--- /dev/null
+/*
+ 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;
+};
--- /dev/null
+/*
+ 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;
+}
projects / sdk / emulator / qemu.git / commitdiff