Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [PATCH] bug in setpgid()? process groups and thread groups | From | Nicholas Miell <> | Date | 02 Aug 2003 13:30:11 -0700 |
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On Sat, 2003-08-02 at 12:08, Roland McGrath wrote: > The problem exists with uids/gids as well, in the sense that they are > changed per-thread but POSIX semantics are that setuid et al affect the > whole process (i.e. all threads in a thread group).
Is there any particular reason why the POSIX semantics are desirable (besides "that's the way POSIX says it should be")?
Personally, I can think of no benenfit to per-process uids/gids, and several scenarios where per-thread uids/gids would be good. (Think of a multi-threaded server handling connections from N different users on N threads, or a 1 thread per CPU server handling many different user connections, or a multi-threaded web server running perl/php/etc. stuff as different users in different threads.)
Just wondering, Nicholas.
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