1
0
Fork 1
mirror of https://github.com/NixOS/nixpkgs.git synced 2024-12-09 05:53:50 +00:00
nixpkgs/nixos/modules/services/ttys/getty.nix
Alyssa Ross 8694e7de25 nixos/getty: add services.getty.loginOptions
This corresponds to agetty's --login-options argument.

With this change, I can set

    services.getty.autologinUser = "qyliss";
    services.getty.loginOptions = "-- \\u";

and have my username prefilled, but with my password still
required (unlike the normal autologinUser behaviour).
2021-01-08 13:55:25 +00:00

149 lines
4.1 KiB
Nix
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.getty;
loginArgs = [
"--login-program" "${pkgs.shadow}/bin/login"
] ++ optionals (cfg.autologinUser != null) [
"--autologin" cfg.autologinUser
] ++ optionals (cfg.loginOptions != null) [
"--login-options" cfg.loginOptions
];
gettyCmd = extraArgs:
"@${pkgs.util-linux}/sbin/agetty agetty ${escapeShellArgs loginArgs} "
+ extraArgs;
in
{
###### interface
imports = [
(mkRenamedOptionModule [ "services" "mingetty" ] [ "services" "getty" ])
];
options = {
services.getty = {
autologinUser = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Username of the account that will be automatically logged in at the console.
If unspecified, a login prompt is shown as usual.
'';
};
loginOptions = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Template for arguments to be passed to
<citerefentry><refentrytitle>login</refentrytitle>
<manvolnum>1</manvolnum></citerefentry>.
See <citerefentry><refentrytitle>agetty</refentrytitle>
<manvolnum>1</manvolnum></citerefentry> for details,
including security considerations. If unspecified, agetty
will not be invoked with a <option>--login-options</option>
option.
'';
example = "-h darkstar -- \u";
};
greetingLine = mkOption {
type = types.str;
description = ''
Welcome line printed by agetty.
The default shows current NixOS version label, machine type and tty.
'';
};
helpLine = mkOption {
type = types.lines;
default = "";
description = ''
Help line printed by agetty below the welcome line.
Used by the installation CD to give some hints on
how to proceed.
'';
};
serialSpeed = mkOption {
type = types.listOf types.int;
default = [ 115200 57600 38400 9600 ];
example = [ 38400 9600 ];
description = ''
Bitrates to allow for agetty's listening on serial ports. Listing more
bitrates gives more interoperability but at the cost of long delays
for getting a sync on the line.
'';
};
};
};
###### implementation
config = {
# Note: this is set here rather than up there so that changing
# nixos.label would not rebuild manual pages
services.getty.greetingLine = mkDefault ''<<< Welcome to NixOS ${config.system.nixos.label} (\m) - \l >>>'';
systemd.services."getty@" =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud %I 115200,38400,9600 $TERM")
];
restartIfChanged = false;
};
systemd.services."serial-getty@" =
let speeds = concatStringsSep "," (map toString config.services.getty.serialSpeed); in
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "%I ${speeds} $TERM")
];
restartIfChanged = false;
};
systemd.services."container-getty@" =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud pts/%I 115200,38400,9600 $TERM")
];
restartIfChanged = false;
};
systemd.services.console-getty =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud console 115200,38400,9600 $TERM")
];
serviceConfig.Restart = "always";
restartIfChanged = false;
enable = mkDefault config.boot.isContainer;
};
environment.etc.issue =
{ # Friendly greeting on the virtual consoles.
source = pkgs.writeText "issue" ''
${config.services.getty.greetingLine}
${config.services.getty.helpLine}
'';
};
};
}