1 files changed, 130 insertions, 0 deletions
diff --git a/xorg-server/hw/xgl/xglloader.c b/xorg-server/hw/xgl/xglloader.c
new file mode 100644
index 000000000..f64acf18d
--- /dev/null
+++ b/xorg-server/hw/xgl/xglloader.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright © 2005 Novell, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Novell, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * Novell, Inc. makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * NOVELL, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL NOVELL, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#include "xgl.h"
+#include "xglmodule.h"
+
+#ifdef XGL_MODULAR
+
+#include <dlfcn.h>
+
+#define SYM(ptr, name) { (void **) &(ptr), (name) }
+
+void *
+xglLoadModule (const char *name,
+	       int	  flag)
+{
+    ModuleVersionProcPtr moduleVersion;
+    ModuleInitProcPtr    moduleInit;
+    void	         *handle = 0;
+    char	         *module;
+    xglSymbolRec         mSym[] = {
+	SYM (moduleVersion, "moduleVersion"),
+	SYM (moduleInit,    "moduleInit")
+    };
+
+    module = malloc (strlen (XGL_MODULE_PATH "/lib.so") + strlen (name) + 1);
+    if (!module)
+	return 0;
+
+    sprintf (module, XGL_MODULE_PATH "/lib%s.so", name);
+
+    handle = dlopen (module, flag);
+    if (handle)
+    {
+	if (xglLookupSymbols (handle, mSym, sizeof (mSym) / sizeof (mSym[0])))
+	{
+	    const char *version;
+
+	    version = (*moduleVersion) ();
+	    if (strcmp (VERSION, version) == 0)
+	    {
+		if (!(*moduleInit) (module))
+		{
+		    dlclose (handle);
+		    handle = 0;
+		}
+	    }
+	    else
+	    {
+		ErrorF ("Module version mismatch. "
+			"%s is %s Xserver is" VERSION "\n",
+			module, version);
+
+		dlclose (handle);
+		handle = 0;
+	    }
+	}
+	else
+	{
+	    dlclose (handle);
+	    handle = 0;
+	}
+    }
+    else
+	ErrorF ("dlopen: %s\n", dlerror ());
+
+    free (module);
+
+    return handle;
+}
+
+void
+xglUnloadModule (void *handle)
+{
+    dlclose (handle);
+}
+
+Bool
+xglLookupSymbols (void         *handle,
+		  xglSymbolPtr sym,
+		  int	       nSym)
+{
+    void *symbol;
+    char *error;
+    int  i;
+
+    /* avoid previous error */
+    dlerror ();
+
+    for (i = 0; i < nSym; i++)
+    {
+	symbol = dlsym (handle, sym[i].name);
+	if (!symbol)
+	{
+	    error = dlerror ();
+	    if (error != 0)
+		ErrorF ("dlsym: %s: %s\n", sym[i].name, error);
+
+	    return FALSE;
+	}
+
+	*(sym[i].ptr) = symbol;
+    }
+
+    return TRUE;
+}
+
+#endif