Revision 47cea614
b/Makefile | ||
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8 | 8 |
LIBS= |
9 | 9 |
DEFINES+=-D_GNU_SOURCE |
10 | 10 |
ifndef CONFIG_WIN32 |
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TOOLS=qemu-mkcow |
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TOOLS=qemu-mkcow vmdk2raw
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|
12 | 12 |
endif |
13 | 13 |
ifdef CONFIG_STATIC |
14 | 14 |
LDFLAGS+=-static |
... | ... | |
22 | 22 |
qemu-mkcow: qemu-mkcow.c |
23 | 23 |
$(CC) $(CFLAGS) $(LDFLAGS) $(DEFINES) -o $@ $^ $(LIBS) |
24 | 24 |
|
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vmdk2raw: vmdk2raw.c |
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$(CC) $(CFLAGS) $(LDFLAGS) $(DEFINES) -o $@ $^ $(LIBS) |
|
27 |
|
|
25 | 28 |
dyngen$(EXESUF): dyngen.c |
26 | 29 |
$(HOST_CC) $(CFLAGS) $(DEFINES) -o $@ $^ |
27 | 30 |
|
... | ... | |
91 | 94 |
$(bindir)/qemu-arm \ |
92 | 95 |
$(bindir)/qemu-sparc \ |
93 | 96 |
$(bindir)/qemu-ppc \ |
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$(bindir)/qemu-mkcow \ |
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$(bindir)/qemu-mkcow $(bindir)/vmdk2raw \
|
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95 | 98 |
$(datadir)/bios.bin \ |
96 | 99 |
$(datadir)/vgabios.bin \ |
97 | 100 |
$(datadir)/linux_boot.bin \ |
b/vmdk.h | ||
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1 |
/* |
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2 |
Copyright (C) Matthew Chapman 2003 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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8 |
|
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This program 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 |
|
12 |
GNU General Public License for more details. |
|
13 |
|
|
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You should have received a copy of the GNU General Public License |
|
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#define SECTOR_BITS 9 |
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#define SECTOR_SIZE (1 << SECTOR_BITS) |
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#define SECTOR_MASK (SECTOR_SIZE - 1) |
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|
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#define L1_BITS (SECTOR_BITS - 3) |
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#define L1_SIZE (1 << L1_BITS) |
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#define L1_MASK (L1_SIZE - 1) |
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|
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#define L2_BITS SECTOR_BITS |
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#define L2_SIZE (1 << L2_BITS) |
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#define L2_MASK (L2_SIZE - 1) |
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#define MIN(x,y) (((x) < (y)) ? (x) : (y)) |
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struct cowdisk_header |
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{ |
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char magic[4]; /* COWD */ |
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uint32_t version; |
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uint32_t flags; |
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uint32_t disk_sectors; |
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uint32_t granularity; |
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uint32_t l1dir_sector; |
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uint32_t l1dir_size; |
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uint32_t file_sectors; |
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uint32_t cylinders; |
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uint32_t heads; |
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uint32_t sectors_per_track; |
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}; |
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struct cowdisk_header2 |
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{ |
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uint32_t parent_ts; |
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uint32_t timestamp; |
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}; |
b/vmdk2raw.c | ||
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1 |
/* |
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vmdk2raw: convert vmware images to raw disk images |
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3 |
Copyright (C) Net Integration Technologies 2004 |
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4 |
Copyright (C) Matthew Chapman 2003 |
|
5 |
|
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This program is free software; you can redistribute it and/or modify |
|
7 |
it under the terms of the GNU General Public License as published by |
|
8 |
the Free Software Foundation; either version 2 of the License, or |
|
9 |
(at your option) any later version. |
|
10 |
|
|
11 |
This program is distributed in the hope that it will be useful, |
|
12 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
14 |
GNU General Public License for more details. |
|
15 |
|
|
16 |
You should have received a copy of the GNU General Public License |
|
17 |
along with this program; if not, write to the Free Software |
|
18 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
|
19 |
*/ |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <inttypes.h> |
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#include <sys/types.h> |
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#include <string.h> |
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#include <sys/stat.h> |
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#include <errno.h> |
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#include "vmdk.h" |
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#include "config-host.h" |
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struct cowdisk_header header; |
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struct cowdisk_header2 header2; |
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off_t disk_base, disk_limit; |
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unsigned int granule_size; |
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uint32_t l1dir[L1_SIZE]; |
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unsigned int cached_l2dir; |
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uint32_t l2dir[L2_SIZE]; |
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41 |
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size_t read_physical(int fd, off64_t offset, size_t length, void *buffer) |
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{ |
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size_t n; |
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if (lseek64(fd, offset, SEEK_SET) == -1) |
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{ |
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perror("lseek"); |
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return -1; |
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} |
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n = read(fd, buffer, length); |
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if (n == -1) |
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{ |
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perror("read from disk"); |
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return -1; |
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} |
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return n; |
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} |
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size_t copy_virtual(int in_fd, int out_fd, off64_t offset, void *buffer, size_t length) |
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{ |
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unsigned int granule_index, granule_offset; |
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unsigned int l1index, l2index; |
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granule_index = offset / granule_size; |
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granule_offset = offset % granule_size; |
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length = MIN(length, granule_size - granule_offset); |
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length = MIN(length, disk_limit - offset); |
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l1index = (granule_index >> L2_BITS) & L1_MASK; |
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l2index = granule_index & L2_MASK; |
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if (l1dir[l1index] == 0) |
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goto zero_fill; |
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if (l1index != cached_l2dir) |
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{ |
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if (read_physical(in_fd, (l1dir[l1index] << SECTOR_BITS), sizeof(l2dir), (char *)l2dir) != sizeof(l2dir)) |
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return 0; |
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cached_l2dir = l1index; |
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} |
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85 |
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86 |
if (l2dir[l2index] == 0) |
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goto zero_fill; |
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if (read_physical(in_fd, (l2dir[l2index] << SECTOR_BITS) + granule_offset, length, buffer) != length) |
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return 0; |
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91 |
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write(out_fd, buffer, length); |
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return length; |
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zero_fill: |
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/* the last chunk of the file can not be sparse |
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* or the file will be truncated */ |
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if (offset + length < disk_limit) { |
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memset(buffer, 0, length); |
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write(out_fd, buffer, length); |
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} else { |
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if (lseek(out_fd, length, SEEK_CUR) == (off_t)-1) |
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perror("lseek"); |
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} |
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return length; |
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} |
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107 |
|
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108 |
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int open_vmdk(const char *filename) |
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{ |
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int fd = open(filename, O_RDONLY); |
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if (fd == -1) |
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{ |
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perror(filename); |
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return -1; |
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} |
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if (read(fd, &header, sizeof(header)) != sizeof(header)) |
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{ |
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perror("read from disk"); |
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return -1; |
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} |
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123 |
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if (memcmp(header.magic, "COWD", 4) != 0) |
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{ |
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fprintf(stderr, "%s is not a VMware virtual disk image\n", filename); |
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return -1; |
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} |
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granule_size = header.granularity << SECTOR_BITS; |
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if (read_physical(fd, header.l1dir_sector << SECTOR_BITS, sizeof(l1dir), (char *)l1dir) != sizeof(l1dir)) |
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return -1; |
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disk_limit = header.disk_sectors << SECTOR_BITS; |
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cached_l2dir = -1; |
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return fd; |
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} |
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void help(void) |
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{ |
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printf("vmdk2raw\n" |
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"usage: vmdk2raw vmware_image output_image\n" |
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"\n" |
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"vmware_image a vmware 2.x/3.x cow image\n" |
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"output_image the created disk image\n" |
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); |
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exit(1); |
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} |
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150 |
|
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#define BUF_SIZE granule_size |
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void copy_disk(in_fd, out_fd) |
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{ |
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char buf[BUF_SIZE]; |
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off64_t i = 0; |
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while (i < disk_limit) { |
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i += copy_virtual(in_fd, out_fd, i, buf, sizeof(buf)); |
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} |
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} |
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160 |
|
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int main(int argc, char **argv) |
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{ |
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int out_fd, in_fd; |
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164 |
|
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if (argc < 3) |
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help(); |
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167 |
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168 |
in_fd = open_vmdk(argv[1]); |
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169 |
if (in_fd < 0) { |
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170 |
return -1; |
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} |
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172 |
|
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out_fd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); |
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174 |
if (out_fd < 0) { |
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175 |
perror(argv[2]); |
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return -1; |
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} |
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178 |
|
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copy_disk(in_fd, out_fd); |
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close(out_fd); |
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return 0; |
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} |
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