107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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/*
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* This file provides support for VMWare's virtual disk image
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* format version 4 and above.
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*
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* Author: Sharvil Nanavati
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* Contact: snrrrub@gmail.com
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*
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* Copyright (C) 2006 Sharvil Nanavati.
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* Copyright (C) 2006-2013 The Bochs Project
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _VMWARE4_H
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#define _VMWARE4_H 1
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#if defined(_MSC_VER)
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#pragma pack(push, 1)
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#elif defined(__MWERKS__) && defined(macintosh)
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#pragma options align=packed
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#endif
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typedef struct _VM4_Header
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{
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Bit8u id[4];
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Bit32u version;
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Bit32u flags;
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Bit64u total_sectors;
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Bit64u tlb_size_sectors;
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Bit64u description_offset_sectors;
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Bit64u description_size_sectors;
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Bit32u slb_count;
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Bit64u flb_offset_sectors;
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Bit64u flb_copy_offset_sectors;
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Bit64u tlb_offset_sectors;
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Bit8u filler;
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Bit8u check_bytes[4];
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}
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#if !defined(_MSC_VER)
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GCC_ATTRIBUTE((packed))
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#endif
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VM4_Header;
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#if defined(_MSC_VER)
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#pragma pack(pop)
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#elif defined(__MWERKS__) && defined(macintosh)
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#pragma options align=reset
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#endif
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class vmware4_image_t : public device_image_t
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{
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public:
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vmware4_image_t();
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virtual ~vmware4_image_t();
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int open(const char* pathname, int flags);
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void close();
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Bit64s lseek(Bit64s offset, int whence);
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ssize_t read(void* buf, size_t count);
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ssize_t write(const void* buf, size_t count);
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Bit32u get_capabilities();
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static int check_format(int fd, Bit64u imgsize);
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#ifndef BXIMAGE
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bx_bool save_state(const char *backup_fname);
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void restore_state(const char *backup_fname);
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#endif
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private:
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static const off_t INVALID_OFFSET;
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static const int SECTOR_SIZE;
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bx_bool is_open() const;
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bx_bool read_header();
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off_t perform_seek();
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void flush();
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Bit32u read_block_index(Bit64u sector, Bit32u index);
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void write_block_index(Bit64u sector, Bit32u index, Bit32u block_sector);
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int file_descriptor;
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VM4_Header header;
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Bit8u* tlb;
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off_t tlb_offset;
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off_t current_offset;
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bx_bool is_dirty;
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const char *pathname;
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};
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#endif
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