#include<stdio.h>
#include<sys/stat.h>
#include<fcntl.h>

int load_block(char *file_name, char *t)
{
	int len = 0, i, handle;

	handle = open(file_name, O_RDONLY, 0);
	if (handle == -1) {
		close(handle);
		return -1;
	}
	else {
		while ((i = read(handle, t, 16384)) > 0) {
			t += i;
			len += i;
		}
		close(handle);
		return len;
	}
}
int save_block(char *file_name, char *t, int len)
{
	int i, handle;

	handle = creat(file_name, S_IREAD | S_IWRITE);
	if (handle == -1) {
		close(handle);
		return -1;
	}
	else {
		i = write(handle, t, len);
		close(handle);
		return (i == len) ? 1 : 0;
	}
}