560a1103ad
This allows specifying rules for systemd-tmpfiles. Also, enable systemd-tmpfiles-clean.timer so that stuff is cleaned up automatically 15 minutes after boot and every day, *if* you have the appropriate cleanup rules (which we don't have by default).
102 lines
2.4 KiB
Nix
102 lines
2.4 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.runCommand "readonly-mountpoint" {} ''
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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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strip -s $out/bin/readonly-mountpoint
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'';
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bootStage2 = pkgs.substituteAll {
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src = ./stage-2-init.sh;
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shellDebug = "${pkgs.bashInteractive}/bin/bash";
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isExecutable = true;
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inherit (config.boot) devShmSize runSize cleanTmpDir;
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inherit (config.nix) readOnlyStore;
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ttyGid = config.ids.gids.tty;
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path =
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[ pkgs.coreutils
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pkgs.utillinux
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pkgs.sysvtools
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] ++ (optional config.boot.cleanTmpDir pkgs.findutils)
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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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# FIXME: should replace this with something that uses systemd-tmpfiles.
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cleanTmpDir = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to delete all files in <filename>/tmp</filename> during boot.
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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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