package/wpa_supplicant: Fix systemd service for new DBus bus name

systemd service files were supplied with old DBus bus name. After
service activation systemd was waiting for appearance of specified bus
name to consider it started successfully. However, if wpa_supplicant was
compiled only with new dbus interface name, then systemd didn't notice
configured (old) DBus bus name appearance. In the end service was
considered malfunctioning and it was deactivated.

Add upstreamable patch [1], which updates systemd service BusName
property according to configured DBus interface version.

[1] http://lists.infradead.org/pipermail/hostap/2016-April/035599.html

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/wpa_supplicant/0007-systemd-Update-service-files-according-to-dbus-inter.patch

@@ -0,0 +1,77 @@
+From b6cea24d6191d9ccdcd1ac38a5322e3da73218db Mon Sep 17 00:00:00 2001
+From: Marcin Niestroj <m.niestroj@grinn-global.com>
+Date: Mon, 11 Apr 2016 13:23:54 +0200
+Subject: [PATCH] systemd: Update service files according to dbus interface
+ version used
+
+systemd service files were supplied with old DBus bus name. After
+service activation systemd was waiting for appearance of specified bus
+name to consider it started successfully. However, if wpa_supplicant was
+compiled only with new dbus interface name, then systemd didn't notice
+configured (old) DBus bus name appearance. In the end service was
+considered malfunctioning and it was deactivated.
+
+Update systemd service BusName property according to supported DBus
+interface version.
+
+Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
+---
+ wpa_supplicant/Makefile                          | 8 ++++++--
+ wpa_supplicant/systemd/wpa_supplicant.service.in | 4 ++--
+ 2 files changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
+index ad9ead9..fbd1b25 100644
+--- a/wpa_supplicant/Makefile
++++ b/wpa_supplicant/Makefile
+@@ -1374,6 +1374,7 @@ ifndef DBUS_INCLUDE
+ DBUS_INCLUDE := $(shell $(PKG_CONFIG) --cflags dbus-1)
+ endif
+ DBUS_CFLAGS += $(DBUS_INCLUDE)
++DBUS_INTERFACE=fi.epitest.hostap.WPASupplicant
+ endif
+ 
+ ifdef CONFIG_CTRL_IFACE_DBUS_NEW
+@@ -1399,6 +1400,7 @@ DBUS_OBJS += dbus/dbus_new_introspect.o
+ DBUS_CFLAGS += -DCONFIG_CTRL_IFACE_DBUS_INTRO
+ endif
+ DBUS_CFLAGS += $(DBUS_INCLUDE)
++DBUS_INTERFACE=fi.w1.wpa_supplicant1
+ endif
+ 
+ ifdef DBUS
+@@ -1760,11 +1762,13 @@ else
+ endif
+ 
+ %.service: %.service.in
+-	$(Q)sed -e 's|\@BINDIR\@|$(BINDIR)|g' $< >$@
++	$(Q)sed -e 's|\@BINDIR\@|$(BINDIR)|g' \
++		-e 's|\@DBUS_INTERFACE\@|$(DBUS_INTERFACE)|g' $< >$@
+ 	@$(E) "  sed" $<
+ 
+ %@.service: %.service.arg.in
+-	$(Q)sed -e 's|\@BINDIR\@|$(BINDIR)|g' $< >$@
++	$(Q)sed -e 's|\@BINDIR\@|$(BINDIR)|g' \
++		-e 's|\@DBUS_INTERFACE\@|$(DBUS_INTERFACE)|g' $< >$@
+ 	@$(E) "  sed" $<
+ 
+ wpa_supplicant.exe: wpa_supplicant
+diff --git a/wpa_supplicant/systemd/wpa_supplicant.service.in b/wpa_supplicant/systemd/wpa_supplicant.service.in
+index ea964ce..bc5d49a 100644
+--- a/wpa_supplicant/systemd/wpa_supplicant.service.in
++++ b/wpa_supplicant/systemd/wpa_supplicant.service.in
+@@ -5,9 +5,9 @@ Wants=network.target
+ 
+ [Service]
+ Type=dbus
+-BusName=fi.epitest.hostap.WPASupplicant
++BusName=@DBUS_INTERFACE@
+ ExecStart=@BINDIR@/wpa_supplicant -u
+ 
+ [Install]
+ WantedBy=multi-user.target
+-Alias=dbus-fi.epitest.hostap.WPASupplicant.service
++Alias=dbus-@DBUS_INTERFACE@.service
+-- 
+2.8.0
+