Hi Alexey,
This patch fixes my simple read()/write() tests, nice one. The behaviour
also now matches BSD (someone kindly donated me a FreeBSD shell for
testing).
Unfortunately, I discovered a bug with SO_SNDTIMEO/sendfile():
- Connect an AF_INET, SOCK_STREAM socket to a local listening socket.
- Set 5 seconds SO_SNDTIMEO on the connected socket
- Do a sendfile() from a big file down the connected socket. Make sure the
size is big (e.g. 1Mb) so the call blocks.
--> BUG!! The call blocks indefinitely rather than being interrupted after
5 seconds.
Cheers
Chris
On Sat, 17 Feb 2001 kuznet@ms2.inr.ac.ru wrote:
> Hello!
>
> > Unfortunately, it seems to be very buggy. Here are two buggy scenarios.
>
>
> --- ../vger3-010210/linux/net/ipv4/tcp.c Sat Feb 10 23:16:51 2001
> +++ linux/net/ipv4/tcp.c Sat Feb 17 23:27:43 2001
> @@ -691,6 +691,8 @@
>
> set_current_state(TASK_INTERRUPTIBLE);
>
> + if (!timeo)
> + break;
> if (signal_pending(current))
> break;
> if (tcp_memory_free(sk) && !vm_wait)
> --- ../vger3-010210/linux/net/core/sock.c Tue Jan 30 21:20:16 2001
> +++ linux/net/core/sock.c Sat Feb 17 23:27:44 2001
> @@ -727,6 +727,8 @@
> clear_bit(SOCK_ASYNC_NOSPACE, &sk->socket->flags);
> add_wait_queue(sk->sleep, &wait);
> for (;;) {
> + if (!timeo)
> + break;
> if (signal_pending(current))
> break;
> set_bit(SOCK_NOSPACE, &sk->socket->flags);
>
-
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This archive was generated by hypermail 2b29 : Fri Feb 23 2001 - 21:00:16 EST