>>> On 15.08.17 at 17:57, <jgr...@suse.com> wrote:
> On 15/08/17 17:39, Jan Beulich wrote:
>>>>> On 14.08.17 at 09:08, <jgr...@suse.com> wrote:
>>> +struct xen_sysctl_set_parameter {
>>> + XEN_GUEST_HANDLE_64(char) params; /* IN: pointer to parameters.
>>> */
>>> + uint16_t size; /* IN: size of parameters. Max.
>>> + XEN_SET_PARAMETER_MAX_SIZE.
>>> */
>>
>> You could even allow querying the size by passing in a null handle
>> and returning the value in the size field.
>
> Would this help in any way?
Since the caller won't want to dimension the buffer dynamically,
perhaps not much. The only use I could see would be to give a
better error message for too long strings than the one resulting
from strerror(). I.e. ...
> Maybe just returning E2BIG would be enough?
... maybe yes.
Jan
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
