liminix/pkgs/kernel-backport/default.nix

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{ stdenv
, git
, python2
, which
, fetchgit
, fetchpatch
, fetchFromGitHub
, autoreconfHook
, coccinelle
}:
let
donorTree = fetchFromGitHub {
owner = "torvalds";
repo = "linux";
rev = "e2c1a934fd8e4288e7a32f4088ceaccf469eb74c"; # 5.15.94
hash= "sha256-Jg3EgL86CseuzYMAlUG3CDWPCo8glMSIZs10l7EuhWI=";
};
backports = stdenv.mkDerivation {
name = "linux-backports";
version = "dfe0f60ca8a";
nativeBuildInputs = [ python2 ];
src = fetchgit {
url = "https://git.kernel.org/pub/scm/linux/kernel/git/backports/backports.git";
name = "backports";
rev = "dfe0f60ca8a1065e63b4db703b3bd2708ee23a0e";
hash = "sha256-V+unO0rCom+TZS7WuaXFrb3C1EBImmflCPuOoP+LvBY=";
};
buildPhase = ''
patchShebangs .
'';
installPhase = ''
mkdir -p $out
cp -a . $out
rm $out/patches/0073-netdevice-mtu-range.cocci
# fq.patch is obsoleted by kernel commit 48a54f6bc45 and no longer
# applies
# rm $out/patches/0091-fq-no-siphash_key_t/fq.patch
# don't know why this doesn't apply but it's only important for
# compiling against linux < 4.1
# rm $out/patches/0058-ptp_getsettime64/ptp_getsettime64.cocci
'';
patches = [
# (fetchpatch {
# url = "https://github.com/telent/nixwrt/blob/28ff2559e811c740b0a2922f52291b335804857b/nixwrt/kernel/gentree-writable-outputs.patch";
# hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
# })#
./gentree-writable-outputs.patch
# ./update-usb-sg-backport-patch.patch
# ./backport_kfree_sensitive.patch
];
};
in stdenv.mkDerivation rec {
inherit donorTree;
KERNEL_VERSION = builtins.substring 0 11 donorTree.rev;
BACKPORTS_VERSION = backports.version;
name = "backported-kernel-${KERNEL_VERSION}-${BACKPORTS_VERSION}";
# gentree uses "which" at runtime to test for the presence of git,
# and I don't have the patience to patch it out. There is no other
# reason we need either of them as build inputs.
depsBuildBuild = [ coccinelle ];
nativeBuildInputs = [ which git python2 ];
phases = [
"backportFromFuture" "installPhase"
];
backportFromFuture = ''
echo $KERNEL_VERSION $BACKPORTS_VERSION
WORK=`pwd`/build
mkdir -p $WORK
cat ${backports}/copy-list > copy-list
echo 'include/linux/key.h' >> copy-list
python ${backports}/gentree.py --verbose --clean --copy-list copy-list ${donorTree} $WORK
'';
installPhase = ''
cp -a ./build/ $out
'';
}