Re: [SOLVED] Adding default user to some other groups

[Richard Nelson <unixabg@gmail.com>]

Greetings,

On Sun, Jan 22, 2012 at 10:47 AM, Nick Bailey <nick@n-ism.org> wrote:
> Thank you all (and particularly chals) for your suggestions as to how
> to add the default user to an additional group.

Please know that your testing and working with live-build is appreciated.

> Using 3.0~a42-1, I can
> report the following.
>
> Preseeding
> ----------
>
> Doesn't work.
>
> Test: in config/preseed/user-groups.preseed.chroot,
>
>        user-setup passwd/user-default-groups string [space-separated groups]
>
> Result: The default user is not added to (at least some) of the groups in
> the list.
>

If you believe the issue to be reproducible, it is best to file a bug
report. So it can be documented and resolved.

>
> Live-config boot paramter
> -------------------------
>
> Ignored.
>
> Test: auto/config contains the following option (among others)
>
>         --bootappend-live "locales=en_GB.UTF-8 keyboard-layouts=gb user-default-groups=audio,cdrom,dip,floppy,video,plugdev,netdev,powerdev,scanner,bluetooth,iocard persistent"
>
> Result: user "user" belongs only to group "user".
>
> I examined the script in chroot/lib/live/config/002-user-setup and this seems
> to intend to set the environment variable LIVE_USER_DEFAULT_GROUPS if a
> boot-time parameter user-default-groups or live-config.user-default-groups
> is supplied. Presumably this would become a comma-separated lists of groups,
> not a space-separated one as in the preseed method... not sure if that's
> significant?
>


Same as above on this as well.


>
> Add own configure script
> ------------------------
>
> Works!
>
> Noting that 002-user-setup calls /usr/lib/user-setup/user-setup-apply
> which in turn adds the user to each group in the result of
> db_get passwd/user-default-groups (line 144 et seq.), we can supply a script
> which calls add user thus:
>
> 8><----
> root@ingrid:~/smrg-live/chroot# cat lib/live/config/500-add-user-to-iocard-group
> #!/bin/sh
>
> echo
> echo "NB: live-config: adding user to group iocard"
> adduser user iocard
>
> 8><----
>
> Result: the script "does the right thing", adding user to group iocard
> on the first boot. Since I'm using a persistent live-rw, subsequent boots
> result in an error message to the effect that user is already a member of
> group iocard, but I can cope with that :)
>
> I don't understand why adding a kernel boot parameter specifying
> user-default-groups=... fails to work, and I don't think I'm really
> competent to go messing around in the live config scripts (esp as I'm
> slightly allergic to perl). It does seem that a boot parameter would
> be a far better method of doing this though. I also don't understand
> why the preseeding fails, nor where the commas separating the group names
> get converted to spaces. But the documentation quite consistently
> shows commas in some lists and spaces in others, so I suppose that's right.
>
> I should probably improve the script so it doesn't attemtp to add the
> user to iocard on every boot, but would actually prefer to get the boot
> parameter working and remove the script all toghether.
>
> Hope this helps somebody.
>
> Nick/.
>