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nixos/getty: add option to autologin once per boot

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rnhmjoj 2024-02-04 15:59:03 +01:00
parent 0b393b38ee
commit ae48df3ebb
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1 changed files with 28 additions and 4 deletions
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32
nixos/modules/services/ttys/getty.nix
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@ -7,14 +7,26 @@ let
baseArgs = [
"--login-program" "${cfg.loginProgram}"
] ++ optionals (cfg.autologinUser != null) [
] ++ optionals (cfg.autologinUser != null && !cfg.autologinOnce) [
"--autologin" cfg.autologinUser
] ++ optionals (cfg.loginOptions != null) [
"--login-options" cfg.loginOptions
] ++ cfg.extraArgs;
gettyCmd = args:
"@${pkgs.util-linux}/sbin/agetty agetty ${escapeShellArgs baseArgs} ${args}";
"${pkgs.util-linux}/sbin/agetty ${escapeShellArgs baseArgs} ${args}";
autologinScript = ''
otherArgs="--noclear --keep-baud $TTY 115200,38400,9600 $TERM";
${lib.optionalString cfg.autologinOnce ''
autologged="/run/agetty.autologged"
if test "$TTY" = tty1 && ! test -f "$autologged"; then
touch "$autologged"
exec ${gettyCmd "$otherArgs --autologin ${cfg.autologinUser}"}
fi
''}
exec ${gettyCmd "$otherArgs"}
'';
in
@ -40,6 +52,16 @@ in
'';
};
autologinOnce = mkOption {
type = types.bool;
default = false;
description = ''
If enabled the automatic login will only happen in the first tty
once per boot. This can be useful to avoid retyping the account
password on systems with full disk encrypted.
'';
};
loginProgram = mkOption {
type = types.path;
default = "${pkgs.shadow}/bin/login";
@ -106,9 +128,11 @@ in
systemd.services."getty@" =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud %I 115200,38400,9600 $TERM")
# override upstream default with an empty ExecStart
""
(pkgs.writers.writeDash "getty" autologinScript)
];
environment.TTY = "%I";
restartIfChanged = false;
};