1 /*
2  * Copyright (C) 2017 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 #define _GNU_SOURCE
17 
18 #include <stdio.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <unistd.h>
22 #include <errno.h>
23 #include <asm/ioctl.h>
24 #include <sys/types.h>
25 #include <sys/wait.h>
26 #include <fcntl.h>
27 
test_touch_fwu()28 int test_touch_fwu(){
29     char* dev_name = "/dev/touch_fwu";
30     int fd = open(dev_name, O_RDWR);
31 
32     if (fd < 0)	{
33 	return -1;
34     }
35 
36     size_t buf_len = 0xfffff;
37     char* buf = (char*) malloc(buf_len);
38     if (buf == NULL ) {
39 	return -1;
40     }
41 
42     int ret = 0;
43     ret = write(fd, buf, buf_len);
44     free(buf);
45     return ret;
46 }
47 
main()48 int main()
49 {
50     test_touch_fwu();
51     return 0;
52 }
53 
54