
+ rtm->rtm_table = RT_TABLE_MAIN;
+ rtm->rtm_protocol = rtm_protocol;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_nexthop(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nhmsg_type, int nh_family,
+ unsigned char nh_protocol) {
+ struct nhmsg *nhm;
+ int r;
+
+ assert_return(rtnl_message_type_is_nexthop(nhmsg_type), -EINVAL);
+ assert_return((nhmsg_type == RTM_GETNEXTHOP && nh_family == AF_UNSPEC) ||
+ IN_SET(nh_family, AF_INET, AF_INET6), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nhmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nhmsg_type == RTM_NEWNEXTHOP)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+
+ nhm = NLMSG_DATA((*ret)->hdr);
+
+ nhm->nh_family = nh_family;
+ nhm->nh_scope = RT_SCOPE_UNIVERSE;
+ nhm->nh_protocol = nh_protocol;
+
+ return 0;
+}
+
+int sd_rtnl_message_nexthop_set_flags(sd_netlink_message *m, uint8_t flags) {
+ struct nhmsg *nhm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_nexthop(m->hdr->nlmsg_type), -EINVAL);
+
+ nhm = NLMSG_DATA(m->hdr);
+ nhm->nh_flags |= flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_nexthop_set_family(sd_netlink_message *m, uint8_t family) {
+ struct nhmsg *nhm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+
+ nhm = NLMSG_DATA(m->hdr);
+ nhm->nh_family = family;
+
+ return 0;
+}
+
+int sd_rtnl_message_nexthop_get_family(const sd_netlink_message *m, uint8_t *family) {
+ struct nhmsg *nhm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+
+ nhm = NLMSG_DATA(m->hdr);
+ *family = nhm->nh_family ;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ ndm->ndm_flags |= flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ ndm->ndm_state |= state;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_flags(const sd_netlink_message *m, uint8_t *flags) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ *flags = ndm->ndm_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_state(const sd_netlink_message *m, uint16_t *state) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ *state = ndm->ndm_state;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_family(const sd_netlink_message *m, int *family) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *family = ndm->ndm_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_ifindex(const sd_netlink_message *m, int *index) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(index, -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *index = ndm->ndm_ifindex;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int ndm_family) {
+ struct ndmsg *ndm;
+ int r;
+
+ assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL);
+ assert_return(IN_SET(ndm_family, AF_UNSPEC, AF_INET, AF_INET6, AF_BRIDGE), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWNEIGH)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+
+ ndm = NLMSG_DATA((*ret)->hdr);
+
+ ndm->ndm_family = ndm_family;
+ ndm->ndm_ifindex = index;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(change, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_flags = flags;
+ ifi->ifi_change = change;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_type = type;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_family = family;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_link(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int index) {
+ struct ifinfomsg *ifi;
+ int r;
+
+ assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWLINK)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+ else if (nlmsg_type == RTM_NEWLINKPROP)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL | NLM_F_APPEND;
+
+ ifi = NLMSG_DATA((*ret)->hdr);
+
+ ifi->ifi_family = AF_UNSPEC;
+ ifi->ifi_index = index;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ if ((ifa->ifa_family == AF_INET && prefixlen > 32) ||
+ (ifa->ifa_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ ifa->ifa_prefixlen = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_flags = flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_scope = scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_family(const sd_netlink_message *m, int *family) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *family = ifa->ifa_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_prefixlen(const sd_netlink_message *m, unsigned char *prefixlen) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(prefixlen, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *prefixlen = ifa->ifa_prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_scope(const sd_netlink_message *m, unsigned char *scope) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(scope, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *scope = ifa->ifa_scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_flags(const sd_netlink_message *m, unsigned char *flags) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *flags = ifa->ifa_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_ifindex(const sd_netlink_message *m, int *ifindex) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(ifindex, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *ifindex = ifa->ifa_index;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_addr(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int index,
+ int family) {
+ struct ifaddrmsg *ifa;
+ int r;
+
+ assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL);
+ assert_return((nlmsg_type == RTM_GETADDR && index == 0) ||
+ index > 0, -EINVAL);
+ assert_return((nlmsg_type == RTM_GETADDR && family == AF_UNSPEC) ||
+ IN_SET(family, AF_INET, AF_INET6), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_GETADDR)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP;
+
+ ifa = NLMSG_DATA((*ret)->hdr);
+
+ ifa->ifa_index = index;
+ ifa->ifa_family = family;
+ if (family == AF_INET)
+ ifa->ifa_prefixlen = 32;
+ else if (family == AF_INET6)
+ ifa->ifa_prefixlen = 128;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret,
+ int index, int family) {
+ int r;
+
+ r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family);
+ if (r < 0)
+ return r;
+
+ (*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_ifindex(const sd_netlink_message *m, int *ifindex) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(ifindex, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *ifindex = ifi->ifi_index;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_flags(const sd_netlink_message *m, unsigned *flags) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *flags = ifi->ifi_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_type(const sd_netlink_message *m, unsigned short *type) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(type, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *type = ifi->ifi_type;
+
+ return 0;
+}
+
+int sd_rtnl_message_get_family(const sd_netlink_message *m, int *family) {
+ assert_return(m, -EINVAL);
+ assert_return(family, -EINVAL);
+
+ assert(m->hdr);
+
+ if (rtnl_message_type_is_link(m->hdr->nlmsg_type)) {
+ struct ifinfomsg *ifi;
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *family = ifi->ifi_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_route(m->hdr->nlmsg_type)) {
+ struct rtmsg *rtm;
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *family = rtm->rtm_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_neigh(m->hdr->nlmsg_type)) {
+ struct ndmsg *ndm;
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *family = ndm->ndm_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_addr(m->hdr->nlmsg_type)) {
+ struct ifaddrmsg *ifa;
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *family = ifa->ifa_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type)) {
+ struct rtmsg *rtm;
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *family = rtm->rtm_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_nexthop(m->hdr->nlmsg_type)) {
+ struct nhmsg *nhm;
+
+ nhm = NLMSG_DATA(m->hdr);
+
+ *family = nhm->nh_family;
+
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family) {
+ struct ifaddrlblmsg *addrlabel;
+ int r;
+
+ assert_return(rtnl_message_type_is_addrlabel(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWADDRLABEL)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ addrlabel = NLMSG_DATA((*ret)->hdr);
+
+ addrlabel->ifal_family = ifal_family;
+ addrlabel->ifal_index = ifindex;
+
+ return 0;
+}
+
+int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct ifaddrlblmsg *addrlabel;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addrlabel(m->hdr->nlmsg_type), -EINVAL);
+
+ addrlabel = NLMSG_DATA(m->hdr);
+
+ if (prefixlen > 128)
+ return -ERANGE;
+
+ addrlabel->ifal_prefixlen = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addrlabel_get_prefixlen(const sd_netlink_message *m, unsigned char *prefixlen) {
+ struct ifaddrlblmsg *addrlabel;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addrlabel(m->hdr->nlmsg_type), -EINVAL);
+
+ addrlabel = NLMSG_DATA(m->hdr);
+
+ *prefixlen = addrlabel->ifal_prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_routing_policy_rule(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifal_family) {
+ struct rtmsg *rtm;
+ int r;
+
+ assert_return(rtnl_message_type_is_routing_policy_rule(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWRULE)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ rtm = NLMSG_DATA((*ret)->hdr);
+ rtm->rtm_family = ifal_family;
+ rtm->rtm_protocol = RTPROT_BOOT;
+ rtm->rtm_scope = RT_SCOPE_UNIVERSE;
+ rtm->rtm_type = RTN_UNICAST;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_tos(sd_netlink_message *m, unsigned char tos) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ routing_policy_rule->rtm_tos = tos;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_tos(const sd_netlink_message *m, unsigned char *tos) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ *tos = routing_policy_rule->rtm_tos;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_table(sd_netlink_message *m, unsigned char table) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ routing_policy_rule->rtm_table = table;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_table(const sd_netlink_message *m, unsigned char *table) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ *table = routing_policy_rule->rtm_table;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_flags(sd_netlink_message *m, unsigned flags) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+ routing_policy_rule->rtm_flags |= flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_flags(const sd_netlink_message *m, unsigned *flags) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+ *flags = routing_policy_rule->rtm_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_rtm_type(sd_netlink_message *m, unsigned char type) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ routing_policy_rule->rtm_type = type;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_rtm_type(const sd_netlink_message *m, unsigned char *type) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ *type = routing_policy_rule->rtm_type;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(sd_netlink_message *m, unsigned char len) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ routing_policy_rule->rtm_dst_len = len;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(const sd_netlink_message *m, unsigned char *len) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ *len = routing_policy_rule->rtm_dst_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(sd_netlink_message *m, unsigned char len) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ routing_policy_rule->rtm_src_len = len;
+
+ return 0;
+}
+
+int sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(const sd_netlink_message *m, unsigned char *len) {
+ struct rtmsg *routing_policy_rule;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL);
+
+ routing_policy_rule = NLMSG_DATA(m->hdr);
+
+ *len = routing_policy_rule->rtm_src_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_qdisc(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int tcm_family, int tcm_ifindex) {
+ struct tcmsg *tcm;
+ int r;
+
+ assert_return(rtnl_message_type_is_qdisc(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWQDISC)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ tcm = NLMSG_DATA((*ret)->hdr);
+ tcm->tcm_family = tcm_family;
+ tcm->tcm_ifindex = tcm_ifindex;
+
+ return 0;
+}
+
+int sd_rtnl_message_set_qdisc_parent(sd_netlink_message *m, uint32_t parent) {
+ struct tcmsg *tcm;
+
+ assert_return(rtnl_message_type_is_qdisc(m->hdr->nlmsg_type), -EINVAL);
+
+ tcm = NLMSG_DATA(m->hdr);
+ tcm->tcm_parent = parent;
+
+ return 0;
+}
+
+int sd_rtnl_message_set_qdisc_handle(sd_netlink_message *m, uint32_t handle) {
+ struct tcmsg *tcm;
+
+ assert_return(rtnl_message_type_is_qdisc(m->hdr->nlmsg_type), -EINVAL);
+
+ tcm = NLMSG_DATA(m->hdr);
+ tcm->tcm_handle = handle;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_tclass(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int tcm_family, int tcm_ifindex) {
+ struct tcmsg *tcm;
+ int r;
+
+ assert_return(rtnl_message_type_is_tclass(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWTCLASS)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ tcm = NLMSG_DATA((*ret)->hdr);
+ tcm->tcm_family = tcm_family;
+ tcm->tcm_ifindex = tcm_ifindex;
+
+ return 0;
+}
+
+int sd_rtnl_message_set_tclass_parent(sd_netlink_message *m, uint32_t parent) {
+ struct tcmsg *tcm;
+
+ assert_return(rtnl_message_type_is_tclass(m->hdr->nlmsg_type), -EINVAL);
+
+ tcm = NLMSG_DATA(m->hdr);
+ tcm->tcm_parent = parent;
+
+ return 0;
+}
+
+int sd_rtnl_message_set_tclass_handle(sd_netlink_message *m, uint32_t handle) {
+ struct tcmsg *tcm;
+
+ assert_return(rtnl_message_type_is_tclass(m->hdr->nlmsg_type), -EINVAL);
+
+ tcm = NLMSG_DATA(m->hdr);
+ tcm->tcm_handle = handle;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_mdb(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int mdb_ifindex) {
+ struct br_port_msg *bpm;
+ int r;
+
+ assert_return(rtnl_message_type_is_mdb(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWMDB)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ bpm = NLMSG_DATA((*ret)->hdr);
+ bpm->family = AF_BRIDGE;
+ bpm->ifindex = mdb_ifindex;
+
+ return 0;
+}