public/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nixos/qemu: Deduplicate QEMU serialDevice into qemu-flags.nix

Browse Source
This commit is contained in:
Tuomas Tynkkynen
2018-01-30 16:57:27 +02:00
parent 1ce1380497
commit 8e83158f12
3 changed files with 14 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
nixos/modules/testing/test-instrumentation.nix
+8 -11
View File
@@ -4,13 +4,10 @@
{ config, lib, pkgs, ... }:
with lib;
with import ../../lib/qemu-flags.nix { inherit pkgs; };
let
kernel = config.boot.kernelPackages.kernel;
# FIXME: figure out a common place for this instead of copy pasting
serialDevice = if pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64 then "ttyS0"
else if pkgs.stdenv.isArm || pkgs.stdenv.isAarch64 then "ttyAMA0"
else throw "Unknown QEMU serial device for system '${pkgs.stdenv.system}'";
in
{
@@ -28,8 +25,8 @@ in
systemd.services.backdoor =
{ wantedBy = [ "multi-user.target" ];
requires = [ "dev-hvc0.device" "dev-${serialDevice}.device" ];
after = [ "dev-hvc0.device" "dev-${serialDevice}.device" ];
requires = [ "dev-hvc0.device" "dev-${qemuSerialDevice}.device" ];
after = [ "dev-hvc0.device" "dev-${qemuSerialDevice}.device" ];
script =
''
export USER=root
@@ -46,7 +43,7 @@ in
cd /tmp
exec < /dev/hvc0 > /dev/hvc0
while ! exec 2> /dev/${serialDevice}; do sleep 0.1; done
while ! exec 2> /dev/${qemuSerialDevice}; do sleep 0.1; done
echo "connecting to host..." >&2
stty -F /dev/hvc0 raw -echo # prevent nl -> cr/nl conversion
echo
@@ -55,10 +52,10 @@ in
serviceConfig.KillSignal = "SIGHUP";
};
# Prevent agetty from being instantiated on ${serialDevice}, since it
# interferes with the backdoor (writes to ${serialDevice} will randomly fail
# Prevent agetty from being instantiated on the serial device, since it
# interferes with the backdoor (writes to it will randomly fail
# with EIO). Likewise for hvc0.
systemd.services."serial-getty@${serialDevice}".enable = false;
systemd.services."serial-getty@${qemuSerialDevice}".enable = false;
systemd.services."serial-getty@hvc0".enable = false;
boot.initrd.preDeviceCommands =
@@ -94,7 +91,7 @@ in
# Panic if an error occurs in stage 1 (rather than waiting for
# user intervention).
boot.kernelParams =
[ "console=${serialDevice}" "panic=1" "boot.panic_on_fail" ];
[ "console=${qemuSerialDevice}" "panic=1" "boot.panic_on_fail" ];
# `xwininfo' is used by the test driver to query open windows.
environment.systemPackages = [ pkgs.xorg.xwininfo ];