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nixos/boot.uki: add tries option for automatic boot assessment

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See https://uapi-group.org/specifications/specs/boot_loader_specification/#boot-counting
and https://systemd.io/AUTOMATIC_BOOT_ASSESSMENT/ .

Related to #284135.
This commit is contained in:
WilliButz 2024-02-12 12:44:58 +01:00
parent 4bd735b4dc
commit fbaf7446ec
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1 changed files with 16 additions and 1 deletions
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17
nixos/modules/system/boot/uki.nix
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@ -27,6 +27,20 @@ in
description = lib.mdDoc "Version of the image or generation the UKI belongs to";
};
tries = lib.mkOption {
type = lib.types.nullOr lib.types.ints.unsigned;
default = null;
description = lib.mdDoc ''
Number of boot attempts before this UKI is considered bad.
If no tries are specified (the default) automatic boot assessment remains inactive.
See documentation on [Automatic Boot Assessment](https://systemd.io/AUTOMATIC_BOOT_ASSESSMENT/) and
[boot counting](https://uapi-group.org/specifications/specs/boot_loader_specification/#boot-counting)
for more information.
'';
};
settings = lib.mkOption {
type = format.type;
description = lib.mdDoc ''
@ -69,8 +83,9 @@ in
name = config.boot.uki.name;
version = config.boot.uki.version;
versionInfix = if version != null then "_${version}" else "";
triesInfix = if cfg.tries != null then "+${builtins.toString cfg.tries}" else "";
in
name + versionInfix + ".efi";
name + versionInfix + triesInfix + ".efi";
system.build.uki = pkgs.runCommand config.system.boot.loader.ukiFile { } ''
mkdir -p $out