85 lines
2.7 KiB
Nix
85 lines
2.7 KiB
Nix
{ config, lib, modulesPath, pkgs, ... }:
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let
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writePython3 = pkgs.writers.makePythonWriter
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pkgs.python3Minimal pkgs.python3Packages pkgs.buildPackages.python3Packages;
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# writePython3Bin takes the same arguments as writePython3 but outputs a directory (like writeScriptBin)
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writePython3Bin = name: writePython3 "/bin/${name}";
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restore-network = writePython3Bin "restore-network" {
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flakeIgnore = [ "E501" ];
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} ./restore_routes.py;
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# does not link with iptables enabled
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iprouteStatic = pkgs.pkgsStatic.iproute2.override { iptables = null; };
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in
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{
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imports = [
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(modulesPath + "/installer/netboot/netboot-minimal.nix")
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../installer.nix
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../networkd.nix
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../serial.nix
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../restore-remote-access.nix
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];
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options = {
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system.kexec-installer.name = lib.mkOption {
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type = lib.types.str;
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default = "nixos-kexec-installer";
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description = ''
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The variant of the kexec installer to use.
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'';
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};
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};
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config = {
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# This is a variant of the upstream kexecScript that also allows embedding
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# a ssh key.
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system.build.kexecRun = pkgs.runCommand "kexec-run" { } ''
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install -D -m 0755 ${./kexec-run.sh} $out
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sed -i \
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-e 's|@init@|${config.system.build.toplevel}/init|' \
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-e 's|@kernelParams@|${lib.escapeShellArgs config.boot.kernelParams}|' \
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$out
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${pkgs.shellcheck}/bin/shellcheck $out
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'';
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system.build.kexecTarball = pkgs.runCommand "kexec-tarball" { } ''
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mkdir kexec $out
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cp "${config.system.build.netbootRamdisk}/initrd" kexec/initrd
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cp "${config.system.build.kernel}/${config.system.boot.loader.kernelFile}" kexec/bzImage
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cp "${config.system.build.kexecRun}" kexec/run
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cp "${pkgs.pkgsStatic.kexec-tools}/bin/kexec" kexec/kexec
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cp "${iprouteStatic}/bin/ip" kexec/ip
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${lib.optionalString (pkgs.hostPlatform == pkgs.buildPlatform) ''
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kexec/ip -V
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kexec/kexec --version
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''}
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tar -czvf $out/${config.system.kexec-installer.name}-${pkgs.stdenv.hostPlatform.system}.tar.gz kexec
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'';
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# for detection if we are on kexec
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environment.etc.is_kexec.text = "true";
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systemd.services.restore-network = {
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before = [ "network-pre.target" ];
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wants = [ "network-pre.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = [
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"${restore-network}/bin/restore-network /root/network/addrs.json /root/network/routes-v4.json /root/network/routes-v6.json /etc/systemd/network"
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];
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};
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unitConfig.ConditionPathExists = [
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"/root/network/addrs.json"
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"/root/network/routes-v4.json"
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"/root/network/routes-v6.json"
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];
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};
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};
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}
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