+++ /dev/null
-/*
- * create a COW disk image
- *
- * Copyright (c) 2003 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <time.h>
-#include <sys/time.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <netinet/in.h>
-
-#include "cow.h"
-
-#include "bswap.h"
-
-int cow_create(int cow_fd, const char *image_filename,
- int64_t image_sectors)
-{
- struct cow_header_v2 cow_header;
- int fd;
- struct stat st;
-
- memset(&cow_header, 0, sizeof(cow_header));
- cow_header.magic = htonl(COW_MAGIC);
- cow_header.version = htonl(COW_VERSION);
- if (image_filename) {
- fd = open(image_filename, O_RDONLY);
- if (fd < 0) {
- perror(image_filename);
- exit(1);
- }
- image_sectors = lseek64(fd, 0, SEEK_END);
- if (fstat(fd, &st) != 0) {
- close(fd);
- return -1;
- }
- close(fd);
- image_sectors /= 512;
- cow_header.mtime = htonl(st.st_mtime);
- realpath(image_filename, cow_header.backing_file);
- }
- cow_header.sectorsize = htonl(512);
- cow_header.size = image_sectors * 512;
-#ifndef WORDS_BIGENDIAN
- cow_header.size = bswap64(cow_header.size);
-#endif
- write(cow_fd, &cow_header, sizeof(cow_header));
- /* resize to include at least all the bitmap */
- ftruncate(cow_fd, sizeof(cow_header) + ((image_sectors + 7) >> 3));
- lseek(cow_fd, 0, SEEK_SET);
- return 0;
-}
-
-void help(void)
-{
- printf("qemu-mkcow version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
- "usage: qemu-mkcow [-h] [-f disk_image] cow_image [cow_size]\n"
- "Create a Copy On Write disk image from an optional raw disk image\n"
- "\n"
- "-f disk_image set the raw disk image name\n"
- "cow_image the created cow_image\n"
- "cow_size the create cow_image size in MB if no raw disk image is used\n"
- "\n"
- "Once the cow_image is created from a raw disk image, you must not modify the original raw disk image\n"
- );
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- const char *image_filename, *cow_filename;
- int cow_fd, c, nb_args, simple_image;
- int64_t image_size;
-
- image_filename = NULL;
- image_size = 0;
- simple_image = 0;
- for(;;) {
- c = getopt(argc, argv, "hf:s");
- if (c == -1)
- break;
- switch(c) {
- case 'h':
- help();
- break;
- case 'f':
- image_filename = optarg;
- break;
- case 's':
- simple_image = 1;
- break;
- }
- }
- if (!image_filename)
- nb_args = 2;
- else
- nb_args = 1;
- if (optind + nb_args != argc)
- help();
-
- cow_filename = argv[optind];
- if (nb_args == 2) {
- image_size = (int64_t)atoi(argv[optind + 1]) * 2 * 1024;
- }
-
- cow_fd = open(cow_filename, O_RDWR | O_CREAT | O_TRUNC | O_LARGEFILE, 0644);
- if (!cow_fd < 0)
- return -1;
- if (simple_image) {
- ftruncate64(cow_fd, image_size * 512);
- } else {
- if (cow_create(cow_fd, image_filename, image_size) < 0) {
- fprintf(stderr, "%s: error while formating\n", cow_filename);
- exit(1);
- }
- }
- close(cow_fd);
- return 0;
-}
+++ /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
-{
- uint32_t version;
- uint32_t flags;
- uint32_t disk_sectors;
- uint32_t granularity;
- uint32_t l1dir_offset;
- 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;
-};
-
-/* based on vdk 3.1 10-11-2003 by Ken Kato */
-
-struct vmdisk_header
-{
- uint32_t version;
- uint32_t flags;
-
- int64_t capacity;
- int64_t granularity;
- int64_t desc_offset;
- int64_t desc_size;
- int32_t num_gtes_per_gte;
- int64_t rgd_offset;
- int64_t gd_offset;
- int64_t grain_offset;
-
- char filler[1];
-
- char check_bytes[4];
-};
+++ /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"
-
-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;
-}
projects / sdk / emulator / qemu.git / commitdiff