Commit 69d79431 authored by Lily Foster's avatar Lily Foster
Browse files

nixos/systemd-stage-1: unify initrd fstab generation logic with system fstab

parent 0608bffd

nixos/modules/system/boot/systemd/initrd.nix

+0 −8
Original line number Diff line number Diff line
@@ -100,12 +100,6 @@ let 


  fileSystems = filter utils.fsNeededForBoot config.system.build.fileSystems;



  fstab = pkgs.writeText "initrd-fstab" (lib.concatMapStringsSep "\n"

    ({ fsType, mountPoint, device, options, autoFormat, autoResize, ... }@fs: let

        opts = options ++ optional autoFormat "x-systemd.makefs" ++ optional autoResize "x-systemd.growfs";

        finalDevice = if (lib.elem "bind" options) then "/sysroot${device}" else device;

      in "${finalDevice} /sysroot${mountPoint} ${fsType} ${lib.concatStringsSep "," opts}") fileSystems);



  needMakefs = lib.any (fs: fs.autoFormat) fileSystems;

  needGrowfs = lib.any (fs: fs.autoResize) fileSystems;
@@ -354,8 +348,6 @@ in { 
          DefaultEnvironment=PATH=/bin:/sbin ${optionalString (isBool cfg.emergencyAccess && cfg.emergencyAccess) "SYSTEMD_SULOGIN_FORCE=1"}

        '';



        "/etc/fstab".source = fstab;



        "/lib/modules".source = "${modulesClosure}/lib/modules";

        "/lib/firmware".source = "${modulesClosure}/lib/firmware";

nixos/modules/tasks/filesystems.nix

+31 −17
Original line number Diff line number Diff line
@@ -153,6 +153,34 @@ let 
      specialMount "${mount.device}" "${mount.mountPoint}" "${concatStringsSep "," mount.options}" "${mount.fsType}"

    '') mounts);



  makeFstabEntries =

    let

      fsToSkipCheck = [ "none" "bindfs" "btrfs" "zfs" "tmpfs" "nfs" "vboxsf" "glusterfs" "apfs" "9p" "cifs" "prl_fs" "vmhgfs" ];

      isBindMount = fs: builtins.elem "bind" fs.options;

      skipCheck = fs: fs.noCheck || fs.device == "none" || builtins.elem fs.fsType fsToSkipCheck || isBindMount fs;

      # https://wiki.archlinux.org/index.php/fstab#Filepath_spaces

      escape = string: builtins.replaceStrings [ " " "\t" ] [ "\\040" "\\011" ] string;

    in fstabFileSystems: { rootPrefix ? "", excludeChecks ? false, extraOpts ? (fs: []) }: concatMapStrings (fs:

      (optionalString (isBindMount fs) (escape rootPrefix))

      + (if fs.device != null then escape fs.device

         else if fs.label != null then "/dev/disk/by-label/${escape fs.label}"

         else throw "No device specified for mount point ‘${fs.mountPoint}’.")

      + " " + escape (rootPrefix + fs.mountPoint)

      + " " + fs.fsType

      + " " + builtins.concatStringsSep "," (fs.options ++ (extraOpts fs))

      + " " + (optionalString (!excludeChecks)

        ("0 " + (if skipCheck fs then "0" else if fs.mountPoint == "/" then "1" else "2")))

      + "\n"

    ) fstabFileSystems;



    initrdFstab = pkgs.writeText "initrd-fstab" (makeFstabEntries (filter utils.fsNeededForBoot fileSystems) {

      rootPrefix = "/sysroot";

      excludeChecks = true;

      extraOpts = fs:

        (optional fs.autoResize "x-systemd.growfs")

        ++ (optional fs.autoFormat "x-systemd.makefs");

    });



in



{
@@ -279,11 +307,6 @@ in 


    environment.etc.fstab.text =

      let

        fsToSkipCheck = [ "none" "bindfs" "btrfs" "zfs" "tmpfs" "nfs" "vboxsf" "glusterfs" "apfs" "9p" "cifs" "prl_fs" "vmhgfs" ];

        isBindMount = fs: builtins.elem "bind" fs.options;

        skipCheck = fs: fs.noCheck || fs.device == "none" || builtins.elem fs.fsType fsToSkipCheck || isBindMount fs;

        # https://wiki.archlinux.org/index.php/fstab#Filepath_spaces

        escape = string: builtins.replaceStrings [ " " "\t" ] [ "\\040" "\\011" ] string;

        swapOptions = sw: concatStringsSep "," (

          sw.options

          ++ optional (sw.priority != null) "pri=${toString sw.priority}"
@@ -298,18 +321,7 @@ in 
        # <file system> <mount point>   <type>  <options>       <dump>  <pass>



        # Filesystems.

        ${concatMapStrings (fs:

            (if fs.device != null then escape fs.device

             else if fs.label != null then "/dev/disk/by-label/${escape fs.label}"

             else throw "No device specified for mount point ‘${fs.mountPoint}’.")

            + " " + escape fs.mountPoint

            + " " + fs.fsType

            + " " + builtins.concatStringsSep "," fs.options

            + " 0"

            + " " + (if skipCheck fs then "0" else

                     if fs.mountPoint == "/" then "1" else "2")

            + "\n"

        ) fileSystems}

        ${makeFstabEntries fileSystems {}}



        # Swap devices.

        ${flip concatMapStrings config.swapDevices (sw:
@@ -317,6 +329,8 @@ in 
        )}

      '';



    boot.initrd.systemd.contents."/etc/fstab".source = initrdFstab;



    # Provide a target that pulls in all filesystems.

    systemd.targets.fs =

      { description = "All File Systems";