[ale] Writing to NFS

Michael D. Hirsch mhirsch at nubridges.com
Tue Nov 11 12:58:10 EST 2003


On Tuesday 11 November 2003 12:11 pm, David Corbin wrote:
> On Tuesday 11 November 2003 10:40, Dow Hurst wrote:
> > Why would the group suid bit be on?
> >
> > I would expect:
> >
> > drwxr-xr-x
> >
> > but not with suid bits set on a mount point.  Is there some special
> > group that needs suid access?
> > Dow
>
> Doesn't that ensure that child files and directories inherit those
> permissions, as opposed to actually giving suid access?

I believe it means that any files will be owned by that group, instead of 
whatever the primary group of any writer might be.

Michael

> > David Corbin wrote:
> > >On Tuesday 11 November 2003 10:24, Dow Hurst wrote:
> > >>Your underlying mount point's permissions override the mount
> > >> permissions in IRIX.  I haven't tested this in Linux.  Umount the
> > >> filesystem and check to see if the mount point is writeable by root.
> > >
> > >Here is the umounted mount point.
> > >
> > >drwxr-sr-x   69 dcorbin  dcorbin      4096 Nov 11 10:30 foobar/
> > >
> > >>Dow
> > >>
> > >>David Corbin wrote:
> > >>>Can someone explain why the file system is read-only?  mount says it's
> > >>>not. /etc/exports has the rw option on it.
> > >>>
> > >>>$ mount | tail -1
> > >>>foobar:/home/dcorbin on /data/home/dcorbin/foobar type nfs
> > >>>(rw,noexec,nosuid,nodev,addr=192.168.99.3,user=dcorbin)
> > >>>$ pwd
> > >>>/data/home/dcorbin/foobar
> > >>>$ echo >junk
> > >>>-bash: junk: Read-only file system



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