Package: pristine-tar Version: 1.38 Severity: normal I have a use case that occurs on a filesystem where jdupes is used periodically to hardlink together duplicate files. The tree which tarballs will be used from contains such duplicates that may be hardlinked either before or after the delta is generated. GNU tar, by default, inserts special "link to" records for a the second and subsequent occurence of a reference to the same inode number. That such files may be hardlinked post-delta generation would cause the generated tarball to be unpredictable and therefore quite possibly broken.
I believe the very simple fix would be to add --hard-dereference to the list of tar options in recreatetarball_helper. In the case that hard links were present in the tarball, xdelta ought to simply remove the extra data and no harm would be done. Thanks, John -- System Information: Debian Release: 9.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-8-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages pristine-tar depends on: ii libbz2-1.0 1.0.6-8.1 ii libc6 2.24-11+deb9u3 ii perl 5.24.1-3+deb9u4 ii tar 1.29b-1.1 ii xdelta 1.1.3-9.1+b1 ii xdelta3 3.0.11-dfsg-1+b1 ii zlib1g 1:1.2.8.dfsg-5 Versions of packages pristine-tar recommends: ii bzip2 1.0.6-8.1 ii pbzip2 1.1.9-1+b1 ii xz-utils 5.2.2-1.2+b1 pristine-tar suggests no packages. -- no debconf information
