Re: tar 1.35: --delete creates tarfiles with duplicate file paths

[Pavel Raiskup]

On pátek 11. srpna 2023 14:32:18 CEST Ed Santiago wrote:
> On Fri, Aug 11, 2023 at 08:33:03AM +0200, Sergey Poznyakoff wrote:
> > Hi Ed,
> > 
> > > The --delete flag in 1.35 can generate a tarball that is
> > > unreadable by podman and possibly other tools using the
> > > Go tar library:
> > 
> > Unfortunately I cannot reproduce it,
> > 
> > >     $ podman create --name a quay.io/libpod/testimage:20221018
> > >     $ podman export a >/tmp/a.tar
> > >     $ tar --delete -f /tmp/a.tar home/podman/pause
> > 
> > Can you send me the a.tar archive before and after delete.
> > or put them somewhere so I can download them?
> 
> Curious! It's 100% reproducible on my end. I've attached ante
> and post (before/after, but ASCII sortable) to:
> 
>     https://bugzilla.redhat.com/show_bug.cgi?id=2230127
> 
> ...and added a comment describing the dups found with
> 
>     tar tf a.post.tar | sort | uniq -cd

Is this related to some of the Fedora downstream patches?  FTR, here are
"vanilla" GNU tar RPM builds:
https://copr.fedorainfracloud.org/coprs/praiskup/tar-upstream-head/

The CI is has not been building for a few days now, needs upstream fix:
https://www.mail-archive.com/bug-tar@gnu.org/msg06277.html

Adding maintainer to CC.
Pavel

> Hope this helps,
> Ed
>