| 1 | /* $Id: RTFileQueryFsSizes-nt.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTFileQueryFsSizes, Native NT.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2017 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 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_FILE
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| 32 | #include "internal-r3-nt.h"
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| 33 |
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| 34 | #include <iprt/file.h>
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| 35 | #include <iprt/err.h>
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| 36 |
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| 37 |
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| 38 |
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| 39 | RTR3DECL(int) RTFileQueryFsSizes(RTFILE hFile, PRTFOFF pcbTotal, RTFOFF *pcbFree,
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| 40 | uint32_t *pcbBlock, uint32_t *pcbSector)
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| 41 | {
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| 42 | int rc;
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| 43 |
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| 44 | /*
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| 45 | * Get the volume information.
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| 46 | */
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| 47 | FILE_FS_SIZE_INFORMATION FsSizeInfo;
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| 48 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
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| 49 | NTSTATUS rcNt = NtQueryVolumeInformationFile((HANDLE)RTFileToNative(hFile), &Ios,
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| 50 | &FsSizeInfo, sizeof(FsSizeInfo), FileFsSizeInformation);
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| 51 | if (NT_SUCCESS(rcNt))
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| 52 | {
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| 53 | /*
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| 54 | * Calculate the return values.
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| 55 | */
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| 56 | if (pcbTotal)
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| 57 | {
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| 58 | *pcbTotal = FsSizeInfo.TotalAllocationUnits.QuadPart
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| 59 | * FsSizeInfo.SectorsPerAllocationUnit
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| 60 | * FsSizeInfo.BytesPerSector;
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| 61 | if ( *pcbTotal / FsSizeInfo.SectorsPerAllocationUnit / FsSizeInfo.BytesPerSector
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| 62 | != FsSizeInfo.TotalAllocationUnits.QuadPart)
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| 63 | *pcbTotal = UINT64_MAX;
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| 64 | }
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| 65 |
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| 66 | if (pcbFree)
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| 67 | {
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| 68 | *pcbFree = FsSizeInfo.AvailableAllocationUnits.QuadPart
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| 69 | * FsSizeInfo.SectorsPerAllocationUnit
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| 70 | * FsSizeInfo.BytesPerSector;
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| 71 | if ( *pcbFree / FsSizeInfo.SectorsPerAllocationUnit / FsSizeInfo.BytesPerSector
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| 72 | != FsSizeInfo.AvailableAllocationUnits.QuadPart)
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| 73 | *pcbFree = UINT64_MAX;
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| 74 | }
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| 75 |
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| 76 | rc = VINF_SUCCESS;
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| 77 | if (pcbBlock)
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| 78 | {
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| 79 | *pcbBlock = FsSizeInfo.SectorsPerAllocationUnit * FsSizeInfo.BytesPerSector;
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| 80 | if (*pcbBlock / FsSizeInfo.BytesPerSector != FsSizeInfo.SectorsPerAllocationUnit)
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| 81 | rc = VERR_OUT_OF_RANGE;
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| 82 | }
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| 83 |
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| 84 | if (pcbSector)
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| 85 | *pcbSector = FsSizeInfo.BytesPerSector;
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| 86 | }
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| 87 | else
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| 88 | rc = RTErrConvertFromNtStatus(rcNt);
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| 89 |
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| 90 | return rc;
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| 91 | }
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| 92 |
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