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.
23 #include <sys/types.h>
29 #define LOG_TAG "Netd"
31 #include "cutils/log.h"
32 #include "utils/RWLock.h"
34 #include <binder/IPCThreadState.h>
35 #include <binder/IServiceManager.h>
36 #include <binder/ProcessState.h>
38 #include "Controllers.h"
39 #include "CommandListener.h"
40 #include "NetdConstants.h"
41 #include "NetdNativeService.h"
42 #include "NetlinkManager.h"
43 #include "DnsProxyListener.h"
44 #include "MDnsSdListener.h"
45 #include "FwmarkServer.h"
47 using android::status_t;
49 using android::IPCThreadState;
50 using android::ProcessState;
51 using android::defaultServiceManager;
52 using android::net::NetdNativeService;
54 static void blockSigpipe();
55 static void remove_pid_file();
56 static bool write_pid_file();
58 const char* const PID_FILE_PATH = "/data/misc/net/netd_pid";
59 const int PID_FILE_FLAGS = O_CREAT | O_TRUNC | O_WRONLY | O_NOFOLLOW | O_CLOEXEC;
60 const mode_t PID_FILE_MODE = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; // mode 0644, rw-r--r--
62 android::RWLock android::net::gBigNetdLock;
65 using android::net::gCtls;
67 ALOGI("Netd 1.0 starting");
72 NetlinkManager *nm = NetlinkManager::Instance();
74 ALOGE("Unable to create NetlinkManager");
78 gCtls = new android::net::Controllers();
80 nm->setBroadcaster((SocketListener *) &cl);
83 ALOGE("Unable to start NetlinkManager (%s)", strerror(errno));
87 // Set local DNS mode, to prevent bionic from proxying
88 // back to this service, recursively.
89 setenv("ANDROID_DNS_MODE", "local", 1);
90 DnsProxyListener dpl(&gCtls->netCtrl);
91 if (dpl.startListener()) {
92 ALOGE("Unable to start DnsProxyListener (%s)", strerror(errno));
97 if (mdnsl.startListener()) {
98 ALOGE("Unable to start MDnsSdListener (%s)", strerror(errno));
102 FwmarkServer fwmarkServer(&gCtls->netCtrl);
103 if (fwmarkServer.startListener()) {
104 ALOGE("Unable to start FwmarkServer (%s)", strerror(errno));
109 * Now that we're up, we can respond to commands
111 if (cl.startListener()) {
112 ALOGE("Unable to start CommandListener (%s)", strerror(errno));
118 IPCThreadState::self()->disableBackgroundScheduling(true);
119 NetdNativeService::publishAndJoinThreadPool();
121 ALOGI("Netd exiting");
128 static bool write_pid_file() {
129 char pid_buf[INT32_STRLEN];
130 snprintf(pid_buf, sizeof(pid_buf), "%d\n", (int) getpid());
132 int fd = open(PID_FILE_PATH, PID_FILE_FLAGS, PID_FILE_MODE);
134 ALOGE("Unable to create pid file (%s)", strerror(errno));
138 // File creation is affected by umask, so make sure the right mode bits are set.
139 if (fchmod(fd, PID_FILE_MODE) == -1) {
140 ALOGE("failed to set mode 0%o on %s (%s)", PID_FILE_MODE, PID_FILE_PATH, strerror(errno));
146 if (write(fd, pid_buf, strlen(pid_buf)) != (ssize_t)strlen(pid_buf)) {
147 ALOGE("Unable to write to pid file (%s)", strerror(errno));
156 static void remove_pid_file() {
157 unlink(PID_FILE_PATH);
160 static void blockSigpipe()
165 sigaddset(&mask, SIGPIPE);
166 if (sigprocmask(SIG_BLOCK, &mask, NULL) != 0)
167 ALOGW("WARNING: SIGPIPE not blocked\n");