nixpkgs/nixos/modules/system/boot/stage-2.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

101 lines
2.3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
kernel = config.boot.kernelPackages.kernel;
activateConfiguration = config.system.activationScripts.script;
readonlyMountpoint = pkgs.runCommand "readonly-mountpoint" {} ''
mkdir -p $out/bin
cc -O3 ${./readonly-mountpoint.c} -o $out/bin/readonly-mountpoint
strip -s $out/bin/readonly-mountpoint
'';
bootStage2 = pkgs.substituteAll {
src = ./stage-2-init.sh;
shellDebug = "${pkgs.bashInteractive}/bin/bash";
isExecutable = true;
inherit (config.boot) devShmSize runSize cleanTmpDir;
inherit (config.nix) readOnlyStore;
ttyGid = config.ids.gids.tty;
path =
[ pkgs.coreutils
pkgs.utillinux
pkgs.sysvtools
] ++ (optional config.boot.cleanTmpDir pkgs.findutils)
++ optional config.nix.readOnlyStore readonlyMountpoint;
postBootCommands = pkgs.writeText "local-cmds"
''
${config.boot.postBootCommands}
${config.powerManagement.powerUpCommands}
'';
};
in
{
options = {
boot = {
postBootCommands = mkOption {
default = "";
example = "rm -f /var/log/messages";
type = types.lines;
description = ''
Shell commands to be executed just before systemd is started.
'';
};
devSize = mkOption {
default = "5%";
example = "32m";
type = types.str;
description = ''
Size limit for the /dev tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.
'';
};
devShmSize = mkOption {
default = "50%";
example = "256m";
type = types.str;
description = ''
Size limit for the /dev/shm tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.
'';
};
runSize = mkOption {
default = "25%";
example = "256m";
type = types.str;
description = ''
Size limit for the /run tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.
'';
};
cleanTmpDir = mkOption {
type = types.bool;
default = false;
description = ''
Whether to delete all files in <filename>/tmp</filename> during boot.
'';
};
};
};
config = {
system.build.bootStage2 = bootStage2;
};
}