2009-08-31 15:40:57 +02:00
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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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2014-04-14 16:26:48 +02:00
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{ config, lib, pkgs, ... }:
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2009-08-31 15:40:57 +02:00
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2014-04-14 16:26:48 +02:00
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with lib;
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2018-01-30 10:28:26 +01:00
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with import ../../lib/qemu-flags.nix { inherit pkgs; };
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2009-08-31 15:40:57 +02:00
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2017-11-24 13:31:50 +01:00
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let
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kernel = config.boot.kernelPackages.kernel;
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in
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2017-11-08 18:03:59 +01:00
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{
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2009-08-31 15:40:57 +02:00
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2016-12-15 21:00:21 +01:00
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# This option is a dummy that if used in conjunction with
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# modules/virtualisation/qemu-vm.nix gets merged with the same option defined
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# there and only is declared here because some modules use
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# test-instrumentation.nix but not qemu-vm.nix.
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#
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# One particular example are the boot tests where we want instrumentation
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# within the images but not other stuff like setting up 9p filesystems.
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options.virtualisation.qemu.program = mkOption { type = types.path; };
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2012-06-19 23:36:02 +02:00
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config = {
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2009-08-31 15:40:57 +02:00
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2013-01-16 12:33:18 +01:00
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systemd.services.backdoor =
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2012-06-19 23:36:02 +02:00
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{ wantedBy = [ "multi-user.target" ];
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2018-01-30 10:28:26 +01:00
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requires = [ "dev-hvc0.device" "dev-${qemuSerialDevice}.device" ];
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after = [ "dev-hvc0.device" "dev-${qemuSerialDevice}.device" ];
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2010-01-06 00:59:29 +01:00
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script =
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''
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2010-01-06 19:03:31 +01:00
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export USER=root
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2010-01-06 00:59:29 +01:00
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export HOME=/root
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2017-11-08 18:03:59 +01:00
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export DISPLAY=:0.0
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2016-02-23 11:53:08 +01:00
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2010-01-06 19:03:31 +01:00
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source /etc/profile
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2016-02-23 11:53:08 +01:00
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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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2010-01-06 00:59:29 +01:00
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cd /tmp
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2013-07-16 15:04:32 +02:00
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exec < /dev/hvc0 > /dev/hvc0
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2018-01-30 10:28:26 +01:00
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while ! exec 2> /dev/${qemuSerialDevice}; do sleep 0.1; done
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2011-03-18 13:38:22 +01:00
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echo "connecting to host..." >&2
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2011-03-18 14:16:40 +01:00
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stty -F /dev/hvc0 raw -echo # prevent nl -> cr/nl conversion
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2012-06-22 21:37:22 +02:00
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echo
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2012-10-29 21:01:36 +01:00
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PS1= exec /bin/sh
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2010-01-06 00:59:29 +01:00
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'';
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2012-10-30 16:42:05 +01:00
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serviceConfig.KillSignal = "SIGHUP";
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2009-08-31 15:40:57 +02:00
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};
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2010-06-20 17:33:44 +02:00
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2018-01-30 10:28:26 +01:00
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# Prevent agetty from being instantiated on the serial device, since it
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# interferes with the backdoor (writes to it will randomly fail
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2012-11-09 11:45:37 +01:00
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# with EIO). Likewise for hvc0.
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2018-01-30 10:28:26 +01:00
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systemd.services."serial-getty@${qemuSerialDevice}".enable = false;
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2013-01-16 12:33:18 +01:00
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systemd.services."serial-getty@hvc0".enable = false;
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2012-10-29 21:01:36 +01:00
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2016-01-04 16:53:42 +01:00
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boot.initrd.preDeviceCommands =
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''
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echo 600 > /proc/sys/kernel/hung_task_timeout_secs
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'';
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2011-01-10 15:22:38 +01:00
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boot.initrd.postDeviceCommands =
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''
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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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echo acpi_pm > /sys/devices/system/clocksource/clocksource0/current_clocksource
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'';
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2011-09-14 20:20:50 +02:00
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2009-08-31 15:40:57 +02:00
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boot.postBootCommands =
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''
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2010-01-04 10:51:57 +01:00
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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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echo 2 > /proc/sys/vm/panic_on_oom
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2011-08-09 16:07:44 +02:00
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|
# Coverage data is written into /tmp/coverage-data.
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|
mkdir -p /tmp/xchg/coverage-data
|
2009-08-31 15:40:57 +02:00
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'';
|
2009-09-02 00:50:46 +02:00
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|
# If the kernel has been built with coverage instrumentation, make
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# it available under /proc/gcov.
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|
boot.kernelModules = [ "gcov-proc" ];
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2010-01-04 19:04:57 +01:00
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|
# Panic if an error occurs in stage 1 (rather than waiting for
|
2011-09-14 20:20:50 +02:00
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|
# user intervention).
|
2010-01-06 22:16:57 +01:00
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|
|
boot.kernelParams =
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2018-01-30 10:28:26 +01:00
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|
|
[ "console=${qemuSerialDevice}" "panic=1" "boot.panic_on_fail" ];
|
2010-01-06 00:38:13 +01:00
|
|
|
|
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|
|
# `xwininfo' is used by the test driver to query open windows.
|
|
|
|
environment.systemPackages = [ pkgs.xorg.xwininfo ];
|
2010-03-09 14:31:20 +01:00
|
|
|
|
2012-07-19 23:32:50 +02:00
|
|
|
# Log everything to the serial console.
|
2014-08-06 13:54:17 +02:00
|
|
|
services.journald.extraConfig =
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|
|
|
''
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|
|
ForwardToConsole=yes
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|
|
MaxLevelConsole=debug
|
|
|
|
'';
|
|
|
|
|
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|
|
# Don't clobber the console with duplicate systemd messages.
|
|
|
|
systemd.extraConfig = "ShowStatus=no";
|
|
|
|
|
|
|
|
boot.consoleLogLevel = 7;
|
2010-09-13 19:36:01 +02:00
|
|
|
|
2010-06-18 15:21:01 +02:00
|
|
|
# Prevent tests from accessing the Internet.
|
2010-09-13 20:19:15 +02:00
|
|
|
networking.defaultGateway = mkOverride 150 "";
|
|
|
|
networking.nameservers = mkOverride 150 [ ];
|
2010-06-18 15:21:01 +02:00
|
|
|
|
2013-01-16 12:33:18 +01:00
|
|
|
systemd.globalEnvironment.GCOV_PREFIX = "/tmp/xchg/coverage-data";
|
2011-09-14 20:20:50 +02:00
|
|
|
|
2012-08-06 14:13:06 +02:00
|
|
|
system.requiredKernelConfig = with config.lib.kernelConfig; [
|
|
|
|
(isYes "SERIAL_8250_CONSOLE")
|
|
|
|
(isYes "SERIAL_8250")
|
2012-08-07 23:04:00 +02:00
|
|
|
(isEnabled "VIRTIO_CONSOLE")
|
2012-08-06 14:13:06 +02:00
|
|
|
];
|
2012-08-20 17:27:38 +02:00
|
|
|
|
2014-04-20 01:56:11 +02:00
|
|
|
networking.usePredictableInterfaceNames = false;
|
|
|
|
|
2014-08-06 13:55:02 +02:00
|
|
|
# Make it easy to log in as root when running the test interactively.
|
2014-11-04 05:19:07 +01:00
|
|
|
users.extraUsers.root.initialHashedPassword = mkOverride 150 "";
|
2014-08-06 13:55:02 +02:00
|
|
|
|
2017-12-06 10:44:52 +01:00
|
|
|
services.xserver.displayManager.job.logToJournal = true;
|
2009-08-31 15:40:57 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
}
|