Firewall Wizards: Re: Code reviews [Was: FWTK and smap/smapd]

[Carson Gaspar <carson () taltos org>]

--On Tuesday, July 23, 2002 4:21 AM +0400 ark () eltex ru wrote:

> It depends on what the maximum buflen is, isn't it?
>
> If we have a small buffer that we know does fit send queue we may
> assume that if write count is not equal to expected size something
> wrong happens with the socket and we may shut the connection down
> diagnosing network error, am i wrong?
>
> If the buffer size can really grow that much we need something like
> net_write, sure.
Ah, but I cleverly failed to tell you:

- How much data you were dealing with
- Whether the fd was blocking or non-blocking

In my opinion, anyone who _ever_ assumes write(fd, buf, n) will only ever 
return n or -1 is writing bogus code. Always program defensively - you may 
be a genius, but the person who mangles your code later won't be.
--
Carson

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