6efcfe03ae
A new internal config option `fileSystems.<name>.early` is added to indicate that the filesystem needs to be loaded very early (i.e. in initrd). They are transformed to a shell script in `system.build.earlyMountScript` with calls to an undefined `specialMount` function, which is expected to be caller-specific. This option is used by stage-1, stage-2 and activation script to set up and remount those filesystems. Options for them are updated according to systemd defaults.
95 lines
2.1 KiB
Nix
95 lines
2.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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kernel = config.boot.kernelPackages.kernel;
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activateConfiguration = config.system.activationScripts.script;
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readonlyMountpoint = pkgs.stdenv.mkDerivation {
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name = "readonly-mountpoint";
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unpackPhase = "true";
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installPhase = ''
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mkdir -p $out/bin
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cc -O3 ${./readonly-mountpoint.c} -o $out/bin/readonly-mountpoint
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'';
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};
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bootStage2 = pkgs.substituteAll {
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src = ./stage-2-init.sh;
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shellDebug = "${pkgs.bashInteractive}/bin/bash";
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isExecutable = true;
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inherit (config.nix) readOnlyStore;
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inherit (config.networking) useHostResolvConf;
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inherit (config.system.build) earlyMountScript;
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path =
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[ pkgs.coreutils
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pkgs.utillinux
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pkgs.openresolv
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] ++ optional config.nix.readOnlyStore readonlyMountpoint;
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postBootCommands = pkgs.writeText "local-cmds"
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''
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${config.boot.postBootCommands}
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${config.powerManagement.powerUpCommands}
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'';
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};
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in
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{
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options = {
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boot = {
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postBootCommands = mkOption {
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default = "";
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example = "rm -f /var/log/messages";
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type = types.lines;
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description = ''
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Shell commands to be executed just before systemd is started.
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'';
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};
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devSize = mkOption {
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default = "5%";
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example = "32m";
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type = types.str;
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description = ''
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Size limit for the /dev tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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devShmSize = mkOption {
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default = "50%";
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example = "256m";
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type = types.str;
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description = ''
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Size limit for the /dev/shm tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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runSize = mkOption {
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default = "25%";
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example = "256m";
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type = types.str;
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description = ''
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Size limit for the /run tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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};
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};
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config = {
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system.build.bootStage2 = bootStage2;
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};
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}
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