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+/** @file
+ * IPRT - Filesystem, VFS implementations.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef IPRT_INCLUDED_fsvfs_h
+#define IPRT_INCLUDED_fsvfs_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_rt_fs_vfs VFS File System Implementations
+ * @ingroup grp_rt_fs
+ * @{
+ */
+
+/**
+ * Opens a FAT file system volume.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFileIn The file or device backing the volume.
+ * @param fReadOnly Whether to mount it read-only.
+ * @param offBootSector The offset of the boot sector relative to the start
+ * of @a hVfsFileIn. Pass 0 for floppies.
+ * @param phVfs Where to return the virtual file system handle.
+ * @param pErrInfo Where to return additional error information.
+ */
+RTDECL(int) RTFsFatVolOpen(RTVFSFILE hVfsFileIn, bool fReadOnly, uint64_t offBootSector, PRTVFS phVfs, PRTERRINFO pErrInfo);
+
+
+/**
+ * FAT type (format).
+ */
+typedef enum RTFSFATTYPE
+{
+ RTFSFATTYPE_INVALID = 0,
+ RTFSFATTYPE_FAT12,
+ RTFSFATTYPE_FAT16,
+ RTFSFATTYPE_FAT32,
+ RTFSFATTYPE_END
+} RTFSFATTYPE;
+
+
+/** @name RTFSFATVOL_FMT_F_XXX - RTFsFatVolFormat flags
+ * @{ */
+/** Perform a full format, filling unused sectors with 0xf6. */
+#define RTFSFATVOL_FMT_F_FULL UINT32_C(0)
+/** Perform a quick format.
+ * I.e. just write the boot sector, FATs and root directory. */
+#define RTFSFATVOL_FMT_F_QUICK RT_BIT_32(0)
+/** Mask containing all valid flags. */
+#define RTFSFATVOL_FMT_F_VALID_MASK UINT32_C(0x00000001)
+/** @} */
+
+/**
+ * Formats a FAT volume.
+ *
+ * @returns IRPT status code.
+ * @param hVfsFile The volume file.
+ * @param offVol The offset into @a hVfsFile of the file.
+ * Typically 0.
+ * @param cbVol The size of the volume. Pass 0 if the rest of
+ * hVfsFile should be used.
+ * @param fFlags See RTFSFATVOL_FMT_F_XXX.
+ * @param cbSector The logical sector size. Must be power of two.
+ * Optional, pass zero to use 512.
+ * @param cSectorsPerCluster Number of sectors per cluster. Power of two.
+ * Optional, pass zero to auto detect.
+ * @param enmFatType The FAT type (12, 16, 32) to use.
+ * Optional, pass RTFSFATTYPE_INVALID for default.
+ * @param cHeads The number of heads to report in the BPB.
+ * Optional, pass zero to auto detect.
+ * @param cSectorsPerTrack The number of sectors per track to put in the
+ * BPB. Optional, pass zero to auto detect.
+ * @param bMedia The media byte value and FAT ID to use.
+ * Optional, pass zero to auto detect.
+ * @param cRootDirEntries Number of root directory entries.
+ * Optional, pass zero to auto detect.
+ * @param cHiddenSectors Number of hidden sectors. Pass 0 for
+ * unpartitioned media.
+ * @param pErrInfo Additional error information, maybe. Optional.
+ */
+RTDECL(int) RTFsFatVolFormat(RTVFSFILE hVfsFile, uint64_t offVol, uint64_t cbVol, uint32_t fFlags, uint16_t cbSector,
+ uint16_t cSectorsPerCluster, RTFSFATTYPE enmFatType, uint32_t cHeads, uint32_t cSectorsPerTrack,
+ uint8_t bMedia, uint16_t cRootDirEntries, uint32_t cHiddenSectors, PRTERRINFO pErrInfo);
+
+/**
+ * Formats a 1.44MB floppy image.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFile The image. Will be grown to 1.44MB if
+ * necessary.
+ * @param fQuick Whether to quick format the floppy or not.
+ */
+RTDECL(int) RTFsFatVolFormat144(RTVFSFILE hVfsFile, bool fQuick);
+
+/**
+ * Formats a 2.88MB floppy image.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFile The image. Will be grown to 1.44MB if
+ * necessary.
+ * @param fQuick Whether to quick format the floppy or not.
+ */
+RTDECL(int) RTFsFatVolFormat288(RTVFSFILE hVfsFile, bool fQuick);
+
+
+/**
+ * Opens an EXT2/3/4 file system volume.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFileIn The file or device backing the volume.
+ * @param fMntFlags RTVFSMNT_F_XXX.
+ * @param fExtFlags Reserved, MBZ.
+ * @param phVfs Where to return the virtual file system handle.
+ * @param pErrInfo Where to return additional error information.
+ */
+RTDECL(int) RTFsExtVolOpen(RTVFSFILE hVfsFileIn, uint32_t fMntFlags, uint32_t fExtFlags, PRTVFS phVfs, PRTERRINFO pErrInfo);
+
+
+
+/** @name RTFSISO9660_F_XXX - ISO 9660 mount flags.
+ * @{ */
+/** Do not use the UDF part if present. */
+#define RTFSISO9660_F_NO_UDF RT_BIT_32(0)
+/** Do not use the joliet part. */
+#define RTFSISO9660_F_NO_JOLIET RT_BIT_32(1)
+/** Do not use the rock ridge extensions if present. */
+#define RTFSISO9660_F_NO_ROCK RT_BIT_32(2)
+/** Valid ISO 9660 mount option mask. */
+#define RTFSISO9660_F_VALID_MASK UINT32_C(0x00000007)
+/** Checks if @a a_fNoType is the only acceptable volume type. */
+#define RTFSISO9660_F_IS_ONLY_TYPE(a_fFlags, a_fNoType) \
+ ( ((a_fFlags) & (RTFSISO9660_F_NO_UDF | RTFSISO9660_F_NO_JOLIET | RTFSISO9660_F_NO_ROCK)) \
+ == (~(a_fNoType) & (RTFSISO9660_F_NO_UDF | RTFSISO9660_F_NO_JOLIET | RTFSISO9660_F_NO_ROCK)) )
+/** @} */
+
+/**
+ * Opens an ISO 9660 file system volume.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFileIn The file or device backing the volume.
+ * @param fFlags RTFSISO9660_F_XXX.
+ * @param phVfs Where to return the virtual file system handle.
+ * @param pErrInfo Where to return additional error information.
+ */
+RTDECL(int) RTFsIso9660VolOpen(RTVFSFILE hVfsFileIn, uint32_t fFlags, PRTVFS phVfs, PRTERRINFO pErrInfo);
+
+
+/**
+ * Opens an NTFS file system volume.
+ *
+ * @returns IPRT status code.
+ * @param hVfsFileIn The file or device backing the volume.
+ * @param fMntFlags RTVFSMNT_F_XXX.
+ * @param fNtfsFlags Reserved, MBZ.
+ * @param phVfs Where to return the virtual file system handle.
+ * @param pErrInfo Where to return additional error information.
+ */
+RTDECL(int) RTFsNtfsVolOpen(RTVFSFILE hVfsFileIn, uint32_t fMntFlags, uint32_t fNtfsFlags, PRTVFS phVfs, PRTERRINFO pErrInfo);
+
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_fsvfs_h */
+