diff options
| -rw-r--r-- | lass/3modules/bindfs.nix | 51 | ||||
| -rw-r--r-- | lass/3modules/default.nix | 2 | ||||
| -rw-r--r-- | lass/3modules/sync-containers.nix | 165 |
3 files changed, 218 insertions, 0 deletions
diff --git a/lass/3modules/bindfs.nix b/lass/3modules/bindfs.nix new file mode 100644 index 000000000..5c8df8dc5 --- /dev/null +++ b/lass/3modules/bindfs.nix @@ -0,0 +1,51 @@ +with import <stockholm/lib>; +{ config, pkgs, ... }: +let + cfg = config.lass.bindfs; +in { + options.lass.bindfs = mkOption { + type = types.attrsOf (types.submodule ({ config, ... }: { + options = { + target = mkOption { + description = '' + destination where bindfs mounts to. + second positional argument to bindfs. + ''; + default = config._module.args.name; + type = types.absolute-pathname; + }; + source = mkOption { + description = '' + source folder where the mounted directory is originally. + first positional argument to bindfs. + ''; + type = types.absolute-pathname; + }; + options = mkOption { + description = '' + additional arguments to bindfs + ''; + type = types.listOf types.str; + default = []; + }; + }; + })); + default = {}; + }; + + config = mkIf (cfg != {}) { + systemd.services = mapAttrs' (n: mount: let + name = replaceStrings [ "/" ] [ "_" ] n; + in nameValuePair "bindfs-${name}" { + wantedBy = [ "local-fs.target" ]; + path = [ pkgs.coreutils ]; + serviceConfig = { + ExecStartPre = pkgs.writeDash "bindfs-init-${name}" '' + mkdir -p '${mount.source}' + mkdir -p '${mount.target}' + ''; + ExecStart = "${pkgs.bindfs}/bin/bindfs -f ${concatStringsSep " " mount.options} ${mount.source} ${mount.target}"; + }; + }) cfg; + }; +} diff --git a/lass/3modules/default.nix b/lass/3modules/default.nix index c3c73bdcb..8bee08caa 100644 --- a/lass/3modules/default.nix +++ b/lass/3modules/default.nix @@ -1,6 +1,7 @@ _: { imports = [ + ./bindfs.nix ./dnsmasq.nix ./ejabberd ./folderPerms.nix @@ -12,6 +13,7 @@ _: ./pyload.nix ./restic.nix ./screenlock.nix + ./sync-containers.nix ./usershadow.nix ./xjail.nix ./autowifi.nix diff --git a/lass/3modules/sync-containers.nix b/lass/3modules/sync-containers.nix new file mode 100644 index 000000000..990e32127 --- /dev/null +++ b/lass/3modules/sync-containers.nix @@ -0,0 +1,165 @@ +with import <stockholm/lib>; +{ config, pkgs, ... }: let + cfg = config.lass.sync-containers; + paths = cname: { + plain = "/var/lib/containers/${cname}/var/state"; + ecryptfs = "${cfg.dataLocation}/${cname}/ecryptfs"; + securefs = "${cfg.dataLocation}/${cname}/securefs"; + }; + start = cname: { + plain = '' + ''; + ecryptfs = '' + if ! mount | grep -q '${cfg.dataLocation}/${cname}/ecryptfs on /var/lib/containers/${cname}/var/state type ecryptfs'; then + if [ -e ${cfg.dataLocation}/${cname}/ecryptfs/.cfg.json ]; then + ${pkgs.ecrypt}/bin/ecrypt mount ${cfg.dataLocation}/${cname}/ecryptfs /var/lib/containers/${cname}/var/state + else + ${pkgs.ecrypt}/bin/ecrypt init ${cfg.dataLocation}/${cname}/ecryptfs /var/lib/containers/${cname}/var/state + fi + fi + ''; + securefs = '' + ## TODO init file systems if it does not exist + # ${pkgs.securefs}/bin/securefs create --format 3 ${cfg.dataLocation}/${cname}/securefs + if ! ${pkgs.mount}/bin/mount | grep -q '^securefs on /var/lib/containers/${cname}/var/state type fuse.securefs'; then + ${pkgs.securefs}/bin/securefs mount ${cfg.dataLocation}/${cname}/securefs /var/lib/containers/${cname}/var/state -b -o allow_other -o default_permissions + fi + ''; + }; + stop = cname: { + plain = '' + ''; + ecryptfs = '' + ${pkgs.ecrypt}/bin/ecrypt unmount ${cfg.dataLocation}/${cname}/ecryptfs /var/lib/containers/${cname}/var/state + ''; + securefs = '' + umount /var/lib/containers/${cname}/var/state + ''; + }; +in { + options.lass.sync-containers = { + dataLocation = mkOption { + description = '' + location where the encrypted sync-container lie around + ''; + default = "/var/lib/sync-containers"; + type = types.absolute-pathname; + }; + containers = mkOption { + type = types.attrsOf (types.submodule ({ config, ... }: { + options = { + name = mkOption { + description = '' + name of the container + ''; + default = config._module.args.name; + type = types.str; + }; + peers = mkOption { + description = '' + syncthing peers to share this container with + ''; + default = []; + type = types.listOf types.str; + }; + hostIp = mkOption { # TODO find this automatically + description = '' + hostAddress of the privateNetwork + ''; + example = "10.233.2.15"; + type = types.str; + }; + localIp = mkOption { # TODO find this automatically + description = '' + localAddress of the privateNetwork + ''; + example = "10.233.2.16"; + type = types.str; + }; + format = mkOption { + description = '' + file system encrption format of the container + ''; + type = types.enum [ "plain" "ecryptfs" "securefs" ]; + }; + }; + })); + default = {}; + }; + }; + + config = mkIf (cfg.containers != {}) { + programs.fuse.userAllowOther = true; + + services.syncthing.declarative.folders = (mapAttrs' (_: ctr: nameValuePair "${(paths ctr.name).${ctr.format}}" ({ + devices = ctr.peers; + ignorePerms = false; + })) cfg.containers); + + krebs.permown = (mapAttrs' (_: ctr: nameValuePair "${(paths ctr.name).${ctr.format}}" ({ + owner = "root"; + group = "syncthing"; + umask = "0007"; + })) cfg.containers); + + systemd.services = mapAttrs' (n: ctr: nameValuePair "containers@${ctr.name}" ({ + reloadIfChanged = mkForce false; + })) cfg.containers; + + containers = mapAttrs' (n: ctr: nameValuePair ctr.name ({ + config = { ... }: { + environment.systemPackages = [ + pkgs.git + ]; + system.activationScripts.fuse = { + text = '' + ${pkgs.coreutils}/bin/mknod /dev/fuse c 10 229 + ''; + deps = []; + }; + }; + allowedDevices = [ + { modifier = "rwm"; node = "/dev/fuse"; } + ]; + autoStart = false; + enableTun = true; + privateNetwork = true; + hostAddress = ctr.hostIp; + localAddress = ctr.localIp; + })) cfg.containers; + + environment.systemPackages = flatten (mapAttrsToList (n: ctr: [ + (pkgs.writeDashBin "start-${ctr.name}" '' + set -euf + set -x + + mkdir -p /var/lib/containers/${ctr.name}/var/state + + ${(start ctr.name).${ctr.format}} + + STATE=$(${pkgs.nixos-container}/bin/nixos-container status ${ctr.name}) + if [ "$STATE" = 'down' ]; then + ${pkgs.nixos-container}/bin/nixos-container start ${ctr.name} + fi + + ${pkgs.nixos-container}/bin/nixos-container run ${ctr.name} -- ${pkgs.writeDash "deploy-${ctr.name}" '' + set -x + + mkdir -p /var/state/var_src + ln -sfTr /var/state/var_src /var/src + touch /etc/NIXOS + ''} + + if [ -h /var/lib/containers/${ctr.name}/var/src/nixos-config ] && (! ping -c1 -q -w5 ${ctr.name}.r); then + ${pkgs.nixos-container}/bin/nixos-container run ${ctr.name} -- nixos-rebuild -I /var/src switch + fi + '') + (pkgs.writeDashBin "stop-${ctr.name}" '' + set -euf + + ${pkgs.nixos-container}/bin/nixos-container stop ${ctr.name} + ${(stop ctr.name).${ctr.format}} + '') + ]) cfg.containers); + }; +} |