modules: misc fixes & tweaks.

modules: build spice chardevs as module.
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Merge remote-tracking branch 'remotes/kraxel/tags/modules-20201015-pull-request' into staging

modules: misc fixes & tweaks.
modules: build spice chardevs as module.

# gpg: Signature made Thu 15 Oct 2020 13:53:03 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/modules-20201015-pull-request:
  chardev/spice: build spice chardevs as module
  meson: add spice dependency to core spice source files.
  meson: add spice_headers dependency.
  chardev/spice: simplify chardev setup
  chardev/spice: make qemu_chr_open_spice_port static
  ui/spice-app: don't use qemu_chr_open_spice_port directly
  modules: update qom object module comment
  module: silence errors for module_load_qom_all().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ui/meson.build

@@ -14,7 +14,7 @@ softmmu_ss.add(files(
 ))
 
 softmmu_ss.add(when: 'CONFIG_LINUX', if_true: files('input-linux.c'))
-softmmu_ss.add(when: 'CONFIG_SPICE', if_true: files('spice-core.c', 'spice-input.c', 'spice-display.c'))
+softmmu_ss.add(when: [spice, 'CONFIG_SPICE'], if_true: files('spice-core.c', 'spice-input.c', 'spice-display.c'))
 softmmu_ss.add(when: cocoa, if_true: files('cocoa.m'))
 
 vnc_ss = ss.source_set()

ui/spice-app.c

@@ -44,11 +44,15 @@ static char *sock_path;
 struct VCChardev {
     SpiceChardev parent;
 };
-typedef struct VCChardev VCChardev;
+
+struct VCChardevClass {
+    ChardevClass parent;
+    void (*parent_open)(Chardev *chr, ChardevBackend *backend,
+                        bool *be_opened, Error **errp);
+};
 
 #define TYPE_CHARDEV_VC "chardev-vc"
-DECLARE_INSTANCE_CHECKER(VCChardev, VC_CHARDEV,
-                         TYPE_CHARDEV_VC)
+OBJECT_DECLARE_TYPE(VCChardev, VCChardevClass, CHARDEV_VC)
 
 static ChardevBackend *
 chr_spice_backend_new(void)
@@ -66,6 +70,7 @@ static void vc_chr_open(Chardev *chr,
                         bool *be_opened,
                         Error **errp)
 {
+    VCChardevClass *vc = CHARDEV_VC_GET_CLASS(chr);
     ChardevBackend *be;
     const char *fqdn = NULL;
 
@@ -80,7 +85,7 @@ static void vc_chr_open(Chardev *chr,
     be = chr_spice_backend_new();
     be->u.spiceport.data->fqdn = fqdn ?
         g_strdup(fqdn) : g_strdup_printf("org.qemu.console.%s", chr->label);
-    qemu_chr_open_spice_port(chr, be, be_opened, errp);
+    vc->parent_open(chr, be, be_opened, errp);
     qapi_free_ChardevBackend(be);
 }
 
@@ -91,8 +96,11 @@ static void vc_chr_set_echo(Chardev *chr, bool echo)
 
 static void char_vc_class_init(ObjectClass *oc, void *data)
 {
+    VCChardevClass *vc = CHARDEV_VC_CLASS(oc);
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    vc->parent_open = cc->open;
+
     cc->parse = qemu_chr_parse_vc;
     cc->open = vc_chr_open;
     cc->chr_set_echo = vc_chr_set_echo;
@@ -103,6 +111,7 @@ static const TypeInfo char_vc_type_info = {
     .parent = TYPE_CHARDEV_SPICEPORT,
     .instance_size = sizeof(VCChardev),
     .class_init = char_vc_class_init,
+    .class_size = sizeof(VCChardevClass),
 };
 
 static void spice_app_atexit(void)
@@ -120,7 +129,6 @@ static void spice_app_atexit(void)
 static void spice_app_display_early_init(DisplayOptions *opts)
 {
     QemuOpts *qopts;
-    ChardevBackend *be = chr_spice_backend_new();
     GError *err = NULL;
 
     if (opts->has_full_screen) {
@@ -165,6 +173,15 @@ static void spice_app_display_early_init(DisplayOptions *opts)
     qemu_opt_set(qopts, "gl", opts->has_gl ? "on" : "off", &error_abort);
     display_opengl = opts->has_gl;
 #endif
+}
+
+static void spice_app_display_init(DisplayState *ds, DisplayOptions *opts)
+{
+    ChardevBackend *be = chr_spice_backend_new();
+    QemuOpts *qopts;
+    GError *err = NULL;
+    gchar *uri;
+
     be->u.spiceport.data->fqdn = g_strdup("org.qemu.monitor.qmp.0");
     qemu_chardev_new("org.qemu.monitor.qmp", TYPE_CHARDEV_SPICEPORT,
                      be, NULL, &error_abort);
@@ -174,13 +191,6 @@ static void spice_app_display_early_init(DisplayOptions *opts)
     qemu_opt_set(qopts, "mode", "control", &error_abort);
 
     qapi_free_ChardevBackend(be);
-}
-
-static void spice_app_display_init(DisplayState *ds, DisplayOptions *opts)
-{
-    GError *err = NULL;
-    gchar *uri;
-
     uri = g_strjoin("", "spice+unix://", app_dir, "/", "spice.sock", NULL);
     info_report("Launching display with URI: %s", uri);
     g_app_info_launch_default_for_uri(uri, NULL, &err);

ui/spice-core.c

@@ -812,8 +812,6 @@ void qemu_spice_init(void)
     g_free(x509_cert_file);
     g_free(x509_cacert_file);
 
-    qemu_spice_register_ports();
-
 #ifdef HAVE_SPICE_GL
     if (qemu_opt_get_bool(opts, "gl", 0)) {
         if ((port != 0) || (tls_port != 0)) {