[greatlrd] 22106: Hidden bug in our tcp/ip stack, at shutdown api the so can be NULL if that happen, ReactOS will bsod the tcp/ip stack. Arty can u look if this changes is right if not revert it. This changes was tested in fireforx at http://www.mirc.com/get.html and try d/l mirc. This patch do not make firefox bsod, instead it genrate a long crash log at serial debug.

Author: greatlrd
Date: Mon May 29 16:43:01 2006
New Revision: 22106

URL: http://svn.reactos.ru/svn/reactos?rev=22106&view=rev
Log:
Hidden bug in our tcp/ip stack, at shutdown api the so can be NULL if that happen, ReactOS will bsod the tcp/ip stack. 
Arty can u look if this changes is right if not revert it. This changes was tested in fireforx at http://www.mirc.com/get.html and try d/l mirc. This patch do not make firefox bsod, instead it genrate a long crash log at serial debug.

Modified:
    trunk/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c

Modified: trunk/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c
URL: http://svn.reactos.ru/svn/reactos/trunk/reactos/lib/drivers/oskittcp/oskittc...
==============================================================================
--- trunk/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c (original)
+++ trunk/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c Mon May 29 16:43:01 2006
@@ -827,6 +827,19 @@
    register struct socket *so;
    register int how;
 {
+    if (so == NULL)
+    {
+     	register struct protosw *pr = NULL;
+
+	how++;
+	if (how & FREAD)
+		sorflush(so);
+	if (how & FWRITE)
+		return ((*pr->pr_usrreq)(so, PRU_SHUTDOWN,
+		    (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0));
+	return (0);
+    }
+    
    register struct protosw *pr = so->so_proto;

how++;