metalsvm/newlib/examples/hello.c

/*
 * Copyright 2010 Stefan Lankes, Chair for Operating Systems,
 *                               RWTH Aachen University
 *
 * 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.
 *
 * This file is part of MetalSVM.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#undef errno
extern int errno;

int main(int argc, char** argv)
{
	//int i;
	char* str = (char *)malloc(20 * sizeof(char));
	FILE* testfile;
	testfile = fopen("/bin/test", "w+r");
	setbuf(testfile, NULL);
	fflush(NULL);
	fwrite("wsblablaxxxyyyyzzzzzz", 1, 19, testfile);
	fclose(testfile);

	testfile = fopen("/bin/test", "w+r");
	setbuf(testfile, NULL);
	fread(str, 1, 20, testfile);
	fflush(NULL);
	printf("Aus Datei gelesen (/bin/test):%s\n", str);

	return errno;
}