good question, it should be possible in principle, especially since it has been done in javese's version of fbreader for e-ink on the PE
https://www.mobileread.com/forums/sho...d.php?t=154024
(and the sources are accessible on github,
https://github.com/javese/FBReaderJ )
another comment, I have to change permissions after each reboot since the systems puts them back to the original ones ...