[src/trunk]: src/sys/compat/linux/common Linux does not implement SO_REUSEPOR...

[jschauma <jschauma%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bbe3bf3dacbc
branches:  trunk
changeset: 526840:bbe3bf3dacbc
user:      jschauma <jschauma%NetBSD.org@localhost>
date:      Sun May 12 18:30:32 2002 +0000

description:
Linux does not implement SO_REUSEPORT, but allows reuse of a
host:port pair through SO_REUSEADDR even if the address is not a
multicast-address.  Effectively, this means that we should use
SO_REUSEPORT when SO_REUSEADDR is set (from the linux process)
to allow Linux applications to not exit with EADDRINUSE.

(Previously erraneously applied to 1.5 branch; approved for
proper location by thorpej)

diffstat:

 sys/compat/linux/common/linux_socket.c |  13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

diffs (34 lines):

diff -r 76c3f6f8d08f -r bbe3bf3dacbc sys/compat/linux/common/linux_socket.c
--- a/sys/compat/linux/common/linux_socket.c    Sun May 12 16:51:06 2002 +0000
+++ b/sys/compat/linux/common/linux_socket.c    Sun May 12 18:30:32 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_socket.c,v 1.38 2002/04/08 14:00:31 christos Exp $       */
+/*     $NetBSD: linux_socket.c,v 1.39 2002/05/12 18:30:32 jschauma Exp $       */
 
 /*-
  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@@ -47,7 +47,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_socket.c,v 1.38 2002/04/08 14:00:31 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_socket.c,v 1.39 2002/05/12 18:30:32 jschauma Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_inet.h"
@@ -440,7 +440,14 @@
        case LINUX_SO_DEBUG:
                return SO_DEBUG;
        case LINUX_SO_REUSEADDR:
-               return SO_REUSEADDR;
+               /* 
+                * Linux does not implement SO_REUSEPORT, but allows reuse of a
+                * host:port pair through SO_REUSEADDR even if the address is not a
+                * multicast-address.  Effectively, this means that we should use
+                * SO_REUSEPORT to allow Linux applications to not exit with
+                * EADDRINUSE
+                */
+               return SO_REUSEPORT;
        case LINUX_SO_TYPE:
                return SO_TYPE;
        case LINUX_SO_ERROR: