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- /* Copyright (C) 2019 Intel Corporation
- This file is part of Graphene Library OS.
- Graphene Library OS is free software: you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License
- as published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
- Graphene Library OS 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 Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- /*
- * db_eventfd.c
- *
- * This file contains operations to handle streams with URIs that have "eventfd:".
- */
- #include "api.h"
- #include "pal.h"
- #include "pal_defs.h"
- #include "pal_error.h"
- #include "pal_internal.h"
- /* `type` must be eventfd, `uri` & `access` & `share` are unused, `create` holds eventfd's initval,
- * `options` holds eventfd's flags */
- static int eventfd_pal_open(PAL_HANDLE* handle, const char* type, const char* uri, int access,
- int share, int create, int options) {
- return -PAL_ERROR_NOTIMPLEMENTED;
- }
- /* offset does not apply here. */
- static int64_t eventfd_pal_read(PAL_HANDLE handle, uint64_t offset, uint64_t len, void* buffer) {
- return -PAL_ERROR_NOTIMPLEMENTED;
- }
- /* offset does not apply here. */
- static int64_t eventfd_pal_write(PAL_HANDLE handle, uint64_t offset, uint64_t len,
- const void* buffer) {
- return -PAL_ERROR_NOTIMPLEMENTED;
- }
- /* gets used for polling(query) on eventfd from LibOS. */
- static int eventfd_pal_attrquerybyhdl(PAL_HANDLE handle, PAL_STREAM_ATTR* attr) {
- return -PAL_ERROR_NOTIMPLEMENTED;
- }
- static int eventfd_pal_close(PAL_HANDLE handle) {
- return -PAL_ERROR_NOTIMPLEMENTED;
- }
- struct handle_ops eventfd_ops = {
- .open = &eventfd_pal_open,
- .read = &eventfd_pal_read,
- .write = &eventfd_pal_write,
- .close = &eventfd_pal_close,
- .attrquerybyhdl = &eventfd_pal_attrquerybyhdl,
- };
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