| 1 | /** $Id: VDIoBackend.h 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | *
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| 4 | * VBox HDD container test utility, async I/O backend
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2013-2022 Oracle and/or its affiliates.
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| 9 | *
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| 10 | * This file is part of VirtualBox base platform packages, as
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| 11 | * available from https://www.virtualbox.org.
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| 12 | *
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| 13 | * This program is free software; you can redistribute it and/or
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| 14 | * modify it under the terms of the GNU General Public License
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| 15 | * as published by the Free Software Foundation, in version 3 of the
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| 16 | * License.
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| 17 | *
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| 18 | * This program is distributed in the hope that it will be useful, but
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| 19 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 21 | * General Public License for more details.
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| 22 | *
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| 23 | * You should have received a copy of the GNU General Public License
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| 24 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 25 | *
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| 26 | * SPDX-License-Identifier: GPL-3.0-only
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| 27 | */
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| 28 |
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| 29 | #ifndef VBOX_INCLUDED_SRC_testcase_VDIoBackend_h
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| 30 | #define VBOX_INCLUDED_SRC_testcase_VDIoBackend_h
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| 31 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 32 | # pragma once
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| 33 | #endif
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| 34 |
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| 35 | #include <iprt/sg.h>
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| 36 |
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| 37 | #include "VDDefs.h"
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| 38 |
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| 39 | /** I/O backend handle. */
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| 40 | typedef struct VDIOBACKEND *PVDIOBACKEND;
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| 41 | /** Pointer to a I/O backend handle. */
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| 42 | typedef PVDIOBACKEND *PPVDIOBACKEND;
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| 43 |
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| 44 | /** Storage handle. */
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| 45 | typedef struct VDIOSTORAGE *PVDIOSTORAGE;
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| 46 | /** Pointer to a storage handle. */
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| 47 | typedef PVDIOSTORAGE *PPVDIOSTORAGE;
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| 48 |
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| 49 | /**
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| 50 | * Completion handler.
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| 51 | *
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| 52 | * @returns nothing.
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| 53 | * @param pvUser Opaque user data.
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| 54 | * @param rcReq Completion code for the request.
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| 55 | */
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| 56 | typedef DECLCALLBACKTYPE(int, FNVDIOCOMPLETE,(void *pvUser, int rcReq));
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| 57 | /** Pointer to a completion handler. */
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| 58 | typedef FNVDIOCOMPLETE *PFNVDIOCOMPLETE;
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| 59 |
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| 60 | /**
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| 61 | * Creates a new memory I/O backend.
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| 62 | *
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| 63 | * @returns IPRT status code.
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| 64 | *
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| 65 | * @param ppIoBackend Where to store the handle on success.
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| 66 | */
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| 67 | int VDIoBackendCreate(PPVDIOBACKEND ppIoBackend);
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| 68 |
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| 69 | /**
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| 70 | * Destroys a memory I/O backend.
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| 71 | *
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| 72 | * @returns nothing.
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| 73 | *
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| 74 | * @param pIoBackend The backend to destroy.
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| 75 | */
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| 76 | void VDIoBackendDestroy(PVDIOBACKEND pIoBackend);
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| 77 |
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| 78 | int VDIoBackendStorageCreate(PVDIOBACKEND pIoBackend, const char *pszBackend,
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| 79 | const char *pszName, PFNVDIOCOMPLETE pfnComplete,
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| 80 | PPVDIOSTORAGE ppIoStorage);
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| 81 |
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| 82 | void VDIoBackendStorageDestroy(PVDIOSTORAGE pIoStorage);
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| 83 |
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| 84 | int VDIoBackendStorageSetSize(PVDIOSTORAGE pIoStorage, uint64_t cbSize);
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| 85 |
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| 86 | int VDIoBackendStorageGetSize(PVDIOSTORAGE pIoStorage, uint64_t *pcbSize);
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| 87 |
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| 88 | DECLHIDDEN(int) VDIoBackendDumpToFile(PVDIOSTORAGE pIoStorage, const char *pszPath);
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| 89 |
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| 90 | /**
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| 91 | * Enqueues a new I/O request.
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| 92 | *
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| 93 | * @returns IPRT status code.
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| 94 | *
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| 95 | * @param pIoStorage Storage handle.
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| 96 | * @param enmTxDir The transfer direction.
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| 97 | * @param off Start offset of the transfer.
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| 98 | * @param cbTransfer Size of the transfer.
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| 99 | * @param pSgBuf S/G buffer to use.
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| 100 | * @param pvUser Opaque user data.
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| 101 | * @param fSync Flag whether to wait for the operation to complete.
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| 102 | */
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| 103 | int VDIoBackendTransfer(PVDIOSTORAGE pIoStorage, VDIOTXDIR enmTxDir, uint64_t off,
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| 104 | size_t cbTransfer, PRTSGBUF pSgBuf, void *pvUser, bool fSync);
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| 105 |
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| 106 | #endif /* !VBOX_INCLUDED_SRC_testcase_VDIoBackend_h */
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