47 lines
1 KiB
Nix
47 lines
1 KiB
Nix
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{
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liminix
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, writeAshScript
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, serviceFns
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, lib
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} :
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{ interface }:
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let
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inherit (liminix.services) longrun;
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name = "${interface.name}.dhcpc";
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script = writeAshScript "dhcp-notify" { } ''
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. ${serviceFns}
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exec 2>&1
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action=$1
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set_address() {
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ip address replace $ip/$mask dev $interface
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(in_outputs ${name}
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for i in lease mask ip router siaddr dns serverid subnet opt53 interface ; do
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printenv $i > $i
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done)
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}
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case $action in
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deconfig)
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ip address flush $interface
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ip link set up dev $interface
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;;
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bound)
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# this doesn't actually replace, it adds a new address.
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set_address
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echo >/proc/self/fd/10
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;;
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renew)
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set_address
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;;
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nak)
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echo "received NAK on $interface"
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;;
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esac
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'';
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in longrun {
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inherit name;
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run = "/bin/udhcpc -f -i $(output ${interface} ifname) -x hostname:$(cat /proc/sys/kernel/hostname) -s ${script}";
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notification-fd = 10;
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dependencies = [ interface ];
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}
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