2009-08-31 13:40:57 +00:00
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# This module allows the test driver to connect to the virtual machine
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# via a root shell attached to port 514.
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2020-08-18 10:24:02 +00:00
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{ options, config, lib, pkgs, ... }:
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2009-08-31 13:40:57 +00:00
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2014-04-14 14:26:48 +00:00
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with lib;
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2021-06-23 15:46:46 +00:00
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let
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qemu-common = import ../../lib/qemu-common.nix { inherit lib pkgs; };
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in
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2009-08-31 13:40:57 +00:00
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2017-11-08 17:03:59 +00:00
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{
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2009-08-31 13:40:57 +00:00
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2012-06-19 21:36:02 +00:00
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config = {
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2009-08-31 13:40:57 +00:00
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2013-01-16 11:33:18 +00:00
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systemd.services.backdoor =
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2012-06-19 21:36:02 +00:00
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{ wantedBy = [ "multi-user.target" ];
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2021-06-23 15:46:46 +00:00
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requires = [ "dev-hvc0.device" "dev-${qemu-common.qemuSerialDevice}.device" ];
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after = [ "dev-hvc0.device" "dev-${qemu-common.qemuSerialDevice}.device" ];
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2010-01-05 23:59:29 +00:00
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script =
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''
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2010-01-06 18:03:31 +00:00
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export USER=root
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2010-01-05 23:59:29 +00:00
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export HOME=/root
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2017-11-08 17:03:59 +00:00
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export DISPLAY=:0.0
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2016-02-23 10:53:08 +00:00
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2010-01-06 18:03:31 +00:00
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source /etc/profile
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2016-02-23 10:53:08 +00:00
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# Don't use a pager when executing backdoor
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# actions. Because we use a tty, commands like systemctl
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# or nix-store get confused into thinking they're running
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# interactively.
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export PAGER=
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2010-01-05 23:59:29 +00:00
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cd /tmp
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2013-07-16 13:04:32 +00:00
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exec < /dev/hvc0 > /dev/hvc0
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2021-06-23 15:46:46 +00:00
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while ! exec 2> /dev/${qemu-common.qemuSerialDevice}; do sleep 0.1; done
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2011-03-18 12:38:22 +00:00
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echo "connecting to host..." >&2
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2011-03-18 13:16:40 +00:00
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stty -F /dev/hvc0 raw -echo # prevent nl -> cr/nl conversion
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2012-06-22 19:37:22 +00:00
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echo
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2012-10-29 20:01:36 +00:00
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PS1= exec /bin/sh
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2010-01-05 23:59:29 +00:00
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'';
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2012-10-30 15:42:05 +00:00
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serviceConfig.KillSignal = "SIGHUP";
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2009-08-31 13:40:57 +00:00
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};
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2010-06-20 15:33:44 +00:00
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2018-01-30 09:28:26 +00:00
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# Prevent agetty from being instantiated on the serial device, since it
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# interferes with the backdoor (writes to it will randomly fail
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2012-11-09 10:45:37 +00:00
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# with EIO). Likewise for hvc0.
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2021-06-23 15:46:46 +00:00
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systemd.services."serial-getty@${qemu-common.qemuSerialDevice}".enable = false;
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2013-01-16 11:33:18 +00:00
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systemd.services."serial-getty@hvc0".enable = false;
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2012-10-29 20:01:36 +00:00
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2020-10-25 12:19:25 +00:00
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# Only set these settings when the options exist. Some tests (e.g. those
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# that do not specify any nodes, or an empty attr set as nodes) will not
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# have the QEMU module loaded and thuse these options can't and should not
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# be set.
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virtualisation = lib.optionalAttrs (options ? virtualisation.qemu) {
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qemu = {
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# Only use a serial console, no TTY.
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# NOTE: optionalAttrs
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# test-instrumentation.nix appears to be used without qemu-vm.nix, so
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# we avoid defining consoles if not possible.
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# TODO: refactor such that test-instrumentation can import qemu-vm
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# or declare virtualisation.qemu.console option in a module that's always imported
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2021-06-23 15:46:46 +00:00
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consoles = [ qemu-common.qemuSerialDevice ];
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2020-10-25 12:19:25 +00:00
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package = lib.mkDefault pkgs.qemu_test;
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};
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2020-10-21 11:02:09 +00:00
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};
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2018-05-10 06:10:19 +00:00
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2022-04-30 17:17:57 +00:00
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boot.kernel.sysctl = {
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"kernel.hung_task_timeout_secs" = 600;
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# Panic on out-of-memory conditions rather than letting the
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# OOM killer randomly get rid of processes, since this leads
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# to failures that are hard to diagnose.
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"vm.panic_on_oom" = lib.mkDefault 2;
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};
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2009-09-01 22:50:46 +00:00
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2022-04-30 17:17:57 +00:00
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boot.kernelParams = [
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"console=${qemu-common.qemuSerialDevice}"
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# Panic if an error occurs in stage 1 (rather than waiting for
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# user intervention).
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"panic=1" "boot.panic_on_fail"
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# Using acpi_pm as a clock source causes the guest clock to
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# slow down under high host load. This is usually a bad
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# thing, but for VM tests it should provide a bit more
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# determinism (e.g. if the VM runs at lower speed, then
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# timeouts in the VM should also be delayed).
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"clock=acpi_pm"
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];
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2010-01-05 23:38:13 +00:00
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# `xwininfo' is used by the test driver to query open windows.
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environment.systemPackages = [ pkgs.xorg.xwininfo ];
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2010-03-09 13:31:20 +00:00
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2012-07-19 21:32:50 +00:00
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# Log everything to the serial console.
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2014-08-06 11:54:17 +00:00
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services.journald.extraConfig =
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''
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ForwardToConsole=yes
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MaxLevelConsole=debug
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'';
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2022-12-20 23:44:39 +00:00
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boot.initrd.systemd.contents."/etc/systemd/journald.conf".text = ''
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[Journal]
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ForwardToConsole=yes
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MaxLevelConsole=debug
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'';
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2018-08-29 10:12:12 +00:00
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systemd.extraConfig = ''
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# Don't clobber the console with duplicate systemd messages.
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ShowStatus=no
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# Allow very slow start
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DefaultTimeoutStartSec=300
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'';
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2022-01-21 02:44:13 +00:00
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systemd.user.extraConfig = ''
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# Allow very slow start
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DefaultTimeoutStartSec=300
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'';
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2014-08-06 11:54:17 +00:00
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2022-12-20 23:44:39 +00:00
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boot.initrd.systemd.extraConfig = config.systemd.extraConfig;
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2014-08-06 11:54:17 +00:00
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boot.consoleLogLevel = 7;
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2010-09-13 17:36:01 +00:00
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2010-06-18 13:21:01 +00:00
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# Prevent tests from accessing the Internet.
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2010-09-13 18:19:15 +00:00
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networking.defaultGateway = mkOverride 150 "";
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networking.nameservers = mkOverride 150 [ ];
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2010-06-18 13:21:01 +00:00
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2012-08-06 12:13:06 +00:00
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system.requiredKernelConfig = with config.lib.kernelConfig; [
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(isYes "SERIAL_8250_CONSOLE")
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(isYes "SERIAL_8250")
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2012-08-07 21:04:00 +00:00
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(isEnabled "VIRTIO_CONSOLE")
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2012-08-06 12:13:06 +00:00
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];
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2012-08-20 15:27:38 +00:00
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2014-04-19 23:56:11 +00:00
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networking.usePredictableInterfaceNames = false;
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2014-08-06 11:55:02 +00:00
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# Make it easy to log in as root when running the test interactively.
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2018-06-29 23:58:35 +00:00
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users.users.root.initialHashedPassword = mkOverride 150 "";
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2014-08-06 11:55:02 +00:00
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2017-12-06 09:44:52 +00:00
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services.xserver.displayManager.job.logToJournal = true;
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2020-10-19 16:03:01 +00:00
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# Make sure we use the Guest Agent from the QEMU package for testing
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# to reduce the closure size required for the tests.
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services.qemuGuest.package = pkgs.qemu_test.ga;
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2021-05-24 14:08:40 +00:00
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# Squelch warning about unset system.stateVersion
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system.stateVersion = lib.mkDefault lib.trivial.release;
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2009-08-31 13:40:57 +00:00
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};
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}
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