/*
 * 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;

/*file descriptor init*/
#define NR_OPEN 10
#define FS_INIT { [0 ... NR_OPEN-1] = {NULL, 0, 0} }

/*open flags*/

//#define O_RDONLY 	0
//#define O_WRONLY 	1
#define O_RDWR	2

#define O_CREAT 	64
#define O_EXCL 	128
//#define O_NOCTTY 	256
#define O_TRUNC 	512
#define O_APPEND 	1024


int main(int argc, char** argv)
{
	int i, testfile;
	char* teststr;

	for(i=0; environ[i]; i++)
		printf("environ[%d] = %s\n", i, environ[i]);
	for(i=0; i<argc; i++)
		printf("argv[%d] = %s\n", i, argv[i]);

	teststr = malloc(sizeof(char)*100);
	if (!teststr)
		return EFAULT;

	testfile = open("/bin/test.txt", O_CREAT | O_EXCL, "wr");
	write(testfile, "hello in new file '/bin/test.txt'", 34);
	lseek(testfile, 0, SEEK_SET);
	read(testfile, teststr, 100);
	close(testfile);

	printf("read from new file: %s\n", teststr);

	return errno;
}