text: /*
   * linux/include/linux/lockd/xdr.h
   *
   * XDR types for the NLM protocol
   *
   * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
   */
  
  #ifndef LOCKD_XDR_H
  #define LOCKD_XDR_H
  
  #include <asm/types.h>
  
  #include <linux/fs.h>
  #include <linux/nfs.h>
  
  #define NLM_MAXCOOKIELEN    	32
  #define NLM_MAXSTRLEN		1024
  
  #define	nlm_granted		__constant_htonl(NLM_LCK_GRANTED)
  #define	nlm_lck_denied		__constant_htonl(NLM_LCK_DENIED)
  #define	nlm_lck_denied_nolocks	__constant_htonl(NLM_LCK_DENIED_NOLOCKS)
  #define	nlm_lck_blocked		__constant_htonl(NLM_LCK_BLOCKED)
  #define	nlm_lck_denied_grace_period	__constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD)
  
  /* Lock info passed via NLM */
  struct nlm_lock {
  	char *			caller;
  	int			len; 	/* length of "caller" */
  	struct nfs_fh		fh;
  	struct xdr_netobj	oh;
  	struct file_lock	fl;
  };
  
  /*
   *	NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
   *	FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
   *	32 bytes.
   */
   
  struct nlm_cookie
  {
  	unsigned char data[NLM_MAXCOOKIELEN];
  	unsigned int len;
  };
  
  /*
   * Generic lockd arguments for all but sm_notify
   */
  struct nlm_args {
  	struct nlm_cookie	cookie;
  	struct nlm_lock		lock;
  	__u32			block;
  	__u32			reclaim;
  	__u32			state;
  	__u32			monitor;
  	__u32			fsm_access;
  	__u32			fsm_mode;
  };
  
  typedef struct nlm_args nlm_args;
  
  /*
   * Generic lockd result
   */
  struct nlm_res {
  	struct nlm_cookie	cookie;
  	__u32			status;
  	struct nlm_lock		lock;
  };
  
  /*
   * statd callback when client has rebooted
   */
  struct nlm_reboot {
  	char *		mon;
  	int		len;
  	__u32		state;
  	__u32		addr;
  	__u32		vers;
  	__u32		proto;
  };
  
  /*
   * Contents of statd callback when monitored host rebooted
   */
  #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
  
  int	nlmsvc_decode_testargs(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_encode_testres(struct svc_rqst *, __u32 *, struct nlm_res *);
  int	nlmsvc_decode_lockargs(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_decode_cancargs(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_decode_unlockargs(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_encode_res(struct svc_rqst *, __u32 *, struct nlm_res *);
  int	nlmsvc_decode_res(struct svc_rqst *, __u32 *, struct nlm_res *);
  int	nlmsvc_encode_void(struct svc_rqst *, __u32 *, void *);
  int	nlmsvc_decode_void(struct svc_rqst *, __u32 *, void *);
  int	nlmsvc_decode_shareargs(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_encode_shareres(struct svc_rqst *, __u32 *, struct nlm_res *);
  int	nlmsvc_decode_notify(struct svc_rqst *, __u32 *, struct nlm_args *);
  int	nlmsvc_decode_reboot(struct svc_rqst *, __u32 *, struct nlm_reboot *);
  /*
  int	nlmclt_encode_testargs(struct rpc_rqst *, __u32 *, struct nlm_args *);
  int	nlmclt_encode_lockargs(struct rpc_rqst *, __u32 *, struct nlm_args *);
  int	nlmclt_encode_cancargs(struct rpc_rqst *, __u32 *, struct nlm_args *);
  int	nlmclt_encode_unlockargs(struct rpc_rqst *, __u32 *, struct nlm_args *);
   */
  
  #endif /* LOCKD_XDR_H */
  