getpwent bug?
Dan Nelson
dnelson at allantgroup.com
Fri Jul 16 18:13:20 UTC 2010
In the last episode (Jul 16), Jens Rehsack said:
> On 07/16/10 15:07, Dan Nelson wrote:
> > In the last episode (Jul 16), Jens Rehsack said:
> >> Could you please take a look to my other mail (getgrent related) - there
> >> seems another bug ...
> >
> > Do you have another one-liner that will reproduce it? A simple
> > "/usr/bin/getent group" doesn't return dupes for me. Oddly enough, the
> > *grent code doesn't use an internal counter, so the bug you found in
> > endpwent doesn't exist in endgrent (afaik; the nsswitch code isn't that
> > easy to read).
>
> Not really a one-liner:
> perl -MData::Dumper -e 'setgrent; my %dupchk; while( my ( $name, $grpass,
> $gid, $members ) = getgrent() ) { print "$name is returned more than once
> (No $dupchk{$name} comes here)\n" if( $dupchk{$name}++ ); print Dumper( [
> $name, $grpass, $gid, $members ] ) };'
>
> setgrent() doesn't work here.
I ran that and got dupes for group entries that exist both in /etc/groups and
my LDAP source, but that's expected.
--
Dan Nelson
dnelson at allantgroup.com
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