2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include <sys/socket.h>
21 #include <sys/select.h>
23 #include <sys/types.h>
26 #include <linux/netlink.h>
27 #include <linux/rtnetlink.h>
29 #define LOG_TAG "Netd"
31 #include <cutils/log.h>
33 #include "NetlinkManager.h"
34 #include "NetlinkHandler.h"
36 const int NetlinkManager::NFLOG_QUOTA_GROUP = 1;
37 const int NetlinkManager::IDLETIMER_GROUP = 1;
39 NetlinkManager *NetlinkManager::sInstance = NULL;
41 NetlinkManager *NetlinkManager::Instance() {
43 sInstance = new NetlinkManager();
47 NetlinkManager::NetlinkManager() {
51 NetlinkManager::~NetlinkManager() {
54 NetlinkHandler *NetlinkManager::setupSocket(int *sock, int netlinkFamily,
55 int groups, int format) {
57 struct sockaddr_nl nladdr;
61 memset(&nladdr, 0, sizeof(nladdr));
62 nladdr.nl_family = AF_NETLINK;
63 nladdr.nl_pid = getpid();
64 nladdr.nl_groups = groups;
66 if ((*sock = socket(PF_NETLINK, SOCK_DGRAM, netlinkFamily)) < 0) {
67 ALOGE("Unable to create netlink socket: %s", strerror(errno));
71 if (setsockopt(*sock, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)) < 0) {
72 ALOGE("Unable to set uevent socket SO_RCVBUFFORCE option: %s", strerror(errno));
77 if (setsockopt(*sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) {
78 SLOGE("Unable to set uevent socket SO_PASSCRED option: %s", strerror(errno));
83 if (bind(*sock, (struct sockaddr *) &nladdr, sizeof(nladdr)) < 0) {
84 ALOGE("Unable to bind netlink socket: %s", strerror(errno));
89 NetlinkHandler *handler = new NetlinkHandler(this, *sock, format);
90 if (handler->start()) {
91 ALOGE("Unable to start NetlinkHandler: %s", strerror(errno));
99 int NetlinkManager::start() {
100 if ((mUeventHandler = setupSocket(&mUeventSock, NETLINK_KOBJECT_UEVENT,
101 0xffffffff, NetlinkListener::NETLINK_FORMAT_ASCII)) == NULL) {
105 if ((mRouteHandler = setupSocket(&mRouteSock, NETLINK_ROUTE, RTMGRP_LINK,
106 NetlinkListener::NETLINK_FORMAT_BINARY)) == NULL) {
110 if ((mQuotaHandler = setupSocket(&mQuotaSock, NETLINK_NFLOG,
111 NFLOG_QUOTA_GROUP, NetlinkListener::NETLINK_FORMAT_BINARY)) == NULL) {
112 ALOGE("Unable to open quota2 logging socket");
113 // TODO: return -1 once the emulator gets a new kernel.
116 if ((mIfaceIdleTimerHandler = setupSocket(&mIfaceIdleTimerSock, NETLINK_IDLETIMER,
117 IDLETIMER_GROUP, NetlinkListener::NETLINK_FORMAT_BINARY)) == NULL) {
118 // TODO: switch back to using NETLINK_NFLOG with a custom type.
119 ALOGE("Unable to open iface idletimer socket");
124 int NetlinkManager::stop() {
127 if (mUeventHandler->stop()) {
128 ALOGE("Unable to stop uevent NetlinkHandler: %s", strerror(errno));
132 delete mUeventHandler;
133 mUeventHandler = NULL;
138 if (mRouteHandler->stop()) {
139 ALOGE("Unable to stop route NetlinkHandler: %s", strerror(errno));
143 delete mRouteHandler;
144 mRouteHandler = NULL;
150 if (mQuotaHandler->stop()) {
151 ALOGE("Unable to stop quota NetlinkHandler: %s", strerror(errno));
155 delete mQuotaHandler;
156 mQuotaHandler = NULL;
162 if (mIfaceIdleTimerHandler) {
163 if (mIfaceIdleTimerHandler->stop()) {
164 ALOGE("Unable to stop iface IDLETIMER NetlinkHandler: %s", strerror(errno));
168 delete mIfaceIdleTimerHandler;
169 mIfaceIdleTimerHandler = NULL;
171 close(mIfaceIdleTimerSock);
172 mIfaceIdleTimerSock = -1;