mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-25 07:00:43 +00:00
104 lines
2.4 KiB
Nix
104 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
cfg = config.boot.initrd.network;
|
|
|
|
udhcpcScript = pkgs.writeScript "udhcp-script"
|
|
''
|
|
#! /bin/sh
|
|
if [ "$1" = bound ]; then
|
|
ip address add "$ip/$mask" dev "$interface"
|
|
if [ -n "$router" ]; then
|
|
ip route add default via "$router" dev "$interface"
|
|
fi
|
|
if [ -n "$dns" ]; then
|
|
rm -f /etc/resolv.conf
|
|
for i in $dns; do
|
|
echo "nameserver $dns" >> /etc/resolv.conf
|
|
done
|
|
fi
|
|
fi
|
|
'';
|
|
|
|
in
|
|
|
|
{
|
|
|
|
options = {
|
|
|
|
boot.initrd.network.enable = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Add network connectivity support to initrd. The network may be
|
|
configured using the <literal>ip</literal> kernel parameter,
|
|
as described in <link
|
|
xlink:href="https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt">the
|
|
kernel documentation</link>. Otherwise, if
|
|
<option>networking.useDHCP</option> is enabled, an IP address
|
|
is acquired using DHCP.
|
|
'';
|
|
};
|
|
|
|
boot.initrd.network.postCommands = mkOption {
|
|
default = "";
|
|
type = types.lines;
|
|
description = ''
|
|
Shell commands to be executed after stage 1 of the
|
|
boot has initialised the network.
|
|
'';
|
|
};
|
|
|
|
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
boot.initrd.kernelModules = [ "af_packet" ];
|
|
|
|
boot.initrd.extraUtilsCommands = ''
|
|
copy_bin_and_libs ${pkgs.mkinitcpio-nfs-utils}/bin/ipconfig
|
|
'';
|
|
|
|
boot.initrd.preLVMCommands = mkBefore (
|
|
# Search for interface definitions in command line.
|
|
''
|
|
for o in $(cat /proc/cmdline); do
|
|
case $o in
|
|
ip=*)
|
|
ipconfig $o && hasNetwork=1
|
|
;;
|
|
esac
|
|
done
|
|
''
|
|
|
|
# Otherwise, use DHCP.
|
|
+ optionalString config.networking.useDHCP ''
|
|
if [ -z "$hasNetwork" ]; then
|
|
|
|
# Bring up all interfaces.
|
|
for iface in $(cd /sys/class/net && ls); do
|
|
echo "bringing up network interface $iface..."
|
|
ip link set "$iface" up
|
|
done
|
|
|
|
# Acquire a DHCP lease.
|
|
echo "acquiring IP address via DHCP..."
|
|
udhcpc --quit --now --script ${udhcpcScript} && hasNetwork=1
|
|
fi
|
|
''
|
|
|
|
+ ''
|
|
if [ -n "$hasNetwork" ]; then
|
|
echo "networking is up!"
|
|
${cfg.postCommands}
|
|
fi
|
|
'');
|
|
|
|
};
|
|
|
|
}
|