diff options
Diffstat (limited to 'nixos/modules/system/activation/switch-to-configuration.pl')
| -rw-r--r-- | nixos/modules/system/activation/switch-to-configuration.pl | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/nixos/modules/system/activation/switch-to-configuration.pl b/nixos/modules/system/activation/switch-to-configuration.pl index a67a9b05778..d83198bc346 100644 --- a/nixos/modules/system/activation/switch-to-configuration.pl +++ b/nixos/modules/system/activation/switch-to-configuration.pl @@ -104,6 +104,19 @@ sub getActiveUnits { return $res; } +# Returns whether a systemd unit is active +sub unit_is_active { + my ($unit_name) = @_; + + my $mgr = Net::DBus->system->get_service('org.freedesktop.systemd1')->get_object('/org/freedesktop/systemd1'); + my $units = $mgr->ListUnitsByNames([$unit_name]); + if (@{$units} == 0) { + return 0; + } + my $active_state = $units->[0]->[3]; ## no critic (ValuesAndExpressions::ProhibitMagicNumbers) + return $active_state eq 'active' || $active_state eq 'activating'; +} + sub parseFstab { my ($filename) = @_; my ($fss, $swaps); @@ -744,6 +757,24 @@ close $listActiveUsers; print STDERR "setting up tmpfiles\n"; system("@systemd@/bin/systemd-tmpfiles", "--create", "--remove", "--exclude-prefix=/dev") == 0 or $res = 3; +# Before reloading we need to ensure that the units are still active. They may have been +# deactivated because one of their requirements got stopped. If they are inactive +# but should have been reloaded, the user probably expects them to be started. +if (scalar(keys %unitsToReload) > 0) { + for my $unit (keys %unitsToReload) { + if (!unit_is_active($unit)) { + # Figure out if we need to start the unit + my %unit_info = parse_unit("$out/etc/systemd/system/$unit"); + if (!(parseSystemdBool(\%unit_info, 'Unit', 'RefuseManualStart', 0) || parseSystemdBool(\%unit_info, 'Unit', 'X-OnlyManualStart', 0))) { + $unitsToStart{$unit} = 1; + recordUnit($startListFile, $unit); + } + # Don't reload the unit, reloading would fail + delete %unitsToReload{$unit}; + unrecord_unit($reloadListFile, $unit); + } + } +} # Reload units that need it. This includes remounting changed mount # units. if (scalar(keys %unitsToReload) > 0) { |