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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=6634 Old BSD style tar file format not supported by <untar> task Summary: Old BSD style tar file format not supported by <untar> task Product: Ant Version: 1.4.1 Platform: All OS/Version: All Status: NEW Severity: Major Priority: Other Component: Core tasks AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Tar archives that are encoded using the original BSD format, rather than the newer POSIX format, are not properly supported by the Ant <untar> task because they lack the "ustar" magic header. Here is a test script to demonstrate the problem: <project default="test.untar" basedir="test"> <target name="test.untar"> <get src="http://www.sleepycat.com/update/4.0.14/db-4.0.14.tar.gz"; dest="db-4.0.14.tar.gz"/> <gunzip src="db-4.0.14.tar.gz"/> <untar src="db-4.0.14.tar" dest="."/> </target> </project> I originally contacted Sleepycat Software to get them to change their tarball rolling program, but they told me this is desired behaviour from their point of view: > We're deliberately using the "original" tar archive format, as > distributed with the BSD software releases. The problem with > defaulting to the ustar format is that tar binaries on older > systems may not be able to read our release archives. In case you think that this is some strange, otherwise unsupported format, they also said this: > I know that the standard tar and pax > commands distributed with the major vendors can all read old > tar formats, it surprises me that Ant can't. The GNU project apparently agrees that this is correct behaviour even though they don't seem to follow it much. Consider this from http://www.gnu.org/manual/tar/html_mono/tar.html#SEC111: > On the other hand, most modern tars are > able to read old format archives, so it might be safer for > you to always use --old-archive (-o) for your distributions. The GNU tar manual gives more details about compatibility issues between the two in the sections which follow. -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
