Re: [Umbrella-devel] Re: Getting full path from dentry in LSM hooks

[Kristian Sørensen]

Hi Christoph!

Christoph Hellwig wrote:
> On Fri, Sep 03, 2004 at 02:12:21PM +0200, Kristian Sørensen wrote:
>
> > I have a short question, concerning how to get the full path of a file 
> > from a LSM hook.
> >
> > - If the "file" of the dentry is located in the root filesystem: no
> >   problem - simply traverse the dentrys, to generate the path.
> >
> > - If the "file" is mounted from another partition, you do not get the
> >   full path by traversing the dentrys.
>
>
> There is no canonical full path for a given dentry.
Is there another way to get it? We also get an inodepointer from the LSM 
hook. As far as I know, the file struct has an entry called vfs_mount, 
which has an entry called root_mnt - could this be used? (and if so, how 
do I get from the Inode to the file struct? :-/ )


KS.
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