forked from mirrors/nixpkgs
nixos/systemd-boot: Support extra EFI entries
This commit is contained in:
Michael Hoang
parent
96690c5b66
commit
f6b61981b1
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@ -45,16 +45,6 @@ initrd {initrd}
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options {kernel_params}
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"""
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# The boot loader entry for memtest86.
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#
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# TODO: This is hard-coded to use the 64-bit EFI app, but it could probably
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# be updated to use the 32-bit EFI app on 32-bit systems. The 32-bit EFI
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# app filename is BOOTIA32.efi.
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MEMTEST_BOOT_ENTRY = """title MemTest86
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efi /efi/memtest86/BOOTX64.efi
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"""
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def generation_conf_filename(profile: Optional[str], generation: int, specialisation: Optional[str]) -> str:
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pieces = [
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"nixos",
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@ -283,23 +273,24 @@ def main() -> None:
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except OSError as e:
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print("ignoring profile '{}' in the list of boot entries because of the following error:\n{}".format(profile, e), file=sys.stderr)
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memtest_entry_file = "@efiSysMountPoint@/loader/entries/memtest86.conf"
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if os.path.exists(memtest_entry_file):
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os.unlink(memtest_entry_file)
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shutil.rmtree("@efiSysMountPoint@/efi/memtest86", ignore_errors=True)
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if "@memtest86@" != "":
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mkdir_p("@efiSysMountPoint@/efi/memtest86")
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for path in glob.iglob("@memtest86@/*"):
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if os.path.isdir(path):
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shutil.copytree(path, os.path.join("@efiSysMountPoint@/efi/memtest86", os.path.basename(path)))
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else:
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shutil.copy(path, "@efiSysMountPoint@/efi/memtest86/")
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for root, _, files in os.walk('@efiSysMountPoint@/efi/nixos/.extra-files', topdown=False):
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relative_root = root.removeprefix("@efiSysMountPoint@/efi/nixos/.extra-files").removeprefix("/")
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actual_root = os.path.join("@efiSysMountPoint@", relative_root)
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memtest_entry_file = "@efiSysMountPoint@/loader/entries/memtest86.conf"
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memtest_entry_file_tmp_path = "%s.tmp" % memtest_entry_file
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with open(memtest_entry_file_tmp_path, 'w') as f:
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f.write(MEMTEST_BOOT_ENTRY)
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os.rename(memtest_entry_file_tmp_path, memtest_entry_file)
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for file in files:
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actual_file = os.path.join(actual_root, file)
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if os.path.exists(actual_file):
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os.unlink(actual_file)
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os.unlink(os.path.join(root, file))
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if not len(os.listdir(actual_root)):
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os.rmdir(actual_root)
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os.rmdir(root)
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mkdir_p("@efiSysMountPoint@/efi/nixos/.extra-files")
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subprocess.check_call("@copyExtraFiles@")
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# Since fat32 provides little recovery facilities after a crash,
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# it can leave the system in an unbootable state, when a crash/outage
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@ -29,6 +29,20 @@ let
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inherit (efi) efiSysMountPoint canTouchEfiVariables;
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memtest86 = if cfg.memtest86.enable then pkgs.memtest86-efi else "";
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copyExtraFiles = pkgs.writeShellScript "copy-extra-files" ''
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empty_file=$(mktemp)
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${concatStrings (mapAttrsToList (n: v: ''
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${pkgs.coreutils}/bin/install -Dp "${v}" "${efi.efiSysMountPoint}/"${escapeShellArg n}
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${pkgs.coreutils}/bin/install -D $empty_file "${efi.efiSysMountPoint}/efi/nixos/.extra-files/"${escapeShellArg n}
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'') cfg.extraFiles)}
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${concatStrings (mapAttrsToList (n: v: ''
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${pkgs.coreutils}/bin/install -Dp "${pkgs.writeText n v}" "${efi.efiSysMountPoint}/loader/entries/"${escapeShellArg n}
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${pkgs.coreutils}/bin/install -D $empty_file "${efi.efiSysMountPoint}/efi/nixos/.extra-files/loader/entries/"${escapeShellArg n}
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'') cfg.extraEntries)}
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'';
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};
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checkedSystemdBootBuilder = pkgs.runCommand "systemd-boot" {
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@ -125,6 +139,51 @@ in {
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<literal>true</literal>.
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'';
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};
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entryFilename = mkOption {
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default = "memtest86.conf";
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type = types.str;
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description = ''
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<literal>systemd-boot</literal> orders the menu entries by the config file names,
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so if you want something to appear after all the NixOS entries,
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it should start with <filename>o</filename> or onwards.
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'';
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};
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};
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extraEntries = mkOption {
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type = types.attrsOf types.lines;
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default = {};
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example = literalExpression ''
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{ "memtest86.conf" = '''
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title MemTest86
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efi /efi/memtest86/memtest86.efi
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'''; }
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'';
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description = ''
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Any additional entries you want added to the <literal>systemd-boot</literal> menu.
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These entries will be copied to <filename>/boot/loader/entries</filename>.
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Each attribute name denotes the destination file name,
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and the corresponding attribute value is the contents of the entry.
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<literal>systemd-boot</literal> orders the menu entries by the config file names,
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so if you want something to appear after all the NixOS entries,
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it should start with <filename>o</filename> or onwards.
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'';
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};
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extraFiles = mkOption {
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type = types.attrsOf types.path;
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default = {};
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example = literalExpression ''
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{ "efi/memtest86/memtest86.efi" = "''${pkgs.memtest86-efi}/BOOTX64.efi"; }
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'';
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description = ''
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A set of files to be copied to <filename>/boot</filename>.
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Each attribute name denotes the destination file name in
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<filename>/boot</filename>, while the corresponding
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attribute value specifies the source file.
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'';
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};
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graceful = mkOption {
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@ -148,15 +207,55 @@ in {
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assertions = [
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{
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assertion = (config.boot.kernelPackages.kernel.features or { efiBootStub = true; }) ? efiBootStub;
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message = "This kernel does not support the EFI boot stub";
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}
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];
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] ++ concatMap (filename: [
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{
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assertion = !(hasInfix "/" filename);
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message = "boot.loader.systemd-boot.extraEntries.${lib.strings.escapeNixIdentifier filename} is invalid: entries within folders are not supported";
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}
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{
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assertion = hasSuffix ".conf" filename;
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message = "boot.loader.systemd-boot.extraEntries.${lib.strings.escapeNixIdentifier filename} is invalid: entries must have a .conf file extension";
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}
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]) (builtins.attrNames cfg.extraEntries)
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++ concatMap (filename: [
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{
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assertion = !(hasPrefix "/" filename);
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message = "boot.loader.systemd-boot.extraFiles.${lib.strings.escapeNixIdentifier filename} is invalid: paths must not begin with a slash";
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}
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{
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assertion = !(hasInfix ".." filename);
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message = "boot.loader.systemd-boot.extraFiles.${lib.strings.escapeNixIdentifier filename} is invalid: paths must not reference the parent directory";
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}
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{
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assertion = !(hasInfix "nixos/.extra-files" (toLower filename));
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message = "boot.loader.systemd-boot.extraFiles.${lib.strings.escapeNixIdentifier filename} is invalid: files cannot be placed in the nixos/.extra-files directory";
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}
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]) (builtins.attrNames cfg.extraFiles);
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boot.loader.grub.enable = mkDefault false;
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boot.loader.supportsInitrdSecrets = true;
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boot.loader.systemd-boot.extraFiles = mkMerge [
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# TODO: This is hard-coded to use the 64-bit EFI app, but it could probably
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# be updated to use the 32-bit EFI app on 32-bit systems. The 32-bit EFI
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# app filename is BOOTIA32.efi.
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(mkIf cfg.memtest86.enable {
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"efi/memtest86/BOOTX64.efi" = "${pkgs.memtest86-efi}/BOOTX64.efi";
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})
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];
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boot.loader.systemd-boot.extraEntries = mkMerge [
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(mkIf cfg.memtest86.enable {
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"${cfg.memtest86.entryFilename}" = ''
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title MemTest86
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efi /efi/memtest86/BOOTX64.efi
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'';
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})
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];
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system = {
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build.installBootLoader = checkedSystemdBootBuilder;
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