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Re: [Libguestfs] [PATCH] sysprep: user-account: remove the correct home



On Tuesday 02 September 2014 16:54:12 Richard W.M. Jones wrote:
> On Tue, Sep 02, 2014 at 05:33:26PM +0200, Pino Toscano wrote:
> > Query using augeas for the home directory of an user, instead of
> > hardcoding /home/<username>.
> > ---
> > 
> >  sysprep/sysprep_operation_user_account.ml | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/sysprep/sysprep_operation_user_account.ml
> > b/sysprep/sysprep_operation_user_account.ml index 3d88ffc..dc194f4
> > 100644
> > --- a/sysprep/sysprep_operation_user_account.ml
> > +++ b/sysprep/sysprep_operation_user_account.ml
> > @@ -84,6 +84,8 @@ let user_account_perform ~verbose ~quiet g root
> > side_effects => 
> >            String.sub userpath (i+1) (String.length userpath -i-1)
> >            in
> >          
> >          if uid >= uid_min && uid <= uid_max
> >          
> >             && check_remove_user username then (
> > 
> > +          (* Get the home before removing the passwd entry. *)
> > +          let home_dir = g#aug_get (userpath ^ "/home") in
> 
> I suspect you'll want to catch an exception here (G.Error I _think_?)

Hm ok.

> Not sure how to handle the exception -- perhaps by ignoring the user
> and continuing to the next one, and certainly by not deleting any
> directories ...

So should the user still be removed? In such case, I guess something 
like (simplified):

  let home_dir =
    try Some g#aug_get (userpath ^ "/home")
    with _ ->
      if verbose then warning "Cannot get the home directory for $user";
      None in
  ...
  match home_dir with
  | None -> ()
  | Some dir -> g#rm_rf dir

?

-- 
Pino Toscano


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