Mount /cdrom as non-root user - does this actually work for
stacey at vickiandstacey.com
Sat Jan 3 20:27:13 PST 2004
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?
> 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.
> Just a guess for I cannot see an obvious error.
B. Sc (HONS) Computer Science
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