Re: [Xen-devel] [PATCH 6 of 9 RFC v2] blktap3/libblktapctl: Introduce block device control information retrieval functionality

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

> > +int tap_ctl_info(pid_t pid, int minor, unsigned long long *sectors,
> > +        unsigned int *sector_size, unsigned int *info) {
> > +    tapdisk_message_t message;
> > +    int err;
> > +
> > +    memset(&message, 0, sizeof(message));
> > +    message.type = TAPDISK_MESSAGE_DISK_INFO;
> > +    message.cookie = minor;
> > +
> > +    err = tap_ctl_connect_send_and_receive(pid, &message, NULL);
> > +    if (err)
> > +        return err;
> > +
> > +    if (message.type != TAPDISK_MESSAGE_DISK_INFO_RSP)
> > +        return -EINVAL;
> 
> Here's a third pattern to go with the two in the previous patch ;-)
> 
> Ian.

Ok.

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