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{
stdenv,
lib,
python3,
kernel,
makeWrapper,
writeText,
gawk,
iproute2,
}:
let
libexec = "libexec/hypervkvpd";
fcopy_name =
if lib.versionOlder kernel.version "6.10" then
"fcopy"
else
# The fcopy program is explicitly left out in the Makefile on aarch64
(if stdenv.hostPlatform.isAarch64 then null else "fcopy_uio");
daemons = stdenv.mkDerivation {
pname = "hyperv-daemons-bin";
inherit (kernel) src version;
nativeBuildInputs = [ makeWrapper ];
buildInputs = [ python3 ];
postPatch = ''
cd tools/hv
substituteInPlace hv_kvp_daemon.c \
--replace /usr/libexec/hypervkvpd/ $out/${libexec}/
'';
makeFlags = [
"ARCH=${stdenv.hostPlatform.parsed.cpu.name}"
"DESTDIR=$(out)"
"sbindir=/bin"
"libexecdir=/libexec"
];
postFixup = ''
wrapProgram $out/bin/hv_kvp_daemon \
--prefix PATH : $out/bin:${
lib.makeBinPath [
gawk
iproute2
]
}
'';
};
service =
bin: title: check:
writeText "hv-${bin}.service" ''
[Unit]
Description=Hyper-V ${title} daemon
ConditionVirtualization=microsoft
${lib.optionalString (check != "") ''
ConditionPathExists=/dev/vmbus/${check}
''}
[Service]
ExecStart=@out@/hv_${bin}_daemon -n
Restart=on-failure
PrivateTmp=true
Slice=hyperv.slice
[Install]
WantedBy=hyperv-daemons.target
'';
in
stdenv.mkDerivation {
pname = "hyperv-daemons";
inherit (kernel) version;
# we just stick the bins into out as well as it requires "out"
outputs = [
"bin"
"lib"
"out"
];
buildInputs = [ daemons ];
passthru = {
inherit daemons;
};
buildCommand = ''
system=$lib/lib/systemd/system
${lib.optionalString (fcopy_name != null) ''
install -Dm444 ${
service fcopy_name "file copy (FCOPY)"
"/sys/bus/vmbus/devices/eb765408-105f-49b6-b4aa-c123b64d17d4/uio"
} $system/hv-fcopy.service
''}
install -Dm444 ${service "kvp" "key-value pair (KVP)" "hv_kvp"} $system/hv-kvp.service
install -Dm444 ${service "vss" "volume shadow copy (VSS)" "hv_vss"} $system/hv-vss.service
cat > $system/hyperv-daemons.target <<EOF
[Unit]
Description=Hyper-V Daemons
Wants=hv-kvp.service hv-vss.service
${lib.optionalString (fcopy_name != null) ''
Wants=hv-fcopy.service
''}
EOF
for f in $lib/lib/systemd/system/*.service ; do
substituteInPlace $f --replace @out@ ${daemons}/bin
done
# we need to do both $out and $bin as $out is required
for d in $out/bin $bin/bin ; do
# make user binaries available
mkdir -p $d
ln -s ${daemons}/bin/lsvmbus $d/lsvmbus
done
'';
meta = {
description = "Integration Services for running NixOS under HyperV";
mainProgram = "lsvmbus";
longDescription = ''
This packages contains the daemons that are used by the Hyper-V hypervisor
on the host.
Microsoft calls their guest agents "Integration Services" which is why
we use that name here.
'';
homepage = "https://kernel.org";
maintainers = with lib.maintainers; [ peterhoeg ];
platforms = kernel.meta.platforms;
};
}
|
