From 1da4185a89fba1c14032ab87757e5fb798d76bc0 Mon Sep 17 00:00:00 2001
From: Gopal Tiwari <gtiwari@redhat.com>
Date: Mon, 8 Jun 2020 19:55:39 +0530
Subject: [PATCH BlueZ 3/4] systemd: Add more filesystem lockdown

From 73a9c0902e7c97adf96e735407a75033152c04a9 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Wed, 13 Sep 2017 15:37:11 +0200

systemd: Add more filesystem lockdown

We can only access the configuration file as read-only and read-write
to the Bluetooth cache directory and sub-directories.
---
 Makefile.am              | 2 ++
 src/bluetooth.service.in | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index cdd2fd8fb..0af1a8c45 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -580,6 +580,8 @@ MAINTAINERCLEANFILES = Makefile.in \
 
 SED_PROCESS = $(AM_V_GEN)$(MKDIR_P) $(dir $@) && \
 		$(SED) -e 's,@pkglibexecdir\@,$(pkglibexecdir),g' \
+		       -e 's,@statedir\@,$(statedir),g' \
+		       -e 's,@confdir\@,$(confdir),g' \
 		< $< > $@
 
 %.service: %.service.in Makefile
diff --git a/src/bluetooth.service.in b/src/bluetooth.service.in
index 7c2f60bb4..4daedef2a 100644
--- a/src/bluetooth.service.in
+++ b/src/bluetooth.service.in
@@ -17,6 +17,10 @@ LimitNPROC=1
 ProtectHome=true
 ProtectSystem=full
 PrivateTmp=true
+ProtectKernelTunables=true
+ProtectControlGroups=true
+ReadWritePaths=@statedir@
+ReadOnlyPaths=@confdir@
 
 # Privilege escalation
 NoNewPrivileges=true
-- 
2.21.1