r11304: Add support back in for loading shared modules (not used yet)

source/lib/module.c

@@ -0,0 +1,93 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Jelmer Vernooij 2005
+   
+   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 of the License, or
+   (at your option) any later version.
+   
+   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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "dynconfig.h"
+#include "system/dir.h"
+
+static BOOL load_module(TALLOC_CTX *mem_ctx, const char *dir, const char *name)
+{
+	char *path;
+	void *handle;
+	BOOL (*init_module_fn) (void);
+	BOOL ret;
+
+	path = talloc_asprintf(mem_ctx, "%s/%s", dir, name);
+
+	handle = dlopen(path, 0);
+	if (handle == NULL) {
+		DEBUG(0, ("Unable to open %s: %s\n", path, dlerror()));
+		return False;
+	}
+
+	init_module_fn = dlsym(handle, "init_module");
+
+	if (init_module_fn == NULL) {
+		DEBUG(0, ("Unable to find init_module() in %s: %s\n", path, dlerror()));
+		return False;
+	}
+
+	ret = init_module_fn();
+	if (!ret) {
+		DEBUG(1, ("Loading module '%s' failed\n", path));
+	}
+
+	dlclose(handle);
+
+	talloc_free(path);
+
+	return ret;
+}
+
+BOOL load_modules(const char *subsystem)
+{
+	DIR *dir;
+	struct dirent *entry;
+	char *dir_path;
+	BOOL ret;
+	TALLOC_CTX *mem_ctx;
+	
+	mem_ctx = talloc_init(NULL);
+
+	dir_path = talloc_asprintf(mem_ctx, "%s/%s", dyn_LIBDIR, subsystem);
+	if (!dir_path) {
+		talloc_free(mem_ctx);
+		return False;
+	}
+
+	dir = opendir(subsystem);
+	if (dir == NULL) {
+		talloc_free(mem_ctx);
+		return False;
+	}
+
+	while((entry = readdir(dir))) {
+		if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
+			continue;
+
+		ret &= load_module(mem_ctx, dir_path, entry->d_name);
+	}
+
+	closedir(dir);
+
+	talloc_free(mem_ctx);
+
+	return ret;
+}