[ILUG] NFS help, please - exporting and mounting /home

[Wesley Darlington]

Hi,

On Tue, Mar 21, 2000 at 01:11:59PM +0000, William Murphy wrote:
> Cormac McClean wrote:
> 
> >
> > I can mount this from a PC on the network as
> >         mount 193.1.31.83:/home /nfs_test
> > and I can see the contents of this directory:
> >         cormac
> >         lost+found
> > I can also see the contents of the lost+found
> > directory.
> >
> > However, when I look at /home/cormac, it reports
> > that the directory is empty:
> >         ls -l /nfs_test/cormac (i.e. /home/cormac)
> >         total 0
> >
> > Is this because this is a user's home directory?
> > If so, how do I export it and mount it?
> >
> > I have acquired a copy of Managing NIS and NFS,
> > but it does not appear to cover this issue.
> 
> Well, chances are that root squashing is on. This means that root probably has
> the same privelidges as nobody for looking at files. The effect of this is
> that you can't see any files in a readonly directory. You can turn off root
> squashing by adding no_root_squash to the line in /etc/exports (and restarting
> your nfsd) for example:
> /home (rw,no_root_squash)
> 
> This raises the security consideration that anyone who has root on the client
> machine can read (or modify in the above example) anyone elses files.

If you have root on the client, you can just su to the user who /does/
own the file and change it, regardless of root squashing.

Wesley.