Date: Mon, 27 Mar 2000 14:57:39 +0200 (CEST) From: marcolz@stack.nl To: FreeBSD-gnats-submit@freebsd.org Subject: bin/17619: pax cannot read all tar files created by tar. Message-ID: <20000327125739.7FF719713@toad.stack.nl>
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>Number: 17619
>Category: bin
>Synopsis: pax cannot read all tar files created by tar.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 27 05:00:01 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: Marc Olzheim
>Release: FreeBSD 3.4-RELEASE i386
>Organization:
M.C.G.V. Stack
>Environment:
>Description:
When trying to read a tar file created by GNU-tar or Solaris's tar,
pax asks for another archive. It seems to misinterpret the tar-header.
Some sizes of tar's will be handled just right, others don't.
>How-To-Repeat:
prompt> dd if=/dev/zero of=foo bs=1759830 count=1
prompt> tar cf bar.tar foo
prompt> pax -vf bar.tar
-rw-r--r-- 1 marcolz wheel 1759830 Mar 27 14:52 foo
pax: End of archive volume 1 reached
pax: ustar vol 1, 1 files, 1761280 bytes read, 0 bytes written.
ATTENTION! pax archive volume change required.
Ready for archive volume: 2
Input archive name or "." to quit pax.
>Fix:
A work around for this specific example is to do:
prompt> { cat bar.tar ; dd if=/dev/zero bs=512 count=1 ; } | pax -v
But in general it seems like a good idea to just add a complete
<blocksize> block of zeroes, i.e. 10k, so:
prompt> { cat bar.tar ; dd if=/dev/zero bs=10k count=1 ; } | pax -v
>Release-Note:
>Audit-Trail:
>Unformatted:
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