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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| # This file includes fragments of <nixpkgs/nixos/modules/system/boot/kernel_config.nix> | ||
| { lib | ||
| , path | ||
| , modules ? [] | ||
| , structuredConfig | ||
| , version | ||
| }: rec { | ||
| module = import (path + "/nixos/modules/system/boot/kernel_config.nix"); | ||
| config = (lib.evalModules { | ||
| modules = [ | ||
| module | ||
| ( | ||
| # | ||
| # This module adds kernel config file generation from the structured attributes. | ||
| # | ||
| { config, lib, ... }: | ||
|
|
||
| let | ||
| mkValue = with lib; val: | ||
| let | ||
| isNumber = c: elem c ["0" "1" "2" "3" "4" "5" "6" "7" "8" "9"]; | ||
| in | ||
| if (val == "") then "\"\"" | ||
| else if val == "y" || val == "m" || val == "n" then val | ||
| else if all isNumber (stringToCharacters val) then val | ||
| else if substring 0 2 val == "0x" then val | ||
| else val # FIXME: fix quoting one day | ||
| ; | ||
|
|
||
| mkConfigLine = key: item: | ||
| let | ||
| val = if item.freeform != null then item.freeform else item.tristate; | ||
| in | ||
| if val == null then "# CONFIG_${key} is not set" else | ||
| # TODO: Handle optional here?? | ||
| # This could only work if we are given the kernel version to work from. | ||
| if (item.optional) | ||
| then "CONFIG_${key}=${mkValue val}" | ||
| else "CONFIG_${key}=${mkValue val}" | ||
| ; | ||
|
|
||
| mkConf = cfg: lib.concatStringsSep "\n" (lib.mapAttrsToList mkConfigLine cfg); | ||
| configfile = mkConf config.settings; | ||
|
|
||
| validatorSnippet = '' | ||
| ( | ||
| echo | ||
| echo ":: Validating kernel configuration" | ||
| echo | ||
| error=0 | ||
| warn=0 | ||
| if [ ! -e .config ]; then | ||
| echo ".config is not present in \$PWD ($PWD)" | ||
| echo "Aborting..." | ||
| exit 2 | ||
| fi | ||
| ${lib.concatMapStringsSep "\n" ({key, item}: | ||
| let | ||
| line = lib.escapeShellArg (mkConfigLine key item); | ||
| escapedLinePattern = lib.replaceChars ["[" "]" ''\''] [ ''\['' ''\]'' ''\\''] line; | ||
| lineNotSet = "# CONFIG_${key} is not set"; | ||
| linePattern = "^CONFIG_${key}="; | ||
| presencePattern = "CONFIG_${key}[ =]"; | ||
| in | ||
| '' | ||
| if [[ ${line} == *" is not set" ]]; then | ||
| # An absent unset value is *totally fine*. | ||
| if ( | ||
| # Present | ||
| (grep '${presencePattern}' .config) && | ||
| # And not unset | ||
| ! (grep '^${lineNotSet}$' .config) | ||
| ) > /dev/null; then | ||
| ${if item.optional then '' | ||
| ((++warn)) | ||
| echo -n "Warning: " | ||
| '' else '' | ||
| ((++error)) | ||
| echo -n "ERROR: " | ||
| ''} | ||
| value=$(grep 'CONFIG_${key}[= ]' .config || :) | ||
| echo "CONFIG_${key} should be left «is not set»... set to: «$value»." | ||
| fi | ||
| elif [[ ${line} == *=n ]]; then | ||
| # An absent `=n` value is *totally fine*. | ||
| if ( | ||
| # Present | ||
| (grep '${presencePattern}' .config) && | ||
| # And neither unset or set to the value | ||
| ! (grep '^'${escapedLinePattern}'$' .config || grep '^${lineNotSet}$' .config) | ||
| ) > /dev/null; then | ||
| ${if item.optional then '' | ||
| ((++warn)) | ||
| echo -n "Warning: " | ||
| '' else '' | ||
| ((++error)) | ||
| echo -n "ERROR: " | ||
| ''} | ||
| value=$(grep '${presencePattern}' .config || :) | ||
| echo "CONFIG_${key} not set to «"${line}"»... set to: «$value»." | ||
| fi | ||
| else | ||
| if ! grep '^'${escapedLinePattern}'$' .config > /dev/null; then | ||
| ${if item.optional then '' | ||
| ((++warn)) | ||
| echo -n "Warning: " | ||
| '' else '' | ||
| ((++error)) | ||
| echo -n "ERROR: " | ||
| ''} | ||
| value=$(grep 'CONFIG_${key}[= ]' .config || :) | ||
| if [[ -z "$value" ]]; then | ||
| echo "CONFIG_${key} is expected to be set to «"${line}"», but is not present in config file." | ||
| else | ||
| echo "CONFIG_${key} not set to «"${line}"»... set to: «$value»." | ||
| fi | ||
| fi | ||
| fi | ||
| '') (lib.mapAttrsToList (key: item: { inherit key item; }) config.settings)} | ||
| echo | ||
| echo "Finished validating..." | ||
| echo " Errors: $error" | ||
| echo " Warnings: $warn" | ||
| echo | ||
| if ((error)); then | ||
| echo "=> Kernel configuration validation failed..." | ||
| echo "... aborting." | ||
| false | ||
| fi | ||
| if ((warn)); then | ||
| echo "=> Kernel configuration passed with warnings..." | ||
| echo "... continuing." | ||
| fi | ||
| ) | ||
| ''; | ||
| in | ||
| { | ||
| options = { | ||
| configfile = lib.mkOption { | ||
| readOnly = true; | ||
| type = lib.types.str; | ||
| description = '' | ||
| String that can directly be used as a kernel config file contents. | ||
| ''; | ||
| }; | ||
| validatorSnippet = lib.mkOption { | ||
| readOnly = true; | ||
| type = lib.types.str; | ||
| description = '' | ||
| String that can directly be used as a kernel config file contents. | ||
| ''; | ||
| }; | ||
| }; | ||
| config = { | ||
| inherit configfile validatorSnippet; | ||
| }; | ||
| } | ||
| ) | ||
| { settings = structuredConfig; _file = "(structuredConfig argument)"; } | ||
| ] ++ modules; | ||
| }).config; | ||
| } |