nixpkgs/nixos/modules/virtualisation/container-config.nix
Eelco Dolstra 1ad9a654be Make starting a container synchronous
So now "systemctl start container@foo" will only return after the
container has reached multi-user.target.
2014-04-03 16:36:23 +02:00

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{ config, pkgs, lib, ... }:
with lib;
{
config = mkIf config.boot.isContainer {
# Provide a login prompt on /var/lib/login.socket. On the host,
# you can connect to it by running socat
# unix:<path-to-container>/var/lib/login.socket -,echo=0,raw.
systemd.sockets.login =
{ description = "Login Socket";
wantedBy = [ "sockets.target" ];
socketConfig =
{ ListenStream = "/var/lib/login.socket";
SocketMode = "0666";
Accept = true;
};
};
systemd.services."login@" =
{ description = "Login %i";
environment.TERM = "linux";
serviceConfig =
{ Type = "simple";
StandardInput = "socket";
ExecStart = "${pkgs.socat}/bin/socat -t0 - exec:${pkgs.shadow}/bin/login,pty,setsid,setpgid,stderr,ctty";
TimeoutStopSec = 1; # FIXME
};
};
# Provide a non-interactive login root shell on
# /var/lib/root-shell.socket. On the host, you can connect to it
# by running socat unix:<path-to-container>/var/lib/root-shell.socket -.
systemd.sockets.root-shell =
{ description = "Root Shell Socket";
wantedBy = [ "sockets.target" ];
socketConfig =
{ ListenStream = "/var/lib/root-shell.socket";
SocketMode = "0600"; # only root can connect, obviously
Accept = true;
};
};
systemd.services."root-shell@" =
{ description = "Root Shell %i";
serviceConfig =
{ Type = "simple";
StandardInput = "socket";
ExecStart = "${pkgs.bash}/bin/bash --login";
TimeoutStopSec = 1; # FIXME
};
};
systemd.services.container-startup-done =
{ description = "Container Startup Notification";
wantedBy = [ "multi-user.target" ];
after = [ "multi-user.target" ];
script =
''
if [ -p /var/lib/startup-done ]; then
echo done > /var/lib/startup-done
fi
'';
serviceConfig.Type = "oneshot";
serviceConfig.RemainAfterExit = true;
};
};
}