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{ config, lib, pkgs, ... }:
let
inherit (lib) mkIf mkOption types concatMapStrings;
cfg = config.security.apparmor;
in
{
#### interface
options = {
security.apparmor = {
enable = mkOption {
type = types.bool;
default = false;
description = "Enable the AppArmor Mandatory Access Control system.";
};
profiles = mkOption {
type = types.listOf types.path;
default = [];
description = "List of files containing AppArmor profiles.";
};
};
};
#### implementation
config = mkIf cfg.enable {
environment.systemPackages = [
pkgs.apparmor-utils
];
systemd.services.apparmor = {
wantedBy = [ "local-fs.target" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = "yes";
ExecStart = concatMapStrings (p:
''${pkgs.apparmor-parser}/bin/apparmor_parser -rKv -I ${pkgs.apparmor-profiles}/etc/apparmor.d "${p}" ; ''
) cfg.profiles;
ExecStop = concatMapStrings (p:
''${pkgs.apparmor-parser}/bin/apparmor_parser -Rv "${p}" ; ''
) cfg.profiles;
};
};
security.pam.services.apparmor.text = ''
## The AppArmor service changes hats according to order: first try
## user, then group, and finally fall back to a hat called "DEFAULT"
##
## For now, enable debugging as this is an experimental feature.
session optional ${pkgs.apparmor-pam}/lib/security/pam_apparmor.so order=user,group,default debug
'';
};
}
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