Files

79 lines
3.2 KiB
Nix

{ config, pkgs, lib, ntfsplus, ... }:
# Builds and loads the ntfsplus kernel driver (github:namjaejeon/linux-ntfs),
# a maintained out-of-tree NTFS driver for Linux 6.1+.
#
# The upstream driver is used as-is, with two local patches applied on top
# (see ntfsplus-patches/). This avoids maintaining a fork that would need
# rebasing on every upstream update — patches are plain files that apply
# cleanly regardless of upstream churn.
#
# The ntfsplus flake's nixosModule is NOT used directly. It builds the kernel
# module as a `let` binding inside the module closure — not exposed as a
# package in its flake outputs — so there is nothing in pkgs to override.
# Replicating the module here is the only way to substitute a patched source.
#
# The ntfsplus flake (github:cmspam/ntfsplus-flake) is reused only for:
# - its linux-ntfs source input (ntfsplus.inputs.linux-ntfs)
# - its bundled Makefile (${ntfsplus}/Makefile)
# The flake ships its own Makefile because the upstream repo's Makefile
# has an ifneq KERNELRELEASE guard that breaks the out-of-tree nix build.
#
# The derivation is built inside this module (not via an overlay) so that
# config.boot.kernelPackages.kernel resolves to whatever kernel the host
# declares, with no extra indirection or per-host maintenance.
#
# ntfsplus is passed in via specialArgs in lib/mkNixosSystem.nix.
let
cfg = config.services.ntfsplus;
patchedSrc = pkgs.applyPatches {
name = "linux-ntfs-patched";
src = ntfsplus.inputs.linux-ntfs;
patches = [
# fsparam_flag → fsparam_bool so windows_names=0/1 is accepted as a
# mount option rather than being treated as a bare flag.
./ntfsplus-patches/0001-fix-windows_names-option.patch
# Gate the bad-character check behind NVolCheckWindowsNames so that
# the check only runs when windows_names is actually enabled.
./ntfsplus-patches/0002-gate-bad-character-check-by-windows_names.patch
];
};
ntfsplus-mod = pkgs.stdenv.mkDerivation {
pname = "ntfsplus-module";
version = ntfsplus.inputs.linux-ntfs.shortRev or ntfsplus.inputs.linux-ntfs.rev;
src = patchedSrc;
nativeBuildInputs = config.boot.kernelPackages.kernel.moduleBuildDependencies;
preBuild = "cp ${ntfsplus}/Makefile Makefile";
makeFlags = [
"KDIR=${config.boot.kernelPackages.kernel.dev}/lib/modules/${config.boot.kernelPackages.kernel.modDirVersion}/build"
"KVERSION=${config.boot.kernelPackages.kernel.modDirVersion}"
"CONFIG_NTFS_FS_POSIX_ACL=y"
];
installPhase = ''
mkdir -p $out/lib/modules/${config.boot.kernelPackages.kernel.modDirVersion}/extra
cp ntfs.ko $out/lib/modules/${config.boot.kernelPackages.kernel.modDirVersion}/extra/
'';
};
in
{
options.services.ntfsplus = {
enable = lib.mkEnableOption "ntfsplus kernel driver and utilities";
};
config = lib.mkIf cfg.enable {
boot.extraModulePackages = [ ntfsplus-mod ];
boot.kernelModules = [ "ntfs" ];
boot.extraModprobeConfig = ''
alias fs-ntfs ntfs
alias ntfsplus ntfs
'';
services.udev.extraRules = ''
SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="ntfs", ENV{ID_FS_TYPE}="ntfs"
'';
environment.systemPackages = [ pkgs.ntfsprogs-plus ];
};
}