Quote:
Originally Posted by davidfor
I'm pretty sure it won't change the permissions and ownership.
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It does change permissions and ownerships of the files according to what's in the tar. Technically all tar should have root as owner and group but so far I've been too lazy to add the necessary --owner --group options to tar.
In practice it makes no difference. Everything on the Kobo runs as root anyway, and root does not care about wrong owners. So the only thing that really matters is the executable flag needed for binaries/scripts.
Of course, if you DO set the suid flag and the owner is wrong, then it really bites you as suddenly you execute stuff as nobody instead of root. Here suid causes problems instead of solving them.
suid on busybox is a bad idea. It would suid _everything_, not just passwd. So nobodies can overwrite files etc. etc. etc.
EDIT: I was wrong about busybox+suid, apparently busybox can handle it. Thanks @fastrobot for pointing that out to me
you learn something new every day