forked from mirrors/nixpkgs
Merge pull request #84032 from teto/fix_kernel_merge
Fix kernel configuration merge
This commit is contained in:
Florian Klink
GitHub
commit
cfb4d0dfe3
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@ -8,10 +8,10 @@ with lib;
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option = x:
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x // { optional = true; };
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yes = { tristate = "y"; };
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no = { tristate = "n"; };
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module = { tristate = "m"; };
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freeform = x: { freeform = x; };
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yes = { tristate = "y"; optional = false; };
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no = { tristate = "n"; optional = false; };
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module = { tristate = "m"; optional = false; };
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freeform = x: { freeform = x; optional = false; };
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/*
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Common patterns/legacy used in common-config/hardened/config.nix
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@ -22,7 +22,7 @@ let
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mergeFalseByDefault = locs: defs:
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if defs == [] then abort "This case should never happen."
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else if any (x: x == false) defs then false
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else if any (x: x == false) (getValues defs) then false
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else true;
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kernelItem = types.submodule {
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@ -55,6 +55,7 @@ let
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default = false;
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description = ''
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Wether option should generate a failure when unused.
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Upon merging values, mandatory wins over optional.
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'';
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};
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};
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@ -121,7 +122,7 @@ in
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type = types.attrsOf kernelItem;
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example = literalExample '' with lib.kernel; {
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"9P_NET" = yes;
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USB = optional yes;
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USB = option yes;
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MMC_BLOCK_MINORS = freeform "32";
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}'';
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description = ''
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@ -42,7 +42,7 @@ let
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TIMER_STATS = whenOlder "4.11" yes;
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DEBUG_NX_TEST = whenOlder "4.11" no;
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DEBUG_STACK_USAGE = no;
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DEBUG_STACKOVERFLOW = mkIf (!features.grsecurity) no;
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DEBUG_STACKOVERFLOW = mkIf (!features.grsecurity) (option no);
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RCU_TORTURE_TEST = no;
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SCHEDSTATS = no;
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DETECT_HUNG_TASK = yes;
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@ -184,7 +184,6 @@ let
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# needed for ss
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INET_DIAG = yes;
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INET_TCP_DIAG = module;
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INET_UDP_DIAG = module;
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INET_RAW_DIAG = whenAtLeast "4.14" module;
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INET_DIAG_DESTROY = whenAtLeast "4.9" yes;
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@ -365,7 +364,7 @@ let
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CIFS_STATS = whenOlder "4.19" yes;
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CIFS_WEAK_PW_HASH = yes;
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CIFS_UPCALL = yes;
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CIFS_ACL = yes;
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CIFS_ACL = option yes;
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CIFS_DFS_UPCALL = yes;
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CIFS_SMB2 = whenOlder "4.13" yes;
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@ -396,7 +395,7 @@ let
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DEBUG_SET_MODULE_RONX = { optional = true; tristate = whenOlder "4.11" "y"; };
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RANDOMIZE_BASE = option yes;
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STRICT_DEVMEM = option yes; # Filter access to /dev/mem
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SECURITY_SELINUX_BOOTPARAM_VALUE = freeform "0"; # Disable SELinux by default
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SECURITY_SELINUX_BOOTPARAM_VALUE = option (freeform "0"); # Disable SELinux by default
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# Prevent processes from ptracing non-children processes
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SECURITY_YAMA = option yes;
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DEVKMEM = mkIf (!features.grsecurity) no; # Disable /dev/kmem
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@ -709,7 +708,7 @@ let
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KEXEC_JUMP = option yes;
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# Windows Logical Disk Manager (Dynamic Disk) support
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LDM_PARTITION = yes;
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LDM_PARTITION = option yes;
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LOGIRUMBLEPAD2_FF = yes; # Logitech Rumblepad 2 force feedback
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LOGO = no; # not needed
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MEDIA_ATTACH = yes;
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@ -158,11 +158,8 @@ let
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;
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}).config;
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#
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structuredConfig = moduleStructuredConfig.settings;
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};
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}; # end of configfile derivation
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kernel = (callPackage ./manual-config.nix {}) {
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@ -1,53 +1,79 @@
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# to run these tests:
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# nix-instantiate --eval --strict . -A tests.kernel-config
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#
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# make sure to use NON EXISTING kernel settings else they may conflict with
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# common-config.nix
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{ lib, pkgs }:
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with lib.kernel;
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with lib.asserts;
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with lib.modules;
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with lib;
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with kernel;
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# To test nixos/modules/system/boot/kernel_config.nix;
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let
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# copied from release-lib.nix
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assertTrue = bool:
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if bool
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then pkgs.runCommand "evaluated-to-true" {} "touch $out"
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else pkgs.runCommand "evaluated-to-false" {} "false";
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lts_kernel = pkgs.linuxPackages.kernel;
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kernelTestConfig = structuredConfig: (lts_kernel.override {
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# to see the result once the module transformed the lose structured config
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getConfig = structuredConfig:
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(lts_kernel.override {
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structuredExtraConfig = structuredConfig;
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}).configfile.structuredConfig;
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mandatoryVsOptionalConfig = mkMerge [
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{ USB_DEBUG = option yes;}
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{ USB_DEBUG = yes;}
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{ NIXOS_FAKE_USB_DEBUG = yes;}
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{ NIXOS_FAKE_USB_DEBUG = option yes; }
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];
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freeformConfig = mkMerge [
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{ MMC_BLOCK_MINORS = freeform "32"; } # same as default, won't trigger any error
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{ MMC_BLOCK_MINORS = freeform "64"; } # will trigger an error but the message is not great:
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{ NIXOS_FAKE_MMC_BLOCK_MINORS = freeform "32"; } # same as default, won't trigger any error
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{ NIXOS_FAKE_MMC_BLOCK_MINORS = freeform "64"; } # will trigger an error but the message is not great:
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];
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yesWinsOverNoConfig = mkMerge [
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# default for "8139TOO_PIO" is no
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{ "8139TOO_PIO" = yes; } # yes wins over no by default
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{ "8139TOO_PIO" = no; }
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# default for "NIXOS_TEST_BOOLEAN" is no
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{ "NIXOS_TEST_BOOLEAN" = yes; } # yes wins over no by default
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{ "NIXOS_TEST_BOOLEAN" = no; }
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];
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optionalNoWins = mkMerge [
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{ NIXOS_FAKE_USB_DEBUG = option yes;}
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{ NIXOS_FAKE_USB_DEBUG = yes;}
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];
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allOptionalRemainOptional = mkMerge [
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{ NIXOS_FAKE_USB_DEBUG = option yes;}
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{ NIXOS_FAKE_USB_DEBUG = option yes;}
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];
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in
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{
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runTests {
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testEasy = {
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expr = (getConfig { NIXOS_FAKE_USB_DEBUG = yes;}).NIXOS_FAKE_USB_DEBUG;
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expected = { tristate = "y"; optional = false; freeform = null; };
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};
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# mandatory flag should win over optional
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mandatoryCheck = (kernelTestConfig mandatoryVsOptionalConfig);
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testMandatoryCheck = {
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expr = (getConfig mandatoryVsOptionalConfig).NIXOS_FAKE_USB_DEBUG.optional;
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expected = false;
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};
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testYesWinsOverNo = {
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expr = (getConfig yesWinsOverNoConfig)."NIXOS_TEST_BOOLEAN".tristate;
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expected = "y";
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};
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testAllOptionalRemainOptional = {
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expr = (getConfig allOptionalRemainOptional)."NIXOS_FAKE_USB_DEBUG".optional;
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expected = true;
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};
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# check that freeform options are unique
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# Should trigger
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# > The option `settings.MMC_BLOCK_MINORS.freeform' has conflicting definitions, in `<unknown-file>' and `<unknown-file>'
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freeformCheck = let
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res = builtins.tryEval ( (kernelTestConfig freeformConfig).MMC_BLOCK_MINORS.freeform);
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in
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assertTrue (res.success == false);
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# > The option `settings.NIXOS_FAKE_MMC_BLOCK_MINORS.freeform' has conflicting definitions, in `<unknown-file>' and `<unknown-file>'
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testTreeform = let
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res = builtins.tryEval ( (getConfig freeformConfig).NIXOS_FAKE_MMC_BLOCK_MINORS.freeform);
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in {
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expr = res.success;
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expected = false;
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};
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yesVsNoCheck = let
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res = kernelTestConfig yesWinsOverNoConfig;
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in
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assertTrue (res."8139TOO_PIO".tristate == "y");
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}
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