13797ff522
extraMeta was being fed as passthru without being processed by stdenv, so without those changes, adding the security attribute would be useless.
144 lines
4.2 KiB
Nix
144 lines
4.2 KiB
Nix
{ stdenv, perl, buildLinux
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, # The kernel source tarball.
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src
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, # The kernel version.
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version
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, # Overrides to the kernel config.
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extraConfig ? ""
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, # The version number used for the module directory
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modDirVersion ? version
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, # An attribute set whose attributes express the availability of
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# certain features in this kernel. E.g. `{iwlwifi = true;}'
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# indicates a kernel that provides Intel wireless support. Used in
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# NixOS to implement kernel-specific behaviour.
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features ? {}
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, # A list of patches to apply to the kernel. Each element of this list
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# should be an attribute set {name, patch} where `name' is a
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# symbolic name and `patch' is the actual patch. The patch may
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# optionally be compressed with gzip or bzip2.
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kernelPatches ? []
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, ignoreConfigErrors ? stdenv.platform.name != "pc"
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, extraMeta ? {}
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, hostPlatform
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, ...
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}:
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assert stdenv.isLinux;
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let
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lib = stdenv.lib;
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# Combine the `features' attribute sets of all the kernel patches.
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kernelFeatures = lib.fold (x: y: (x.features or {}) // y) ({
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iwlwifi = true;
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efiBootStub = true;
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needsCifsUtils = true;
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netfilterRPFilter = true;
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} // features) kernelPatches;
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configWithPlatform = kernelPlatform: import ./common-config.nix {
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inherit stdenv version kernelPlatform extraConfig;
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features = kernelFeatures; # Ensure we know of all extra patches, etc.
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};
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config = configWithPlatform stdenv.platform;
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configCross = configWithPlatform hostPlatform.platform;
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kernelConfigFun = baseConfig:
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let
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configFromPatches =
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map ({extraConfig ? "", ...}: extraConfig) kernelPatches;
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in lib.concatStringsSep "\n" ([baseConfig] ++ configFromPatches);
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configfile = stdenv.mkDerivation {
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inherit ignoreConfigErrors;
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name = "linux-config-${version}";
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generateConfig = ./generate-config.pl;
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kernelConfig = kernelConfigFun config;
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nativeBuildInputs = [ perl ];
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platformName = stdenv.platform.name;
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kernelBaseConfig = stdenv.platform.kernelBaseConfig;
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kernelTarget = stdenv.platform.kernelTarget;
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autoModules = stdenv.platform.kernelAutoModules;
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preferBuiltin = stdenv.platform.kernelPreferBuiltin or false;
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arch = stdenv.platform.kernelArch;
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crossAttrs = let
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cp = hostPlatform.platform;
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in {
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arch = cp.kernelArch;
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platformName = cp.name;
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kernelBaseConfig = cp.kernelBaseConfig;
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kernelTarget = cp.kernelTarget;
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autoModules = cp.kernelAutoModules;
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# Just ignore all options that don't apply (We are lazy).
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ignoreConfigErrors = true;
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kernelConfig = kernelConfigFun configCross;
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inherit (kernel.crossDrv) src patches preUnpack;
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};
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prePatch = kernel.prePatch + ''
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# Patch kconfig to print "###" after every question so that
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# generate-config.pl from the generic builder can answer them.
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sed -e '/fflush(stdout);/i\printf("###");' -i scripts/kconfig/conf.c
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'';
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inherit (kernel) src patches preUnpack;
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buildPhase = ''
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cd $buildRoot
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# Get a basic config file for later refinement with $generateConfig.
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make -C ../$sourceRoot O=$PWD $kernelBaseConfig ARCH=$arch
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# Create the config file.
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echo "generating kernel configuration..."
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echo "$kernelConfig" > kernel-config
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DEBUG=1 ARCH=$arch KERNEL_CONFIG=kernel-config AUTO_MODULES=$autoModules \
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PREFER_BUILTIN=$preferBuiltin SRC=../$sourceRoot perl -w $generateConfig
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'';
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installPhase = "mv .config $out";
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enableParallelBuilding = true;
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};
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kernel = buildLinux {
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inherit version modDirVersion src kernelPatches stdenv extraMeta;
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configfile = configfile.nativeDrv or configfile;
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crossConfigfile = configfile.crossDrv or configfile;
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config = { CONFIG_MODULES = "y"; CONFIG_FW_LOADER = "m"; };
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crossConfig = { CONFIG_MODULES = "y"; CONFIG_FW_LOADER = "m"; };
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};
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passthru = {
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features = kernelFeatures;
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passthru = kernel.passthru // (removeAttrs passthru [ "passthru" ]);
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};
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nativeDrv = lib.addPassthru kernel.nativeDrv passthru;
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crossDrv = lib.addPassthru kernel.crossDrv passthru;
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in if kernel ? crossDrv
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then nativeDrv // { inherit nativeDrv crossDrv; }
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else lib.addPassthru kernel passthru
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