d22b3ed4bc
See https://www.redhat.com/sysadmin/fedora-31-control-group-v2 for details on why this is desirable, and how it impacts containers. Users that need to keep using the old cgroup hierarchy can re-enable it by setting `systemd.unifiedCgroupHierarchy` to `false`. Well-known candidates not supporting that hierarchy, like docker and hidepid=… will disable it automatically. Fixes #73800
32 lines
869 B
Nix
32 lines
869 B
Nix
{ config, lib, ... }:
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with lib;
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{
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meta = {
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maintainers = [ maintainers.joachifm ];
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doc = ./hidepid.xml;
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};
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options = {
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security.hideProcessInformation = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Restrict process information to the owning user.
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'';
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};
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};
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config = mkIf config.security.hideProcessInformation {
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users.groups.proc.gid = config.ids.gids.proc;
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users.groups.proc.members = [ "polkituser" ];
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boot.specialFileSystems."/proc".options = [ "hidepid=2" "gid=${toString config.ids.gids.proc}" ];
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systemd.services.systemd-logind.serviceConfig.SupplementaryGroups = [ "proc" ];
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# Disable cgroupsv2, which doesn't work with hidepid.
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# https://github.com/NixOS/nixpkgs/pull/104094#issuecomment-729996203
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systemd.enableUnifiedCgroupHierarchy = false;
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};
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}
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