Re: Mount /cdrom as non-root user - does this actually work for anyone?

From: Tom McLaughlin (tmclaugh_at_sdf.lonestar.org)
Date: 01/04/04

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    To: Stacey Roberts <stacey@vickiandstacey.com>
Date: Sun, 04 Jan 2004 00:48:15 -0500

    On Sat, 2004-01-03 at 20:13, Stacey Roberts wrote:
    > Hello,
    > Thanks for the reply..,
    >
    > ----- 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 for anyone?
    >
    > > 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 user:
    > > > exit
    > > > ~ $ mount /cdrom
    > > > cd9660: /dev/acd0c: Operation not permitted
    > > > ~ $ mount -t cd9660 /dev/acd0c ~/cdrom
    > > > cd9660: /dev/acd0c: Operation not permitted
    > > > ~ $
    > > >
    > > > 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
    > > > ~ $
    > >
    > > chmod +s /sbin/umount /sbin/mount
    > >
    > > works fine for me (without any other changes necessary). Don't know
    > > if it's the recommended procedure though.
    > >
    >
    > 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 straight-forward instructions on what (presumably) is I hoped is a simple procedure.., I'd not want to start making undocumented config changes.
    >
    > Thanks all the same for taking the time to respond.
    >
    > Regards,
    >
    > Stacey
    >
    > > Gautam
    > >

    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.

    Tom

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