lkml.org 
[lkml]   [2004]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: UDP recvmsg blocks after select(), 2.6 bug?
On Thu, 7 Oct 2004, Martijn Sipkema wrote:

> > > It does not matter - this behaviour should not be depended upon. There are
> > > lots of other reasons why a packet might in fact not be available, kernels
> > > are allowed to drop UDP packets at will.
> >
> > I've been lurking and reading this thread with great interest. I had been
> > leaning towards thinking the kernel was wrong, until I read this email.
> >
> > This is a very excellent point.
>
> No, it isn't. If the kernel drops a UDP packet, select() should not return
> indicating available data.

The kernel can drop a packet after select() returns, and before read() is
called. That's the whole point of *U*DP.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:06    [W:0.055 / U:0.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site