Hello,
I have a server that has to switch to different user ids, but because it does
other complex things, I would rather not have it run as root. I only need the
server to be able to switch to certain pre-defined user ids.
I have seen that two possible solutions have already been suggested here on
the LKML, but it was some years ago, and nothing like it has been
implemented.
(1) Having supplementary user ids like there are supplementary group ids and
system calls getuids() and setuids() that work like getgroups() and
setgroups()
(2) Allowing processes to pass user and group ids via sockets.
Both (1) and (2) would solve my problem. Now my question is whether there are
any fundamental flaws with (1) or (2), or whether the right way to solve my
problem is another one.
Giuliano
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