Tar will automatically record the user/group ID and name for
files/directories. This reduces the reproducibility of the sysupgrade.tar
because most of the people don't use the same username as the OpenWrt
buildserver.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
The file ordering in the current sysupgrade depends on the order of file in
a filesystem. This is often already in a sane (alphabetical order) but this
is not always the case. For example, the OpenWrt build servers return a
different ordering.
This breaks the reproducibility of the sysupgrade tarballs significantly
and also resulted in images which cannot be used for upgrades on devices
like the OpenMesh A42/A62.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Now that the "sysupgrade-nand" step is used by non-NAND targets as well,
rename it to "sysupgrade-tar" to make it more generic.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
The --mtime argument to 'tar' sets the modification time for all files within
the archive, which determines the timestamp files will get when they are
extracted. In this case, rootfs and other tarballs will get mtimes which
correspond to the last commit timestamp of the build system, as reported by
git/subversion.
This is a step towards reproducible image builds.
Signed-off-by: bryan newbold <bnewbold@robocracy.org>
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48586
Sven Eckelmann