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Add hostStoreAsReadOnly option to service host-store.

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Make /nix/store and /run/system read-only when hostStoreAsReadOnly == true.
This commit is contained in:
Moises Nessim 2019-07-11 15:42:36 -05:00
parent 221bccd7f1
commit c5fb4177b8
1 changed files with 7 additions and 2 deletions
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9
src/nix/modules/service/host-store.nix
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@ -17,6 +17,11 @@ in
default = false;
description = "Bind mounts the host store if enabled, avoiding copying.";
};
service.hostStoreAsReadOnly = mkOption {
type = types.bool;
default = false;
description = "Adds a ':ro' (read-only) access mode to the host nix store bind mount.";
};
service.useHostNixDaemon = mkOption {
type = types.bool;
default = false;
@ -29,8 +34,8 @@ in
service.build.context = "${../../../arion-image}";
service.environment.NIX_REMOTE = lib.optionalString config.service.useHostNixDaemon "daemon";
service.volumes = [
"${config.host.nixStorePrefix}/nix/store:/nix/store"
"${config.host.nixStorePrefix}${pkgs.buildEnv { name = "container-system-env"; paths = [ pkgs.bashInteractive pkgs.coreutils ]; }}:/run/system"
"${config.host.nixStorePrefix}/nix/store:/nix/store${lib.optionalString config.service.hostStoreAsReadOnly ":ro"}"
"${config.host.nixStorePrefix}${pkgs.buildEnv { name = "container-system-env"; paths = [ pkgs.bashInteractive pkgs.coreutils ]; }}:/run/system${lib.optionalString config.service.hostStoreAsReadOnly ":ro"}"
] ++ lib.optional config.service.useHostNixDaemon "/nix/var/nix/daemon-socket:/nix/var/nix/daemon-socket";
service.command = lib.mkDefault (map escape (config.image.rawConfig.Cmd or []));
};