"\n"
"Command parameters:\n"
" 'filename' is a disk image filename\n"
- " 'base_image' is the read-only disk image which is used as base for a copy on\n"
- " write image; the copy on write image only stores the modified data\n"
- " 'output_base_image' forces the output image to be created as a copy on write\n"
- " image of the specified base image; 'output_base_image' should have the same\n"
- " content as the input's base image, however the path, image format, etc may\n"
- " differ\n"
" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
- " 'size' is the disk image size in kilobytes. Optional suffixes\n"
- " 'M' (megabyte, 1024 * 1024) and 'G' (gigabyte, 1024 * 1024 * 1024) are\n"
- " supported any 'k' or 'K' is ignored\n"
+ " 'size' is the disk image size in bytes. Optional suffixes\n"
+ " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n"
+ " and T (terabyte, 1024G) are supported. 'b' is ignored.\n"
" 'output_filename' is the destination disk image filename\n"
" 'output_fmt' is the destination format\n"
" 'options' is a comma separated list of format specific options in a\n"
if (options && !strcmp(options, "?")) {
print_option_help(drv->create_options);
+ free(bs);
return 0;
}
if (n > bs_offset + bs_sectors - sector_num)
n = bs_offset + bs_sectors - sector_num;
- if (strcmp(drv->format_name, "host_device")) {
+ if (!drv->no_zero_init) {
/* If the output image is being created as a copy on write image,
assume that sectors which are unallocated in the input image
are present in both the output's and input's base images (no
If the output is to a host device, we also write out
sectors that are entirely 0, since whatever data was
already there is garbage, not 0s. */
- if (strcmp(drv->format_name, "host_device") == 0 || out_baseimg ||
+ if (drv->no_zero_init || out_baseimg ||
is_allocated_sectors(buf1, n, &n1)) {
if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
error("error while writing");