summaryrefslogtreecommitdiff
path: root/source4/lib/module.c
diff options
context:
space:
mode:
Diffstat (limited to 'source4/lib/module.c')
-rw-r--r--source4/lib/module.c172
1 files changed, 0 insertions, 172 deletions
diff --git a/source4/lib/module.c b/source4/lib/module.c
deleted file mode 100644
index 80360e4e72..0000000000
--- a/source4/lib/module.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- module loading system
-
- Copyright (C) Jelmer Vernooij 2002-2004
-
- 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 "system/dir.h"
-#include "system/filesys.h"
-#include "dlinklist.h"
-
-#ifdef HAVE_DLOPEN
-
-/* Load module (or directory with modules) recursively.
- * Includes running the init_module() function */
-NTSTATUS smb_load_module(const char *module_name)
-{
- void *handle;
- init_module_function init;
- NTSTATUS status;
- const char *error;
- struct stat st;
- DIR *dir;
- struct dirent *dirent;
-
- if(stat(module_name, &st) < 0) {
- DEBUG(0, ("Can't stat module '%s'\n", module_name));
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- /* If the argument is a directory, recursively load all files /
- * directories in it */
-
- /* How about symlinks pointing to themselves - wouldn't we rather
- * want to use wildcards here? */
- if(S_ISDIR(st.st_mode)) {
- dir = opendir(module_name);
- while ((dirent = readdir(dir))) {
- smb_load_module(dirent->d_name);
- }
- }
-
- /* Always try to use LAZY symbol resolving; if the plugin has
- * backwards compatibility, there might be symbols in the
- * plugin referencing to old (removed) functions
- */
- handle = sys_dlopen(module_name, RTLD_LAZY);
-
- if(!handle) {
- DEBUG(0, ("Error loading module '%s': %s\n", module_name, sys_dlerror()));
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- init = (init_module_function)sys_dlsym(handle, "init_module");
-
- /* we must check sys_dlerror() to determine if it worked, because
- sys_dlsym() can validly return NULL */
- error = sys_dlerror();
- if (error) {
- DEBUG(0, ("Error trying to resolve symbol 'init_module' in %s: %s\n", module_name, error));
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- status = init();
-
- DEBUG(2, ("Module '%s' loaded\n", module_name));
-
- return status;
-}
-
-/* Load all modules in list and return number of
- * modules that has been successfully loaded */
-int smb_load_modules(const char **modules)
-{
- int i;
- int success = 0;
-
- for(i = 0; modules[i]; i++){
- if(NT_STATUS_IS_OK(smb_load_module(modules[i]))) {
- success++;
- }
- }
-
- DEBUG(2, ("%d modules successfully loaded\n", success));
-
- return success;
-}
-
-#else /* HAVE_DLOPEN */
-
-NTSTATUS smb_load_module(const char *module_name)
-{
- DEBUG(0,("This samba executable has not been built with plugin support\n"));
- return NT_STATUS_NOT_SUPPORTED;
-}
-
-int smb_load_modules(const char **modules)
-{
- DEBUG(0,("This samba executable has not been built with plugin support\n"));
- return -1;
-}
-
-#endif /* HAVE_DLOPEN */
-
-void init_modules(void)
-{
- if(lp_preload_modules())
- smb_load_modules(lp_preload_modules());
-}
-
-struct subsystem {
- char *name;
- register_backend_function callback;
- struct subsystem *prev, *next;
-};
-
-static struct subsystem *subsystems = NULL;
-
-NTSTATUS register_subsystem(const char *name, register_backend_function callback)
-{
- struct subsystem *s;
- struct subsystem *t = subsystems;
-
- while(t) {
- if(!strcmp(name, t->name)) {
- /* its already registered! */
- DEBUG(0,("Subsystem '%s' already registered\n", name));
- return NT_STATUS_OBJECT_NAME_COLLISION;
- }
- t = t->next;
- }
-
- s = smb_xmalloc(sizeof(struct subsystem));
-
- s->name = smb_xstrdup(name);
- s->callback = callback;
- s->prev = s->next = NULL;
-
- DLIST_ADD(subsystems, s);
-
- return NT_STATUS_OK;
-}
-
-NTSTATUS register_backend(const char *subsystem, const void *args)
-{
- /* Find the specified subsystem */
- struct subsystem *s = subsystems;
-
- while(s) {
- if(!strcmp(subsystem, s->name)) return s->callback(args);
- s = s->next;
- }
-
- DEBUG(0, ("Unable to register backend for subsystem '%s'\n", subsystem));
-
- return NT_STATUS_NOT_IMPLEMENTED;
-}