Re: Accessing /dev/mem
Quoting Ethan Benson (erbenson@alaska.net):
> On 11/1/2000 Cameron Matheson wrote:
>
> >Alright, I need help badly. Programs on my linux can not open "/dev/mem."
> >Because permission is denied. The permissions are:
> >
> >crw-rw---- 1 4755 kmem 1, 1 Feb 22 1999 mem
> >
> >Why can't programs access this??? My CD-ROM always gives me "Permission
> >Denied" errors too. (In my fstab, the options I have set are noauto,user)
>
> well those permissions are wrong, that file should be owned by root
> and the group should not have write permission
>
> chown root /dev/mem ; chmod 640 /dev/mem
Are you talking potato here? All my stable/slink systems show precisely:
crw-r----- 1 root kmem 1, 2 Mar 3 1999 kmem
crw-rw---- 1 root kmem 1, 1 Mar 3 1999 mem
and that includes the dates. (I included kmem in case you'd misread
the line.)
(I have no idea what these devices do.)
Cheers,
--
Email: d.wright@open.ac.uk Tel: +44 1908 653 739 Fax: +44 1908 655 151
Snail: David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA
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official stationery. Views expressed here are either my own or plagiarised.
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