1 | /** @file
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2 | *
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3 | * VBox HDD container test utility - I/O data generator.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2011-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | #ifndef VBOX_INCLUDED_SRC_testcase_VDIoRnd_h
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29 | #define VBOX_INCLUDED_SRC_testcase_VDIoRnd_h
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30 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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31 | # pragma once
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32 | #endif
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33 |
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34 | /** Pointer to the I/O random number generator. */
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35 | typedef struct VDIORND *PVDIORND;
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36 | /** Pointer to a I/O random number generator pointer. */
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37 | typedef PVDIORND *PPVDIORND;
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38 |
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39 | /**
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40 | * Creates a I/O RNG.
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41 | *
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42 | * @returns VBox status code.
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43 | *
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44 | * @param ppIoRnd Where to store the handle on success.
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45 | * @param cbPattern Size of the test pattern to create.
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46 | * @param uSeed Seed for the RNG.
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47 | */
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48 | int VDIoRndCreate(PPVDIORND ppIoRnd, size_t cbPattern, uint64_t uSeed);
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49 |
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50 | /**
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51 | * Destroys the I/O RNG.
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52 | *
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53 | * @param pIoRnd I/O RNG handle.
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54 | */
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55 | void VDIoRndDestroy(PVDIORND pIoRnd);
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56 |
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57 | /**
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58 | * Returns a pointer filled with random data of the given size.
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59 | *
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60 | * @returns VBox status code.
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61 | *
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62 | * @param pIoRnd I/O RNG handle.
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63 | * @param ppv Where to store the pointer on success.
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64 | * @param cb Size of the buffer.
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65 | */
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66 | int VDIoRndGetBuffer(PVDIORND pIoRnd, void **ppv, size_t cb);
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67 |
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68 | uint32_t VDIoRndGetU32Ex(PVDIORND pIoRnd, uint32_t uMin, uint32_t uMax);
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69 | #endif /* !VBOX_INCLUDED_SRC_testcase_VDIoRnd_h */
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