113 lines
3.5 KiB
Nix
113 lines
3.5 KiB
Nix
{ config, lib, pkgs, options, ... }:
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let
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kernel = builtins.path {
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name = "aster-kernel-osdk-bin";
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path = config.aster_nixos.kernel;
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};
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stage-1-init = pkgs.writeShellScript "stage-1-init" ''
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#!/bin/sh
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# SPDX-License-Identifier: MPL-2.0
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NEW_ROOT=""
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NEW_INIT=""
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BREAK=""
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ARGS=""
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for arg in "$@"; do
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case "$arg" in
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root=*)
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NEW_ROOT=''${arg#root=}
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;;
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init=*)
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NEW_INIT=''${arg#init=}
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;;
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rd.break=*)
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BREAK=''${arg#rd.break=}
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;;
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*)
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ARGS="$ARGS $arg"
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;;
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esac
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done
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if [ "$BREAK" = "1" ]; then
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echo "Breaking into initramfs shell..."
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exec /bin/sh
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fi
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if [ -z "$NEW_ROOT" ] || [ -z "$NEW_INIT" ]; then
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echo "Error: 'root=' and 'init=' parameters are required."
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exit 1
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fi
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mkdir /sysroot
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mount -t ext2 "$NEW_ROOT" /sysroot
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mount -t proc none /sysroot/proc
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mount --move /dev /sysroot/dev
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exec switch_root /sysroot "$NEW_INIT" "$ARGS"
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'';
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initramfs = pkgs.makeInitrd {
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contents = [
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{
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object = "${pkgs.busybox}/bin";
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symlink = "/bin";
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}
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{
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object = stage-1-init;
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symlink = "/init";
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}
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];
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};
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in {
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boot.loader.grub.enable = true;
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boot.loader.grub.efiSupport = true;
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boot.loader.grub.device = "nodev";
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boot.loader.grub.efiInstallAsRemovable = true;
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boot.initrd.enable = false;
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boot.kernel.enable = false;
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# Hook function will be called in stage-2-init and before running systemd.
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boot.postBootCommands = ''
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echo "Executing postBootCommands..."
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if [ "${config.aster_nixos.disable-systemd}" = "true" ]; then
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${config.aster_nixos.stage-2-hook}
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fi
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'';
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# Suppress error and warning messages of systemd.
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# TODO: Fix errors and warnings from systemd and remove this setting.
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environment.sessionVariables = { SYSTEMD_LOG_LEVEL = "crit"; };
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system.systemBuilderCommands = ''
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echo "PATH=/bin:/nix/var/nix/profiles/system/sw/bin ostd.log_level=${config.aster_nixos.log-level} console=${config.aster_nixos.console} -- sh /init root=/dev/vda2 init=/nix/var/nix/profiles/system/stage-2-init rd.break=${
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if config.aster_nixos.break-into-stage-1-shell then "1" else "0"
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}" > $out/kernel-params
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mv $out/init $out/stage-2-init
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sed -i 's_^\([[:space:]]*\)\(exec > >(tee -i /run/log/stage-2-init.log) 2>&1\)$_\1# \2_' $out/stage-2-init
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if [ "${config.aster_nixos.disable-systemd}" = "true" ]; then
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sed -i 's/^[[:space:]]*echo "starting systemd..."$/# &/' $out/stage-2-init
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sed -i 's/^[[:space:]]*exec \/run\/current-system\/systemd\/lib\/systemd\/systemd "$@"$/# &/' $out/stage-2-init
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fi
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rm -rf $out/init
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ln -s /bin/busybox $out/init
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ln -s ${kernel} $out/kernel
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ln -s ${initramfs}/initrd $out/initrd
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'';
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system.activationScripts.modprobe = lib.mkForce "";
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nix.nixPath = options.nix.nixPath.default
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++ [ "nixpkgs-overlays=/etc/nixos/overlays" ];
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nix.settings = {
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filter-syscalls = false;
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require-sigs = false;
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sandbox = false;
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# FIXME: Support Nix build users (nixbld*) and remove this setting. For detailed gaps, see
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# <https://github.com/asterinas/asterinas/issues/2672>.
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build-users-group = "";
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substituters = [ "${config.aster_nixos.substituters}" ];
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trusted-public-keys = [ "${config.aster_nixos.trusted-public-keys}" ];
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};
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# FIXME: Currently, during `nixos-rebuild`, `texinfo/install-info` encounters a `SIGBUS`.
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documentation.info.enable = false;
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}
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