From: SooChan Lim <sc1.lim@samsung.com>
Date: Tue, 15 Jun 2021 04:20:42 +0000 (+0900)
Subject: tbm_module: check the bufmgr_func symbol at tbm_module_bufmgr_get_capabilities
X-Git-Tag: submit/tizen/20210617.053259~23
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F87%2F259887%2F1;p=platform%2Fcore%2Fuifw%2Flibtbm.git

tbm_module: check the bufmgr_func symbol at tbm_module_bufmgr_get_capabilities

This avoids a crash when the bufmgr_funcs does not have a symbol.

Change-Id: I27109d06403d974629badf17bc6ed8eb49cfd6cb
---

diff --git a/src/tbm_module.c b/src/tbm_module.c
index 1df44a8..d561406 100644
--- a/src/tbm_module.c
+++ b/src/tbm_module.c
@@ -461,6 +461,7 @@ int
 tbm_module_bufmgr_get_capabilities(tbm_module *module, tbm_error_e *error)
 {
 	int capabilities = 0;
+	tbm_backend_bufmgr_func *bufmgr_func = NULL;
 
 	TBM_RETURN_VAL_SET_ERR_IF_FAIL(module, TBM_BUFMGR_CAPABILITY_NONE, *error, TBM_ERROR_INVALID_PARAMETER);
 
@@ -469,11 +470,16 @@ tbm_module_bufmgr_get_capabilities(tbm_module *module, tbm_error_e *error)
 		capabilities = hal_tbm_bufmgr_get_capabilities(module->hal_bufmgr, (hal_tbm_error *)error);
 		break;
 	case TBM_MODULE_TYPE_TBM_BACKEND:
+		bufmgr_func = module->bufmgr_func;
+		TBM_RETURN_VAL_SET_ERR_IF_FAIL(bufmgr_func, 0, *error, TBM_ERROR_INVALID_OPERATION);
+		TBM_RETURN_VAL_SET_ERR_IF_FAIL(bufmgr_func->bufmgr_get_capabilities, 0, *error, TBM_ERROR_NOT_SUPPORTED);
+
 		capabilities = module->bufmgr_func->bufmgr_get_capabilities(module->bufmgr_data, error);
 		break;
 	case TBM_MODULE_TYPE_BUFMGR_BACKEND:
 		TBM_WRN("!!WARNING: This backend interface will be DEPRECATED after Tizen 7.0.");
 		TBM_ERR("Do not support at tbm_bufmgr_backend.");
+
 		*error = TBM_ERROR_NOT_SUPPORTED;
 		break;
 	default: