ws2_32: sendmsg on OS/X and BSD returns EMSGSIZE error for size 0

Aric Stewart aric at codeweavers.com
Fri Mar 4 10:58:14 CST 2011


I was seeing this coming through WS2_async_send.

I will investigate and give you a better code path that is resulting in 
this.

-aric

On 3/4/11 10:47 AM, Alexandre Julliard wrote:
> Aric Stewart<aric at codeweavers.com>  writes:
>
>> @@ -1781,6 +1781,9 @@ static int WS2_send( int fd, struct ws2_async *wsa )
>>               wsa->iovec[wsa->first_iovec].iov_len -= n;
>>           }
>>       }
>> +    /* BSD and OS/X return EMSGSIZE if hdr.msg_iovlen is 0 */
>> +    else if ( hdr.msg_iovlen == 0&&  errno == EMSGSIZE)
>> +        ret = 0;
>
> This should never happen. We should always have at least one iov at that
> point, the callers should make sure of that.
>



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