/*

 * 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 <linux/fs.h>

#include <linux/nfs.h>

#include <linux/sunrpc/xdr.h>

struct svc_rqst;

#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)

#define nlm_drop_reply		__constant_htonl(30000)

/* Lock info passed via NLM */

struct nlm_lock {

	char *			caller;

	unsigned int		len; 	/* length of "caller" */

	struct nfs_fh		fh;

	struct xdr_netobj	oh;

	u32			svid;

	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;

	__be32			status;

	struct nlm_lock		lock;

};

/*

 * statd callback when client has rebooted

 */

struct nlm_reboot {

};

/*

 * Contents of statd callback when monitored host rebooted

 */

#define NLMSVC_XDRSIZE		sizeof(struct nlm_args)

int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);

int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);

int	nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);

int	nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);

int	nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);

int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);

int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);

int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, 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 */