nixos: add genode.shells option
parent
2f89f5258d
commit
12501f291d
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@ -0,0 +1,182 @@
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let Genode = env:DHALL_GENODE
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let Prelude = Genode.Prelude
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let XML = Prelude.XML
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let VFS = Genode.VFS
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let Init = Genode.Init
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let Child = Init.Child
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let parentRoutes =
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Prelude.List.map Text Init.ServiceRoute.Type Init.ServiceRoute.parent
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let EnvVar = Prelude.Map.Entry Text Text
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in λ ( params
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: { name : Text
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, coreutils : Text
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, env : List EnvVar
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, nic : Optional Text
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, script : Text
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}
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) →
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let socketsVfs =
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merge
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{ Some =
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λ(interface : Text) →
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[ VFS.dir
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"sockets"
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[ VFS.fs VFS.FS::{ label = "${interface}.sockets" } ]
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]
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, None = [] : List XML.Type
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}
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params.nic
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let init =
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Init::{
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, routes = parentRoutes [ "Timer", "Rtc", "File_system" ]
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, children = toMap
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{ vfs =
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Child.flat
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Child.Attributes::{
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, binary = "vfs"
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, exitPropagate = True
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, provides = [ "File_system" ]
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, resources = Genode.Init.Resources::{
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, caps = 256
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, ram = Genode.units.MiB 8
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}
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, config = Init.Config::{
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, content =
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[ VFS.vfs
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[ VFS.dir
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"dev"
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( [ VFS.dir "pipes" [ VFS.leaf "pipe" ]
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, VFS.leaf "log"
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, VFS.leaf "null"
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, VFS.leaf "rtc"
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, VFS.leaf "zero"
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]
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# socketsVfs
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)
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, VFS.dir
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"usr"
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[ VFS.dir
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"bin"
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[ VFS.symlink
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"env"
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"${params.coreutils}/bin/env"
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]
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]
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, VFS.dir "tmp" [ VFS.leaf "ram" ]
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, VFS.dir
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"nix"
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[ VFS.dir
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"store"
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[ VFS.fs VFS.FS::{ label = "nix-store" } ]
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]
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]
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]
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, policies =
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[ Init.Config.Policy::{
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, service = "File_system"
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, label = Init.LabelSelector.prefix "shell"
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, attributes = toMap
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{ root = "/", writeable = "yes" }
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}
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, Init.Config.Policy::{
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, service = "File_system"
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, label = Init.LabelSelector.prefix "vfs_rom"
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, attributes = toMap
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{ root = "/", writeable = "yes" }
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}
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]
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}
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}
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, vfs_rom =
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Child.flat
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Child.Attributes::{
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, binary = "cached_fs_rom"
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, provides = [ "ROM" ]
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, resources = Genode.Init.Resources::{
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, ram = Genode.units.MiB 16
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}
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, config = Init.Config::{
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, policies =
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[ Init.Config.Policy::{
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, service = "ROM"
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, diag = Some True
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, label = Init.LabelSelector.prefix "shell"
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}
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]
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}
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}
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, shell =
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Child.flat
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Child.Attributes::{
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, binary = "bash"
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, exitPropagate = True
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, resources = Genode.Init.Resources::{
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, caps = 256
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, ram = Genode.units.MiB 8
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}
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, config = Init.Config::{
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, content =
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[ XML.leaf
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{ name = "libc"
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, attributes = toMap
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{ stdin = "/dev/null"
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, stdout = "/dev/log"
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, stderr = "/dev/log"
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, pipe = "/dev/pipes"
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, rtc = "/dev/rtc"
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, socket = "/dev/sockets"
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}
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}
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, VFS.vfs [ VFS.leaf "fs" ]
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]
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# Prelude.List.map
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Text
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XML.Type
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( λ(x : Text) →
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XML.leaf
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{ name = "arg"
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, attributes = toMap { value = x }
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}
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)
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[ "bash", params.script ]
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# Prelude.List.map
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EnvVar
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XML.Type
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( λ(e : EnvVar) →
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XML.leaf
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{ name = "env"
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, attributes = toMap
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{ key = e.mapKey, value = e.mapValue }
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}
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)
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params.env
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}
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, routes =
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Prelude.List.map
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Text
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Init.ServiceRoute.Type
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( λ(label : Text) →
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Init.ServiceRoute.parentLabel
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"ROM"
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(Some label)
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(Some label)
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)
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[ "libc.lib.so"
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, "libm.lib.so"
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, "posix.lib.so"
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, "vfs.lib.so"
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]
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}
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}
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}
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in Init.toChild init Init.Attributes::{=}
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@ -0,0 +1,67 @@
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{ config, pkgs, lib, ... }:
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with lib;
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{
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options.genode.shells = mkOption {
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default = { };
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type = with types;
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attrsOf (submodule {
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options = {
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environmentVariables = mkOption {
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type = with types; attrsOf (either str (listOf str));
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apply =
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mapAttrs (n: v: if isList v then concatStringsSep ":" v else v);
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};
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inputs = mkOption {
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description = "List of packages to add to the shell environment";
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default = [ ];
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type = types.listOf types.package;
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};
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nic = lib.mkOption {
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type = with types; nullOr str;
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default = null;
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example = "eth0";
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description = ''
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Grant access to an IP stack for this interface.
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Only UDP and TCP are supported. No raw device access.
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'';
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};
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script = mkOption {
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type = types.lines;
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description = "Shell script to execute";
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};
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};
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});
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};
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config.genode.init.children = mapAttrs' (name: shell: {
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name = name + ".shell";
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value = {
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inputs = with pkgs;
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with genodePackages;
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[ bash cached_fs_rom libc posix vfs vfs_pipe ] ++ shell.inputs;
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configFile = let
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nic =
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if shell.nic == null then "None Text" else ''Some "${shell.nic}"'';
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env = mapAttrsToList (mapKey: mapValue:
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'', { mapKey = "${mapKey}", mapValue = "${mapValue}" }'')
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shell.environmentVariables;
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in pkgs.writeText "${name}.shell.dhall" ''
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let Genode = env:DHALL_GENODE in
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${./shell.dhall}
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{ name = "${name}"
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, coreutils = "${pkgs.coreutils}"
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, env = [${toString env} ] : Genode.Prelude.Map.Type Text Text
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, nic = ${nic}
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, script = "${pkgs.writeText "${name}.shell.script" shell.script}"
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}
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'';
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};
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}) config.genode.shells;
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}
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