Messages in this thread | | | From | Al Boldi <> | Subject | Re: [PATCH -mm 5/7] add user namespace | Date | Sat, 15 Jul 2006 20:39:50 +0300 |
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Trond Myklebust wrote: > On Sat, 2006-07-15 at 06:35 -0600, Eric W. Biederman wrote: > > I hope the confusion has passed for Trond. My impression was he > > figured this was per process data so it didn't make sense any where > > near a filesystem, and the superblock was the last place it should > > be. > > You are still using the wrong abstraction. Data that is not global to > the entire machine has absolutely _no_ place being put into the > superblock. It doesn't matter if it is process-specific, > container-specific or whatever-else-specific, it will still be vetoed. > > If your real problem is uid/gid mapping on top of generic filesystems, > then have you looked into the *BSD solution of using a stackable > filesystem (i.e. umapfs)?
A stackable FS is really overkill here, when all that is needed is a simple mapping. An easy solution would be, to allow for perMount Handlers via hooks into the VFS, as was suggested in the '[RFC] VFS: FS CoW using redirection' thread.
Thanks!
-- Al
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