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/////////////////////////////////////////////////////////////////////////
// $Id: vmware3.h,v 1.10 2006/04/27 15:11:45 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
/*
* This file provides the interface for using VMWare's virtual
* disk image format under Bochs.
*
* Author: Sharvil Nanavati, for Net Integration Technologies, Inc.
* Contact: snrrrub@yahoo.com
*
* Copyright (C) 2003 Net Integration Technologies, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _COWDISK_H
#define _COWDISK_H 1
class vmware3_image_t : public device_image_t
{
public:
vmware3_image_t() : FL_SHIFT(25), FL_MASK(0xFE000000)
{ };
int open (const char* pathname);
void close();
off_t lseek (off_t offset, int whence);
ssize_t read (void* buf, size_t count);
ssize_t write (const void* buf, size_t count);
private:
static const off_t INVALID_OFFSET;
#if defined(_MSC_VER) && (_MSC_VER<1300)
#pragma pack(push, 1)
#elif defined(__MWERKS__) && defined(macintosh)
#pragma options align=packed
#endif
typedef
#if defined(_MSC_VER) && (_MSC_VER>=1300)
__declspec(align(1))
#endif
struct _COW_Header {
Bit8u id[4];
Bit32u header_version;
Bit32u flags;
Bit32u total_sectors;
Bit32u tlb_size_sectors;
Bit32u flb_offset_sectors;
Bit32u flb_count;
Bit32u next_sector_to_allocate;
Bit32u cylinders;
Bit32u heads;
Bit32u sectors;
Bit8u PAD0[1016];
Bit32u last_modified_time;
Bit8u PAD1[572];
Bit32u last_modified_time_save;
Bit8u label[8];
Bit32u chain_id;
Bit32u number_of_chains;
Bit32u cylinders_in_disk;
Bit32u heads_in_disk;
Bit32u sectors_in_disk;
Bit32u total_sectors_in_disk;
Bit8u PAD2[8];
Bit32u vmware_version;
Bit8u PAD3[364];
}
#if !defined(_MSC_VER)
GCC_ATTRIBUTE((packed))
#endif
COW_Header
;
#if defined(_MSC_VER) && (_MSC_VER<1300)
#pragma pack(pop)
#elif defined(__MWERKS__) && defined(macintosh)
#pragma options align=reset
#endif
struct COW_Image;
friend struct COW_Image;
struct COW_Image {
int fd;
COW_Header header;
Bit32u * flb;
Bit32u ** slb;
Bit8u * tlb;
off_t offset;
off_t min_offset;
off_t max_offset;
bool synced;
} * images, * current;
int read_header(int fd, COW_Header & header);
int write_header(int fd, COW_Header & header);
int read_ints(int fd, Bit32u *buffer, size_t count);
int write_ints(int fd, Bit32u *buffer, size_t count);
char * generate_cow_name(const char * filename, Bit32u chain);
bool is_valid_header(COW_Header & header);
off_t perform_seek();
bool sync();
const Bit32u FL_SHIFT;
const Bit32u FL_MASK;
off_t requested_offset;
Bit32u slb_count;
Bit32u tlb_size;
};
#endif
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