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nixos/system: make switch-to-configuration script pure.

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Fixes #28443

Fixed few invocations to `systemctl` to have an absolute path. Additionally add
LOCALE_ARCHIVE so that perl stops spewing warning messages.
This commit is contained in:
Gleb Peregud 2017-11-18 23:33:24 +01:00
parent f1caf10ec9
commit 2f6148c743
3 changed files with 36 additions and 4 deletions
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13
nixos/modules/system/activation/switch-to-configuration.pl
View file

@ -16,6 +16,10 @@ my $reloadListFile = "/run/systemd/reload-list";
my $action = shift @ARGV;
if ("@localeArchive@" ne "") {
$ENV{LOCALE_ARCHIVE} = "@localeArchive@";
}
if (!defined $action || ($action ne "switch" && $action ne "boot" && $action ne "test" && $action ne "dry-activate")) {
print STDERR <<EOF;
Usage: $0 [switch|boot|test]
@ -65,7 +69,8 @@ $SIG{PIPE} = "IGNORE";
sub getActiveUnits {
# FIXME: use D-Bus or whatever to query this, since parsing the
# output of list-units is likely to break.
my $lines = `LANG= systemctl list-units --full --no-legend`;
# Use current version of systemctl binary before daemon is reexeced.
my $lines = `LANG= /run/current-system/sw/bin/systemctl list-units --full --no-legend`;
my $res = {};
foreach my $line (split '\n', $lines) {
chomp $line;
@ -262,7 +267,8 @@ while (my ($unit, $state) = each %{$activePrev}) {
sub pathToUnitName {
my ($path) = @_;
open my $cmd, "-|", "@systemd@/bin/systemd-escape", "--suffix=mount", "-p", $path
# Use current version of systemctl binary before daemon is reexeced.
open my $cmd, "-|", "/run/current-system/sw/bin/systemd-escape", "--suffix=mount", "-p", $path
or die "Unable to escape $path!\n";
my $escaped = join "", <$cmd>;
chomp $escaped;
@ -364,7 +370,8 @@ syslog(LOG_NOTICE, "switching to system configuration $out");
if (scalar (keys %unitsToStop) > 0) {
print STDERR "stopping the following units: ", join(", ", @unitsToStopFiltered), "\n"
if scalar @unitsToStopFiltered;
system("systemctl", "stop", "--", sort(keys %unitsToStop)); # FIXME: ignore errors?
# Use current version of systemctl binary before daemon is reexeced.
system("/run/current-system/sw/bin/systemctl", "stop", "--", sort(keys %unitsToStop)); # FIXME: ignore errors?
}
print STDERR "NOT restarting the following changed units: ", join(", ", sort(keys %unitsToSkip)), "\n"

2
nixos/modules/system/activation/top-level.nix
View file

@ -26,7 +26,6 @@ let
cloner false config.nesting.children
++ cloner true config.nesting.clone;
systemBuilder =
let
kernelPath = "${config.boot.kernelPackages.kernel}/" +
@ -83,6 +82,7 @@ let
done
mkdir $out/bin
export localeArchive="${config.i18n.glibcLocales}/lib/locale/locale-archive"
substituteAll ${./switch-to-configuration.pl} $out/bin/switch-to-configuration
chmod +x $out/bin/switch-to-configuration

25
nixos/tests/switch-test.nix Normal file
View file

@ -0,0 +1,25 @@
# Test configuration switching.
import ./make-test.nix ({ pkgs, ...} : {
name = "switch-test";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ gleber ];
};
nodes = {
machine = { config, lib, pkgs, ... }: {
users.mutableUsers = false;
};
other = { config, lib, pkgs, ... }: {
users.mutableUsers = true;
};
};
testScript = {nodes, ...}: let
originalSystem = nodes.machine.config.system.build.toplevel;
otherSystem = nodes.other.config.system.build.toplevel;
in ''
$machine->succeed("env -i ${originalSystem}/bin/switch-to-configuration test | tee /dev/stderr");
$machine->succeed("env -i ${otherSystem}/bin/switch-to-configuration test | tee /dev/stderr");
'';
})