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 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 48 int main() 49 { 50 test_touch_fwu(); 51 return 0; 52 } 53 54
