blob: b466e423b18a6b9eec06cfbeab1f8b7c40d91911 [file] [log] [blame]
/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <dirent.h>
#define LOG_TAG "Netd"
#include "cutils/log.h"
#include "CommandListener.h"
#include "NetlinkManager.h"
#include "DnsProxyListener.h"
#include "MDnsSdListener.h"
static void coldboot(const char *path);
static void sigchld_handler(int sig);
static void blockSigpipe();
int main() {
CommandListener *cl;
NetlinkManager *nm;
DnsProxyListener *dpl;
MDnsSdListener *mdnsl;
ALOGI("Netd 1.0 starting");
// signal(SIGCHLD, sigchld_handler);
blockSigpipe();
if (!(nm = NetlinkManager::Instance())) {
ALOGE("Unable to create NetlinkManager");
exit(1);
};
cl = new CommandListener();
nm->setBroadcaster((SocketListener *) cl);
if (nm->start()) {
ALOGE("Unable to start NetlinkManager (%s)", strerror(errno));
exit(1);
}
// Set local DNS mode, to prevent bionic from proxying
// back to this service, recursively.
setenv("ANDROID_DNS_MODE", "local", 1);
dpl = new DnsProxyListener();
if (dpl->startListener()) {
ALOGE("Unable to start DnsProxyListener (%s)", strerror(errno));
exit(1);
}
mdnsl = new MDnsSdListener();
if (mdnsl->startListener()) {
ALOGE("Unable to start MDnsSdListener (%s)", strerror(errno));
exit(1);
}
/*
* Now that we're up, we can respond to commands
*/
if (cl->startListener()) {
ALOGE("Unable to start CommandListener (%s)", strerror(errno));
exit(1);
}
// Eventually we'll become the monitoring thread
while(1) {
sleep(1000);
}
ALOGI("Netd exiting");
exit(0);
}
static void do_coldboot(DIR *d, int lvl)
{
struct dirent *de;
int dfd, fd;
dfd = dirfd(d);
fd = openat(dfd, "uevent", O_WRONLY);
if(fd >= 0) {
write(fd, "add\n", 4);
close(fd);
}
while((de = readdir(d))) {
DIR *d2;
if (de->d_name[0] == '.')
continue;
if (de->d_type != DT_DIR && lvl > 0)
continue;
fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
if(fd < 0)
continue;
d2 = fdopendir(fd);
if(d2 == 0)
close(fd);
else {
do_coldboot(d2, lvl + 1);
closedir(d2);
}
}
}
static void coldboot(const char *path)
{
DIR *d = opendir(path);
if(d) {
do_coldboot(d, 0);
closedir(d);
}
}
static void sigchld_handler(int sig) {
pid_t pid = wait(NULL);
ALOGD("Child process %d exited", pid);
}
static void blockSigpipe()
{
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGPIPE);
if (sigprocmask(SIG_BLOCK, &mask, NULL) != 0)
ALOGW("WARNING: SIGPIPE not blocked\n");
}