-static int
-_check_version(TBMModuleVersionInfo *data)
-{
- int backend_module_major, backend_module_minor;
- int tbm_backend_major, tbm_backend_minor;
-
- backend_module_major = GET_ABI_MAJOR(data->abiversion);
- backend_module_minor = GET_ABI_MINOR(data->abiversion);
-
- TBM_DBG("TBM module %s: vendor=\"%s\" ABI=%d,%d\n",
- data->modname ? data->modname : "UNKNOWN!",
- data->vendor ? data->vendor : "UNKNOWN!", backend_module_major, backend_module_minor);
-
- tbm_backend_major = GET_ABI_MAJOR(TBM_ABI_VERSION);
- tbm_backend_minor = GET_ABI_MINOR(TBM_ABI_VERSION);
-
- TBM_DBG("TBM ABI version %d.%d\n",
- tbm_backend_major, tbm_backend_minor);
-
- if (backend_module_major != tbm_backend_major) {
- TBM_ERR("TBM module ABI major ver(%d) doesn't match the TBM's ver(%d)\n",
- backend_module_major, tbm_backend_major);
- return 0;
- } else if (backend_module_minor > tbm_backend_minor) {
- TBM_ERR("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
- backend_module_minor, tbm_backend_minor);
- return 0;
- }
-
- return 1;
-}
-
-static int
-_tbm_backend_check_bufmgr_func(tbm_backend_bufmgr_func *bufmgr_func)
-{
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_capabilities, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_bind_native_display, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_supported_formats, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_plane_data, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_alloc_bo, 0); /* mandatory symbol */
- if (!bufmgr_func->bufmgr_alloc_bo_with_format)
- TBM_DBG("No bufmgr_func->bufmgr_alloc_bo_with_format.");
- TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_import_fd, 0); /* mandatory symbol */
- if (!bufmgr_func->bufmgr_import_key)
- TBM_DBG("No bufmgr_func->bo_export_key.");
-
- return 1;
-}
-
-static int
-_tbm_backend_check_bufmgr_bo(tbm_backend_bo_func *bo_func)
-{
- TBM_RETURN_VAL_IF_FAIL(bo_func, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_free, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_size, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_memory_types, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_handle, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_map, 0); /* mandatory symbol */
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_unmap, 0); /* mandatory symbol */
- if (!bo_func->bo_lock)
- TBM_DBG("No bo_func->bo_lock.");
- if (!bo_func->bo_unlock)
- TBM_DBG("No bo_func->bo_unlock.");
- TBM_RETURN_VAL_IF_FAIL(bo_func->bo_export_fd, 0); /* mandatory symbol */
- if (!bo_func->bo_export_key)
- TBM_INFO("No bo_func->bo_export_key.");
-
- return 1;
-}
-
-static int
-_tbm_backend_load_module(tbm_bufmgr bufmgr, const char *file)
-{
- char path[PATH_MAX] = {0, };
- void *module_data = NULL;
- tbm_backend_module *backend_module_data = NULL;
- tbm_backend_bufmgr_data *bufmgr_data = NULL;
- int backend_module_major, backend_module_minor;
- int tbm_backend_major, tbm_backend_minor;
- tbm_error_e error;
-
- snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
-
- module_data = dlopen(path, RTLD_LAZY);
- if (!module_data) {
- TBM_ERR("failed to load module: %s(%s)\n", dlerror(), file);
- return 0;
- }
-
- backend_module_data = dlsym(module_data, "tbm_backend_module_data");
- if (!backend_module_data) {
- TBM_ERR("Error: module does not have data object.\n");
- goto err;
- }
-
- tbm_backend_major = GET_ABI_MAJOR(TBM_BACKEND_ABI_LATEST_VERSION);
- tbm_backend_minor = GET_ABI_MINOR(TBM_BACKEND_ABI_LATEST_VERSION);
- TBM_INFO("TBM Backend ABI version %d.%d\n", tbm_backend_major, tbm_backend_minor);
-
- backend_module_major = GET_ABI_MAJOR(backend_module_data->abi_version);
- backend_module_minor = GET_ABI_MINOR(backend_module_data->abi_version);
-
- TBM_INFO("TBM module %s: vendor=\"%s\" Backend ABI version=%d.%d\n",
- backend_module_data->name ? backend_module_data->name : "UNKNOWN!",
- backend_module_data->vendor ? backend_module_data->vendor : "UNKNOWN!",
- backend_module_major, backend_module_minor);
-
- if (backend_module_major > tbm_backend_major) {
- TBM_ERR("TBM module ABI major ver(%d) is newer than the TBM's ver(%d)\n",
- backend_module_major, tbm_backend_major);
- goto err;
- } else if (backend_module_minor > tbm_backend_minor) {
- TBM_ERR("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
- backend_module_minor, tbm_backend_minor);
- goto err;
- }
-
- if (!backend_module_data->init) {
- TBM_ERR("Error: module does not supply init symbol.\n");
- goto err;
- }
-
- if (!backend_module_data->deinit) {
- TBM_ERR("Error: module does not supply deinit symbol.\n");
- goto err;
- }
-
- bufmgr_data = backend_module_data->init(bufmgr, &error);
- if (!bufmgr_data) {
- TBM_ERR("Fail to init module(%s)\n", file);
- goto err;
- }
-
- /* check the mandatory symbols of the backend module */
- if (!_tbm_backend_check_bufmgr_func(bufmgr->bufmgr_func)) {
- TBM_ERR("Fail to check the bufmgr_func symboles.");
- goto err;
- }
-
- if (!_tbm_backend_check_bufmgr_bo(bufmgr->bo_func)) {
- TBM_ERR("Fail to check the bufmgr_bo symboles.");
- goto err;
- }
-
- /* get the capability */
- bufmgr->capabilities = bufmgr->bufmgr_func->bufmgr_get_capabilities(bufmgr_data, &error);
- if (bufmgr->capabilities == TBM_BUFMGR_CAPABILITY_NONE) {
- TBM_ERR("The capabilities of the backend module is TBM_BUFMGR_CAPABILITY_NONE.");
- TBM_ERR("TBM_BUFMGR_CAPABILITY_SHARE_FD is the essential capability.");
- goto err;
- }
-
- if (!(bufmgr->capabilities & TBM_BUFMGR_CAPABILITY_SHARE_FD)) {
- TBM_ERR("The capabilities of the backend module had no TBM_BUFMGR_CAPABILITY_SHARE_FD.");
- TBM_ERR("The tbm backend has to get TBM_BUFMGR_CAPABILITY_SHARE_FD. ");
- goto err;
- }
-
- bufmgr->module_data = module_data;
- bufmgr->backend_module_data = backend_module_data;
- bufmgr->bufmgr_data = bufmgr_data;
-
- TBM_INFO("Success to load module(%s)\n", file);
-
- return 1;
-
-err:
- if (bufmgr_data)
- bufmgr->backend_module_data->deinit(bufmgr_data);
- if (module_data)
- dlclose(module_data);
-
- return 0;
-}
-
-static int
-_tbm_bufmgr_load_module(tbm_bufmgr bufmgr, int fd, const char *file)
-{
- char path[PATH_MAX] = {0, };
- TBMModuleVersionInfo *vers;
- TBMModuleData *initdata;
- ModuleInitProc init;
- void *module_data;
-
- snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
-
- module_data = dlopen(path, RTLD_LAZY);
- if (!module_data) {
- TBM_ERR("failed to load module: %s(%s)\n", dlerror(), file);
- return 0;
- }
-
- initdata = dlsym(module_data, "tbmModuleData");
- if (!initdata) {
- TBM_ERR("Error: module does not have data object.\n");
- goto err;
- }
-
- vers = initdata->vers;
- if (!vers) {
- TBM_ERR("Error: module does not supply version information.\n");
- goto err;
- }
-
- init = initdata->init;
- if (!init) {
- TBM_ERR("Error: module does not supply init symbol.\n");
- goto err;
- }
-
- if (!_check_version(vers)) {
- TBM_ERR("Fail to check version.\n");
- goto err;
- }
-
- if (!init(bufmgr, fd)) {
- TBM_ERR("Fail to init module(%s)\n", file);
- goto err;
- }
-
- if (!bufmgr->backend || !bufmgr->backend->priv) {
- TBM_ERR("Error: module(%s) wrong operation. Check backend or backend's priv.\n", file);
- goto err;
- }
-
- bufmgr->module_data = module_data;
-
- TBM_DBG("Success to load module(%s)\n", file);
-
- return 1;
-
-err:
- dlclose(module_data);
- return 0;
-}
-
-static int
-_tbm_load_module(tbm_bufmgr bufmgr, int fd)
-{
- struct dirent **namelist;
- int ret = 0, n;
-
- /* try to load the new backend module */
- ret = _tbm_backend_load_module(bufmgr, DEFAULT_LIB);
- if (ret)
- return 1;
-
- /* try to load the old(deprecated) backend mdoule */
- ret = _tbm_bufmgr_load_module(bufmgr, fd, DEFAULT_LIB);
- if (ret)
- return 1;
-
- /* load bufmgr priv from configured path */
- n = scandir(BUFMGR_MODULE_DIR, &namelist, 0, alphasort);
- if (n < 0) {
- TBM_ERR("no files : %s\n", BUFMGR_MODULE_DIR);
- return 0;
- }
-
- while (n--) {
- if (!ret && strstr(namelist[n]->d_name, PREFIX_LIB)) {
- const char *p = strstr(namelist[n]->d_name, SUFFIX_LIB);
-
- if (p && !strcmp(p, SUFFIX_LIB)) {
- ret = _tbm_backend_load_module(bufmgr, namelist[n]->d_name);
- if (!ret)
- ret = _tbm_bufmgr_load_module(bufmgr, fd,
- namelist[n]->d_name);
- }
- }
-
- free(namelist[n]);
- }
-
- free(namelist);
-
- return ret;
-}