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/*-*- 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-internal.h"
#include "netlink-util.h"
int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name) {
_cleanup_(sd_netlink_message_unrefp) 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_(sd_netlink_message_unrefp) 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");
}
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