nixos/initrd-network: add new module
This commit is contained in:
parent
cdc7e23e38
commit
c81fb457c9
|
@ -436,6 +436,7 @@
|
||||||
./system/activation/top-level.nix
|
./system/activation/top-level.nix
|
||||||
./system/boot/coredump.nix
|
./system/boot/coredump.nix
|
||||||
./system/boot/emergency-mode.nix
|
./system/boot/emergency-mode.nix
|
||||||
|
./system/boot/initrd-network.nix
|
||||||
./system/boot/kernel.nix
|
./system/boot/kernel.nix
|
||||||
./system/boot/kexec.nix
|
./system/boot/kexec.nix
|
||||||
./system/boot/loader/efi.nix
|
./system/boot/loader/efi.nix
|
||||||
|
|
149
nixos/modules/system/boot/initrd-network.nix
Normal file
149
nixos/modules/system/boot/initrd-network.nix
Normal file
|
@ -0,0 +1,149 @@
|
||||||
|
{ config, lib, pkgs, ... }:
|
||||||
|
|
||||||
|
with lib;
|
||||||
|
|
||||||
|
let
|
||||||
|
cfg = config.boot.initrd.network;
|
||||||
|
|
||||||
|
in
|
||||||
|
{
|
||||||
|
|
||||||
|
options = {
|
||||||
|
|
||||||
|
boot.initrd.network.enable = mkOption {
|
||||||
|
type = types.bool;
|
||||||
|
default = false;
|
||||||
|
description = ''
|
||||||
|
Add network connectivity support to initrd.
|
||||||
|
|
||||||
|
Network options are configured via <literal>ip</literal> kernel
|
||||||
|
option, according to the kernel documentation.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.enable = mkOption {
|
||||||
|
type = types.bool;
|
||||||
|
default = false;
|
||||||
|
description = ''
|
||||||
|
Start SSH service during initrd boot. It can be used to debug failing
|
||||||
|
boot on a remote server, enter pasphrase for an encrypted partition etc.
|
||||||
|
Service is killed when stage-1 boot is finished.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.port = mkOption {
|
||||||
|
type = types.int;
|
||||||
|
default = 22;
|
||||||
|
description = ''
|
||||||
|
Port on which SSH initrd service should listen.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.shell = mkOption {
|
||||||
|
type = types.str;
|
||||||
|
default = "/bin/ash";
|
||||||
|
description = ''
|
||||||
|
Login shell of the remote user. Can be used to limit actions user can do.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.hostRSAKey = mkOption {
|
||||||
|
type = types.nullOr types.path;
|
||||||
|
default = null;
|
||||||
|
description = ''
|
||||||
|
RSA SSH private key file in the Dropbear format.
|
||||||
|
|
||||||
|
WARNING: This key is contained insecurely in the global Nix store. Do NOT
|
||||||
|
use your regular SSH host private keys for this purpose or you'll expose
|
||||||
|
them to regular users!
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.hostDSSKey = mkOption {
|
||||||
|
type = types.nullOr types.path;
|
||||||
|
default = null;
|
||||||
|
description = ''
|
||||||
|
DSS SSH private key file in the Dropbear format.
|
||||||
|
|
||||||
|
WARNING: This key is contained insecurely in the global Nix store. Do NOT
|
||||||
|
use your regular SSH host private keys for this purpose or you'll expose
|
||||||
|
them to regular users!
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.hostECDSAKey = mkOption {
|
||||||
|
type = types.nullOr types.path;
|
||||||
|
default = null;
|
||||||
|
description = ''
|
||||||
|
ECDSA SSH private key file in the Dropbear format.
|
||||||
|
|
||||||
|
WARNING: This key is contained insecurely in the global Nix store. Do NOT
|
||||||
|
use your regular SSH host private keys for this purpose or you'll expose
|
||||||
|
them to regular users!
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
boot.initrd.network.ssh.authorizedKeys = mkOption {
|
||||||
|
type = types.listOf types.str;
|
||||||
|
default = config.users.extraUsers.root.openssh.authorizedKeys.keys;
|
||||||
|
description = ''
|
||||||
|
Authorized keys for the root user on initrd.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
config = mkIf cfg.enable {
|
||||||
|
|
||||||
|
boot.initrd.kernelModules = [ "af_packet" ];
|
||||||
|
|
||||||
|
boot.initrd.extraUtilsCommands = ''
|
||||||
|
copy_bin_and_libs ${pkgs.mkinitcpio-nfs-utils}/bin/ipconfig
|
||||||
|
'' + optionalString cfg.ssh.enable ''
|
||||||
|
copy_bin_and_libs ${pkgs.dropbear}/bin/dropbear
|
||||||
|
|
||||||
|
cp -pv ${pkgs.glibc}/lib/libnss_files.so.* $out/lib
|
||||||
|
'';
|
||||||
|
|
||||||
|
boot.initrd.extraUtilsCommandsTest = optionalString cfg.ssh.enable ''
|
||||||
|
$out/bin/dropbear -V
|
||||||
|
'';
|
||||||
|
|
||||||
|
boot.initrd.postEarlyDeviceCommands = ''
|
||||||
|
# Search for interface definitions in command line
|
||||||
|
for o in $(cat /proc/cmdline); do
|
||||||
|
case $o in
|
||||||
|
ip=*)
|
||||||
|
ipconfig $o && hasNetwork=1
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
done
|
||||||
|
'' + optionalString cfg.ssh.enable ''
|
||||||
|
if [ -n "$hasNetwork" ]; then
|
||||||
|
mkdir /dev/pts
|
||||||
|
mount -t devpts devpts /dev/pts
|
||||||
|
|
||||||
|
mkdir -p /etc
|
||||||
|
echo 'root:x:0:0:root:/root:${cfg.ssh.shell}' > /etc/passwd
|
||||||
|
echo '${cfg.ssh.shell}' > /etc/shells
|
||||||
|
echo 'passwd: files' > /etc/nsswitch.conf
|
||||||
|
|
||||||
|
mkdir -p /var/log
|
||||||
|
touch /var/log/lastlog
|
||||||
|
|
||||||
|
mkdir -p /etc/dropbear
|
||||||
|
${optionalString (cfg.ssh.hostRSAKey != null) "ln -s ${cfg.ssh.hostRSAKey} /etc/dropbear/dropbear_rsa_host_key"}
|
||||||
|
${optionalString (cfg.ssh.hostDSSKey != null) "ln -s ${cfg.ssh.hostDSSKey} /etc/dropbear/dropbear_dss_host_key"}
|
||||||
|
${optionalString (cfg.ssh.hostECDSAKey != null) "ln -s ${cfg.ssh.hostECDSAKey} /etc/dropbear/dropbear_ecdsa_host_key"}
|
||||||
|
|
||||||
|
mkdir -p /root/.ssh
|
||||||
|
${concatStrings (map (key: ''
|
||||||
|
echo -n ${escapeShellArg key} >> /root/.ssh/authorized_keys
|
||||||
|
'') cfg.ssh.authorizedKeys)}
|
||||||
|
|
||||||
|
dropbear -s -j -k -E -m -p ${toString cfg.ssh.port}
|
||||||
|
fi
|
||||||
|
'';
|
||||||
|
|
||||||
|
};
|
||||||
|
}
|
Loading…
Reference in a new issue