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network-interfaces: use setcap-wrappers for ping and ping6 iff linux kernel is at-least 4.3

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This commit is contained in:
Parnell Springmeyer 2016-06-30 18:59:18 -05:00
parent 49d59ce0ad
commit 5deed1cb86
1 changed files with 21 additions and 2 deletions
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23
nixos/modules/tasks/network-interfaces.nix
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@ -1,4 +1,4 @@
{ config, lib, pkgs, utils, ... }:
{ config, lib, pkgs, utils, stdenv, ... }:
with lib;
with utils;
@ -889,7 +889,26 @@ in
(i: flip map [ "4" "6" ] (v: nameValuePair "net.ipv${v}.conf.${i.name}.proxy_arp" true))
));
security.setuidPrograms = [ "ping" "ping6" ];
# Capabilities won't work unless we have at-least a 4.3 Linux
# kernel because we need the ambient capability
security.setcapCapabilities = mkIf (versionAtLeast (getVersion config.boot.kernelPackages.kernel) "4.3") (
[
{ program = "ping";
setcap = true;
capabilities = "cap_net_raw+p";
}
{ program = "ping6";
setcap = true;
capabilities = "cap_net_raw+p";
}
]
);
# If our linux kernel IS older than 4.3, let's setuid ping and ping6
security.setuidPrograms = mkIf (versionOlder (getVersion config.boot.kernelPackages.kernel) "4.3") (
[ "ping" "ping6" ]
);
# Set the host and domain names in the activation script. Don't
# clear it if it's not configured in the NixOS configuration,