C++程序  |  54行  |  1.19 KB

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <asm/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <fcntl.h>

int test_touch_fwu(){
    char* dev_name = "/dev/touch_fwu";
    int fd = open(dev_name, O_RDWR);

    if (fd < 0)	{
	return -1;
    }

    size_t buf_len = 0xfffff;
    char* buf = (char*) malloc(buf_len);
    if (buf == NULL ) {
	return -1;
    }

    int ret = 0;
    ret = write(fd, buf, buf_len);
    free(buf);
    return ret;
}

int main()
{
    test_touch_fwu();
    return 0;
}