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nixos-module/container/lxc-config: simplify

pull/14/head
Astro 2023-06-05 01:25:04 +02:00
parent c41f5c56a6
commit b8d27ab9ca
1 changed files with 25 additions and 22 deletions
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47
nix/nixos-module/container/lxc-config.nix
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@ -4,6 +4,8 @@ let
inherit (config.networking) hostName;
interfaces = config.site.hosts.${hostName}.physicalInterfaces;
# linux iface name max length = 15
shortenNetName = name:
if builtins.match "priv(.*)" name != null
@ -21,27 +23,8 @@ let
else ifname;
# `lxc.net.*` formatter for lxc.container.conf files
netConfig = ctName: interfaces:
netConfig =
let
config = map (netName:
let
ifData = interfaces.${netName};
in {
type = ifData.type;
name = checkIfname netName;
flags = "up";
hwaddr = if ifData ? hwaddr && ifData.hwaddr != null
then ifData.hwaddr
else "0A:14:48:xx:xx:xx";
} // (lib.optionalAttrs (ifData.type == "veth") {
veth.pair = checkIfname "${shortenNetName ctName}-${shortenNetName netName}";
veth.mode = checkIfname "bridge";
link = checkIfname netName;
}) // (lib.optionalAttrs (ifData.type == "phys") {
link = checkIfname "ext-${netName}";
})
) (builtins.attrNames interfaces);
attrNamesOrdered = attrs:
if attrs ? type
then [ "type" ] ++ lib.remove "type" (builtins.attrNames attrs)
@ -69,8 +52,28 @@ let
map ({ e, i }: serialize "${name}.${toString i}" e) (enumerate x 0)
)
else throw "Invalid data in lxc net config for ${name}: ${lib.generators.toPretty {} x}";
in
serialize "lxc.net" config;
serialize "lxc.net" (
map (netName:
let
ifData = interfaces.${netName};
in {
type = ifData.type;
name = checkIfname netName;
flags = "up";
hwaddr = if ifData ? hwaddr && ifData.hwaddr != null
then ifData.hwaddr
else "0A:14:48:xx:xx:xx";
} // (lib.optionalAttrs (ifData.type == "veth") {
veth.pair = checkIfname "${shortenNetName hostName}-${shortenNetName netName}";
veth.mode = checkIfname "bridge";
link = checkIfname netName;
}) // (lib.optionalAttrs (ifData.type == "phys") {
link = checkIfname "ext-${netName}";
})
) (builtins.attrNames interfaces)
);
in
{
@ -106,6 +109,6 @@ in
lxc.cgroup.devices.allow = c 108:0 rwm
lxc.cgroup2.devices.allow = c 108:0 rwm
${netConfig hostName config.site.hosts.${hostName}.physicalInterfaces}
${netConfig}
'';
}