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Date: Tue, 15 Apr 2014 12:13:07 +0400
From: Alexander Tsoy <alexander@tsoy.me>
To: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] [PATCH] fcaps.eclass: Group name portability
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=D0=92 Tue, 15 Apr 2014 12:06:44 +0400
Alexander Tsoy <alexander@tsoy.me> =D0=BF=D0=B8=D1=88=D0=B5=D1=82:

> =D0=92 Tue, 15 Apr 2014 11:11:53 +0900
> Naohiro Aota <naota@gentoo.org> =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
>=20
> > Diego Elio Petten=C3=B2 <flameeyes@flameeyes.eu> writes:
> >=20
> > > I'm pretty sure we have an eclass function to get the name of the
> > > 0 group.=20
> >=20
> > I can't find one... but found qmail.eclass is using exactly same
> > method.
> >=20
> > >       export GROUP_ROOT=3D"$(id -gn root)"
>=20
> "id -gn root" prints initial group name of the user root. This is
> exactly what you want in fcaps.eclass. In linux "id" accepts only
> username as argument, it doesn't support uid.
>=20

But if you really want to convert gid=3D0 to groupname, then use egetent()
as also noted by Cyprien:

inherit user
...
local group=3D$(egetent group 0)
group=3D${group%%:*}

--=20
Alexander Tsoy