1 files changed, 127 insertions, 0 deletions

diff --git a/nixos/modules/services/ttys/agetty.nix b/nixos/modules/services/ttys/agetty.nix
new file mode 100644
index 00000000000..850f558e4cb
--- /dev/null
+++ b/nixos/modules/services/ttys/agetty.nix
@@ -0,0 +1,127 @@
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.mingetty = {
+
+      greetingLine = mkOption {
+        default = ''<<< Welcome to NixOS ${config.system.nixosVersion} (\m) - \l >>>'';
+        description = ''
+          Welcome line printed by mingetty.
+        '';
+      };
+
+      helpLine = mkOption {
+        default = "";
+        description = ''
+          Help line printed by mingetty below the welcome line.
+          Used by the installation CD to give some hints on
+          how to proceed.
+        '';
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = {
+
+    # FIXME: these are mostly copy/pasted from the systemd sources,
+    # which some small modifications, which is annoying.
+
+    # Generate a separate job for each tty.
+    systemd.units."getty@.service".text =
+      ''
+        [Unit]
+        Description=Getty on %I
+        Documentation=man:agetty(8)
+        After=systemd-user-sessions.service plymouth-quit-wait.service
+
+        # If additional gettys are spawned during boot then we should make
+        # sure that this is synchronized before getty.target, even though
+        # getty.target didn't actually pull it in.
+        Before=getty.target
+        IgnoreOnIsolate=yes
+
+        ConditionPathExists=/dev/tty0
+
+        [Service]
+        Environment=TERM=linux
+        Environment=LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
+        ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --noclear --login-program ${pkgs.shadow}/bin/login %I 38400
+        Type=idle
+        Restart=always
+        RestartSec=0
+        UtmpIdentifier=%I
+        TTYPath=/dev/%I
+        TTYReset=yes
+        TTYVHangup=yes
+        TTYVTDisallocate=yes # set to no to prevent clearing the screen
+        KillMode=process
+        IgnoreSIGPIPE=no
+
+        # Some login implementations ignore SIGTERM, so we send SIGHUP
+        # instead, to ensure that login terminates cleanly.
+        KillSignal=SIGHUP
+
+        X-RestartIfChanged=false
+      '';
+    
+    systemd.units."serial-getty@.service".text =
+      ''
+        [Unit]
+        Description=Serial Getty on %I
+        Documentation=man:agetty(8) man:systemd-getty-generator(8)
+        BindsTo=dev-%i.device
+        After=dev-%i.device systemd-user-sessions.service plymouth-quit-wait.service
+
+        # If additional gettys are spawned during boot then we should make
+        # sure that this is synchronized before getty.target, even though
+        # getty.target didn't actually pull it in.
+        Before=getty.target
+        IgnoreOnIsolate=yes
+
+        [Service]
+        Environment=TERM=linux
+        Environment=LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
+        ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I 115200,57600,38400,9600
+        Type=idle
+        Restart=always
+        RestartSec=0
+        UtmpIdentifier=%I
+        TTYPath=/dev/%I
+        TTYReset=yes
+        TTYVHangup=yes
+        KillMode=process
+        IgnoreSIGPIPE=no
+
+        # Some login implementations ignore SIGTERM, so we send SIGHUP
+        # instead, to ensure that login terminates cleanly.
+        KillSignal=SIGHUP
+        
+        X-RestartIfChanged=false
+      '';
+
+    environment.etc = singleton
+      { # Friendly greeting on the virtual consoles.
+        source = pkgs.writeText "issue" ''
+
+          ${config.services.mingetty.greetingLine}
+          ${config.services.mingetty.helpLine}
+
+        '';
+        target = "issue";
+      };
+
+  };
+
+}