Il 02/08/2012 10:32, Wenchao Xia ha scritto:
>>
>> ssize_t qb_read(struct QBlockState *qbs, void *buf, size_t len, off_t
>> offset)
>>
> OK.
>
>>> +{
>>> + int ret;
>>> + BlockDriverState *bs;
>>> +
>>> + bs = (BlockDriverState *)qbs->bdrvs;
>>> +
>>> + ret = bdrv_read(bs, start / 512,
>>> + buf, len / 512);
>>
>> IIRC there is a constant for 512 somewhere.
>>
> will include that header.Also assert that start and len are aligned. Paolo
