[pacman-dev] Non-existing user/group ownership and chroot

[Andrew Gregory]

On 03/06/17 at 05:40pm, Armin K. wrote:
> On 06.03.2017 14:45, Andrew Gregory wrote:
> > On 03/06/17 at 10:12am, Armin K. wrote:
> > > On 06.03.2017 00:17, Armin K. wrote:
> > > > On 06.03.2017 00:10, Allan McRae wrote:
> > > > > On 06/03/17 09:04, Armin K. wrote:
> > > > > > On 06.03.2017 00:00, Allan McRae wrote:
> > > > > > Entries are alright in .MTREE (correct gid's). I don't suppose pacman
> > > > > > does something odd there? Why doesn't it use those uid's/gid's?
> > > > > > 
> > > > > > If you could point me to the part in the pacman code which does the
> > > > > > extraction, I might be able to find a solution (at least for myself).
> > > > > > 
> > > > > 
> > > > > Extraction is just taking files out of the tarball.  Note that the
> > > > > tarball store files with UID/GID numbers and not names.
> > > > > 
> > > > > A
> > > > > 
> > > > 
> > > > Oh my. Something else is at play here. Manually extracted tarball
> > > > contains wrong permissions, .MTREE file reports correct permissions.
> > > > 
> > > > pkg/ directory is sadly only owned by the build user. I suppose
> > > > something between package() and the tarball creation (or just
> > > > the tarball creation) screws things up. Any ideas what it might be?
> > > > 
> > > > libarchive version is 3.3.0.
> > > > fakeroot is 1.20.1.
> > > 
> > > This is indeed libarchive/bsdtar problem. The permissions are just fine
> > > when extracted in chroot, but not when extracted from outside of it.
> > > 
> > > Looks like behaviour changed, and that tarball stores uid/gid isn't
> > > true (anymore). Directory owned by a certain user is owned by the
> > > same user in and outside of chroot, besides two of them having different
> > > uids/gids.
> > 
> > This sounds like the expected behavior.  The user/group names are
> > stored in the archive if they exist on the system building the package
> > and bsdtar will use the names rather than the id's by default when
> > extracting the archive.
> > 
> > apg
> > 
> 
> I've contacted libarchive devs and they suggested --numeric-owner bsdtar
> option. It works just as I expect it to.

pacman already only uses the numeric id's during extraction.