lib: param: Remove lpcfg_register_defaults_hook().

Completely unused functionality. Gets rid of another
talloc_autofree_context(). Updated WHATSNEW to make
this clear.

Signed-off-by: Jeremy Allison <[email protected]>
Reviewed-by: Alexander Bokovoy <[email protected]>

WHATSNEW.txt

@@ -50,6 +50,16 @@ smb.conf changes
   map untrusted to domain       Deprecated
   strict sync                   Default changed         yes
 
+Removal of lpcfg_register_defaults_hook()
+-----------------------------------------
+
+The undocumented and unsupported function lpcfg_register_defaults_hook()
+that was used by external projects to call into Samba and modify
+smb.conf default parameter settings has been removed. If your project
+was using this call please raise the issue on
+[email protected] in order to design a supported
+way of obtaining the same functionality.
+
 KNOWN ISSUES
 ============
 

lib/param/loadparm.c

@@ -2551,23 +2551,6 @@ static int lpcfg_destructor(struct loadparm_context *lp_ctx)
 	return 0;
 }
 
-struct defaults_hook_data {
-	const char *name;
-	lpcfg_defaults_hook hook;
-	struct defaults_hook_data *prev, *next;
-} *defaults_hooks = NULL;
-
-
-bool lpcfg_register_defaults_hook(const char *name, lpcfg_defaults_hook hook)
-{
-	struct defaults_hook_data *hook_data = talloc(talloc_autofree_context(),
-												  struct defaults_hook_data);
-	hook_data->name = talloc_strdup(hook_data, name);
-	hook_data->hook = hook;
-	DLIST_ADD(defaults_hooks, hook_data);
-	return false;
-}
-
 /**
  * Initialise the global parameter structure.
  *
@@ -2580,7 +2563,6 @@ struct loadparm_context *loadparm_init(TALLOC_CTX *mem_ctx)
 	struct loadparm_context *lp_ctx;
 	struct parmlist_entry *parm;
 	char *logfile;
-	struct defaults_hook_data *defaults_hook;
 
 	lp_ctx = talloc_zero(mem_ctx, struct loadparm_context);
 	if (lp_ctx == NULL)
@@ -3004,20 +2986,6 @@ struct loadparm_context *loadparm_init(TALLOC_CTX *mem_ctx)
 				  "rpc server dynamic port range",
 				  "49152-65535");
 
-	/* Allow modules to adjust defaults */
-	for (defaults_hook = defaults_hooks; defaults_hook;
-		 defaults_hook = defaults_hook->next) {
-		bool ret;
-
-		ret = defaults_hook->hook(lp_ctx);
-		if (!ret) {
-			DEBUG(1, ("Defaults hook %s failed to run.",
-					  defaults_hook->name));
-			talloc_free(lp_ctx);
-			return NULL;
-		}
-	}
-
 	for (i = 0; parm_table[i].label; i++) {
 		if (!(lp_ctx->flags[i] & FLAG_CMDLINE)) {
 			lp_ctx->flags[i] |= FLAG_DEFAULT;

lib/param/param.h

@@ -47,8 +47,6 @@ struct gensec_settings;
 struct bitmap;
 struct file_lists;
 
-typedef bool (*lpcfg_defaults_hook) (struct loadparm_context *);
-
 #ifdef CONFIG_H_IS_FROM_SAMBA
 #include "lib/param/param_proto.h"
 #include "lib/param/param_functions.h"
@@ -216,20 +214,6 @@ const char *lpcfg_socket_options(struct loadparm_context *);
 struct dcerpc_server_info *lpcfg_dcerpc_server_info(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx);
 struct gensec_settings *lpcfg_gensec_settings(TALLOC_CTX *, struct loadparm_context *);
 
-/* Hooks to override defaults.
- *
- * Every time a loadparm context is initialized, the hooks are
- * called on it, once Samba itself has set defaults.
- *
- * This allows modules to tweak defaults (before any smb.conf file or registry
- * is loaded). Usually they would do this by calling lpcfg_do_global_parameter
- * or lpcfg_do_service_parameter.
- *
- * A good use case for this is OpenChange, which by default enables its
- * DCE/RPC services when it is installed.
- * */
-bool lpcfg_register_defaults_hook(const char *name, lpcfg_defaults_hook hook);
-
 /* The following definitions come from param/util.c  */