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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
***/
#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, uint32_t 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(sd_netlink *rtnl, int error, uint32_t serial, sd_netlink_message **ret) {
struct nlmsgerr *err;
int r;
assert(error <= 0);
r = message_new(rtnl, ret, NLMSG_ERROR);
if (r < 0)
return r;
(*ret)->hdr->nlmsg_seq = serial;
err = NLMSG_DATA((*ret)->hdr);
err->error = error;
return 0;
}
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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