nixpkgs/nixos/modules/system/boot/stage-2.nix

109 lines
2.9 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
useHostResolvConf = config.networking.resolvconf.enable && config.networking.useHostResolvConf;
bootStage2 = pkgs.substituteAll {
src = ./stage-2-init.sh;
shellDebug = "${pkgs.bashInteractive}/bin/bash";
shell = "${pkgs.bash}/bin/bash";
inherit (config.boot) systemdExecutable extraSystemdUnitPaths;
isExecutable = true;
inherit (config.nix) readOnlyStore;
inherit useHostResolvConf;
inherit (config.system.build) earlyMountScript;
path = lib.makeBinPath ([
pkgs.coreutils
pkgs.util-linux
] ++ lib.optional useHostResolvConf pkgs.openresolv);
fsPackagesPath = lib.makeBinPath config.system.fsPackages;
systemdUnitPathEnvVar = lib.optionalString (config.boot.extraSystemdUnitPaths != [])
("SYSTEMD_UNIT_PATH="
+ builtins.concatStringsSep ":" config.boot.extraSystemdUnitPaths
+ ":"); # If SYSTEMD_UNIT_PATH ends with an empty component (":"), the usual unit load path will be appended to the contents of the variable
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.
'';
};
systemdExecutable = mkOption {
default = "systemd";
type = types.str;
description = ''
The program to execute to start systemd. Typically
<literal>systemd</literal>, which will find systemd in the
PATH.
'';
};
extraSystemdUnitPaths = mkOption {
default = [];
type = types.listOf types.str;
description = ''
Additional paths that get appended to the SYSTEMD_UNIT_PATH environment variable
that can contain mutable unit files.
'';
};
};
};
config = {
system.build.bootStage2 = bootStage2;
};
}