1 /*
2 * Copyright (C) 2012 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 <cutils/uevent.h>
18 #include <stdio.h>
19
20 #define UEVENT_MSG_LEN 1024
21
main(int argc,char * argv[])22 int main(int argc, char *argv[])
23 {
24 int device_fd;
25 char msg[UEVENT_MSG_LEN+2];
26 int n;
27 int i;
28
29 device_fd = uevent_open_socket(64*1024, true);
30 if(device_fd < 0)
31 return -1;
32
33 while ((n = uevent_kernel_multicast_recv(device_fd, msg, UEVENT_MSG_LEN)) > 0) {
34 msg[n] = '\0';
35 msg[n+1] = '\0';
36
37 for (i = 0; i < n; i++)
38 if (msg[i] == '\0')
39 msg[i] = ' ';
40
41 printf("%s\n", msg);
42 }
43
44 return 0;
45 }
46