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nixpkgs/nixos/modules/virtualisation/containers.nix
2021-03-21 20:57:28 +01:00

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3.4 KiB
Nix

{ config, lib, pkgs, utils, ... }:
let
cfg = config.virtualisation.containers;
inherit (lib) mkOption types;
# Once https://github.com/NixOS/nixpkgs/pull/75584 is merged we can use the TOML generator
toTOML = name: value: pkgs.runCommandNoCC name {
nativeBuildInputs = [ pkgs.remarshal ];
value = builtins.toJSON value;
passAsFile = [ "value" ];
} ''
json2toml "$valuePath" "$out"
'';
in
{
meta = {
maintainers = [] ++ lib.teams.podman.members;
};
imports = [
(
lib.mkRemovedOptionModule
[ "virtualisation" "containers" "users" ]
"All users with `isNormalUser = true` set now get appropriate subuid/subgid mappings."
)
];
options.virtualisation.containers = {
enable =
mkOption {
type = types.bool;
default = false;
description = ''
This option enables the common /etc/containers configuration module.
'';
};
ociSeccompBpfHook.enable = mkOption {
type = types.bool;
default = false;
description = "Enable the OCI seccomp BPF hook";
};
containersConf = mkOption {
default = {};
description = "containers.conf configuration";
type = types.submodule {
options = {
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Extra configuration that should be put in the containers.conf
configuration file
'';
};
};
};
};
registries = {
search = mkOption {
type = types.listOf types.str;
default = [ "docker.io" "quay.io" ];
description = ''
List of repositories to search.
'';
};
insecure = mkOption {
default = [];
type = types.listOf types.str;
description = ''
List of insecure repositories.
'';
};
block = mkOption {
default = [];
type = types.listOf types.str;
description = ''
List of blocked repositories.
'';
};
};
policy = mkOption {
default = {};
type = types.attrs;
example = lib.literalExample ''
{
default = [ { type = "insecureAcceptAnything"; } ];
transports = {
docker-daemon = {
"" = [ { type = "insecureAcceptAnything"; } ];
};
};
}
'';
description = ''
Signature verification policy file.
If this option is empty the default policy file from
<literal>skopeo</literal> will be used.
'';
};
};
config = lib.mkIf cfg.enable {
environment.etc."containers/containers.conf".text = ''
[network]
cni_plugin_dirs = ["${pkgs.cni-plugins}/bin/"]
[engine]
init_path = "${pkgs.catatonit}/bin/catatonit"
${lib.optionalString (cfg.ociSeccompBpfHook.enable) ''
hooks_dir = [
"${config.boot.kernelPackages.oci-seccomp-bpf-hook}",
]
''}
'' + cfg.containersConf.extraConfig;
environment.etc."containers/registries.conf".source = toTOML "registries.conf" {
registries = lib.mapAttrs (n: v: { registries = v; }) cfg.registries;
};
environment.etc."containers/policy.json".source =
if cfg.policy != {} then pkgs.writeText "policy.json" (builtins.toJSON cfg.policy)
else utils.copyFile "${pkgs.skopeo.src}/default-policy.json";
};
}