my @commits = qw(user secg something more here) ;
my @rollbacks ;
my $do_rollback ;

# dispatch table for commits
my %dt_commit = (
  user => sub {
            # try to update an entry or die
            # ...code here...
          },
  secg => sub {
            # try to update another entry or die
            # ...code here...
          },
  # ... et cetera...
) ;

my %dt_rollback = (
  # same as above, but this dispatch table contains
  # rollback subs instead of commit ones
) ;

foreach my $cmt (@commits) {
  eval { &{$dt_commit{$cmt}} } ;
  if ($@) {
    @rollbacks = reverse @rollbacks ;
    $do_rollback = 'yes' ;
    last ;
  }

  push @rollbacks,$cmt ;
}

if ($do_rollback) {
  foreach my $rbk (@rollbacks) {
    # execute the rollback subs here
  }

  die "Something weird happened, stopping!" ;
}