dotfiles/defaults/cifs-auth-fix/default.nix

37 lines
1.7 KiB
Nix

{ config, lib, pkgs, ... }:
{
# Remove this once https://github.com/NixOS/nixpkgs/issues/34638 is resolved
# The TL;DR is: the kernel calls out to the hard-coded path of
# /sbin/request-key as part of its CIFS auth process, which of course does
# not exist on NixOS due to the usage of Nix store paths.
system.activationScripts.symlink-requestkey = ''
if [ ! -d /sbin ]; then
mkdir /sbin
fi
ln -sfn /run/current-system/sw/bin/request-key /sbin/request-key
'';
# request-key expects a configuration file under /etc
environment.etc."request-key.conf" = {
text = let
upcall = "${pkgs.cifs-utils}/bin/cifs.upcall";
keyctl = "${pkgs.keyutils}/bin/keyctl";
in ''
#OP TYPE DESCRIPTION CALLOUT_INFO PROGRAM
# -t is required for DFS share servers...
create cifs.spnego * * ${upcall} -t %k
create dns_resolver * * ${upcall} %k
# Everything below this point is essentially the default configuration,
# modified minimally to work under NixOS. Notably, it provides debug
# logging.
create user debug:* negate ${keyctl} negate %k 30 %S
create user debug:* rejected ${keyctl} reject %k 30 %c %S
create user debug:* expired ${keyctl} reject %k 30 %c %S
create user debug:* revoked ${keyctl} reject %k 30 %c %S
create user debug:loop:* * |${pkgs.coreutils}/bin/cat
create user debug:* * ${pkgs.keyutils}/share/keyutils/request-key-debug.sh %k %d %c %S
negate * * * ${keyctl} negate %k 30 %S
'';
};
}