168 lines
4.4 KiB
C
168 lines
4.4 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 <netinet/ether.h>
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#include "sd-rtnl.h"
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#include "rtnl-util.h"
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#include "rtnl-internal.h"
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int rtnl_set_link_name(sd_rtnl **rtnl, int ifindex, const char *name) {
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_cleanup_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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if (!*rtnl) {
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r = sd_rtnl_open(rtnl, 0);
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if (r < 0)
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return r;
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}
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r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
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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_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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if (!alias && !mac && mtu == 0)
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return 0;
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if (!*rtnl) {
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r = sd_rtnl_open(rtnl, 0);
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if (r < 0)
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return r;
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}
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r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
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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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}
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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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}
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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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}
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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_message_new_synthetic_error(int error, uint32_t serial, sd_rtnl_message **ret) {
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struct nlmsgerr *err;
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int r;
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assert(error <= 0);
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r = message_new(NULL, ret, NLMSG_SPACE(sizeof(struct nlmsgerr)));
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if (r < 0)
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return r;
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(*ret)->hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
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(*ret)->hdr->nlmsg_type = NLMSG_ERROR;
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(*ret)->hdr->nlmsg_seq = serial;
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err = NLMSG_DATA((*ret)->hdr);
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err->error = error;
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return 0;
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}
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bool rtnl_message_type_is_route(uint16_t type) {
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switch (type) {
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case RTM_NEWROUTE:
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case RTM_GETROUTE:
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case RTM_DELROUTE:
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return true;
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default:
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return false;
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}
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}
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bool rtnl_message_type_is_link(uint16_t type) {
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switch (type) {
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case RTM_NEWLINK:
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case RTM_SETLINK:
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case RTM_GETLINK:
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case RTM_DELLINK:
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return true;
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default:
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return false;
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}
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}
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bool rtnl_message_type_is_addr(uint16_t type) {
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switch (type) {
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case RTM_NEWADDR:
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case RTM_GETADDR:
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case RTM_DELADDR:
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return true;
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default:
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return false;
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}
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}
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int rtnl_log_parse_error(int r) {
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log_error_errno(r, "Failed to parse netlink message: %m");
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return r;
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}
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int rtnl_log_create_error(int r) {
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log_error_errno(r, "Failed to create netlink message: %m");
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return r;
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}
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