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nix-scripts/artiq-fast/wfvm/qemu.nix

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2020-06-11 16:22:35 +08:00
{ pkgs
, qemuMem
, sshUser ? "user"
, sshPassword ? "user"
,
}:
with pkgs;
let
qemu-img = "${qemu_kvm}/bin/qemu-img";
runQemu = isolateNetwork: forwardedPorts: extraArgs:
let
restrict =
if isolateNetwork
then "on"
else "off";
# use socat instead of `tcp:…` to allow multiple connections
guestfwds =
builtins.concatStringsSep ""
(
map (
{ listenAddr, targetAddr, port }:
",guestfwd=tcp:${listenAddr}:${toString port}-cmd:${socat}/bin/socat\\ -\\ tcp:${targetAddr}:${toString port}"
) forwardedPorts
);
args = [
"-enable-kvm"
"-m"
qemuMem
"-bios"
"${OVMF.fd}/FV/OVMF.fd"
"-netdev"
"user,id=n1,net=192.168.1.0/24,restrict=${restrict},hostfwd=tcp::2022-:22${guestfwds}"
"-device"
"e1000,netdev=n1"
];
argStr = builtins.concatStringsSep " " (args ++ extraArgs);
in
"${qemu_kvm}/bin/qemu-system-x86_64 ${argStr}";
# Pass empty config file to prevent ssh from failing to create ~/.ssh
sshOpts = "-F /dev/null -o StrictHostKeyChecking=accept-new -o UserKnownHostsFile=\$TMP/known_hosts";
sshWithQuotes = quotes: cmd: ''
echo ssh windows ${quotes}${cmd}${quotes}
${sshpass}/bin/sshpass -p${sshPassword} -- \
${openssh}/bin/ssh -np 2022 ${sshOpts} \
${sshUser}@localhost \
${quotes}${cmd}${quotes}
'';
ssh = sshWithQuotes "'";
scp = src: target: ''
echo "Copy ${src} to ${target}"
${sshpass}/bin/sshpass -p${sshPassword} -- \
${openssh}/bin/scp -P 2022 ${sshOpts} \
"${src}" "${sshUser}@localhost:${target}"
'';
in
{
inherit qemu-img runQemu ssh sshWithQuotes scp;
inputs = [ qemu_kvm openssh sshpass ];
}