mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-24 06:31:02 +00:00
f6d8a96993
Commit 987aac7 and issue #18183 were intended to fix support for other
things, but in the process, changed mdns_minimal to use the wrong return
setting, resulting in permanent failures in early boot, affecting things
like issue #30459.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
104 lines
3.4 KiB
Nix
104 lines
3.4 KiB
Nix
# Configuration for the Name Service Switch (/etc/nsswitch.conf).
|
|
|
|
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
# only with nscd up and running we can load NSS modules that are not integrated in NSS
|
|
canLoadExternalModules = config.services.nscd.enable;
|
|
myhostname = canLoadExternalModules;
|
|
mymachines = canLoadExternalModules;
|
|
nssmdns = canLoadExternalModules && config.services.avahi.nssmdns;
|
|
nsswins = canLoadExternalModules && config.services.samba.nsswins;
|
|
ldap = canLoadExternalModules && (config.users.ldap.enable && config.users.ldap.nsswitch);
|
|
sssd = canLoadExternalModules && config.services.sssd.enable;
|
|
resolved = canLoadExternalModules && config.services.resolved.enable;
|
|
|
|
hostArray = [ "files" ]
|
|
++ optionals mymachines [ "mymachines" ]
|
|
++ optionals nssmdns [ "mdns_minimal [NOTFOUND=return]" ]
|
|
++ optionals nsswins [ "wins" ]
|
|
++ optionals resolved ["resolve [!UNAVAIL=return]"]
|
|
++ [ "dns" ]
|
|
++ optionals nssmdns [ "mdns" ]
|
|
++ optionals myhostname ["myhostname" ];
|
|
|
|
passwdArray = [ "files" ]
|
|
++ optional sssd "sss"
|
|
++ optionals ldap [ "ldap" ]
|
|
++ optionals mymachines [ "mymachines" ]
|
|
++ [ "systemd" ];
|
|
|
|
shadowArray = [ "files" ]
|
|
++ optional sssd "sss"
|
|
++ optionals ldap [ "ldap" ];
|
|
|
|
servicesArray = [ "files" ]
|
|
++ optional sssd "sss";
|
|
|
|
in {
|
|
options = {
|
|
|
|
# NSS modules. Hacky!
|
|
# Only works with nscd!
|
|
system.nssModules = mkOption {
|
|
type = types.listOf types.path;
|
|
internal = true;
|
|
default = [];
|
|
description = ''
|
|
Search path for NSS (Name Service Switch) modules. This allows
|
|
several DNS resolution methods to be specified via
|
|
<filename>/etc/nsswitch.conf</filename>.
|
|
'';
|
|
apply = list:
|
|
{
|
|
inherit list;
|
|
path = makeLibraryPath list;
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
config = {
|
|
assertions = [
|
|
{
|
|
# generic catch if the NixOS module adding to nssModules does not prevent it with specific message.
|
|
assertion = config.system.nssModules.path != "" -> canLoadExternalModules;
|
|
message = "Loading NSS modules from path ${config.system.nssModules.path} requires nscd being enabled.";
|
|
}
|
|
{
|
|
# resolved does not need to add to nssModules, therefore needs an extra assertion
|
|
assertion = resolved -> canLoadExternalModules;
|
|
message = "Loading systemd-resolved's nss-resolve NSS module requires nscd being enabled.";
|
|
}
|
|
];
|
|
|
|
# Name Service Switch configuration file. Required by the C
|
|
# library. !!! Factor out the mdns stuff. The avahi module
|
|
# should define an option used by this module.
|
|
environment.etc."nsswitch.conf".text = ''
|
|
passwd: ${concatStringsSep " " passwdArray}
|
|
group: ${concatStringsSep " " passwdArray}
|
|
shadow: ${concatStringsSep " " shadowArray}
|
|
|
|
hosts: ${concatStringsSep " " hostArray}
|
|
networks: files
|
|
|
|
ethers: files
|
|
services: ${concatStringsSep " " servicesArray}
|
|
protocols: files
|
|
rpc: files
|
|
'';
|
|
|
|
# Systemd provides nss-myhostname to ensure that our hostname
|
|
# always resolves to a valid IP address. It returns all locally
|
|
# configured IP addresses, or ::1 and 127.0.0.2 as
|
|
# fallbacks. Systemd also provides nss-mymachines to return IP
|
|
# addresses of local containers.
|
|
system.nssModules = optionals canLoadExternalModules [ config.systemd.package.out ];
|
|
|
|
};
|
|
}
|