Archipelago » qemu

    BDRVQEDState *s = bs->opaque;

    uint64_t old_image_size;

    int ret;

    if (!qed_is_image_size_valid(offset, s->header.cluster_size,

                                 s->header.table_size)) {

        return -EINVAL;

    }

    /* Shrinking is currently not supported */

    if ((uint64_t)offset < s->header.image_size) {

        return -ENOTSUP;

    }

    old_image_size = s->header.image_size;

    s->header.image_size = offset;

    ret = qed_write_header_sync(s);

    if (ret < 0) {

        s->header.image_size = old_image_size;

    }

    return ret;