On Tue, 18 Aug 1998, Paul A Vixie wrote:
> > From: Greg Hudson <ghudson@MIT.EDU>
> >
> > To possibly clear up confusion: under Linux the recvfrom() return
> > value is not limited to the size of the supplied buffer (which has
> > caused some interesting bugs I've had to deal with), but under other
> > systems it is. This situation is consistent with Dan's argument.
>
> then linux is, flatly, broken.
Please give us a specific case, so I can find and fix this.
As far as I can tell, if you pass in a length, we never write more
than that length into your buffer. We truncate packets if your length
is smaller than the packet received, and in the 2.1.x case we'll set
the MSG_TRUNC flag to alert you to this fact. As far as I can tell
this is how POSIX says it should be done.
If things aren't happening this way, show me how and in what way.
Later,
David S. Miller
davem@dm.cobaltmicro.com
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