141 lines
4 KiB
Nix
141 lines
4 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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{
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###### interface
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options = {
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services.mingetty = {
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greetingLine = mkOption {
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type = types.str;
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default = ''<<< Welcome to NixOS ${config.system.nixosVersion} (\m) - \l >>>'';
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description = ''
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Welcome line printed by mingetty.
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'';
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};
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helpLine = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Help line printed by mingetty below the welcome line.
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Used by the installation CD to give some hints on
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how to proceed.
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'';
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};
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serialSpeed = mkOption {
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type = types.listOf types.int;
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default = [ 115200 57600 38400 9600 ];
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example = [ 38400 9600 ];
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description = ''
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Bitrates to allow for agetty's listening on serial ports. Listing more
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bitrates gives more interoperability but at the cost of long delays
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for getting a sync on the line.
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'';
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};
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};
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};
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###### implementation
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config = {
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# FIXME: these are mostly copy/pasted from the systemd sources,
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# which some small modifications, which is annoying.
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# Generate a separate job for each tty.
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systemd.units."getty@.service".text =
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''
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[Unit]
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Description=Getty on %I
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Documentation=man:agetty(8)
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After=systemd-user-sessions.service plymouth-quit-wait.service
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# If additional gettys are spawned during boot then we should make
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# sure that this is synchronized before getty.target, even though
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# getty.target didn't actually pull it in.
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Before=getty.target
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IgnoreOnIsolate=yes
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ConditionPathExists=/dev/tty0
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[Service]
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Environment=TERM=linux
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Environment=LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
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ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --noclear --login-program ${pkgs.shadow}/bin/login %I 38400
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Type=idle
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Restart=always
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RestartSec=0
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UtmpIdentifier=%I
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TTYPath=/dev/%I
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TTYReset=yes
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TTYVHangup=yes
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TTYVTDisallocate=yes # set to no to prevent clearing the screen
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KillMode=process
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IgnoreSIGPIPE=no
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# Some login implementations ignore SIGTERM, so we send SIGHUP
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# instead, to ensure that login terminates cleanly.
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KillSignal=SIGHUP
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X-RestartIfChanged=false
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'';
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systemd.units."serial-getty@.service".text = let
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speeds = with pkgs.lib; concatStringsSep "," (map toString config.services.mingetty.serialSpeed);
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in ''
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[Unit]
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Description=Serial Getty on %I
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Documentation=man:agetty(8) man:systemd-getty-generator(8)
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BindsTo=dev-%i.device
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After=dev-%i.device systemd-user-sessions.service plymouth-quit-wait.service
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# If additional gettys are spawned during boot then we should make
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# sure that this is synchronized before getty.target, even though
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# getty.target didn't actually pull it in.
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Before=getty.target
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IgnoreOnIsolate=yes
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[Service]
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Environment=TERM=linux
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Environment=LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
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ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I ${speeds}
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Type=idle
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Restart=always
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RestartSec=0
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UtmpIdentifier=%I
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TTYPath=/dev/%I
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TTYReset=yes
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TTYVHangup=yes
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KillMode=process
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IgnoreSIGPIPE=no
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# Some login implementations ignore SIGTERM, so we send SIGHUP
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# instead, to ensure that login terminates cleanly.
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KillSignal=SIGHUP
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X-RestartIfChanged=false
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'';
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environment.etc = singleton
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{ # Friendly greeting on the virtual consoles.
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source = pkgs.writeText "issue" ''
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[1;32m${config.services.mingetty.greetingLine}[0m
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${config.services.mingetty.helpLine}
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'';
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target = "issue";
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};
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};
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}
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