#ifndef _LINUX_NFS4_MOUNT_H
  #define _LINUX_NFS4_MOUNT_H
  
  /*
   *  linux/include/linux/nfs4_mount.h
   *
   *  Copyright (C) 2002  Trond Myklebust
   *
   *  structure passed from user-space to kernel-space during an nfsv4 mount
   */
  
  /*
   * WARNING!  Do not delete or change the order of these fields.  If
   * a new field is required then add it to the end.  The version field
   * tracks which fields are present.  This will ensure some measure of
   * mount-to-kernel version compatibility.  Some of these aren't used yet
   * but here they are anyway.
   */
  #define NFS4_MOUNT_VERSION	1
  
  struct nfs_string {
  	unsigned int len;
  	const char __user * data;
  };
  
  struct nfs4_mount_data {
  	int version;				/* 1 */
  	int flags;				/* 1 */
  	int rsize;				/* 1 */
  	int wsize;				/* 1 */
  	int timeo;				/* 1 */
  	int retrans;				/* 1 */
  	int acregmin;				/* 1 */
  	int acregmax;				/* 1 */
  	int acdirmin;				/* 1 */
  	int acdirmax;				/* 1 */
  
  	/* see the definition of 'struct clientaddr4' in RFC3010 */
  	struct nfs_string client_addr;		/* 1 */
  
  	/* Mount path */
  	struct nfs_string mnt_path;		/* 1 */
  
  	/* Server details */
  	struct nfs_string hostname;		/* 1 */
  	/* Server IP address */
  	unsigned int host_addrlen;		/* 1 */
  	struct sockaddr __user * host_addr;	/* 1 */
  
  	/* Transport protocol to use */
  	int proto;				/* 1 */
  
  	/* Pseudo-flavours to use for authentication. See RFC2623 */
  	int auth_flavourlen;			/* 1 */
  	int __user *auth_flavours;		/* 1 */
  };
  
  /* bits in the flags field */
  /* Note: the fields that correspond to existing NFSv2/v3 mount options
   * 	 should mirror the values from include/linux/nfs_mount.h
   */
  
  #define NFS4_MOUNT_SOFT		0x0001	/* 1 */
  #define NFS4_MOUNT_INTR		0x0002	/* 1 */
  #define NFS4_MOUNT_NOCTO	0x0010	/* 1 */
  #define NFS4_MOUNT_NOAC		0x0020	/* 1 */
  #define NFS4_MOUNT_STRICTLOCK	0x1000	/* 1 */

  #define NFS4_MOUNT_UNSHARED	0x8000	/* 1 */
  #define NFS4_MOUNT_FLAGMASK	0x9033

  
  #endif