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-rw-r--r--vmdk2raw.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/vmdk2raw.c b/vmdk2raw.c
deleted file mode 100644
index b2454c2d5c..0000000000
--- a/vmdk2raw.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- 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"
-
-static struct cowdisk_header header;
-static struct vmdisk_header header4;
-static off64_t disk_limit;
-static unsigned int granule_size;
-static uint32_t *l1dir;
-
-static unsigned int cached_l2dir;
-static uint32_t l2dir[L2_SIZE];
-
-static struct vmdk_prm {
- uint32_t grain_table_size;
- uint32_t sectors_per_grain;
- uint32_t sectors_per_table;
- uint32_t directory_size;
-} vdsk;
-
-static size_t read_physical(int fd, off64_t offset, size_t length, void *buffer)
-{
- size_t n;
-
- if (lseek64(fd, offset, SEEK_SET) == -1) {
- printf(" error trying to seek lseek to %lld", offset);
- return -1;
- }
-
- n = read(fd, buffer, length);
-
- if (n == -1) {
- printf("read from disk %lld", offset);
- return -1;
- }
-
- return n;
-}
-
-static int read_l1dir(int fd, size_t offset, int num)
-{
- l1dir = malloc(sizeof(*l1dir) * num);
- if (!l1dir)
- return -1;
- return read_physical(fd, offset << SECTOR_BITS, sizeof(*l1dir) * num, (char *)l1dir) != (sizeof(*l1dir) * num);
-}
-
-static int read_l2dir(int fd, size_t offset, int num)
-{
- return read_physical(fd, offset << SECTOR_BITS, sizeof(l2dir[0]) * num, (char *)l2dir) != sizeof(l2dir);
-}
-
-static size_t copy_virtual(struct vmdk_prm *dsk, int in_fd, int out_fd, off64_t offset, void *buffer, size_t length)
-{
-
- unsigned int granule_offset;
- unsigned int grain_index;
- unsigned int sector_map_idx;
-
- granule_offset = offset % granule_size;
- length = MIN(length, granule_size - granule_offset);
- length = MIN(length, disk_limit - offset);
-
- sector_map_idx = (offset >> SECTOR_BITS) / dsk->sectors_per_table;
-
- if (sector_map_idx >= dsk->directory_size) {
- fprintf(stderr, "cannot locate grain table for %d in %d\n", sector_map_idx, dsk->directory_size);
- return -1;
- }
-
- if (l1dir[sector_map_idx] == 0)
- goto zero_fill;
-
- if (sector_map_idx != cached_l2dir) {
- if (read_l2dir(in_fd, l1dir[sector_map_idx], dsk->grain_table_size)) {
- fprintf(stderr, "read failed\n");
- return -1;
- }
- cached_l2dir = sector_map_idx;
- }
-
- grain_index = ((offset >> SECTOR_BITS) % dsk->sectors_per_table) / dsk->sectors_per_grain;
-
- if (grain_index >= dsk->grain_table_size) {
- fprintf(stderr, "grain to large");
- return -1;
- }
-
- if (l2dir[grain_index] == 0)
- goto zero_fill;
-
- if (read_physical(in_fd, (l2dir[grain_index] << SECTOR_BITS) + granule_offset, length, buffer) != length) {
- fprintf(stderr, "read error 2\n");
- return -1;
- }
-
- 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) {
- if (lseek64(out_fd, length-1, SEEK_CUR) == (off_t)-1)
- perror("lseek");
- /* write the last NULL byte instead of seeking */
- const char nil = 0;
- write(out_fd, &nil, 1);
- } else {
- if (lseek64(out_fd, length, SEEK_CUR) == (off_t)-1)
- perror("lseek");
- }
- return length;
-}
-
-static int open_vmdk4(int fd)
-{
- if (read(fd, &header4, sizeof(header4)) != sizeof(header4)) {
- perror("read from disk");
- return -1;
- }
-
- granule_size = header4.granularity << SECTOR_BITS;
- disk_limit = header4.capacity << SECTOR_BITS;
-
- cached_l2dir = -1;
- vdsk.grain_table_size = header4.num_gtes_per_gte;
- vdsk.sectors_per_grain = header4.granularity;
- vdsk.sectors_per_table = vdsk.grain_table_size * vdsk.sectors_per_grain;
- vdsk.directory_size = (header4.capacity + vdsk.sectors_per_table - 1) / vdsk.sectors_per_table + 1;
-
- if (read_l1dir(fd, header4.rgd_offset, vdsk.directory_size))
- return -1;
-
- return 0;
-
-}
-
-static int open_vmdk3(int fd)
-{
- if (read(fd, &header, sizeof(header)) != sizeof(header)) {
- perror("read from disk\n");
- return -1;
- }
- granule_size = header.granularity << SECTOR_BITS;
- vdsk.sectors_per_grain = header.granularity;
- vdsk.grain_table_size = L2_SIZE;
- vdsk.sectors_per_table = vdsk.grain_table_size * vdsk.sectors_per_grain;
- vdsk.directory_size = L1_SIZE;
- if (read_l1dir(fd, header.l1dir_offset, L1_SIZE))
- return -1;
-
- disk_limit = header.disk_sectors << SECTOR_BITS;
-
- return fd;
-}
-
-static int open_vmdk(const char *filename)
-{
- int fd = open(filename, O_RDONLY | O_LARGEFILE);
- if (fd == -1) {
- perror(filename);
- return -1;
- }
-
- char magic[4];
- if (read(fd, &magic, sizeof(magic)) != sizeof(magic)) {
- perror("read from disk");
- return -1;
- }
-
- if (!memcmp(magic, "KDMV", sizeof(magic))) {
- open_vmdk4(fd);
- } else if (!memcmp(magic, "COWD", sizeof(magic))) {
- open_vmdk3(fd);
- } else {
- fprintf(stderr, "%s is not a VMware virtual disk image\n", filename);
- return -1;
- }
-
- cached_l2dir = -1;
- return fd;
-}
-
-static void help(void)
-{
- printf("vmdk2raw\n"
- "usage: vmdk2raw vmware_image output_image\n"
- "\n"
- "vmware_image a vmware cow image\n"
- "output_image the created disk image\n"
- );
- exit(1);
-}
-
-#define BUF_SIZE 0x10000
-static void copy_disk(in_fd, out_fd)
-{
- char buf[BUF_SIZE];
- off64_t i = 0;
- int ret;
- while (i < disk_limit) {
- ret = copy_virtual(&vdsk, in_fd, out_fd, i, buf, sizeof(buf));
- if (ret < 0) {
- fprintf(stderr, "copying failed\n");
- exit(-1);
- }
- i += ret;
- }
-}
-
-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_LARGEFILE | 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;
-}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 12:16:40 +0000