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* dhcpcd: use a configuration file. Use the "denyinterfaces" option

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to simplify the start script.  Drop the ifplugd hook because dhcpcd
  monitors interface link status itself.

svn path=/nixos/trunk/; revision=32424
This commit is contained in:
Eelco Dolstra 2012-02-20 13:13:29 +00:00
parent ae27eafe4c
commit 1770b5a400
1 changed files with 25 additions and 34 deletions
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59
modules/services/networking/dhcpcd.nix
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@ -12,6 +12,29 @@ let
map (i: i.name) (filter (i: i ? ipAddress && i.ipAddress != "" ) config.networking.interfaces)
++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bridges));
# Config file adapted from the one that ships with dhcpcd.
dhcpcdConf = pkgs.writeText "dhcpcd.conf"
''
# Inform the DHCP server of our hostname for DDNS.
hostname
# A list of options to request from the DHCP server.
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes, ntp_servers, interface_mtu
# A ServerID is required by RFC2131.
require dhcp_server_identifier
# A hook script is provided to lookup the hostname if not set by
# the DHCP server, but it should not be run by default.
nohook lookup-hostname
# Ignore peth* devices; on Xen, they're renamed physical
# Ethernet cards used for bridging. Likewise for vif* and tap*
# (Xen) and virbr* and vnet* (libvirt).
denyinterfaces ${toString ignoredInterfaces} peth* vif* tap* virbr* vnet*
'';
in
{
@ -43,34 +66,9 @@ in
path = [ dhcpcd pkgs.nettools pkgs.openresolv ];
script =
''
# Determine the interface on which to start dhcpcd.
interfaces=
exec = "dhcpcd --config ${dhcpcdConf} --background --persistent";
for i in $(cd /sys/class/net && ls -d *); do
# Only run dhcpcd on interfaces of type ARPHRD_ETHER
# (1), i.e. Ethernet. Ignore peth* devices; on Xen,
# they're renamed physical Ethernet cards used for
# bridging. Likewise for vif* and tap* (Xen) and
# virbr* and vnet* (libvirt).
if [ "$(cat /sys/class/net/$i/type)" = 1 ]; then
if ! for j in ${toString ignoredInterfaces}; do echo $j; done | grep -F -x -q "$i" &&
! echo "$i" | grep -x -q "peth.*\|vif.*\|tap.*\|virbr.*\|vnet.*";
then
echo "Running dhcpcd on $i"
interfaces="$interfaces $i"
fi
fi
done
if [ -z "$interfaces" ]; then
echo 'No interfaces on which to start dhcpcd!'
exit 1
fi
exec dhcpcd --nobackground --persistent $interfaces
'';
daemonType = "daemon";
};
environment.systemPackages = [ dhcpcd ];
@ -80,13 +78,6 @@ in
${config.system.build.upstart}/sbin/restart dhcpcd
'';
networking.interfaceMonitor.commands =
''
if [ "$status" = up ]; then
${config.system.build.upstart}/sbin/restart dhcpcd
fi
'';
};
}