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Ghosts of Unix past, part 4: High-maintenance designsGhosts of Unix past, part 4: High-maintenance designsPosted Nov 23, 2010 22:31 UTC (Tue) by foom (subscriber, #14868)In reply to: Ghosts of Unix past, part 4: High-maintenance designs by nix Parent article: Ghosts of Unix past, part 4: High-maintenance designs
Well, even without a suid bit, you still want to be able to switch effective UIDs while preserving the ability to switch back, so that you can do work on behalf of a user using that user's credentials. E.g. accessing files on the filesystem.
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Ghosts of Unix past, part 4: High-maintenance designs Posted Nov 24, 2010 8:16 UTC (Wed) by nix (subscriber, #2304) [Link]
Yes, but if you were designing a new system from scratch, would you choose to do that the way Unix has? I know I wouldn't.
(And you mean 'while *optionally* preserving the ability to switch back': a lot of programs really don't want to keep that ability.)
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