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

[Stacey Roberts]

Hello,
     Thanks for the kind reply..,

----- Original Message -----
From: "Joerg Pernfuss <elessar at galgenberg.net>"
To: To freebsd-questions at freebsd.org
Date: Sun, 04 Jan, 2004 03:44 GMT
Subject: Re: Mount /cdrom as non-root user - does this actually work for anyone?

> Hi
> 
> On Sun, 4 Jan 2004 01:13:13 +0000
> Stacey Roberts <stacey at vickiandstacey.com> wrote:
> 
> > Hello,
> >      Thanks for the reply..,
> > 
> > > [....]
> > > 
> > > 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..,
> > [....]
> 
> The setuid bit on mount/umount should also enable mounting/unmounting of
> fixed disks, not only removeable media. Not sure if this is what you
> intended at first hand...
> 

Well., what I intended is to follow the instructions as laid out in the HandBook - which isn't working for me.

> (4:31:01) elessar at aragorn: ~> sysctl -a |grep usermount
> vfs.usermount: 1
> (4:31:44) elessar at aragorn: ~> id
> uid=1001(elessar) gid=3000(users) groups=3000(users), 0(wheel), 5(operator), 191(trusted), 666(ssh)
> (4:31:48) elessar at aragorn: ~> ll /dev/cd0c
> crw-r-----  1 root  operator   15,   0 Jan  2 19:19 /dev/cd0c
> (4:32:02) elessar at aragorn: ~> ll -a cdrom/
> total 6
> drwxr-xr-x   2 elessar  users   512 Oct 13 20:04 .
> drwx------  46 elessar  users  2560 Jan  3 16:04 ..
> (4:35:03) elessar at aragorn: ~> ll /sbin/mount_cd9660 
> -r-xr-xr-x  1 root  wheel  85812 Dec 24 11:49 /sbin/mount_cd9660
> (4:35:16) elessar at aragorn: ~> mount_cd9660 /dev/cd0c cdrom/
> (4:35:52) elessar at aragorn: ~> ls cdrom/
> 5.1-RELEASE     INSTALL.HTM     boot            compat22        floppies        src
> EARLY.HTM       INSTALL.TXT     boot.catalog    compat3x        games           tools
> EARLY.TXT       README.HTM      catpages        compat4x        info
> ERRATA.HTM      README.TXT      cdrom.inf       crypto          manpages
> ERRATA.TXT      RELNOTES.HTM    compat1x        dict            packages
> HARDWARE.HTM    RELNOTES.TXT    compat20        doc             ports
> HARDWARE.TXT    base            compat21        docbook.css     proflibs
> (4:35:59) elessar at aragorn: ~> umount cdrom/
> (4:36:07) elessar at aragorn: ~> ls cdrom/
> (4:36:20) elessar at aragorn: ~> 
> 
> This is from a RELENG_5_1 machine but I never had problems with
> usermount on 4.x up to 4.8 either. Did you maybe change the permissions
> on /sbin?

I haven't touched anything to do with the cdrom devices on *any* of the machines here, nor have I ever had any cause to edit the permissions on any of the bin dirs.., Please understand my position here.., I don't *ever* stray away from standard installations, application configs, etc.., For the very reason that you have asked about "whether or not I've changed something"., Everything on this system is as stock as can be.., barring the userland appliacations for Gnome-2.4

Thanks again for the reply.

Regards,


Stacey

> Just a guess for I cannot see an obvious error.
> 
> Regards,
> Joerg



-- 
Stacey Roberts
B. Sc (HONS) Computer Science

Web: www.vickiandstacey.com