Messages in this thread | | | Subject | Re: [PATCH 3/4] autofs4 - track uid and gid of last mount requestor | From | Ian Kent <> | Date | Thu, 28 Feb 2008 17:06:11 +0900 |
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On Wed, 2008-02-27 at 23:59 -0800, Andrew Morton wrote: > On Thu, 28 Feb 2008 10:51:08 +0300 Pavel Emelyanov <xemul@openvz.org> wrote: > > > > So, why do we need the uid and gid? When someone walks over an autofs > > > dentry that is meant to cause a mount we send a request packet to the > > > daemon via a pipe which includes the process uid and gid, and as part of > > > the lookup we set macros for several mount map substitution variables, > > > derived from the uid and gid of the process requesting the mount and > > > they can be used within autofs maps. > > > > Why do we need the uid then? Is just pid not enough to uniquely > > identify a task? > > The problem is that the userspace daemon is restarted. ie: it exits > and is re-run. It then needs to pick up various state from its previous > run.
Dumb old me, I really only need the uid. The gid can come from the get user info functions of glibc. DOH!
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