blob: 271a75f3d2a659b4fd2cb31954a84245ab3c6cce [file] [log] [blame]
San Mehatf1b736b2009-10-10 17:22:08 -07001/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17#include <stdio.h>
18#include <errno.h>
19
20#include <sys/socket.h>
21#include <sys/select.h>
22#include <sys/time.h>
23#include <sys/types.h>
24#include <sys/un.h>
25
26#include <linux/netlink.h>
27
28#define LOG_TAG "Vold"
29
30#include <cutils/log.h>
31
32#include "NetlinkManager.h"
33#include "NetlinkHandler.h"
34
35NetlinkManager *NetlinkManager::sInstance = NULL;
36
37NetlinkManager *NetlinkManager::Instance() {
38 if (!sInstance)
39 sInstance = new NetlinkManager();
40 return sInstance;
41}
42
43NetlinkManager::NetlinkManager() {
44 mBroadcaster = NULL;
45}
46
47NetlinkManager::~NetlinkManager() {
48}
49
50int NetlinkManager::start() {
51 struct sockaddr_nl nladdr;
52 int sz = 64 * 1024;
53
54 memset(&nladdr, 0, sizeof(nladdr));
55 nladdr.nl_family = AF_NETLINK;
56 nladdr.nl_pid = getpid();
57 nladdr.nl_groups = 0xffffffff;
58
59 if ((mSock = socket(PF_NETLINK,
60 SOCK_DGRAM,NETLINK_KOBJECT_UEVENT)) < 0) {
61 LOGE("Unable to create uevent socket: %s", strerror(errno));
62 return -1;
63 }
64
65 if (setsockopt(mSock, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)) < 0) {
66 LOGE("Unable to set uevent socket options: %s", strerror(errno));
67 return -1;
68 }
69
70 if (bind(mSock, (struct sockaddr *) &nladdr, sizeof(nladdr)) < 0) {
71 LOGE("Unable to bind uevent socket: %s", strerror(errno));
72 return -1;
73 }
74
75 mHandler = new NetlinkHandler(mSock);
76 if (mHandler->start()) {
77 LOGE("Unable to start NetlinkHandler: %s", strerror(errno));
78 return -1;
79 }
80 return 0;
81}
82
83int NetlinkManager::stop() {
84 if (mHandler->stop()) {
85 LOGE("Unable to stop NetlinkHandler: %s", strerror(errno));
86 return -1;
87 }
88 delete mHandler;
89 mHandler = NULL;
90
91 close(mSock);
92 mSock = -1;
93
94 return 0;
95}