101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <linux/rtnetlink.h>
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#include <netinet/ether.h>
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#include "sd-rtnl.h"
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#include "rtnl-util.h"
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int rtnl_set_link_name(sd_rtnl *rtnl, int ifindex, const char *name) {
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_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message = NULL;
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int r;
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assert(rtnl);
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assert(ifindex > 0);
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assert(name);
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r = sd_rtnl_message_link_new(RTM_SETLINK, ifindex, &message);
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if (r < 0)
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return r;
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r = sd_rtnl_message_append_string(message, IFLA_IFNAME, name);
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if (r < 0)
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return r;
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r = sd_rtnl_call(rtnl, message, 0, NULL);
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if (r < 0)
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return r;
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return 0;
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}
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int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const char *alias,
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const struct ether_addr *mac, unsigned mtu) {
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_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message = NULL;
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bool need_update = false;
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int r;
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assert(rtnl);
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assert(ifindex > 0);
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if (!alias && !mac && mtu == 0)
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return 0;
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r = sd_rtnl_message_link_new(RTM_SETLINK, ifindex, &message);
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if (r < 0)
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return r;
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if (alias) {
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r = sd_rtnl_message_append_string(message, IFLA_IFALIAS, alias);
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if (r < 0)
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return r;
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need_update = true;
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}
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if (mac) {
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r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac);
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if (r < 0)
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return r;
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need_update = true;
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}
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if (mtu > 0) {
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r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu);
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if (r < 0)
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return r;
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need_update = true;
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}
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if (need_update) {
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r = sd_rtnl_call(rtnl, message, 0, NULL);
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if (r < 0)
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return r;
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}
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return 0;
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}
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