1 files changed, 173 insertions, 0 deletions
diff --git a/src/libsystemd/sd-netlink/netlink-util.c b/src/libsystemd/sd-netlink/netlink-util.c
new file mode 100644
index 0000000000..482ff6b1c2
--- /dev/null
+++ b/src/libsystemd/sd-netlink/netlink-util.c
@@ -0,0 +1,173 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+
+#include "sd-netlink.h"
+
+#include "netlink-util.h"
+#include "netlink-internal.h"
+
+int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name) {
+        _cleanup_netlink_message_unref_ sd_netlink_message *message = NULL;
+        int r;
+
+        assert(rtnl);
+        assert(ifindex > 0);
+        assert(name);
+
+        if (!*rtnl) {
+                r = sd_netlink_open(rtnl);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_message_append_string(message, IFLA_IFNAME, name);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_call(*rtnl, message, 0, NULL);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias,
+                             const struct ether_addr *mac, unsigned mtu) {
+        _cleanup_netlink_message_unref_ sd_netlink_message *message = NULL;
+        int r;
+
+        assert(rtnl);
+        assert(ifindex > 0);
+
+        if (!alias && !mac && mtu == 0)
+                return 0;
+
+        if (!*rtnl) {
+                r = sd_netlink_open(rtnl);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
+        if (r < 0)
+                return r;
+
+        if (alias) {
+                r = sd_netlink_message_append_string(message, IFLA_IFALIAS, alias);
+                if (r < 0)
+                        return r;
+        }
+
+        if (mac) {
+                r = sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, mac);
+                if (r < 0)
+                        return r;
+        }
+
+        if (mtu > 0) {
+                r = sd_netlink_message_append_u32(message, IFLA_MTU, mtu);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_netlink_call(*rtnl, message, 0, NULL);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_netlink_message **ret) {
+        struct nlmsgerr *err;
+        int r;
+
+        assert(error <= 0);
+
+        r = message_new(NULL, ret, NLMSG_ERROR);
+        if (r < 0)
+                return r;
+
+        (*ret)->hdr->nlmsg_seq = serial;
+
+        err = NLMSG_DATA((*ret)->hdr);
+
+        err->error = error;
+
+        return 0;
+}
+
+bool rtnl_message_type_is_neigh(uint16_t type) {
+        switch (type) {
+                case RTM_NEWNEIGH:
+                case RTM_GETNEIGH:
+                case RTM_DELNEIGH:
+                        return true;
+                default:
+                        return false;
+        }
+}
+
+bool rtnl_message_type_is_route(uint16_t type) {
+        switch (type) {
+                case RTM_NEWROUTE:
+                case RTM_GETROUTE:
+                case RTM_DELROUTE:
+                        return true;
+                default:
+                        return false;
+        }
+}
+
+bool rtnl_message_type_is_link(uint16_t type) {
+        switch (type) {
+                case RTM_NEWLINK:
+                case RTM_SETLINK:
+                case RTM_GETLINK:
+                case RTM_DELLINK:
+                        return true;
+                default:
+                        return false;
+        }
+}
+
+bool rtnl_message_type_is_addr(uint16_t type) {
+        switch (type) {
+                case RTM_NEWADDR:
+                case RTM_GETADDR:
+                case RTM_DELADDR:
+                        return true;
+                default:
+                        return false;
+        }
+}
+
+int rtnl_log_parse_error(int r) {
+        return log_error_errno(r, "Failed to parse netlink message: %m");
+}
+
+int rtnl_log_create_error(int r) {
+        return log_error_errno(r, "Failed to create netlink message: %m");
+}