udev: make sure the udev callout path is valid for a test run

udev requires callout binaries to sit in /lib/udev or otherwise provide an
absolute path. The test suite should work without installing everything first,
so create two rule files - one to install, one with the path to the
$builddir/test

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>

configure.ac

@@ -184,6 +184,12 @@ AM_CONDITIONAL(HAVE_VALGRIND, [test "x$VALGRIND" != "x"])
 AM_CONDITIONAL(BUILD_TESTS, [test "x$build_tests" = "xyes"])
 AM_CONDITIONAL(BUILD_DOCS, [test "x$build_documentation" = "xyes"])
 
+# Used by the udev rules so we can use callouts during testing without
+# installing everything first. Default is the empty string so the installed
+# rule will use udev's default path. Override is in udev/Makefile.am
+AC_SUBST(UDEV_TEST_PATH, "")
+AC_PATH_PROG(SED, [sed])
+
 AC_CONFIG_FILES([Makefile
 		 doc/Makefile
 		 doc/libinput.doxygen
@@ -192,7 +198,9 @@ AC_CONFIG_FILES([Makefile
 		 src/libinput-version.h
 		 test/Makefile
 		 tools/Makefile
-		 udev/Makefile])
+		 udev/Makefile
+		 udev/80-libinput-device-groups.rules
+		 udev/90-libinput-model-quirks.rules])
 AC_CONFIG_FILES([test/symbols-leak-test],
 		[chmod +x test/symbols-leak-test])
 AC_OUTPUT

test/Makefile.am

@@ -43,7 +43,7 @@ liblitest_la_SOURCES = \
 	litest.c
 liblitest_la_LIBADD = $(top_builddir)/src/libinput-util.la
 liblitest_la_CFLAGS = $(AM_CFLAGS) \
-	      -DLIBINPUT_UDEV_RULES_FILE="\"$(abs_top_srcdir)/udev/90-libinput-model-quirks.rules\"" \
+	      -DLIBINPUT_UDEV_RULES_FILE="\"$(abs_top_srcdir)/udev/90-libinput-model-quirks-litest.rules\"" \
 	      -DLIBINPUT_UDEV_HWDB_FILE="\"$(abs_top_srcdir)/udev/90-libinput-model-quirks.hwdb\""
 if HAVE_LIBUNWIND
 liblitest_la_LIBADD += $(LIBUNWIND_LIBS) -ldl

udev/.gitignore

@@ -1 +1,2 @@
 libinput-device-group
+*.rules

udev/80-libinput-device-groups.rules.in

@@ -2,7 +2,7 @@ ACTION!="add|change", GOTO="libinput_device_group_end"
 KERNEL!="event[0-9]*", GOTO="libinput_device_group_end"
 
 ATTRS{phys}=="?*", \
-	PROGRAM="libinput-device-group %S%p", \
+	PROGRAM="@UDEV_TEST_PATH@libinput-device-group %S%p", \
 	ENV{LIBINPUT_DEVICE_GROUP}="%c"
 
 LABEL="libinput_device_group_end"

udev/Makefile.am

@@ -1,6 +1,10 @@
 udevdir=$(UDEV_DIR)
 udev_PROGRAMS = libinput-device-group
 
+litest_rules = 80-libinput-device-groups-litest.rules \
+	       90-libinput-model-quirks-litest.rules
+udev_SCRIPTS = $(litest_rules)
+
 libinput_device_group_SOURCES = libinput-device-group.c
 libinput_device_group_CFLAGS = $(LIBUDEV_CFLAGS) $(GCC_CFLAGS)
 libinput_device_group_LDADD = $(LIBUDEV_LIBS)
@@ -13,3 +17,11 @@ dist_udev_rules_DATA = \
 udev_hwdbdir=$(UDEV_DIR)/hwdb.d
 dist_udev_hwdb_DATA = \
 	90-libinput-model-quirks.hwdb
+
+%-litest.rules: %.rules.in
+	$(SED) -e "s|\@UDEV_TEST_PATH\@|$(abs_builddir)/|" < $^ > $@
+
+CLEANFILES = $(litest_rules)
+DISTCLEANFILES = \
+		 80-libinput-device-groups.rules \
+		 90-libinput-model-quirks.rules