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

(This used to be commit 90f49b6f70c4aaf0e4ab4fad2e6f9caeb0f6f3a6)

6 files changed, 96 insertions, 29 deletions

diff --git a/source4/build/m4/public.m4 b/source4/build/m4/public.m4
index c70514bdb6..69bce86f4d 100644
--- a/source4/build/m4/public.m4
+++ b/source4/build/m4/public.m4
@@ -16,8 +16,6 @@ dnl SMB_EXT_LIB_FROM_PKGCONFIG(name,pkg-config name)
 dnl
 dnl SMB_EXT_LIB(name,libs,cflags,cppflags,ldflags)
 dnl
-dnl SMB_LIBRARY_ENABLE(name,default_build)
-dnl
 dnl SMB_BINARY_ENABLE(name,default_build)
 dnl
 dnl #######################################################
@@ -150,13 +148,6 @@ LDFLAGS = $5
 "
 ])
 
-dnl SMB_LIBRARY_ENABLE(name,default_build)
-AC_DEFUN([SMB_LIBRARY_ENABLE],
-[
-SMB_INFO_ENABLES="$SMB_INFO_ENABLES
-\$enabled{$1} = \"$2\";"
-])
-
 dnl SMB_BINARY_ENABLE(name,default_build)
 AC_DEFUN([SMB_BINARY_ENABLE],
 [
diff --git a/source4/lib/basic.mk b/source4/lib/basic.mk
index 3ed5381908..6debed79c9 100644
--- a/source4/lib/basic.mk
+++ b/source4/lib/basic.mk
@@ -55,6 +55,9 @@ INIT_OBJ_FILES = \
 OBJ_FILES = \
 		gencache.o \
 
+[SUBSYSTEM::MODULE]
+OBJ_FILES = module.o
+
 ##############################
 # Start SUBSYSTEM LIBBASIC
 [SUBSYSTEM::LIBBASIC]
diff --git a/source4/lib/ldb/config.m4 b/source4/lib/ldb/config.m4
index 2b251befbb..551bacf5c9 100644
--- a/source4/lib/ldb/config.m4
+++ b/source4/lib/ldb/config.m4
@@ -2,8 +2,3 @@ SMB_MODULE_DEFAULT(libldb_sqlite3,NOT)
 if test x"$with_sqlite3_support" = x"yes"; then
     SMB_MODULE_DEFAULT(libldb_sqlite3,STATIC)
 fi
-
-SMB_LIBRARY_ENABLE(libldb,NO)
-if test x"$experimental" = x"yes"; then
-	SMB_LIBRARY_ENABLE(libldb,YES)
-fi
diff --git a/source4/lib/module.c b/source4/lib/module.c
new file mode 100644
index 0000000000..b46d2b317c
--- /dev/null
+++ b/source4/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;
+}
diff --git a/source4/lib/registry/config.m4 b/source4/lib/registry/config.m4
index 27e55c63b4..ffea96c829 100644
--- a/source4/lib/registry/config.m4
+++ b/source4/lib/registry/config.m4
@@ -1,10 +1,4 @@
 # Registry backends
-                                                                                                                              
-if test t$BLDSHARED = ttrue; then
-    LIBWINREG_SHARED=bin/libwinregistry.$SHLIBEXT
-fi
-LIBWINREG=libwinregistry
-
 SMB_MODULE_DEFAULT(registry_gconf, NOT)
 
 SMB_EXT_LIB_FROM_PKGCONFIG(gconf, gconf-2.0)
@@ -16,7 +10,3 @@ AC_ARG_ENABLE(reg-gconf,
 		SMB_MODULE_DEFAULT(registry_gconf, STATIC)
 	fi
 ])
-
-if test x"$experimental" = x"yes"; then
-	SMB_LIBRARY_ENABLE(libwinregistry, YES)
-fi
diff --git a/source4/lib/tdb/config.m4 b/source4/lib/tdb/config.m4
index f1aa95df54..bf3949790a 100644
--- a/source4/lib/tdb/config.m4
+++ b/source4/lib/tdb/config.m4
@@ -5,8 +5,3 @@ AC_DEFINE([_GNU_SOURCE],[],[Pull in GNU extensions])
 
 AC_HAVE_DECL(pread, [#include <unistd.h>])
 AC_HAVE_DECL(pwrite, [#include <unistd.h>])
-
-if test x"$experimental" = x"yes"; then
-	SMB_LIBRARY_ENABLE(libtdb,YES)
-fi
-