Date: Sun, 4 Jan 2004 13:31:06 +0000 From: Stacey Roberts <stacey@vickiandstacey.com> To: Tom McLaughlin <tmclaugh@sdf.lonestar.org> Cc: Stacey Roberts <stacey@vickiandstacey.com> Subject: Re: Mount /cdrom as non-root user - does this actually work for anyone? Message-ID: <20040104133106.GN6131@crom.vickiandstacey.com> In-Reply-To: <1073195295.318.14.camel@compass> References: <20040104005352.GI6131@crom.vickiandstacey.com> <20040104005929.GA70684@madras.dyndns.org> <20040104011313.GJ6131@crom.vickiandstacey.com> <1073195295.318.14.camel@compass>
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Hello,
Thanks for the reply.
----- Original Message -----
From: "Tom McLaughlin <tmclaugh@sdf.lonestar.org>"
To: To Stacey Roberts
Date: Sun, 04 Jan, 2004 05:48 GMT
Subject: Re: Mount /cdrom as non-root user - does this actually work for an=
yone?
> On Sat, 2004-01-03 at 20:13, Stacey Roberts wrote:
> > Hello,
> > Thanks for the reply..,
> >=20
> > ----- Original Message -----
> > From: "Gautam Gopalakrishnan <ggop@madras.dyndns.org>"
> > To: To Stacey Roberts
> > Date: Sun, 04 Jan, 2004 00:59 GMT
> > Subject: Re: Mount /cdrom as non-root user - does this actually work fo=
r anyone?
> >=20
> > > On Sun, Jan 04, 2004 at 12:53:52AM +0000, Stacey Roberts wrote:
> > > > Hello,
> > > > As root I can mount and read the CD fine.., checking for non-root u=
ser:
> > > > exit
> > > > ~ $ mount /cdrom
> > > > cd9660: /dev/acd0c: Operation not permitted
> > > > ~ $ mount -t cd9660 /dev/acd0c ~/cdrom
> > > > cd9660: /dev/acd0c: Operation not permitted
> > > > ~ $
> > > >=20
> > > > Attempting to mount to mount-point in user home dir:
> > > > ~ $ cd ~
> > > > ~ $ pwd
> > > > /home/stacey
> > > > ~ $ ls -ltra cdrom
> > > > total 6
> > > > drwxr-xr-x 2 stacey stacey 512 Jan 3 23:50 ./
> > > > drwxr-xr-x 31 stacey stacey 2560 Jan 3 23:50 ../
> > > > ~ $ mount -t cd9660 /dev/acd0c ~/cdrom
> > > > cd9660: /dev/acd0c: Operation not permitted
> > > > ~ $
> > >=20
> > > chmod +s /sbin/umount /sbin/mount
> > >=20
> > > works fine for me (without any other changes necessary). Don't know
> > > if it's the recommended procedure though.
> > >=20
> >=20
> > Nor I, to be honest.., I'm not sure about setting the suid bit on mount=
.., Given that the HandBook provides what I thought would have been straigh=
t-forward instructions on what (presumably) is I hoped is a simple procedur=
e.., I'd not want to start making undocumented config changes.
> >=20
> > Thanks all the same for taking the time to respond.
> >=20
> > Regards,
> >=20
> > Stacey
> >=20
> > > Gautam
> > >=20
>=20
> Stacey, what are permissions of /dev/acd0c? The handbook example
> changes the permissions of a SCSI cdrom. I made the mistake of not
> noticing this when I first tried to do make my cdrom user mountable.
>=20
$ ls -la /dev/acd*
crw-r----- 4 root operator 117, 0 Nov 9 14:21 /dev/acd0a
crw-r----- 4 root operator 117, 0 Nov 9 14:21 /dev/acd0c
$
That's what the permissions are like after running through the procedure in=
the HandBook. On that note, fr the record, on all machines, there are IDE =
CDROM drives and one IDE CD-RW drive that I've got here.
Thanks again.
Regards,
Stacey
> Tom
>=20
--=20
Stacey Roberts
B. Sc (HONS) Computer Science
Web: www.vickiandstacey.com
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