From: Peter Korsgaard <peter@korsgaard.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH v3] fs/tar: explicitly set extended header values to ensure binary reproducibility
Date: Wed, 31 Jul 2019 23:54:23 +0200 [thread overview]
Message-ID: <87imrh98fk.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <20190706065501.3959-1-itsatharva@gmail.com> (Atharva Lele's message of "Sat, 6 Jul 2019 12:25:01 +0530")
>>>>> "Atharva" == Atharva Lele <itsatharva@gmail.com> writes:
> Since we use --xattrs-include='*' to include all extended attributes,
> tar creates a PAX formatted archive. The archive metadata captures atime
> and ctime of files. To fix this, GNU recommends that we pass this added
> argument to tar to create binary reproducible packages. Setting of mtime
> is handled in fs/common.mk using touch on all files.
> Diffoscope output pre-change: https://gitlab.com/snippets/1871111
> Diffoscope output after change is blank i.e. binary reproducibile rootfs
> is created.
> GNU Recommendation: https://www.gnu.org/software/tar/manual/tar.html#SEC147
> Signed-off-by: Atharva Lele <itsatharva@gmail.com>
> Reviewed-by: Matt Weber <matthew.weber@rockwellcollins.com>
Committed to 2019.02.x and 2019.05.x, thanks.
--
Bye, Peter Korsgaard
prev parent reply other threads:[~2019-07-31 21:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-06 6:55 [Buildroot] [PATCH v3] fs/tar: explicitly set extended header values to ensure binary reproducibility Atharva Lele
2019-07-14 10:21 ` Peter Korsgaard
2019-07-31 21:54 ` Peter Korsgaard [this message]
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