nixos: add jitter_sponge entropy source

Share an entropy generator amount the systemd services. Would be nice to
have that virtio_rng driver.

nixos-modules/genode-core.nix

@@ -116,6 +116,7 @@ in {
           ++ (with pkgs.genodePackages; [
             init
             cached_fs_rom
+            jitter_sponge
             report_rom
             vfs
           ])));

nixos-modules/genode-init.nix

@@ -41,11 +41,12 @@ in {
         in  Genode.Init::{
             , routes =
               [ Genode.Init.ServiceRoute.parent "File_system"
-              , Genode.Init.ServiceRoute.parent "Rtc"
-              , Genode.Init.ServiceRoute.parent "Timer"
-              , Genode.Init.ServiceRoute.parent "IRQ"
               , Genode.Init.ServiceRoute.parent "IO_MEM"
               , Genode.Init.ServiceRoute.parent "IO_PORT"
+              , Genode.Init.ServiceRoute.parent "IRQ"
+              , Genode.Init.ServiceRoute.parent "Rtc"
+              , Genode.Init.ServiceRoute.parent "Terminal"
+              , Genode.Init.ServiceRoute.parent "Timer"
               ]
             }
       '';

nixos-modules/store-wrapper.dhall

@@ -39,6 +39,22 @@ in  λ(subinit : Init.Type) →
                         , routes = [ Init.ServiceRoute.parent "IO_PORT" ]
                         }
                     )
+                , child
+                    "jitter_sponge"
+                    ( Child.flat
+                        Child.Attributes::{
+                        , binary = "jitter_sponge"
+                        , provides = [ "Terminal" ]
+                        , config = Init.Config::{
+                          , policies =
+                            [ Init.Config.Policy::{
+                              , service = "Terminal"
+                              , label = Init.LabelSelector.suffix "entropy"
+                              }
+                            ]
+                          }
+                        }
+                    )
                 , child
                     "store_fs"
                     ( Child.flat

nixos-modules/systemd-runner.dhall

@@ -36,7 +36,8 @@ in  λ ( params
 
       let init =
             Init::{
-            , routes = parentRoutes [ "Timer", "Rtc", "File_system" ]
+            , routes =
+                parentRoutes [ "File_system", "Rtc", "Terminal", "Timer" ]
             , children = toMap
                 { vfs =
                     Child.flat
@@ -56,6 +57,13 @@ in  λ ( params
                                   (   [ VFS.dir "pipes" [ VFS.leaf "pipe" ]
                                       , VFS.leaf "log"
                                       , VFS.leaf "null"
+                                      , VFS.leafAttrs
+                                          "terminal"
+                                          ( toMap
+                                              { name = "entropy"
+                                              , label = "entropy"
+                                              }
+                                          )
                                       , VFS.leaf "rtc"
                                       , VFS.leaf "zero"
                                       ]
@@ -101,7 +109,7 @@ in  λ ( params
                       , binary = "cached_fs_rom"
                       , provides = [ "ROM" ]
                       , resources = Genode.Init.Resources::{
-                        , ram = Genode.units.MiB 16
+                        , ram = Genode.units.MiB 32
                         }
                       , config = Init.Config::{
                         , policies =
@@ -129,7 +137,7 @@ in  λ ( params
                               , stdout = Some "/dev/log"
                               , stderr = Some "/dev/log"
                               , pipe = Some "/dev/pipes"
-                              , rng = Some "/dev/random"
+                              , rng = Some "/dev/entropy"
                               , rtc = Some "/dev/rtc"
                               , socket = Some "/dev/sockets"
                               , vfs = [ VFS.leaf "fs" ]

nixos-modules/systemd.nix

@@ -43,7 +43,6 @@ with lib; {
               libc
               posix
               vfs
-              vfs_jitterentropy
               vfs_pipe
             ];
           configFile = let

packages/genodelabs/depot-targets.nix

@@ -101,6 +101,10 @@ in {
   };
   ipxe_nic_drv.portInputs = with ports; [ dde_ipxe ];
   jbig2dec = { };
+  jitter_sponge = {
+    portInputs = with ports; [ jitterentropy xkcp ];
+    preConfigure = "cp -r ${self.worldSources} repos/world";
+  };
   jpeg = { };
   lan9118_nic_drv = { };
   libarchive = { };

packages/genodelabs/ports.nix

@@ -64,5 +64,11 @@ with pkgs;
     nativeBuildInputs = [ iasl libxslt unzip yasm ];
   };
   x86emu.hash = "sha256-QY6OL+cDVjQ67JItP1rS4ufPRGZf43AZtWxwza/0q0w=";
+  xkcp = {
+    extraRepos = [ genodePackages.worldSources ];
+    hash = "sha256-oB7oFikCFnEtB/ZlV7Gayw3wNa0BU/vi7O5gfzeFGLg=";
+    nativeBuildInputs = [ libxslt ];
+    version = "cafc03";
+  };
   zlib.hash = "sha256-j3JXN0f8thrPCvLhYHIPjbGa0t3iynQ/gO7KMlgljq0=";
 }