[CIFS] Reserve upcall IDX value for CIFS with connector header and add

Kconfig option for CIFS upcall.

Signed-off-by: Steve French <sfrench@us.ibm.com>

3 files changed, 15 insertions, 0 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index 4419855d779b..1f0ebe61ad40 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1680,6 +1680,18 @@ config CIFS_EXPERIMENTAL
 
             If unsure, say N.
 
+config CIFS_UPCALL
+          bool "CIFS Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
+          depends on CIFS_EXPERIMENTAL
+          select CONNECTOR
+          help
+            Enables an upcall mechanism for CIFS which will be used to contact
+            userspace helper utilities to provide SPNEGO packaged Kerberos
+            tickets which are needed to mount to certain secure servers
+            (for which more secure Kerberos authentication is required).
+            
+          If unsure, say N.  
+
 config NCP_FS
         tristate "NCP file system support (to mount NetWare volumes)"
         depends on IPX!=n || INET
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 450ab75d6546..2cb620716bc1 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -42,6 +42,7 @@
 #include "ntlmssp.h"
 #include "nterr.h"
 #include "rfc1002pdu.h"
+#include "cn_cifs.h"
 
 #define CIFS_PORT 445
 #define RFC1001_PORT 139
diff --git a/include/linux/connector.h b/include/linux/connector.h
index c5769c6585f4..ad1a22c1c42e 100644
--- a/include/linux/connector.h
+++ b/include/linux/connector.h
@@ -32,6 +32,8 @@
  */
 #define CN_IDX_PROC                     0x1
 #define CN_VAL_PROC                     0x1
+#define CN_IDX_CIFS                     0x2
+#define CN_VAL_CIFS                     0x1
 
 #define CN_NETLINK_USERS                1