allowing non root users to mount

Malcolm Kay malcolm.kay at
Fri Aug 29 20:42:47 PDT 2003

On Sat, 30 Aug 2003 07:30, Desmond Lee wrote:
> Hello
> Thank you for your reply.
> I don't understand how editing /etc/fbtab will help me provide a
> mounting point that is accessible to everyone. I believe that fbtab will
> just set the permissions of the device to whatever is specified in that
> file.
> For example, if I have the following in the /etc/fbtab file:
> /dev/ttyV0		0700		/dev/fd0
> then upon login, the floppy device (/dev/fd0) will have the permission:
> rwx------
> So, how does this relate to making a common mounting point? I want to
> make the common mounting point /floppy and set the permissions to
> rwxrwxrwx by doing a 'chmod 777 /floppy' but for some reason I still
> cannot mount the floppy as a regular user. It keeps on telling me that
> 'operation not permitted' and I have to su as root to get this to work.
> Why is this so? Shouldn't it be okay since I've set the permission of
> /floppy to be accessible to anyone?

Apart from everthing else you need 
# sysctl vfs.usermount=1
or add 
to /etc/sysctl.conf


> Thanks
> Desmond
> -----Original Message-----
> From: owner-freebsd-questions at
> [mailto:owner-freebsd-questions at] On Behalf Of Lowell Gilbert
> Sent: Friday, August 29, 2003 12:01 PM
> To: Desmond Lee
> Cc: freebsd-questions at
> Subject: Re: allowing non root users to mount
> Desmond Lee <desmond.lee at> writes:
> > I followed the instructions on the FAQ section about making non-root
> > users able to mount file systems and that worked fine, but it only
> works
> > if the target of the mounting point is accessible by that user.
> Right.  You want that for security reasons.
> > So, 'mount -t msdos /dev/fd0 ~/myFloppy'
> >
> > would only work if ~/myFloppy was a directory that was accessible by
> the
> > user who executed the mount command. Thus, if you were a non-root user
> > the stuff in the /etc/fstab would not be useful since the target of
> the
> > mount commands were only accessible by the root.
> Make the common mount point accessible to the console user.  fbtab(5)
> (or xdm's 'GiveConsole' script, etc.) will help here.

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