42 lines
968 B
Nix
42 lines
968 B
Nix
# 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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{ config, pkgs, ... }:
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with pkgs.lib;
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{
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config = {
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jobs = singleton
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{ name = "backdoor";
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startOn = "network-interfaces";
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preStart =
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''
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eval $(cat /proc/cmdline)
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echo "guest running, will write in $hostTmpDir on host" > /dev/ttyS0
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touch /hostfs/$hostTmpDir/running
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'';
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exec = "${pkgs.socat}/bin/socat tcp-listen:514,fork exec:/bin/sh,stderr";
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};
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boot.postBootCommands =
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''
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( eval $(cat /proc/cmdline)
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mkdir /hostfs/$hostTmpDir/coverage-data
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ln -s /hostfs/$hostTmpDir/coverage-data /tmp/coverage-data
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)
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'';
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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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};
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}
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