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{ lib, stdenv, fetchFromGitHub, bc, python3, bison, flex, fuse, libarchive
, buildPackages
, firewallSupport ? false
}:
stdenv.mkDerivation rec {
pname = "lkl";
version = "2023-01-27";
outputs = [ "dev" "lib" "out" ];
src = fetchFromGitHub {
owner = "lkl";
repo = "linux";
rev = "b00f0fbcd5ae24636a9315fea3af32f411cf93be";
sha256 = "sha256-GZpnTVdcnS5uAUHsVre539+0Qlv36Fui0WGjOPwvWrE=";
};
nativeBuildInputs = [ bc bison flex python3 ];
buildInputs = [ fuse libarchive ];
postPatch = ''
# Fix a /usr/bin/env reference in here that breaks sandboxed builds
patchShebangs arch/lkl/scripts
patchShebangs scripts/ld-version.sh
# Fixup build with newer Linux headers: https://github.com/lkl/linux/pull/484
sed '1i#include <linux/sockios.h>' -i tools/lkl/lib/hijack/xlate.c
'' + lib.optionalString firewallSupport ''
cat ${./lkl-defconfig-enable-nftables} >> arch/lkl/configs/defconfig
'';
installPhase = ''
mkdir -p $out/bin $lib/lib $dev
cp tools/lkl/bin/lkl-hijack.sh $out/bin
sed -i $out/bin/lkl-hijack.sh \
-e "s,LD_LIBRARY_PATH=.*,LD_LIBRARY_PATH=$lib/lib,"
cp tools/lkl/{cptofs,fs2tar,lklfuse} $out/bin
ln -s cptofs $out/bin/cpfromfs
cp -r tools/lkl/include $dev/
cp tools/lkl/liblkl.a \
tools/lkl/lib/liblkl.so \
tools/lkl/lib/hijack/liblkl-hijack.so $lib/lib
'';
# We turn off format and fortify because of these errors (fortify implies -O2, which breaks the jitter entropy code):
# fs/xfs/xfs_log_recover.c:2575:3: error: format not a string literal and no format arguments [-Werror=format-security]
# crypto/jitterentropy.c:54:3: error: #error "The CPU Jitter random number generator must not be compiled with optimizations. See documentation. Use the compiler switch -O0 for compiling jitterentropy.c."
hardeningDisable = [ "format" "fortify" ];
makeFlags = [
"-C tools/lkl"
"CC=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc"
"HOSTCC=${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}cc"
"CROSS_COMPILE=${stdenv.cc.targetPrefix}"
];
enableParallelBuilding = true;
meta = with lib; {
description = "The Linux kernel as a library";
longDescription = ''
LKL (Linux Kernel Library) aims to allow reusing the Linux kernel code as
extensively as possible with minimal effort and reduced maintenance
overhead
'';
homepage = "https://github.com/lkl/linux/";
platforms = platforms.linux; # Darwin probably works too but I haven't tested it
license = licenses.gpl2;
maintainers = with maintainers; [ copumpkin ];
};
}
|