#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>

int
fill_with_zeroes(const char *filename)
{
	int fd = open(filename, O_WRONLY);
	if(fd == -1) {
		printf("Error reading file: %i = %s\n", errno, strerror(errno));
		return 1;
	}
	struct stat stat_struct; /* What name should i use? */
	stat(filename, &stat_struct);
	long int bytes_to_write = stat_struct.st_size;
	char *buf = NULL;

	buf = malloc(bytes_to_write);
	for(int i = 0; i < bytes_to_write; i++)
		write(fd, "\0\0\0\0\0", bytes_to_write + 2048);
	free(buf);
	return 0;
}

int
main(int argc, char *argv[])
{
	int c = getopt(argc, argv, "u"); /* TODO: add -f */

	fill_with_zeroes(argv[1]);
	if(c == 'u')
		remove(argv[1]);
}