public int getFileOff(int off, Ext2SuperBlock sb) {
if (off > i_size) {
return -1;
}
int block = off / sb.getBlockSize();
int innerOff = off % sb.getBlockSize();
if (block > 12) {
return -1;
}
return (int) (i_block[block] * sb.getBlockSize() + innerOff);
}
public int getRemain(int off, Ext2SuperBlock sb) {
return sb.getBlockSize() - off % sb.getBlockSize();
}