weston: Make the shell entrypoint specific

This avoids loading a shell as a module, so we are sure to have only one
shell loaded at a time.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor/main.c

@@ -828,6 +828,21 @@ wet_load_module(struct weston_compositor *compositor,
 	return 0;
 }
 
+static int
+wet_load_shell(struct weston_compositor *compositor,
+	       const char *name, int *argc, char *argv[])
+{
+	int (*shell_init)(struct weston_compositor *ec,
+			  int *argc, char *argv[]);
+
+	shell_init = wet_load_module_entrypoint(name, "wet_shell_init");
+	if (!shell_init)
+		return -1;
+	if (shell_init(compositor, argc, argv) < 0)
+		return -1;
+	return 0;
+}
+
 static int
 load_modules(struct weston_compositor *ec, const char *modules,
 	     int *argc, char *argv[])
@@ -1895,7 +1910,7 @@ int main(int argc, char *argv[])
 		weston_config_section_get_string(section, "shell", &shell,
 						 "desktop-shell.so");
 
-	if (load_modules(ec, shell, &argc, argv) < 0)
+	if (wet_load_shell(ec, shell, &argc, argv) < 0)
 		goto out;
 
 	weston_config_section_get_string(section, "modules", &modules, "");

compositor/weston.h

@@ -63,6 +63,9 @@ wet_get_config(struct weston_compositor *compositor);
 void *
 wet_load_module_entrypoint(const char *name, const char *entrypoint);
 
+int
+wet_shell_init(struct weston_compositor *ec,
+	       int *argc, char *argv[]);
 int
 wet_module_init(struct weston_compositor *ec,
 		int *argc, char *argv[]);