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networkmanager,modemmanager: fix service symlinks for systemd v243 

Fixes problems such as:

systemd[1]: Failed to put bus name to hashmap: File exists
systemd[1]: dbus-org.freedesktop.nm-dispatcher.service: Two services allocated for the same bus name org.freedesktop.nm_dispatcher, refusing operation.

Problem is that systemd treats symlinks to files outside the service
path differently, causing our old workaround to look like two separate services.

These symlinks are intended to be a means for manually emulating
the behavior of the `Alias=` directive in these services.
Unfortunately even making these symlinks relative isn't enough,
since they don't make it to where it matters--
that only makes the links in /etc/static/systemd/system/*
relative, with systemd still being shown non-relative links
in /etc/systemd/system/*.

To fix this, drop all of this at the package level
and instead simply specify the aliases in the NixOS modules.

Also handle the same for modemmanager,
since the networkmanager NixOS module also handles that.
This commit is contained in:
Will Dietz 2019-09-13 11:11:53 -05:00
parent a412701c8d
commit f99bdb2b61
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GPG Key ID: EBB0EA4124809D02
3 changed files with 5 additions and 12 deletions
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5
nixos/modules/services/networking/networkmanager.nix
View File

@ -468,12 +468,16 @@ in {
mkdir -m 700 -p /etc/ipsec.d
mkdir -m 755 -p ${stateDirs}
'';
aliases = [ "dbus-org.freedesktop.NetworkManager.service" ];
};
systemd.services.NetworkManager-wait-online = {
wantedBy = [ "network-online.target" ];
};
systemd.services.ModemManager.aliases = [ "dbus-org.freedesktop.ModemManager1.service" ];
systemd.services.nm-setup-hostsdirs = mkIf dynamicHostsEnabled {
wantedBy = [ "NetworkManager.service" ];
before = [ "NetworkManager.service" ];
@ -495,6 +499,7 @@ in {
# useful binaries for user-specified hooks
path = [ pkgs.iproute pkgs.utillinux pkgs.coreutils ];
aliases = [ "dbus-org.freedesktop.nm-dispatcher.service" ];
};
# Turn off NixOS' network management when networking is managed entirely by NetworkManager

7
pkgs/tools/networking/modem-manager/default.nix
View File

@ -32,13 +32,6 @@ stdenv.mkDerivation rec {
doCheck = true;
postInstall = ''
# systemd in NixOS doesn't use `systemctl enable`, so we need to establish
# aliases ourselves.
ln -s $out/etc/systemd/system/ModemManager.service \
$out/etc/systemd/system/dbus-org.freedesktop.ModemManager1.service
'';
meta = with stdenv.lib; {
description = "WWAN modem manager, part of NetworkManager";
homepage = https://www.freedesktop.org/wiki/Software/ModemManager/;

5
pkgs/tools/networking/network-manager/default.nix
View File

@ -97,11 +97,6 @@ in stdenv.mkDerivation rec {
'';
postInstall = ''
# systemd in NixOS doesn't use `systemctl enable`, so we need to establish
# aliases ourselves.
ln -s $out/etc/systemd/system/NetworkManager-dispatcher.service $out/etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service
ln -s $out/etc/systemd/system/NetworkManager.service $out/etc/systemd/system/dbus-org.freedesktop.NetworkManager.service
# Add the legacy service name from before #51382 to prevent NetworkManager
# from not starting back up:
# TODO: remove this once 19.10 is released