This patch does 2 things:

It extends the 'server mutex' to conver security=server, becouse the connection
race condition exists here too, and while people *should* use security=domain,
some sites don't....

(This probably should be done in 2.2 as well).

Also, start to actually extract and use the information that the remote
server returns in the info3 struct.

The server mutex code is now in a new file.

Andrew Bartlett
(This used to be commit 9b0dabdf4ec3bb45879caae76e03b57ccdad8b4b)

1 files changed, 57 insertions, 0 deletions

diff --git a/source3/lib/server_mutex.c b/source3/lib/server_mutex.c
new file mode 100644
index 0000000000..416d77564d
--- /dev/null
+++ b/source3/lib/server_mutex.c
@@ -0,0 +1,57 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Authenticate against a remote domain
+   Copyright (C) Andrew Tridgell 1992-2002
+   Copyright (C) Andrew Bartlett 2002
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/* For reasons known only to MS, many of their NT/Win2k versions
+   need serialised access only.  Two connections at the same time
+   may (in certain situations) cause connections to be reset,
+   or access to be denied.
+
+   This locking allows smbd's mutlithread architecture to look
+   like the single-connection that NT makes. */
+
+static char *mutex_server_name;
+
+BOOL grab_server_mutex(const char *name)
+{
+	mutex_server_name = strdup(name);
+	if (!mutex_server_name) {
+		DEBUG(0,("grab_server_mutex: malloc failed for %s\n", name));
+		return False;
+	}
+	if (!message_named_mutex(mutex_server_name, 20)) {
+		DEBUG(10,("grab_server_mutex: failed for %s\n", name));
+		SAFE_FREE(mutex_server_name);
+		return False;
+	}
+
+	return True;
+}
+
+void release_server_mutex(void)
+{
+	if (mutex_server_name) {
+		message_named_mutex_release(mutex_server_name);
+		SAFE_FREE(mutex_server_name);
+	}
+}
+