nixpkgs/nixos/modules/security/hidepid.nix
Nikolay Amiantov 6efcfe03ae nixos filesystems: unify early filesystems handling
A new internal config option `fileSystems.<name>.early` is added to indicate
that the filesystem needs to be loaded very early (i.e. in initrd). They are
transformed to a shell script in `system.build.earlyMountScript` with calls to
an undefined `specialMount` function, which is expected to be caller-specific.
This option is used by stage-1, stage-2 and activation script to set up and
remount those filesystems.  Options for them are updated according to systemd
defaults.
2016-08-27 13:38:20 +03:00

26 lines
988 B
Nix

{ config, pkgs, lib, ... }:
with lib;
{
options = {
security.hideProcessInformation = mkEnableOption "" // { description = ''
Restrict access to process information to the owning user. Enabling
this option implies, among other things, that command-line arguments
remain private. This option is recommended for most systems, unless
there's a legitimate reason for allowing unprivileged users to inspect
the process information of other users.
Members of the group "proc" are exempt from process information hiding.
To allow a service to run without process information hiding, add "proc"
to its supplementary groups via
<option>systemd.services.&lt;name?&gt;.serviceConfig.SupplementaryGroups</option>.
''; };
};
config = mkIf config.security.hideProcessInformation {
users.groups.proc.gid = config.ids.gids.proc;
fileSystems."/proc".options = [ "hidepid=2" "gid=${toString config.ids.gids.proc}" ];
};
}