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nixos/dhcpcd: Respect per interface dhcp options

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This commit is contained in:
William A. Kennington III 2014-11-24 18:11:26 -08:00
parent 7005e289da
commit c417012c1b
1 changed files with 16 additions and 3 deletions
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19
nixos/modules/services/networking/dhcpcd.nix
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@ -8,15 +8,28 @@ let
cfg = config.networking.dhcpcd;
interfaces = attrValues config.networking.interfaces;
enableDHCP = config.networking.useDHCP || any (i: i.useDHCP == true) interfaces;
# Don't start dhcpcd on explicitly configured interfaces or on
# interfaces that are part of a bridge, bond or sit device.
ignoredInterfaces =
map (i: i.name) (filter (i: if i.useDHCP != null then i.useDHCP else i.ip4 != [ ] || i.ipAddress != null) (attrValues config.networking.interfaces))
map (i: i.name) (filter (i: if i.useDHCP != null then i.useDHCP else i.ip4 != [ ] || i.ipAddress != null) interfaces)
++ mapAttrsToList (i: _: i) config.networking.sits
++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bridges))
++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bonds))
++ config.networking.dhcpcd.denyInterfaces;
arrayAppendOrNull = a1: a2: if a1 == null && a2 == null then null
else if a1 == null then a2 else if a2 == null then a1
else a1 ++ a2;
# If dhcp is disabled but explicit interfaces are enabled,
# we need to provide dhcp just for those interfaces.
allowInterfaces = arrayAppendOrNull cfg.allowInterfaces
(if !cfg.useDHCP && enableDHCP then map (i: i.name) (filter (i: i.useDHCP == true) interfaces) else null);
# Config file adapted from the one that ships with dhcpcd.
dhcpcdConf = pkgs.writeText "dhcpcd.conf"
''
@ -41,7 +54,7 @@ let
denyinterfaces ${toString ignoredInterfaces} lo peth* vif* tap* tun* virbr* vnet* vboxnet* sit*
# Use the list of allowed interfaces if specified
${optionalString (cfg.allowInterfaces != null) "allowinterfaces ${toString cfg.allowInterfaces}"}
${optionalString (allowInterfaces != null) "allowinterfaces ${toString allowInterfaces}"}
${cfg.extraConfig}
'';
@ -133,7 +146,7 @@ in
###### implementation
config = mkIf config.networking.useDHCP {
config = mkIf enableDHCP {
systemd.services.dhcpcd =
{ description = "DHCP Client";