nixpkgs/modules/tasks/network-interfaces.nix
Eelco Dolstra c6c9304b95 * system/options.nix: gone :-)
svn path=/nixos/branches/modular-nixos/; revision=15772
2009-05-28 16:03:48 +00:00

170 lines
4.9 KiB
Nix

{pkgs, config, ...}:
let
inherit (pkgs.lib) mkOption;
###### interface
options = {
networking.hostName = mkOption {
default = "nixos";
description = "
The name of the machine. Leave it empty if you want to obtain
it from a DHCP server (if using DHCP).
";
};
networking.nativeIPv6 = mkOption {
default = false;
description = "
Whether to use IPv6 even though gw6c is not used. For example,
for Postfix.
";
};
networking.defaultGateway = mkOption {
default = "";
example = "131.211.84.1";
description = "
The default gateway. It can be left empty if it is auto-detected through DHCP.
";
};
networking.nameservers = mkOption {
default = [];
example = ["130.161.158.4" "130.161.33.17"];
description = "
The list of nameservers. It can be left empty if it is auto-detected through DHCP.
";
};
networking.domain = mkOption {
default = "";
example = "home";
description = "
The domain. It can be left empty if it is auto-detected through DHCP.
";
};
networking.localCommands = mkOption {
default = "";
example = "text=anything; echo You can put $text here.";
description = "
Shell commands to be executed at the end of the
<literal>network-interfaces</literal> Upstart job. Note that if
you are using DHCP to obtain the network configuration,
interfaces may not be fully configured yet.
";
};
};
###### implementation
inherit (pkgs) nettools wirelesstools bash writeText;
cfg = config.networking;
# !!! use XML
names = map (i: i.name) cfg.interfaces;
ipAddresses = map (i: if i ? ipAddress then i.ipAddress else "dhcp") cfg.interfaces;
subnetMasks = map (i: if i ? subnetMask then i.subnetMask else "default") cfg.interfaces;
essids = map (i: if i ? essid then i.essid else "default") cfg.interfaces;
wepKeys = map (i: if i ? wepKey then i.wepKey else "nokey") cfg.interfaces;
modprobe = config.system.sbin.modprobe;
in
{
require = [options];
services.extraJobs = [{
name = "network-interfaces";
job = ''
start on udev
stop on shutdown
start script
export PATH=${modprobe}/sbin:$PATH
modprobe af_packet || true
for i in $(cd /sys/class/net && ls -d *); do
echo "Bringing up network device $i..."
${nettools}/sbin/ifconfig $i up || true
done
# Configure the manually specified interfaces.
names=(${toString names})
ipAddresses=(${toString ipAddresses})
subnetMasks=(${toString subnetMasks})
essids=(${toString essids})
wepKeys=(${toString wepKeys})
for ((n = 0; n < ''${#names[*]}; n++)); do
name=''${names[$n]}
ipAddress=''${ipAddresses[$n]}
subnetMask=''${subnetMasks[$n]}
essid=''${essids[$n]}
wepKey=''${wepKeys[$n]}
# Set wireless networking stuff.
if test "$essid" != default; then
${wirelesstools}/sbin/iwconfig "$name" essid "$essid" || true
fi
if test "$wepKey" != nokey; then
${wirelesstools}/sbin/iwconfig "$name" key "$(cat "$wepKey")" || true
fi
# Set IP address / netmask.
if test "$ipAddress" != dhcp; then
echo "Configuring interface $name..."
extraFlags=
if test "$subnetMask" != default; then
extraFlags="$extraFlags netmask $subnetMask"
fi
${nettools}/sbin/ifconfig "$name" "$ipAddress" $extraFlags || true
fi
done
# Set the nameservers.
if test -n "${toString cfg.nameservers}"; then
rm -f /etc/resolv.conf
if test -n "${cfg.domain}"; then
echo "domain ${cfg.domain}" >> /etc/resolv.conf
fi
for i in ${toString cfg.nameservers}; do
echo "nameserver $i" >> /etc/resolv.conf
done
fi
# Set the default gateway.
if test -n "${cfg.defaultGateway}"; then
${nettools}/sbin/route add default gw "${cfg.defaultGateway}" || true
fi
# Run any user-specified commands.
${bash}/bin/sh ${writeText "local-net-cmds" cfg.localCommands} || true
end script
# Hack: Upstart doesn't yet support what we want: a service that
# doesn't have a running process associated with it.
respawn sleep 100000
stop script
for i in $(cd /sys/class/net && ls -d *); do
echo "Taking down network device $i..."
${nettools}/sbin/ifconfig $i down || true
done
end script
'';
}];
}