Re: [Xen-devel] [PATCH v7 01/14] libxl: Enhance libxl__sendmsg_fds to deal with EINTR and EWOULDBLOCK

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Anthony PERARD writes ("Re: [PATCH v7 01/14] libxl: Enhance libxl__sendmsg_fds 
to deal with EINTR and EWOULDBLOCK"):
> On Fri, Dec 21, 2018 at 02:30:05PM +0000, Ian Jackson wrote:
> > Even with a blocking fd, sendmsg may in principle report a short
> > write.  (So the commit message should talk about short writes in
> > general.)
> 
> I have rewrite the commit message like this:
> 
> This patch change the behavior of libxl__sendmsg_fds to retry sendmsg on
> EINTR error and return an error on short writes.
> 
> This patch allow a caller of libxl__sendmsg_fds to deal with EWOULDBLOCK
> and short writes. The function now requires to send only 1 byte of data
> so that when dealing with non-blocking fds a EWOULDBLOCK error would
> mean that the fds haven't been sent yet. Current caller already send
> only 1 byte.

Thanks,
Ian.

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