liminix

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link.nix (554B)

      1 {
      2   liminix,
      3   lib,
      4 }:
      5 {
      6   ifname,
      7   devpath ? null,
      8   mtu,
      9 }:
     10 # if devpath is supplied, we rename the interface at that
     11 # path to have the specified name.
     12 let
     13   inherit (liminix.services) oneshot;
     14   name = "${ifname}.link";
     15   rename =
     16     if devpath != null then
     17       ''
     18         oldname=$(cd /sys${devpath} && cd net/ && echo *)
     19         ip link set ''${oldname} name ${ifname}
     20       ''
     21     else
     22       "";
     23 in
     24 oneshot {
     25   inherit name;
     26   up = ''
     27     ${rename}
     28     ${liminix.networking.ifup name ifname}
     29   '';
     30   down = "ip link set down dev ${ifname}";
     31 }