spice: add module helpers

Add new spice-module.c + qemu-spice-module.h files.  The code needed to
support modular spice will be there.  For starters this will be only the
using_spice variable, more will follow ...

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20201019075224.14803-2-kraxel@redhat.com

include/ui/qemu-spice-module.h

+/*
+ * Copyright (C) 2010 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef QEMU_SPICE_MODULE_H
+#define QEMU_SPICE_MODULE_H
+
+extern int using_spice;
+
+#endif

include/ui/qemu-spice.h

@@ -19,14 +19,13 @@
 #define QEMU_SPICE_H
 
 #include "qapi/error.h"
+#include "ui/qemu-spice-module.h"
 
 #ifdef CONFIG_SPICE
 
 #include <spice.h>
 #include "qemu/config-file.h"
 
-extern int using_spice;
-
 void qemu_spice_init(void);
 void qemu_spice_input_init(void);
 void qemu_spice_display_init(void);
@@ -50,7 +49,6 @@ int qemu_spice_migrate_info(const char *hostname, int port, int tls_port,
 
 #include "qemu/error-report.h"
 
-#define using_spice 0
 #define spice_displays 0
 static inline int qemu_spice_set_passwd(const char *passwd,
                                         bool fail_if_connected,

ui/meson.build

@@ -12,6 +12,7 @@ softmmu_ss.add(files(
   'keymaps.c',
   'qemu-pixman.c',
 ))
+softmmu_ss.add([spice_headers, files('spice-module.c')])
 
 softmmu_ss.add(when: 'CONFIG_LINUX', if_true: files('input-linux.c'))
 softmmu_ss.add(when: [spice, 'CONFIG_SPICE'], if_true: files('spice-core.c', 'spice-input.c', 'spice-display.c'))

ui/spice-core.c

@@ -48,7 +48,6 @@ static time_t auth_expires = TIME_MAX;
 static int spice_migration_completed;
 static int spice_display_is_running;
 static int spice_have_target_host;
-int using_spice = 0;
 
 static QemuThread me;
 

ui/spice-module.c

+/*
+ * spice module support, also spice stubs.
+ *
+ * Copyright (C) 2010 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "ui/qemu-spice-module.h"
+
+int using_spice;