Revert making public of the samba-module library.

This library was tiny - containing just two public functions than were
themselves trivial. The amount of overhead this causes isn't really worth the
benefits of sharing the code with other projects like OpenChange. In addition, this code
isn't really generically useful anyway, as it can only load from the module path
set for Samba at configure time.

Adding a new library was breaking the API/ABI anyway, so OpenChange had to be
updated to cope with the new situation one way or another. I've added a simpler
(compatible) routine for loading modules to OpenChange, which is less than 100 lines of code.

Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Dec  3 08:36:33 CET 2011 on sn-devel-104

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/util/samba_modules.h b/lib/util/samba_modules.h
new file mode 100644
index 0000000000..5eb2a0dd1c
--- /dev/null
+++ b/lib/util/samba_modules.h
@@ -0,0 +1,59 @@
+/*
+   Unix SMB/CIFS implementation.
+   Handling of idle/exit events
+   Copyright (C) Stefan (metze) Metzmacher	2003
+   Copyright (C) Andrew Bartlett 2011
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SAMBA_MODULES_H
+#define _SAMBA_MODULES_H
+
+/* Module support */
+typedef NTSTATUS (*init_module_fn) (void);
+
+NTSTATUS samba_init_module(void);
+
+/* this needs to be a string which is not in the C library. We
+   previously used "init_module", but that meant that modules which
+   did not define this function ended up calling the C library
+   function init_module() which makes a system call */
+#define SAMBA_INIT_MODULE "samba_init_module"
+
+/**
+ * Obtain the init function from a shared library file.  
+ *
+ * The handle to dlclose() in case of error is returns in *handle if handle is not NULL
+ */
+init_module_fn load_module(const char *path, bool is_probe, void **handle);
+
+/**
+ * Run the specified init functions.
+ *
+ * @return true if all functions ran successfully, false otherwise
+ */
+bool run_init_functions(init_module_fn *fns);
+
+/**
+ * Load the initialization functions from DSO files for a specific subsystem.
+ *
+ * Will return an array of function pointers to initialization functions
+ */
+init_module_fn *load_samba_modules(TALLOC_CTX *mem_ctx, const char *subsystem);
+
+int smb_load_modules(const char **modules);
+NTSTATUS smb_probe_module(const char *subsystem, const char *module);
+
+#endif /* _SAMBA_MODULES_H */