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>

1 files changed, 15 insertions, 11 deletions

diff --git a/util/module.c b/util/module.c
index a44ec38d93..f0ed05fbd0 100644
--- a/util/module.c
+++ b/util/module.c
@@ -110,7 +110,7 @@ void module_call_init(module_init_type type)
 }
 
 #ifdef CONFIG_MODULES
-static int module_load_file(const char *fname)
+static int module_load_file(const char *fname, bool mayfail)
 {
     GModule *g_module;
     void (*sym)(void);
@@ -134,8 +134,10 @@ static int module_load_file(const char *fname)
 
     g_module = g_module_open(fname, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
     if (!g_module) {
-        fprintf(stderr, "Failed to open module: %s\n",
-                g_module_error());
+        if (!mayfail) {
+            fprintf(stderr, "Failed to open module: %s\n",
+                    g_module_error());
+        }
         ret = -EINVAL;
         goto out;
     }
@@ -167,7 +169,7 @@ out:
 }
 #endif
 
-bool module_load_one(const char *prefix, const char *lib_name)
+bool module_load_one(const char *prefix, const char *lib_name, bool mayfail)
 {
     bool success = false;
 
@@ -218,7 +220,7 @@ bool module_load_one(const char *prefix, const char *lib_name)
     for (i = 0; i < n_dirs; i++) {
         fname = g_strdup_printf("%s/%s%s",
                 dirs[i], module_name, CONFIG_HOST_DSOSUF);
-        ret = module_load_file(fname);
+        ret = module_load_file(fname, mayfail);
         g_free(fname);
         fname = NULL;
         /* Try loading until loaded a module file */
@@ -248,8 +250,10 @@ bool module_load_one(const char *prefix, const char *lib_name)
  * only a very few devices & objects.
  *
  * So with the expectation that this will be rather the exception than
- * to rule and the list will not gain that many entries go with a
+ * the rule and the list will not gain that many entries, go with a
  * simple manually maintained list for now.
+ *
+ * The list must be sorted by module (module_load_qom_all() needs this).
  */
 static struct {
     const char *type;
@@ -264,6 +268,8 @@ static struct {
     { "virtio-gpu-device",     "hw-", "display-virtio-gpu"    },
     { "vhost-user-gpu",        "hw-", "display-virtio-gpu"    },
     { "chardev-braille",       "chardev-", "baum"             },
+    { "chardev-spicevmc",      "chardev-", "spice"            },
+    { "chardev-spiceport",     "chardev-", "spice"            },
 };
 
 static bool module_loaded_qom_all;
@@ -275,13 +281,11 @@ void module_load_qom_one(const char *type)
     if (!type) {
         return;
     }
-    if (module_loaded_qom_all) {
-        return;
-    }
     for (i = 0; i < ARRAY_SIZE(qom_modules); i++) {
         if (strcmp(qom_modules[i].type, type) == 0) {
             module_load_one(qom_modules[i].prefix,
-                            qom_modules[i].module);
+                            qom_modules[i].module,
+                            false);
             return;
         }
     }
@@ -302,7 +306,7 @@ void module_load_qom_all(void)
             /* one module implementing multiple types -> load only once */
             continue;
         }
-        module_load_one(qom_modules[i].prefix, qom_modules[i].module);
+        module_load_one(qom_modules[i].prefix, qom_modules[i].module, true);
     }
     module_loaded_qom_all = true;
 }