[CIFS] cifs export operations

For nfsd to work over cifs mounts (which presumably makes sense when trying
to reexport mounts to windows, network appliances or Samba servers to nfs
clients via nfs server).

This is the first stage of that enablement, marked experimental and turned
off by default.

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

1 files changed, 10 insertions, 2 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index bc2c0ac27169..4dab32a1489a 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/cifsfs.c
  *
- *   Copyright (C) International Business Machines  Corp., 2002,2004
+ *   Copyright (C) International Business Machines  Corp., 2002,2007
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   Common Internet FileSystem (CIFS) client
@@ -47,7 +47,11 @@
 
 #ifdef CONFIG_CIFS_QUOTA
 static struct quotactl_ops cifs_quotactl_ops;
-#endif
+#endif /* QUOTA */
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+extern struct export_operations cifs_export_ops;
+#endif /* EXPERIMENTAL */
 
 int cifsFYI = 0;
 int cifsERROR = 1;
@@ -110,6 +114,10 @@ cifs_read_super(struct super_block *sb, void *data,
 
         sb->s_magic = CIFS_MAGIC_NUMBER;
         sb->s_op = &cifs_super_ops;
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+        if(experimEnabled != 0)
+                sb->s_export_op = &cifs_export_ops;
+#endif /* EXPERIMENTAL */       
 /*      if(cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
             sb->s_blocksize = cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
 #ifdef CONFIG_CIFS_QUOTA