vmdk2raw: convert VMware disk images to raw images
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@813 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
aedf53821f
commit
47cea614a1
7
Makefile
7
Makefile
|
|
@ -8,7 +8,7 @@ LDFLAGS=-g
|
|||
LIBS=
|
||||
DEFINES+=-D_GNU_SOURCE
|
||||
ifndef CONFIG_WIN32
|
||||
TOOLS=qemu-mkcow
|
||||
TOOLS=qemu-mkcow vmdk2raw
|
||||
endif
|
||||
ifdef CONFIG_STATIC
|
||||
LDFLAGS+=-static
|
||||
|
|
@ -22,6 +22,9 @@ all: dyngen$(EXESUF) $(TOOLS) qemu-doc.html qemu-tech.html qemu.1
|
|||
qemu-mkcow: qemu-mkcow.c
|
||||
$(CC) $(CFLAGS) $(LDFLAGS) $(DEFINES) -o $@ $^ $(LIBS)
|
||||
|
||||
vmdk2raw: vmdk2raw.c
|
||||
$(CC) $(CFLAGS) $(LDFLAGS) $(DEFINES) -o $@ $^ $(LIBS)
|
||||
|
||||
dyngen$(EXESUF): dyngen.c
|
||||
$(HOST_CC) $(CFLAGS) $(DEFINES) -o $@ $^
|
||||
|
||||
|
|
@ -91,7 +94,7 @@ tarbin:
|
|||
$(bindir)/qemu-arm \
|
||||
$(bindir)/qemu-sparc \
|
||||
$(bindir)/qemu-ppc \
|
||||
$(bindir)/qemu-mkcow \
|
||||
$(bindir)/qemu-mkcow $(bindir)/vmdk2raw \
|
||||
$(datadir)/bios.bin \
|
||||
$(datadir)/vgabios.bin \
|
||||
$(datadir)/linux_boot.bin \
|
||||
|
|
|
|||
|
|
@ -0,0 +1,52 @@
|
|||
/*
|
||||
Copyright (C) Matthew Chapman 2003
|
||||
|
||||
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; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
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, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#define SECTOR_BITS 9
|
||||
#define SECTOR_SIZE (1 << SECTOR_BITS)
|
||||
#define SECTOR_MASK (SECTOR_SIZE - 1)
|
||||
|
||||
#define L1_BITS (SECTOR_BITS - 3)
|
||||
#define L1_SIZE (1 << L1_BITS)
|
||||
#define L1_MASK (L1_SIZE - 1)
|
||||
|
||||
#define L2_BITS SECTOR_BITS
|
||||
#define L2_SIZE (1 << L2_BITS)
|
||||
#define L2_MASK (L2_SIZE - 1)
|
||||
|
||||
#define MIN(x,y) (((x) < (y)) ? (x) : (y))
|
||||
|
||||
struct cowdisk_header
|
||||
{
|
||||
char magic[4]; /* COWD */
|
||||
uint32_t version;
|
||||
uint32_t flags;
|
||||
uint32_t disk_sectors;
|
||||
uint32_t granularity;
|
||||
uint32_t l1dir_sector;
|
||||
uint32_t l1dir_size;
|
||||
uint32_t file_sectors;
|
||||
uint32_t cylinders;
|
||||
uint32_t heads;
|
||||
uint32_t sectors_per_track;
|
||||
};
|
||||
|
||||
struct cowdisk_header2
|
||||
{
|
||||
uint32_t parent_ts;
|
||||
uint32_t timestamp;
|
||||
};
|
||||
|
|
@ -0,0 +1,182 @@
|
|||
/*
|
||||
vmdk2raw: convert vmware images to raw disk images
|
||||
Copyright (C) Net Integration Technologies 2004
|
||||
Copyright (C) Matthew Chapman 2003
|
||||
|
||||
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; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
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, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <sys/types.h>
|
||||
#include <string.h>
|
||||
#include <sys/stat.h>
|
||||
#include <errno.h>
|
||||
#include "vmdk.h"
|
||||
#include "config-host.h"
|
||||
|
||||
struct cowdisk_header header;
|
||||
struct cowdisk_header2 header2;
|
||||
off_t disk_base, disk_limit;
|
||||
unsigned int granule_size;
|
||||
uint32_t l1dir[L1_SIZE];
|
||||
|
||||
unsigned int cached_l2dir;
|
||||
uint32_t l2dir[L2_SIZE];
|
||||
|
||||
size_t read_physical(int fd, off64_t offset, size_t length, void *buffer)
|
||||
{
|
||||
size_t n;
|
||||
|
||||
if (lseek64(fd, offset, SEEK_SET) == -1)
|
||||
{
|
||||
perror("lseek");
|
||||
return -1;
|
||||
}
|
||||
|
||||
n = read(fd, buffer, length);
|
||||
if (n == -1)
|
||||
{
|
||||
perror("read from disk");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return n;
|
||||
}
|
||||
|
||||
size_t copy_virtual(int in_fd, int out_fd, off64_t offset, void *buffer, size_t length)
|
||||
{
|
||||
unsigned int granule_index, granule_offset;
|
||||
unsigned int l1index, l2index;
|
||||
|
||||
granule_index = offset / granule_size;
|
||||
granule_offset = offset % granule_size;
|
||||
length = MIN(length, granule_size - granule_offset);
|
||||
length = MIN(length, disk_limit - offset);
|
||||
|
||||
l1index = (granule_index >> L2_BITS) & L1_MASK;
|
||||
l2index = granule_index & L2_MASK;
|
||||
|
||||
if (l1dir[l1index] == 0)
|
||||
goto zero_fill;
|
||||
|
||||
if (l1index != cached_l2dir)
|
||||
{
|
||||
if (read_physical(in_fd, (l1dir[l1index] << SECTOR_BITS), sizeof(l2dir), (char *)l2dir) != sizeof(l2dir))
|
||||
return 0;
|
||||
|
||||
cached_l2dir = l1index;
|
||||
}
|
||||
|
||||
if (l2dir[l2index] == 0)
|
||||
goto zero_fill;
|
||||
|
||||
if (read_physical(in_fd, (l2dir[l2index] << SECTOR_BITS) + granule_offset, length, buffer) != length)
|
||||
return 0;
|
||||
|
||||
write(out_fd, buffer, length);
|
||||
return length;
|
||||
|
||||
zero_fill:
|
||||
/* the last chunk of the file can not be sparse
|
||||
* or the file will be truncated */
|
||||
if (offset + length < disk_limit) {
|
||||
memset(buffer, 0, length);
|
||||
write(out_fd, buffer, length);
|
||||
} else {
|
||||
if (lseek(out_fd, length, SEEK_CUR) == (off_t)-1)
|
||||
perror("lseek");
|
||||
}
|
||||
return length;
|
||||
}
|
||||
|
||||
|
||||
int open_vmdk(const char *filename)
|
||||
{
|
||||
int fd = open(filename, O_RDONLY);
|
||||
if (fd == -1)
|
||||
{
|
||||
perror(filename);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (read(fd, &header, sizeof(header)) != sizeof(header))
|
||||
{
|
||||
perror("read from disk");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (memcmp(header.magic, "COWD", 4) != 0)
|
||||
{
|
||||
fprintf(stderr, "%s is not a VMware virtual disk image\n", filename);
|
||||
return -1;
|
||||
}
|
||||
|
||||
granule_size = header.granularity << SECTOR_BITS;
|
||||
if (read_physical(fd, header.l1dir_sector << SECTOR_BITS, sizeof(l1dir), (char *)l1dir) != sizeof(l1dir))
|
||||
return -1;
|
||||
|
||||
disk_limit = header.disk_sectors << SECTOR_BITS;
|
||||
|
||||
cached_l2dir = -1;
|
||||
return fd;
|
||||
}
|
||||
|
||||
void help(void)
|
||||
{
|
||||
printf("vmdk2raw\n"
|
||||
"usage: vmdk2raw vmware_image output_image\n"
|
||||
"\n"
|
||||
"vmware_image a vmware 2.x/3.x cow image\n"
|
||||
"output_image the created disk image\n"
|
||||
);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
#define BUF_SIZE granule_size
|
||||
void copy_disk(in_fd, out_fd)
|
||||
{
|
||||
char buf[BUF_SIZE];
|
||||
off64_t i = 0;
|
||||
while (i < disk_limit) {
|
||||
i += copy_virtual(in_fd, out_fd, i, buf, sizeof(buf));
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int out_fd, in_fd;
|
||||
|
||||
if (argc < 3)
|
||||
help();
|
||||
|
||||
in_fd = open_vmdk(argv[1]);
|
||||
if (in_fd < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
out_fd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
|
||||
if (out_fd < 0) {
|
||||
perror(argv[2]);
|
||||
return -1;
|
||||
}
|
||||
|
||||
copy_disk(in_fd, out_fd);
|
||||
close(out_fd);
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue