112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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Copyright © 2013 Tom Gundersen <teg@jklm.no>
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***/
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#include "sd-netlink.h"
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#include "netlink-internal.h"
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#include "netlink-util.h"
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int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name) {
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_cleanup_(sd_netlink_message_unrefp) sd_netlink_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_netlink_open(rtnl);
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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_netlink_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_netlink_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_netlink **rtnl, int ifindex, const char *alias,
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const struct ether_addr *mac, uint32_t mtu) {
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_cleanup_(sd_netlink_message_unrefp) sd_netlink_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_netlink_open(rtnl);
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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_netlink_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_netlink_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_netlink_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_netlink_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(sd_netlink *rtnl, int error, uint32_t serial, sd_netlink_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(rtnl, ret, NLMSG_ERROR);
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if (r < 0)
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return r;
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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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int rtnl_log_parse_error(int r) {
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return log_error_errno(r, "Failed to parse netlink message: %m");
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}
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int rtnl_log_create_error(int r) {
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return log_error_errno(r, "Failed to create netlink message: %m");
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}
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