s3:services_db: make svcctl_lookup_dispname() use a temp talloc ctx

diff --git a/source3/services/services_db.c b/source3/services/services_db.c
index 118091f68261f05f667d9000b701de099cf35b47..ee565001584d80e2e178f07e72216e420ea71723 100644 (file)
--- a/source3/services/services_db.c
+++ b/source3/services/services_db.c
@@ -629,26 +629,23 @@ const char *svcctl_lookup_dispname(TALLOC_CTX *ctx, const char *name, struct sec
        char *path = NULL;
        WERROR wresult;
        DATA_BLOB blob;
+       TALLOC_CTX *mem_ctx = talloc_stackframe();
 
-       /* now add the security descriptor */
-
-       if (asprintf(&path, "%s\\%s", KEY_SERVICES, name) < 0) {
-               return NULL;
+       path = talloc_asprintf(mem_ctx, "%s\\%s", KEY_SERVICES, name);
+       if (path == NULL) {
+               goto done;
        }
-       wresult = regkey_open_internal( NULL, &key, path, token,
+       wresult = regkey_open_internal(mem_ctx, &key, path, token,
                                        REG_KEY_READ );
        if ( !W_ERROR_IS_OK(wresult) ) {
                DEBUG(0,("svcctl_lookup_dispname: key lookup failed! [%s] (%s)\n", 
                        path, win_errstr(wresult)));
-               SAFE_FREE(path);
                goto fail;
        }
-       SAFE_FREE(path);
 
        wresult = regval_ctr_init(key, &values);
        if (!W_ERROR_IS_OK(wresult)) {
                DEBUG(0,("svcctl_lookup_dispname: talloc() failed!\n"));
-               TALLOC_FREE( key );
                goto fail;
        }
 
@@ -660,14 +657,15 @@ const char *svcctl_lookup_dispname(TALLOC_CTX *ctx, const char *name, struct sec
        blob = data_blob_const(regval_data_p(val), regval_size(val));
        pull_reg_sz(ctx, &blob, &display_name);
 
-       TALLOC_FREE( key );
-
-       return display_name;
+       goto done;
 
 fail:
        /* default to returning the service name */
-       TALLOC_FREE( key );
-       return talloc_strdup(ctx, name);
+       display_name = talloc_strdup(ctx, name);
+
+done:
+       talloc_free(mem_ctx);
+       return display_name;
 }
 
 /********************************************************************