| // Copyright 2015 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #define _GNU_SOURCE |
| |
| #include <net/if.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include "process-tools.h" |
| #include "network-tools.h" |
| |
| void BringupInterface(const char *name) { |
| int fd; |
| |
| struct ifreq ifr; |
| |
| CHECK_CALL(fd = socket(AF_INET, SOCK_DGRAM, 0)); |
| |
| memset(&ifr, 0, sizeof(ifr)); |
| strncpy(ifr.ifr_name, name, IF_NAMESIZE); |
| |
| // Verify that name is valid. |
| CHECK_CALL(if_nametoindex(ifr.ifr_name)); |
| |
| // Enable the interface |
| ifr.ifr_flags |= IFF_UP; |
| CHECK_CALL(ioctl(fd, SIOCSIFFLAGS, &ifr)); |
| |
| CHECK_CALL(close(fd)); |
| } |