Messages in this thread |  | | Date | Tue, 27 Aug 2002 13:08:04 -0600 (MDT) | From | Thunder from the hill <> | Subject | Re: problems with changing UID/GID |
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Hi,
On Tue, 27 Aug 2002, Chris Wedgwood wrote: > On Tue, Aug 27, 2002 at 09:42:27AM -0600, Thunder from the hill wrote: > > I don't think this is cool. I mean, think of how many times we use > it, who will eat the overhead? > > We use it almost never... a few times per process at most. And the > overhead will be nonexistent except in cases where the caller has to > wait on the lock --- and in those cases it seems totally reasonable they > *should* have to wait.
And how do you protect a caller from having to wait for the lock? You'd need a lock count here, where you can only change the credentials when the count is zero. But when will that ever be?
And btw, the count bumping/downing does cost. We need to do that sensibly.
Thunder -- --./../...-/. -.--/---/..-/.-./..././.-../..-. .---/..-/.../- .- --/../-./..-/-/./--..-- ../.----./.-../.-.. --./../...-/. -.--/---/..- .- -/---/--/---/.-./.-./---/.--/.-.-.- --./.-/-.../.-./.././.-../.-.-.-
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