698bf970e1
Support for python3 was added in 8a99c92009
it is therefore supported in every kernel including and after 4.19
111 lines
3.2 KiB
Nix
111 lines
3.2 KiB
Nix
{ stdenv, lib, python2, python3, kernel, makeWrapper, writeText
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, gawk, iproute2 }:
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let
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libexec = "libexec/hypervkvpd";
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daemons = stdenv.mkDerivation rec {
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pname = "hyperv-daemons-bin";
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inherit (kernel) src version;
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nativeBuildInputs = [ makeWrapper ];
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buildInputs = [ (if lib.versionOlder version "4.19" then python2 else python3) ];
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# as of 4.9 compilation will fail due to -Werror=format-security
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hardeningDisable = [ "format" ];
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postPatch = ''
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cd tools/hv
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substituteInPlace hv_kvp_daemon.c \
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--replace /usr/libexec/hypervkvpd/ $out/${libexec}/
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'';
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# We don't actually need the hv_get_{dhcp,dns}_info scripts on NixOS in
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# their current incarnation but with them in place, we stop the spam of
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# errors in the log.
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installPhase = ''
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runHook preInstall
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for f in fcopy kvp vss ; do
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install -Dm755 hv_''${f}_daemon -t $out/bin
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done
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install -Dm755 lsvmbus $out/bin/lsvmbus
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install -Dm755 hv_get_dhcp_info.sh $out/${libexec}/hv_get_dhcp_info
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install -Dm755 hv_get_dns_info.sh $out/${libexec}/hv_get_dns_info
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runHook postInstall
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'';
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postFixup = ''
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wrapProgram $out/bin/hv_kvp_daemon \
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--prefix PATH : $out/bin:${lib.makeBinPath [ gawk iproute2 ]}
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'';
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};
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service = bin: title: check:
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writeText "hv-${bin}.service" ''
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[Unit]
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Description=Hyper-V ${title} daemon
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ConditionVirtualization=microsoft
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${lib.optionalString (check != "") ''
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ConditionPathExists=/dev/vmbus/${check}
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''}
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[Service]
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ExecStart=@out@/hv_${bin}_daemon -n
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Restart=on-failure
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PrivateTmp=true
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Slice=hyperv.slice
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[Install]
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WantedBy=hyperv-daemons.target
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'';
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in stdenv.mkDerivation {
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pname = "hyperv-daemons";
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inherit (kernel) version;
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# we just stick the bins into out as well as it requires "out"
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outputs = [ "bin" "lib" "out" ];
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buildInputs = [ daemons ];
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buildCommand = ''
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system=$lib/lib/systemd/system
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install -Dm444 ${service "fcopy" "file copy (FCOPY)" "hv_fcopy" } $system/hv-fcopy.service
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install -Dm444 ${service "kvp" "key-value pair (KVP)" "" } $system/hv-kvp.service
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install -Dm444 ${service "vss" "volume shadow copy (VSS)" "" } $system/hv-vss.service
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cat > $system/hyperv-daemons.target <<EOF
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[Unit]
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Description=Hyper-V Daemons
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Wants=hv-fcopy.service hv-kvp.service hv-vss.service
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EOF
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for f in $lib/lib/systemd/system/*.service ; do
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substituteInPlace $f --replace @out@ ${daemons}/bin
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done
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# we need to do both $out and $bin as $out is required
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for d in $out/bin $bin/bin ; do
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# make user binaries available
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mkdir -p $d
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ln -s ${daemons}/bin/lsvmbus $d/lsvmbus
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done
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'';
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meta = with lib; {
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description = "Integration Services for running NixOS under HyperV";
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longDescription = ''
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This packages contains the daemons that are used by the Hyper-V hypervisor
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on the host.
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Microsoft calls their guest agents "Integration Services" which is why
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we use that name here.
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'';
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homepage = "https://kernel.org";
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maintainers = with maintainers; [ peterhoeg ];
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platforms = kernel.meta.platforms;
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};
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}
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