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
36 static void coldboot(const char *path);
37 static void sigchld_handler(int sig);
38
main()39 int 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
do_coldboot(DIR * d,int lvl)79 static 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
coldboot(const char * path)115 static 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
sigchld_handler(int sig)124 static void sigchld_handler(int sig) {
125 pid_t pid = wait(NULL);
126 LOGD("Child process %d exited", pid);
127 }
128