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| author | Alexander Kjeldaas <ak@formalprivacy.com> | 2013-08-16 02:42:11 +0200 |
|---|---|---|
| committer | Alexander Kjeldaas <ak@formalprivacy.com> | 2014-04-05 08:41:06 +0200 |
| commit | f67015cae49400eba539b9ec8b9920643581c77c (patch) | |
| tree | ffa1848edddba80941d5248f2c865a8a01e76b69 /pkgs/build-support/kernel | |
| parent | c69eb7c2c1d996ae07725ae9763a7484c2afb449 (diff) | |
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Make initrd and the kernel builds repeatable.
Diffstat (limited to 'pkgs/build-support/kernel')
| -rw-r--r-- | pkgs/build-support/kernel/cpio-clean.pl | 20 | ||||
| -rw-r--r-- | pkgs/build-support/kernel/make-initrd.nix | 5 | ||||
| -rw-r--r-- | pkgs/build-support/kernel/make-initrd.sh | 2 |
3 files changed, 24 insertions, 3 deletions
diff --git a/pkgs/build-support/kernel/cpio-clean.pl b/pkgs/build-support/kernel/cpio-clean.pl new file mode 100644 index 000000000000..de38dee49f0d --- /dev/null +++ b/pkgs/build-support/kernel/cpio-clean.pl @@ -0,0 +1,20 @@ +use strict; + +# Make inode number, link info and mtime consistent in order to get a consistent hash. +# +# Author: Alexander Kjeldaas <ak@formalprivacy.com> + +use Archive::Cpio; + +my $cpio = Archive::Cpio->new; +my $IN = \*STDIN; +my $ino = 1; +$cpio->read_with_handler($IN, sub { + my ($e) = @_; + $e->{inode} = $ino; + $ino++; + $e->{nlink} = 1; + $e->{mtime} = 1; + $cpio->write_one(\*STDOUT, $e); + }); +$cpio->write_trailer(\*STDOUT); diff --git a/pkgs/build-support/kernel/make-initrd.nix b/pkgs/build-support/kernel/make-initrd.nix index 4ddf0706e03e..0582ca553012 100644 --- a/pkgs/build-support/kernel/make-initrd.nix +++ b/pkgs/build-support/kernel/make-initrd.nix @@ -12,10 +12,10 @@ # `contents = {object = ...; symlink = /init;}' is a typical # argument. -{stdenv, perl, cpio, contents, ubootChooser, compressor}: +{stdenv, perl, perlArchiveCpio, cpio, contents, ubootChooser, compressor}: let - inputsFun = ubootName : [perl cpio] + inputsFun = ubootName : [perl cpio perlArchiveCpio ] ++ stdenv.lib.optional (ubootName != null) [ (ubootChooser ubootName) ]; makeUInitrdFun = ubootName : (ubootName != null); in @@ -35,6 +35,7 @@ stdenv.mkDerivation { exportReferencesGraph = map (x: [("closure-" + baseNameOf x.symlink) x.object]) contents; pathsFromGraph = ./paths-from-graph.pl; + cpioClean = ./cpio-clean.pl; crossAttrs = { nativeBuildInputs = inputsFun stdenv.cross.platform.uboot; diff --git a/pkgs/build-support/kernel/make-initrd.sh b/pkgs/build-support/kernel/make-initrd.sh index f6cadaf02819..17b261f98407 100644 --- a/pkgs/build-support/kernel/make-initrd.sh +++ b/pkgs/build-support/kernel/make-initrd.sh @@ -36,7 +36,7 @@ storePaths=$(perl $pathsFromGraph closure-*) # Put the closure in a gzipped cpio archive. mkdir -p $out -(cd root && find * -print0 | cpio -o -H newc --null | $compressor > $out/initrd) +(cd root && find * -print0 | cpio -o -H newc --null | perl $cpioClean | $compressor > $out/initrd) if [ -n "$makeUInitrd" ]; then mv $out/initrd $out/initrd.gz |