build: Fix issue with incorrect ReadWritePaths in unit files

Makefile.am

@@ -568,8 +568,10 @@ ell/ell.h: Makefile
 		echo "#include <$$f>" >> $@ ; \
 	done
 
-SED_PROCESS = $(AM_V_GEN)$(MKDIR_P) $(dir $@) && \
-		$(SED) -e 's,@libexecdir\@,$(libexecdir),g' \
+SED_PROCESS = $(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(SED) \
+		-e 's,@libexecdir\@,$(libexecdir),g' \
+		-e 's,@daemon_storagedir\@,$(daemon_storagedir),g' \
+		-e 's,@wired_storagedir\@,$(wired_storagedir),g' \
 		< $< > $@
 
 %.service: %.service.in Makefile

configure.ac

@@ -116,6 +116,9 @@ else
 	wired_storagedir="${localstatedir}/lib/ead"
 fi
 
+AC_SUBST([daemon_storagedir], [${daemon_storagedir}])
+AC_SUBST([wired_storagedir], [${wired_storagedir}])
+
 AC_DEFINE_UNQUOTED(DAEMON_STORAGEDIR, "${daemon_storagedir}",
 			[Directory for Wireless daemon storage files])
 AC_DEFINE_UNQUOTED(DAEMON_CONFIGDIR, "/etc/iwd",

src/iwd.service.in

@@ -15,7 +15,7 @@ DevicePolicy=closed
 DeviceAllow=/dev/rfkill rw
 ProtectHome=yes
 ProtectSystem=strict
-ReadWritePaths=/var/lib/iwd/
+ReadWritePaths=@daemon_storagedir@
 ProtectControlGroups=yes
 ProtectKernelModules=yes
 

wired/ead.service.in

@@ -8,6 +8,15 @@ Type=dbus
 BusName=net.connman.ead
 ExecStart=@libexecdir@/ead
 LimitNPROC=1
+Restart=on-failure
+PrivateTmp=true
+NoNewPrivileges=true
+PrivateDevices=true
+ProtectHome=yes
+ProtectSystem=strict
+ReadWritePaths=@wired_storagedir@
+ProtectControlGroups=yes
+ProtectKernelModules=yes
 
 [Install]
 WantedBy=multi-user.target