* Option boot.initrd.postMountCommands to specify additional shell

commands for in stage 1 of the boot.

svn path=/nixos/branches/modular-nixos/; revision=15998

modules/system/boot/stage-1-init.sh

@@ -266,6 +266,9 @@ if test -n "@isLiveCD@"; then
 fi
 
 
+@postMountCommands@
+
+
 # Stop udevd.
 kill $(minips -C udevd -o pid=)
 

modules/system/boot/stage-1.nix

@@ -62,6 +62,15 @@ let
       '';
     };
 
+    boot.initrd.postMountCommands = mkOption {
+      default = "";
+      merge = pkgs.lib.mergeStringOption;
+      description = ''
+        Shell commands to be executed immediately after the stage 1
+        filesystems has been mounted.
+      '';
+    };
+
     fileSystems = mkOption {
       options.neededForBoot = mkOption {
         default = false;
@@ -223,7 +232,7 @@ let
     
     inherit (config.boot) isLiveCD resumeDevice;
 
-    inherit (config.boot.initrd) checkJournalingFS;
+    inherit (config.boot.initrd) checkJournalingFS postMountCommands;
 
     # !!! copy&pasted from upstart-jobs/filesystems.nix.
     mountPoints =