daemon: clean house (drop factory mode)

GDM has a currently unused feature called "factory mode", where
the login screen gets allocated its own VT and any subsequent logins
from that login screen go to their own VT.  Any time there's a user
switch GDM just jumps back to initial VT where the login screen is
patiently waiting.

This feature has a lot of upsides, and we've had it as a TODO item to
start using it for while now.

It doesn't look it's going to happen in the near term, though, and
factory mode has downsides as well:

- a VT switch after the user hits enter at the login screen would be
  jarring and would ruin the "flicker free" boot experience we've tried
  to acheive at various points in the past. This could theoretically be
  fixed by Wayland.

- it adds a bunch of untested, unused code to the codebase.

This latter reason makes me want to kill it for now. It shouldn't be
hard to resurrect later if we end up needing the feature.

This commit drops that code.

.gitignore

@@ -28,12 +28,9 @@ configure.lineno
 gdm.conf
 gdm.conf-custom
 gdm-display-glue.h
-gdm-factory-slave-glue.h
 gdm-local-display-factory-glue.h
 gdm-manager-glue.h
 gdm.pot
-gdm-product-display-glue.h
-gdm-product-slave-glue.h
 gdm-restart
 gdm-safe-restart
 gdm.schemas

daemon/INTERNALS

@@ -35,12 +35,6 @@ Server diplay.
 
 A subclass of GdmDisplay that represents a local display.
 
-*** GdmProductDisplay
-
-A subclass of GdmDisplay that only runs a user session.  It does not
-run a login greeter interface.  It will also be destroyed when
-the user session ends.
-
 *** GdmXdmcpDisplay
 
 A subclass of GdmDisplay that represents a remote XDMCP display.
@@ -57,15 +51,6 @@ slave communicates with the parent display using the D-Bus protocol.
 A subclass of GdmSlave that runs both a login greeter and a user
 session.
 
-*** GdmFactorySlave
-
-A subclass of GdmSlave that only runs a login greeter.
-
-*** GdmProductSlave
-
-A subclass of GdmSlave that only runs a user session.
-
-
 ** GdmServer
 
 A class that manages running a local X Server.
@@ -93,13 +78,6 @@ A class of object that implements the GdmSession interface.  It is
 used to start and directly control a GdmSessionWorker subprocess by
 creating a D-Bus server on a private connection.
 
-*** GdmSessionRelay
-
-A class of object that implements the GdmSession interface.  It is
-used to relay session controls to a remote listener.  In particular,
-it is used to relay messages between the GreeterServer in a
-GdmFactorySlave and the GdmSessionDirect in a GdmProductSlave.
-
 ** GdmSessionWorkerJob
 
 A class that manages running a GdmSessionWorker subprocess.  This will

daemon/Makefile.am

@@ -31,8 +31,6 @@ AM_CPPFLAGS = \
 BUILT_SOURCES =					\
 	gdm-slave-glue.h			\
 	gdm-simple-slave-glue.h			\
-	gdm-factory-slave-glue.h		\
-	gdm-product-slave-glue.h		\
 	gdm-xdmcp-chooser-slave-glue.h		\
 	gdm-session-direct-glue.h		\
 	gdm-manager-glue.h			\
@@ -42,7 +40,6 @@ BUILT_SOURCES =					\
 	gdm-static-display-glue.h		\
 	gdm-transient-display-glue.h		\
 	gdm-local-display-factory-glue.h	\
-	gdm-product-display-glue.h		\
 	$(NULL)
 
 gdm-manager-glue.h: gdm-manager.xml Makefile.am
@@ -51,10 +48,6 @@ gdm-slave-glue.h: gdm-slave.xml Makefile.am
 	dbus-binding-tool --prefix=gdm_slave --mode=glib-server --output=gdm-slave-glue.h $(srcdir)/gdm-slave.xml
 gdm-simple-slave-glue.h: gdm-simple-slave.xml Makefile.am
 	dbus-binding-tool --prefix=gdm_simple_slave --mode=glib-server --output=gdm-simple-slave-glue.h $(srcdir)/gdm-simple-slave.xml
-gdm-factory-slave-glue.h: gdm-factory-slave.xml Makefile.am
-	dbus-binding-tool --prefix=gdm_factory_slave --mode=glib-server --output=gdm-factory-slave-glue.h $(srcdir)/gdm-factory-slave.xml
-gdm-product-slave-glue.h: gdm-product-slave.xml Makefile.am
-	dbus-binding-tool --prefix=gdm_product_slave --mode=glib-server --output=gdm-product-slave-glue.h $(srcdir)/gdm-product-slave.xml
 gdm-xdmcp-chooser-slave-glue.h: gdm-xdmcp-chooser-slave.xml Makefile.am
 	dbus-binding-tool --prefix=gdm_xdmcp_chooser_slave --mode=glib-server --output=gdm-xdmcp-chooser-slave-glue.h $(srcdir)/gdm-xdmcp-chooser-slave.xml
 gdm-session-direct-glue.h: gdm-session-direct.xml Makefile.am
@@ -71,8 +64,6 @@ gdm-transient-display-glue.h: gdm-transient-display.xml Makefile.am
 	dbus-binding-tool --prefix=gdm_transient_display --mode=glib-server --output=gdm-transient-display-glue.h $(srcdir)/gdm-transient-display.xml
 gdm-local-display-factory-glue.h: gdm-local-display-factory.xml Makefile.am
 	dbus-binding-tool --prefix=gdm_local_display_factory --mode=glib-server --output=gdm-local-display-factory-glue.h $(srcdir)/gdm-local-display-factory.xml
-gdm-product-display-glue.h: gdm-product-display.xml Makefile.am
-	dbus-binding-tool --prefix=gdm_product_display --mode=glib-server --output=gdm-product-display-glue.h $(srcdir)/gdm-product-display.xml
 
 noinst_PROGRAMS = 		\
 	test-session		\
@@ -101,8 +92,6 @@ test_session_LDADD =		\
 
 libexec_PROGRAMS = 			\
 	gdm-simple-slave		\
-	gdm-factory-slave		\
-	gdm-product-slave		\
 	gdm-session-worker		\
 	$(NULL)
 
@@ -152,82 +141,6 @@ gdm_simple_slave_LDADD = 			\
 	$(SYSTEMD_LIBS) 			\
 	$(NULL)
 
-gdm_factory_slave_SOURCES = 		\
-	factory-slave-main.c 		\
-	gdm-greeter-server.c		\
-	gdm-greeter-server.h		\
-	gdm-welcome-session.c		\
-	gdm-welcome-session.h		\
-	gdm-greeter-session.c		\
-	gdm-greeter-session.h		\
-	gdm-server.c			\
-	gdm-server.h			\
-	gdm-session.c			\
-	gdm-session.h			\
-	gdm-session-direct.c		\
-	gdm-session-direct.h		\
-	gdm-session-private.h		\
-	gdm-session-record.c		\
-	gdm-session-record.h		\
-	gdm-session-relay.c		\
-	gdm-session-relay.h		\
-	gdm-session-worker-job.c	\
-	gdm-session-worker-job.h	\
-	gdm-xerrors.h			\
-	gdm-xerrors.c			\
-	gdm-slave.c			\
-	gdm-slave.h			\
-	gdm-factory-slave.c		\
-	gdm-factory-slave.h		\
-	$(NULL)
-
-gdm_factory_slave_LDFLAGS =		\
-	$(PAM_LIBS)			\
-	$(LIBXKLAVIER_LIBS)		\
-	$(NULL)
-
-gdm_factory_slave_LDADD = 			\
-	$(top_builddir)/common/libgdmcommon.la	\
-	$(XLIB_LIBS)				\
-	$(DAEMON_LIBS)				\
-	$(SYSTEMD_LIBS) 			\
-	$(NULL)
-
-gdm_product_slave_SOURCES = 		\
-	product-slave-main.c 		\
-	gdm-server.c			\
-	gdm-server.h			\
-	gdm-session.c			\
-	gdm-session.h			\
-	gdm-session-private.h		\
-	gdm-session-direct.c		\
-	gdm-session-direct.h		\
-	gdm-session-record.c		\
-	gdm-session-record.h		\
-	gdm-session-worker-job.c	\
-	gdm-session-worker-job.h	\
-	gdm-xerrors.h			\
-	gdm-xerrors.c			\
-	gdm-slave.c			\
-	gdm-slave.h			\
-	gdm-product-slave.c		\
-	gdm-product-slave.h		\
-	$(NULL)
-
-gdm_product_slave_LDFLAGS =		\
-	$(PAM_LIBS)			\
-	$(LIBXKLAVIER_LIBS)		\
-	$(NULL)
-
-gdm_product_slave_LDADD = 			\
-	$(top_builddir)/common/libgdmcommon.la	\
-	$(XLIB_LIBS)				\
-	$(DAEMON_LIBS)				\
-	$(EXTRA_DAEMON_LIBS)                    \
-	$(LIBXKLAVIER_LIBS)			\
-	$(SYSTEMD_LIBS) 			\
-	$(NULL)
-
 gdm_xdmcp_chooser_slave_SOURCES = 		\
 	xdmcp-chooser-slave-main.c 		\
 	gdm-chooser-server.c			\
@@ -313,8 +226,6 @@ gdm_binary_SOURCES = 			\
 	gdm-static-display.h		\
 	gdm-transient-display.c		\
 	gdm-transient-display.h		\
-	gdm-product-display.c		\
-	gdm-product-display.h		\
 	gdm-manager.c			\
 	gdm-manager.h			\
 	gdm-slave-proxy.c		\
@@ -380,7 +291,6 @@ EXTRA_DIST = 				\
 	gdm.in				\
 	gdm-slave.xml			\
 	gdm-simple-slave.xml		\
-	gdm-factory-slave.xml		\
 	gdm-product-slave.xml		\
 	gdm-xdmcp-chooser-slave.xml	\
 	gdm-session-direct.xml		\
@@ -391,5 +301,4 @@ EXTRA_DIST = 				\
 	gdm-static-display.xml		\
 	gdm-transient-display.xml	\
 	gdm-local-display-factory.xml	\
-	gdm-product-display.xml		\
 	$(NULL)