| 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) 2011-2017 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 | #ifndef _VDIoRnd_h__
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| 18 | #define _VDIoRnd_h__
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| 19 |
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| 20 | /** Pointer to the I/O random number generator. */
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| 21 | typedef struct VDIORND *PVDIORND;
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| 22 | /** Pointer to a I/O random number generator pointer. */
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| 23 | typedef PVDIORND *PPVDIORND;
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| 24 |
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| 25 | /**
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| 26 | * Creates a I/O RNG.
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| 27 | *
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| 28 | * @returns VBox status code.
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| 29 | *
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| 30 | * @param ppIoRnd Where to store the handle on success.
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| 31 | * @param cbPattern Size of the test pattern to create.
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| 32 | * @param uSeed Seed for the RNG.
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| 33 | */
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| 34 | int VDIoRndCreate(PPVDIORND ppIoRnd, size_t cbPattern, uint64_t uSeed);
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| 35 |
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| 36 | /**
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| 37 | * Destroys the I/O RNG.
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| 38 | *
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| 39 | * @param pIoRnd I/O RNG handle.
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| 40 | */
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| 41 | void VDIoRndDestroy(PVDIORND pIoRnd);
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| 42 |
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| 43 | /**
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| 44 | * Returns a pointer filled with random data of the given size.
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| 45 | *
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| 46 | * @returns VBox status code.
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| 47 | *
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| 48 | * @param pIoRnd I/O RNG handle.
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| 49 | * @param ppv Where to store the pointer on success.
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| 50 | * @param cb Size of the buffer.
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| 51 | */
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| 52 | int VDIoRndGetBuffer(PVDIORND pIoRnd, void **ppv, size_t cb);
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| 53 |
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| 54 | uint32_t VDIoRndGetU32Ex(PVDIORND pIoRnd, uint32_t uMin, uint32_t uMax);
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| 55 | #endif /* _VDIoRnd_h__ */
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