main.cpp revision f1c368a83b738658d27720898b433bbc010123ba 
1/*
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 <stdlib.h>
19#include <signal.h>
20#include <errno.h>
21#include <string.h>
22#include <sys/stat.h>
23#include <sys/types.h>
24#include <sys/wait.h>
25
26#include <fcntl.h>
27#include <dirent.h>
28
29#define LOG_TAG "Netd"
30
31#include "cutils/log.h"
32
33#include "CommandListener.h"
34#include "NetlinkManager.h"
35
36static void coldboot(const char *path);
37static void sigchld_handler(int sig);
38
39int main() {
40
41    CommandListener *cl;
42    NetlinkManager *nm;
43
44    LOGI("Netd 1.0 starting");
45
46//    signal(SIGCHLD, sigchld_handler);
47
48    if (!(nm = NetlinkManager::Instance())) {
49        LOGE("Unable to create NetlinkManager");
50        exit(1);
51    };
52
53
54    cl = new CommandListener();
55    nm->setBroadcaster((SocketListener *) cl);
56
57    if (nm->start()) {
58        LOGE("Unable to start NetlinkManager (%s)", strerror(errno));
59        exit(1);
60    }
61
62    /*
63     * Now that we're up, we can respond to commands
64     */
65    if (cl->startListener()) {
66        LOGE("Unable to start CommandListener (%s)", strerror(errno));
67        exit(1);
68    }
69
70    // Eventually we'll become the monitoring thread
71    while(1) {
72        sleep(1000);
73    }
74
75    LOGI("Netd exiting");
76    exit(0);
77}
78
79static void do_coldboot(DIR *d, int lvl)
80{
81    struct dirent *de;
82    int dfd, fd;
83
84    dfd = dirfd(d);
85
86    fd = openat(dfd, "uevent", O_WRONLY);
87    if(fd >= 0) {
88        write(fd, "add\n", 4);
89        close(fd);
90    }
91
92    while((de = readdir(d))) {
93        DIR *d2;
94
95        if (de->d_name[0] == '.')
96            continue;
97
98        if (de->d_type != DT_DIR && lvl > 0)
99            continue;
100
101        fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
102        if(fd < 0)
103            continue;
104
105        d2 = fdopendir(fd);
106        if(d2 == 0)
107            close(fd);
108        else {
109            do_coldboot(d2, lvl + 1);
110            closedir(d2);
111        }
112    }
113}
114
115static void coldboot(const char *path)
116{
117    DIR *d = opendir(path);
118    if(d) {
119        do_coldboot(d, 0);
120        closedir(d);
121    }
122}
123
124static void sigchld_handler(int sig) {
125    pid_t pid = wait(NULL);
126    LOGD("Child process %d exited", pid);
127}
128