102 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			102 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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  inInitrd = any (fs: fs == "nfs") config.boot.initrd.supportedFilesystems;
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  nfsStateDir = "/var/lib/nfs";
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  rpcMountpoint = "${nfsStateDir}/rpc_pipefs";
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  idmapdConfFile = pkgs.writeText "idmapd.conf" ''
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    [General]
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    Pipefs-Directory = ${rpcMountpoint}
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    ${optionalString (config.networking.domain != "")
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      "Domain = ${config.networking.domain}"}
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    [Mapping]
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    Nobody-User = nobody
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    Nobody-Group = nogroup
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    [Translation]
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    Method = nsswitch
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  '';
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in
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{
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  ###### implementation
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  config = mkIf (any (fs: fs == "nfs" || fs == "nfs4") config.boot.supportedFilesystems) {
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    services.rpcbind.enable = true;
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    system.fsPackages = [ pkgs.nfsUtils ];
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    boot.kernelModules = [ "sunrpc" ];
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    boot.initrd.kernelModules = mkIf inInitrd [ "nfs" ];
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    boot.initrd.extraUtilsCommands = mkIf inInitrd
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      ''
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        # !!! Uh, why don't we just install mount.nfs?
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        cp -v ${pkgs.klibc}/lib/klibc/bin.static/nfsmount $out/bin
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      '';
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    # Ensure that statd and idmapd are started before mountall.
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    jobs.mountall.preStart =
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      ''
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        ensure statd || true
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        ensure idmapd || true
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      '';
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    jobs.statd =
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      { description = "Kernel NFS server - Network Status Monitor";
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        path = [ pkgs.nfsUtils pkgs.sysvtools pkgs.utillinux ];
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        stopOn = ""; # needed during shutdown
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        preStart =
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          ''
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            ensure rpcbind
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            mkdir -p ${nfsStateDir}/sm
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            mkdir -p ${nfsStateDir}/sm.bak
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            sm-notify -d
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          '';
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        daemonType = "fork";
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        exec = "rpc.statd --no-notify";
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      };
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    jobs.idmapd =
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      { description = "NFS ID mapping daemon";
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        path = [ pkgs.nfsUtils pkgs.sysvtools pkgs.utillinux ];
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        startOn = "started udev";
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        preStart =
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          ''
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            ensure rpcbind
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            mkdir -p ${rpcMountpoint}
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            mount -t rpc_pipefs rpc_pipefs ${rpcMountpoint}
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          '';
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        postStop =
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          ''
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            umount ${rpcMountpoint}
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          '';
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        daemonType = "fork";
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        exec = "rpc.idmapd -v -c ${idmapdConfFile}";
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      };
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  };
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}
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