liminix-fork/modules/network/address.nix

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{
liminix
, ifwait
, serviceFns
, lib
}:
{interface, family, address, prefixLength} :
let
inherit (liminix.services) oneshot;
# rather depending on the assumption that nobody will
# ever add two addresses which are the same but with different
# prefixes, or the same but different protocols
name = "${interface.name}.a.${address}";
up = ''
. ${serviceFns}
dev=$(output ${interface} ifname)
ip address add ${address}/${toString prefixLength} dev $dev
(in_outputs ${name}
echo ${address} > address
echo ${toString prefixLength} > prefix-length
echo ${family} > family
echo $dev > ifname
)
'';
in oneshot {
inherit name up;
down = "true"; # this has been broken for ~ ages
dependencies = [ interface ];
}