c1c9242f0046150566414e1f222cb667e03e605evboxsync/* $Id$ */
c1c9242f0046150566414e1f222cb667e03e605evboxsync/** @file
c1c9242f0046150566414e1f222cb667e03e605evboxsync * IPRT Filesystem API (Filesystem) - generic code.
c1c9242f0046150566414e1f222cb667e03e605evboxsync */
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync/*
c1c9242f0046150566414e1f222cb667e03e605evboxsync * Copyright (C) 2012 Oracle Corporation
c1c9242f0046150566414e1f222cb667e03e605evboxsync *
c1c9242f0046150566414e1f222cb667e03e605evboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
c1c9242f0046150566414e1f222cb667e03e605evboxsync * available from http://www.virtualbox.org. This file is free software;
c1c9242f0046150566414e1f222cb667e03e605evboxsync * you can redistribute it and/or modify it under the terms of the GNU
c1c9242f0046150566414e1f222cb667e03e605evboxsync * General Public License (GPL) as published by the Free Software
c1c9242f0046150566414e1f222cb667e03e605evboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
c1c9242f0046150566414e1f222cb667e03e605evboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
c1c9242f0046150566414e1f222cb667e03e605evboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
c1c9242f0046150566414e1f222cb667e03e605evboxsync *
c1c9242f0046150566414e1f222cb667e03e605evboxsync * The contents of this file may alternatively be used under the terms
c1c9242f0046150566414e1f222cb667e03e605evboxsync * of the Common Development and Distribution License Version 1.0
c1c9242f0046150566414e1f222cb667e03e605evboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
c1c9242f0046150566414e1f222cb667e03e605evboxsync * VirtualBox OSE distribution, in which case the provisions of the
c1c9242f0046150566414e1f222cb667e03e605evboxsync * CDDL are applicable instead of those of the GPL.
c1c9242f0046150566414e1f222cb667e03e605evboxsync *
c1c9242f0046150566414e1f222cb667e03e605evboxsync * You may elect to license modified versions of this file under the
c1c9242f0046150566414e1f222cb667e03e605evboxsync * terms and conditions of either the GPL or the CDDL or both.
c1c9242f0046150566414e1f222cb667e03e605evboxsync */
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync/*******************************************************************************
c1c9242f0046150566414e1f222cb667e03e605evboxsync* Header Files *
c1c9242f0046150566414e1f222cb667e03e605evboxsync*******************************************************************************/
c1c9242f0046150566414e1f222cb667e03e605evboxsync#define LOG_GROUP LOG_GROUP_DEFAULT
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/types.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/assert.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/mem.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/filesystem.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/err.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/asm.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/string.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include <iprt/list.h>
c1c9242f0046150566414e1f222cb667e03e605evboxsync#include "internal/filesystem.h"
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync/*******************************************************************************
c1c9242f0046150566414e1f222cb667e03e605evboxsync* Global variables *
c1c9242f0046150566414e1f222cb667e03e605evboxsync*******************************************************************************/
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync/**
c1c9242f0046150566414e1f222cb667e03e605evboxsync * Supported volume formats.
c1c9242f0046150566414e1f222cb667e03e605evboxsync */
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsyncstatic PCRTFILESYSTEMDESC g_aFsFmts[] =
c1c9242f0046150566414e1f222cb667e03e605evboxsync{
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync &g_rtFsExt
c1c9242f0046150566414e1f222cb667e03e605evboxsync};
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsyncstatic int rtFsGetFormat(RTVFSFILE hVfsFile, PCRTFILESYSTEMDESC *ppFsDesc)
c1c9242f0046150566414e1f222cb667e03e605evboxsync{
c1c9242f0046150566414e1f222cb667e03e605evboxsync int rc = VINF_SUCCESS;
c1c9242f0046150566414e1f222cb667e03e605evboxsync uint32_t uScoreMax = RTFILESYSTEM_MATCH_SCORE_UNSUPPORTED;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync PCRTFILESYSTEMDESC pFsFmtMatch = NULL;
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync for (unsigned i = 0; i < RT_ELEMENTS(g_aFsFmts); i++)
c1c9242f0046150566414e1f222cb667e03e605evboxsync {
c1c9242f0046150566414e1f222cb667e03e605evboxsync uint32_t uScore;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync PCRTFILESYSTEMDESC pFsFmt = g_aFsFmts[i];
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync rc = pFsFmt->pfnProbe(hVfsFile, &uScore);
c1c9242f0046150566414e1f222cb667e03e605evboxsync if ( RT_SUCCESS(rc)
c1c9242f0046150566414e1f222cb667e03e605evboxsync && uScore > uScoreMax)
c1c9242f0046150566414e1f222cb667e03e605evboxsync {
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync pFsFmtMatch = pFsFmt;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync uScoreMax = uScore;
c1c9242f0046150566414e1f222cb667e03e605evboxsync }
c1c9242f0046150566414e1f222cb667e03e605evboxsync else if (RT_FAILURE(rc))
c1c9242f0046150566414e1f222cb667e03e605evboxsync break;
c1c9242f0046150566414e1f222cb667e03e605evboxsync }
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync if (RT_SUCCESS(rc))
c1c9242f0046150566414e1f222cb667e03e605evboxsync {
c1c9242f0046150566414e1f222cb667e03e605evboxsync if (uScoreMax > RTFILESYSTEM_MATCH_SCORE_UNSUPPORTED)
c1c9242f0046150566414e1f222cb667e03e605evboxsync {
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync AssertPtr(pFsFmtMatch);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync *ppFsDesc = pFsFmtMatch;
c1c9242f0046150566414e1f222cb667e03e605evboxsync }
c1c9242f0046150566414e1f222cb667e03e605evboxsync else
c1c9242f0046150566414e1f222cb667e03e605evboxsync rc = VERR_NOT_SUPPORTED;
c1c9242f0046150566414e1f222cb667e03e605evboxsync }
c1c9242f0046150566414e1f222cb667e03e605evboxsync
c1c9242f0046150566414e1f222cb667e03e605evboxsync return rc;
c1c9242f0046150566414e1f222cb667e03e605evboxsync}
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsyncRTDECL(int) RTFilesystemVfsFromFile(RTVFSFILE hVfsFile, PRTVFS phVfs)
c1c9242f0046150566414e1f222cb667e03e605evboxsync{
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync int rc = VINF_SUCCESS;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync PCRTFILESYSTEMDESC pFsDesc = NULL;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync RTVFS hVfs = NIL_RTVFS;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync void *pvThis = NULL;
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync AssertPtrReturn(hVfsFile, VERR_INVALID_HANDLE);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync AssertPtrReturn(phVfs, VERR_INVALID_POINTER);
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync rc = rtFsGetFormat(hVfsFile, &pFsDesc);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync if (RT_SUCCESS(rc))
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync {
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync rc = RTVfsNew(&pFsDesc->VfsOps, pFsDesc->cbFs, NIL_RTVFS, NIL_RTVFSLOCK,
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync &hVfs, &pvThis);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync if (RT_SUCCESS(rc))
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync {
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync rc = pFsDesc->pfnInit(pvThis, hVfsFile);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync if (RT_SUCCESS(rc))
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync *phVfs = hVfs;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync else
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync RTVfsRelease(hVfs);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync }
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync }
c1c9242f0046150566414e1f222cb667e03e605evboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync return rc;
c1c9242f0046150566414e1f222cb667e03e605evboxsync}
c1c9242f0046150566414e1f222cb667e03e605evboxsync