public int getBlockOffset() {
		return blockOffset;
	}
Calculate the derived variables for this file
@param reader A binary reader with pointer index at the start of the inode data
@param superBlock The superblock for the current archive
@throws IOException Any read operation failure
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/squashfs/SquashBasicFileInode.java