lkml.org 
[lkml]   [2007]   [Sep]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Stray nulls when reading from AF_UNIX sockets
On Thu, 06 Sep 2007 17:48:07 +0200 Anders Blomdell wrote:

> Hi,
>
> With recent kernels (2.6.22.x), we are experiencing that random null characters
> are read by our mySQL server (i.e. the number of bytes read by the server is
> larger than the number of bytes written). I'm currently investigating the
> problem (that occurs every 1-35 hours on a loaded system). A current suspect is
> the following code in net/unix/af_unix.c:
>
> static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
> struct msghdr *msg, size_t size,
> int flags)
> {
> ...
> return copied ? : err;
> }
>
> Shouldn't this read:
>
> return copied ? copied : err;
>
> Or am I missing something?
>
> Please CC me personally.

It's (?:) a gcc extension. See

http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Conditionals.html#Conditionals

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
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: 2007-09-06 18:13    [W:0.038 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site