/*-*- 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 <netinet/ether.h> #include "sd-rtnl.h" #include "rtnl-util.h" #include "rtnl-internal.h" int rtnl_set_link_name(sd_rtnl **rtnl, int ifindex, const char *name) { _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; int r; assert(rtnl); assert(ifindex > 0); assert(name); if (!*rtnl) { r = sd_rtnl_open(rtnl, 0); if (r < 0) return r; } r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex); if (r < 0) return r; r = sd_rtnl_message_append_string(message, IFLA_IFNAME, name); if (r < 0) return r; r = sd_rtnl_call(*rtnl, message, 0, NULL); if (r < 0) return r; return 0; } int rtnl_set_link_properties(sd_rtnl **rtnl, int ifindex, const char *alias, const struct ether_addr *mac, unsigned mtu) { _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; int r; assert(rtnl); assert(ifindex > 0); if (!alias && !mac && mtu == 0) return 0; if (!*rtnl) { r = sd_rtnl_open(rtnl, 0); 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_rtnl_message_append_string(message, IFLA_IFALIAS, alias); if (r < 0) return r; } if (mac) { r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac); if (r < 0) return r; } if (mtu > 0) { r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu); if (r < 0) return r; } r = sd_rtnl_call(*rtnl, message, 0, NULL); if (r < 0) return r; return 0; } int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_rtnl_message **ret) { struct nlmsgerr *err; int r; assert(error <= 0); r = message_new(NULL, ret, NLMSG_SPACE(sizeof(struct nlmsgerr))); if (r < 0) return r; (*ret)->hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr)); (*ret)->hdr->nlmsg_type = NLMSG_ERROR; (*ret)->hdr->nlmsg_seq = serial; err = NLMSG_DATA((*ret)->hdr); err->error = error; return 0; } 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) { log_error("Failed to parse netlink message: %s", strerror(-r)); return r; } int rtnl_log_create_error(int r) { log_error("Failed to create netlink message: %s", strerror(-r)); return r; }