X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fcifs%2Fexport.c;h=893fd0aebff82160ec04ecd6b4de5825c7bfa956;hb=4fa4d23fa20de67df919030c1216295664866ad7;hp=1d716392c3aa02dd6fa7bf83003b08e1b8d02687;hpb=7c368bb1049bde17fc4f8655492478d7f2918da9;p=linux-2.6

diff --git a/fs/cifs/export.c b/fs/cifs/export.c
index 1d716392c3..893fd0aebf 100644
--- a/fs/cifs/export.c
+++ b/fs/cifs/export.c
@@ -5,7 +5,7 @@
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   Common Internet FileSystem (CIFS) client
- * 
+ *
  *   Operations related to support for exporting files via NFSD
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -22,31 +22,45 @@
  *   along with this library; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
- 
- /* 
+
+ /*
   * See Documentation/filesystems/Exporting
   * and examples in fs/exportfs
+  *
+  * Since cifs is a network file system, an "fsid" must be included for
+  * any nfs exports file entries which refer to cifs paths.  In addition
+  * the cifs mount must be mounted with the "serverino" option (ie use stable
+  * server inode numbers instead of locally generated temporary ones).
+  * Although cifs inodes do not use generation numbers (have generation number
+  * of zero) - the inode number alone should be good enough for simple cases
+  * in which users want to export cifs shares with NFS. The decode and encode
+  * could be improved by using a new routine which expects 64 bit inode numbers
+  * instead of the default 32 bit routines in fs/exportfs
+  *
   */
 
 #include <linux/fs.h>
- 
+#include <linux/exportfs.h>
+#include "cifsglob.h"
+#include "cifs_debug.h"
+
 #ifdef CONFIG_CIFS_EXPERIMENTAL
- 
 static struct dentry *cifs_get_parent(struct dentry *dentry)
 {
- 	/* BB need to add code here eventually to enable export via NFSD */
- 	return ERR_PTR(-EACCES);
+	/* BB need to add code here eventually to enable export via NFSD */
+	cFYI(1, ("get parent for %p", dentry));
+	return ERR_PTR(-EACCES);
 }
- 
+
 struct export_operations cifs_export_ops = {
- 	.get_parent = cifs_get_parent,
-/*	Following five export operations are unneeded so far and can default */ 	
-/* 	.get_dentry =
- 	.get_name =
- 	.find_exported_dentry =
- 	.decode_fh = 
- 	.encode_fs =  */
- };
- 
+	.get_parent = cifs_get_parent,
+/*	Following five export operations are unneeded so far and can default:
+	.get_dentry =
+	.get_name =
+	.find_exported_dentry =
+	.decode_fh =
+	.encode_fs =  */
+};
+
 #endif /* EXPERIMENTAL */
- 
+