Messages in this thread |  | | Subject | Re: thread group comments | Date | Fri, 1 Sep 2000 23:08:05 +0100 (BST) | From | Alan Cox <> |
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> > 3rd Problem: one uid/gid process-wide > > > > All the ID (uid/guid/euid/egid/...) must be process wide. The problem > > is similar to the signal handler. I think one should again keep the > > information exclusively in the master thread and have all others refer > > to this information. > > No, it would be another "clone" option.
You dont want it in kernel space. Not unless you plan to lock uid/gid access and make them atomic. Think about things like file operations where the uid changes under you on another CPU as you walk a directory tree checking permissions..
Quota looks even more horrible.
Its also very rare and not a performance case to push into glibc
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