[net-next-2.6.git] / fs / nfsd / xdr4.h

/*
 *  Server-side types for NFSv4.
 *
 *  Copyright (c) 2002 The Regents of the University of Michigan.
 *  All rights reserved.
 *
 *  Kendrick Smith <kmsmith@umich.edu>
 *  Andy Adamson   <andros@umich.edu>
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the University nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef _LINUX_NFSD_XDR4_H
#define _LINUX_NFSD_XDR4_H

#include "state.h"
#include "nfsd.h"

#define NFSD4_MAX_TAGLEN	128
#define XDR_LEN(n)                     (((n) + 3) & ~3)

struct nfsd4_compound_state {
	struct svc_fh		current_fh;
	struct svc_fh		save_fh;
	struct nfs4_stateowner	*replay_owner;
	/* For sessions DRC */
	struct nfsd4_session	*session;
	struct nfsd4_slot	*slot;
	__be32			*datap;
	size_t			iovlen;
	u32			minorversion;
	u32			status;
};

static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
{
	return cs->slot != NULL;
}

struct nfsd4_change_info {
	u32		atomic;
	bool		change_supported;
	u32		before_ctime_sec;
	u32		before_ctime_nsec;
	u64		before_change;
	u32		after_ctime_sec;
	u32		after_ctime_nsec;
	u64		after_change;
};

struct nfsd4_access {
	u32		ac_req_access;      /* request */
	u32		ac_supported;       /* response */
	u32		ac_resp_access;     /* response */
};

struct nfsd4_close {
	u32		cl_seqid;           /* request */
	stateid_t	cl_stateid;         /* request+response */
	struct nfs4_stateowner * cl_stateowner;	/* response */
};

struct nfsd4_commit {
	u64		co_offset;          /* request */
	u32		co_count;           /* request */
	nfs4_verifier	co_verf;            /* response */
};

struct nfsd4_create {
	u32		cr_namelen;         /* request */
	char *		cr_name;            /* request */
	u32		cr_type;            /* request */
	union {                             /* request */
		struct {
			u32 namelen;
			char *name;
		} link;   /* NF4LNK */
		struct {
			u32 specdata1;
			u32 specdata2;
		} dev;    /* NF4BLK, NF4CHR */
	} u;
	u32		cr_bmval[3];        /* request */
	struct iattr	cr_iattr;           /* request */
	struct nfsd4_change_info  cr_cinfo; /* response */
	struct nfs4_acl *cr_acl;
};
#define cr_linklen	u.link.namelen
#define cr_linkname	u.link.name
#define cr_specdata1	u.dev.specdata1
#define cr_specdata2	u.dev.specdata2

struct nfsd4_delegreturn {
	stateid_t	dr_stateid;
};

struct nfsd4_getattr {
	u32		ga_bmval[3];        /* request */
	struct svc_fh	*ga_fhp;            /* response */
};

struct nfsd4_link {
	u32		li_namelen;         /* request */
	char *		li_name;            /* request */
	struct nfsd4_change_info  li_cinfo; /* response */
};

struct nfsd4_lock_denied {
	clientid_t	ld_clientid;
	struct nfs4_stateowner   *ld_sop;
	u64             ld_start;
	u64             ld_length;
	u32             ld_type;
};

struct nfsd4_lock {
	/* request */
	u32             lk_type;
	u32             lk_reclaim;         /* boolean */
	u64             lk_offset;
	u64             lk_length;
	u32             lk_is_new;
	union {
		struct {
			u32             open_seqid;
			stateid_t       open_stateid;
			u32             lock_seqid;
			clientid_t      clientid;
			struct xdr_netobj owner;
		} new;
		struct {
			stateid_t       lock_stateid;
			u32             lock_seqid;
		} old;
	} v;

	/* response */
	union {
		struct {
			stateid_t               stateid;
		} ok;
		struct nfsd4_lock_denied        denied;
	} u;
	/* The lk_replay_owner is the open owner in the open_to_lock_owner
	 * case and the lock owner otherwise: */
	struct nfs4_stateowner *lk_replay_owner;
};
#define lk_new_open_seqid       v.new.open_seqid
#define lk_new_open_stateid     v.new.open_stateid
#define lk_new_lock_seqid       v.new.lock_seqid
#define lk_new_clientid         v.new.clientid
#define lk_new_owner            v.new.owner
#define lk_old_lock_stateid     v.old.lock_stateid
#define lk_old_lock_seqid       v.old.lock_seqid

#define lk_rflags       u.ok.rflags
#define lk_resp_stateid u.ok.stateid
#define lk_denied       u.denied


struct nfsd4_lockt {
	u32				lt_type;
	clientid_t			lt_clientid;
	struct xdr_netobj		lt_owner;
	u64				lt_offset;
	u64				lt_length;
	struct nfs4_stateowner * 	lt_stateowner;
	struct nfsd4_lock_denied  	lt_denied;
};

 
struct nfsd4_locku {
	u32             lu_type;
	u32             lu_seqid;
	stateid_t       lu_stateid;
	u64             lu_offset;
	u64             lu_length;
	struct nfs4_stateowner  *lu_stateowner;
};


struct nfsd4_lookup {
	u32		lo_len;             /* request */
	char *		lo_name;            /* request */
};

struct nfsd4_putfh {
	u32		pf_fhlen;           /* request */
	char		*pf_fhval;          /* request */
};

struct nfsd4_open {
	u32		op_claim_type;      /* request */
	struct xdr_netobj op_fname;	    /* request - everything but CLAIM_PREV */
	u32		op_delegate_type;   /* request - CLAIM_PREV only */
	stateid_t       op_delegate_stateid; /* request - response */
	u32		op_create;     	    /* request */
	u32		op_createmode;      /* request */
	u32		op_bmval[3];        /* request */
	struct iattr	iattr;              /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
	nfs4_verifier	verf;               /* EXCLUSIVE4 */
	clientid_t	op_clientid;        /* request */
	struct xdr_netobj op_owner;           /* request */
	u32		op_seqid;           /* request */
	u32		op_share_access;    /* request */
	u32		op_share_deny;      /* request */
	stateid_t	op_stateid;         /* response */
	u32		op_recall;          /* recall */
	struct nfsd4_change_info  op_cinfo; /* response */
	u32		op_rflags;          /* response */
	int		op_truncate;        /* used during processing */
	struct nfs4_stateowner *op_stateowner; /* used during processing */
	struct nfs4_acl *op_acl;
};
#define op_iattr	iattr
#define op_verf		verf

struct nfsd4_open_confirm {
	stateid_t	oc_req_stateid		/* request */;
	u32		oc_seqid    		/* request */;
	stateid_t	oc_resp_stateid		/* response */;
	struct nfs4_stateowner * oc_stateowner;	/* response */
};

struct nfsd4_open_downgrade {
	stateid_t       od_stateid;
	u32             od_seqid;
	u32             od_share_access;
	u32             od_share_deny;
	struct nfs4_stateowner *od_stateowner;
};


struct nfsd4_read {
	stateid_t	rd_stateid;         /* request */
	u64		rd_offset;          /* request */
	u32		rd_length;          /* request */
	int		rd_vlen;
	struct file     *rd_filp;
	
	struct svc_rqst *rd_rqstp;          /* response */
	struct svc_fh * rd_fhp;             /* response */
};

struct nfsd4_readdir {
	u64		rd_cookie;          /* request */
	nfs4_verifier	rd_verf;            /* request */
	u32		rd_dircount;        /* request */
	u32		rd_maxcount;        /* request */
	u32		rd_bmval[3];        /* request */
	struct svc_rqst *rd_rqstp;          /* response */
	struct svc_fh * rd_fhp;             /* response */

	struct readdir_cd	common;
	__be32 *		buffer;
	int			buflen;
	__be32 *		offset;
};

struct nfsd4_release_lockowner {
	clientid_t        rl_clientid;
	struct xdr_netobj rl_owner;
};
struct nfsd4_readlink {
	struct svc_rqst *rl_rqstp;          /* request */
	struct svc_fh *	rl_fhp;             /* request */
};

struct nfsd4_remove {
	u32		rm_namelen;         /* request */
	char *		rm_name;            /* request */
	struct nfsd4_change_info  rm_cinfo; /* response */
};

struct nfsd4_rename {
	u32		rn_snamelen;        /* request */
	char *		rn_sname;           /* request */
	u32		rn_tnamelen;        /* request */
	char *		rn_tname;           /* request */
	struct nfsd4_change_info  rn_sinfo; /* response */
	struct nfsd4_change_info  rn_tinfo; /* response */
};

struct nfsd4_secinfo {
	u32 si_namelen;					/* request */
	char *si_name;					/* request */
	struct svc_export *si_exp;			/* response */
};

struct nfsd4_setattr {
	stateid_t	sa_stateid;         /* request */
	u32		sa_bmval[3];        /* request */
	struct iattr	sa_iattr;           /* request */
	struct nfs4_acl *sa_acl;
};

struct nfsd4_setclientid {
	nfs4_verifier	se_verf;            /* request */
	u32		se_namelen;         /* request */
	char *		se_name;            /* request */
	u32		se_callback_prog;   /* request */
	u32		se_callback_netid_len;  /* request */
	char *		se_callback_netid_val;  /* request */
	u32		se_callback_addr_len;   /* request */
	char *		se_callback_addr_val;   /* request */
	u32		se_callback_ident;  /* request */
	clientid_t	se_clientid;        /* response */
	nfs4_verifier	se_confirm;         /* response */
};

struct nfsd4_setclientid_confirm {
	clientid_t	sc_clientid;
	nfs4_verifier	sc_confirm;
};

/* also used for NVERIFY */
struct nfsd4_verify {
	u32		ve_bmval[3];        /* request */
	u32		ve_attrlen;         /* request */
	char *		ve_attrval;         /* request */
};

struct nfsd4_write {
	stateid_t	wr_stateid;         /* request */
	u64		wr_offset;          /* request */
	u32		wr_stable_how;      /* request */
	u32		wr_buflen;          /* request */
	int		wr_vlen;

	u32		wr_bytes_written;   /* response */
	u32		wr_how_written;     /* response */
	nfs4_verifier	wr_verifier;        /* response */
};

struct nfsd4_exchange_id {
	nfs4_verifier	verifier;
	struct xdr_netobj clname;
	u32		flags;
	clientid_t	clientid;
	u32		seqid;
	int		spa_how;
};

struct nfsd4_sequence {
	struct nfs4_sessionid	sessionid;		/* request/response */
	u32			seqid;			/* request/response */
	u32			slotid;			/* request/response */
	u32			maxslots;		/* request/response */
	u32			cachethis;		/* request */
#if 0
	u32			target_maxslots;	/* response */
	u32			status_flags;		/* response */
#endif /* not yet */
};

struct nfsd4_destroy_session {
	struct nfs4_sessionid	sessionid;
};

struct nfsd4_reclaim_complete {
	u32 rca_one_fs;
};

struct nfsd4_op {
	int					opnum;
	__be32					status;
	union {
		struct nfsd4_access		access;
		struct nfsd4_close		close;
		struct nfsd4_commit		commit;
		struct nfsd4_create		create;
		struct nfsd4_delegreturn	delegreturn;
		struct nfsd4_getattr		getattr;
		struct svc_fh *			getfh;
		struct nfsd4_link		link;
		struct nfsd4_lock		lock;
		struct nfsd4_lockt		lockt;
		struct nfsd4_locku		locku;
		struct nfsd4_lookup		lookup;
		struct nfsd4_verify		nverify;
		struct nfsd4_open		open;
		struct nfsd4_open_confirm	open_confirm;
		struct nfsd4_open_downgrade	open_downgrade;
		struct nfsd4_putfh		putfh;
		struct nfsd4_read		read;
		struct nfsd4_readdir		readdir;
		struct nfsd4_readlink		readlink;
		struct nfsd4_remove		remove;
		struct nfsd4_rename		rename;
		clientid_t			renew;
		struct nfsd4_secinfo		secinfo;
		struct nfsd4_setattr		setattr;
		struct nfsd4_setclientid	setclientid;
		struct nfsd4_setclientid_confirm setclientid_confirm;
		struct nfsd4_verify		verify;
		struct nfsd4_write		write;
		struct nfsd4_release_lockowner	release_lockowner;

		/* NFSv4.1 */
		struct nfsd4_exchange_id	exchange_id;
		struct nfsd4_create_session	create_session;
		struct nfsd4_destroy_session	destroy_session;
		struct nfsd4_sequence		sequence;
		struct nfsd4_reclaim_complete	reclaim_complete;
	} u;
	struct nfs4_replay *			replay;
};

struct nfsd4_compoundargs {
	/* scratch variables for XDR decode */
	__be32 *			p;
	__be32 *			end;
	struct page **			pagelist;
	int				pagelen;
	__be32				tmp[8];
	__be32 *			tmpp;
	struct tmpbuf {
		struct tmpbuf *next;
		void (*release)(const void *);
		void *buf;
	}				*to_free;

	struct svc_rqst			*rqstp;

	u32				taglen;
	char *				tag;
	u32				minorversion;
	u32				opcnt;
	struct nfsd4_op			*ops;
	struct nfsd4_op			iops[8];
};

struct nfsd4_compoundres {
	/* scratch variables for XDR encode */
	__be32 *			p;
	__be32 *			end;
	struct xdr_buf *		xbuf;
	struct svc_rqst *		rqstp;

	u32				taglen;
	char *				tag;
	u32				opcnt;
	__be32 *			tagp; /* tag, opcount encode location */
	struct nfsd4_compound_state	cstate;
};

static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
{
	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
	return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
}

static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
{
	return !resp->cstate.slot->sl_cachethis || nfsd4_is_solo_sequence(resp);
}

#define NFS4_SVC_XDRSIZE		sizeof(struct nfsd4_compoundargs)

static inline void
set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
{
	BUG_ON(!fhp->fh_pre_saved || !fhp->fh_post_saved);
	cinfo->atomic = 1;
	cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
	if (cinfo->change_supported) {
		cinfo->before_change = fhp->fh_pre_change;
		cinfo->after_change = fhp->fh_post_change;
	} else {
		cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
		cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
		cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
		cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
	}
}

int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
		struct nfsd4_compoundargs *);
int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
		struct nfsd4_compoundres *);
void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
__be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
		       struct dentry *dentry, __be32 *buffer, int *countp,
		       u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_setclientid *setclid);
extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_setclientid_confirm *setclientid_confirm);
extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
		struct nfsd4_sequence *seq);
extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *, struct nfsd4_exchange_id *);
extern __be32 nfsd4_create_session(struct svc_rqst *,
		struct nfsd4_compound_state *,
		struct nfsd4_create_session *);
extern __be32 nfsd4_sequence(struct svc_rqst *,
		struct nfsd4_compound_state *,
		struct nfsd4_sequence *);
extern __be32 nfsd4_destroy_session(struct svc_rqst *,
		struct nfsd4_compound_state *,
		struct nfsd4_destroy_session *);
__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
		struct nfsd4_open *open);
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
		struct svc_fh *current_fh, struct nfsd4_open *open);
extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
extern __be32 nfsd4_close(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_close *close);
extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_open_downgrade *od);
extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
		struct nfsd4_lock *lock);
extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_lockt *lockt);
extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_locku *locku);
extern __be32
nfsd4_release_lockowner(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *,
		struct nfsd4_release_lockowner *rlockowner);
extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
			  struct nfsd4_compound_state *, clientid_t *clid);
#endif

/*
 * Local variables:
 *  c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Server-side types for NFSv4.
	3	*
	4	* Copyright (c) 2002 The Regents of the University of Michigan.
	5	* All rights reserved.
	6	*
	7	* Kendrick Smith <kmsmith@umich.edu>
	8	* Andy Adamson <andros@umich.edu>
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	*
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions and the following disclaimer.
	16	* 2. Redistributions in binary form must reproduce the above copyright
	17	* notice, this list of conditions and the following disclaimer in the
	18	* documentation and/or other materials provided with the distribution.
	19	* 3. Neither the name of the University nor the names of its
	20	* contributors may be used to endorse or promote products derived
	21	* from this software without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
	24	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	25	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	26	* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	28	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	29	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	30	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	31	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	32	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	33	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	34	*
	35	*/
	36
	37	#ifndef _LINUX_NFSD_XDR4_H
	38	#define _LINUX_NFSD_XDR4_H
	39
9a74af21 BH	40	#include "state.h"
9a74af21 BH	41	#include "nfsd.h"
1da177e4 LT	42
	43	#define NFSD4_MAX_TAGLEN 128
	44	#define XDR_LEN(n) (((n) + 3) & ~3)
	45
ca364317	46	struct nfsd4_compound_state {
e354d571 AA	47	struct svc_fh current_fh;
	48	struct svc_fh save_fh;
	49	struct nfs4_stateowner *replay_owner;
b85d4c01 BH	50	/* For sessions DRC */
	51	struct nfsd4_session *session;
	52	struct nfsd4_slot *slot;
557ce264	53	__be32 *datap;
da3846a2	54	size_t iovlen;
d87a8ade	55	u32 minorversion;
074fe897	56	u32 status;
ca364317 BF	57	};
ca364317 BF	58
6668958f AA	59	static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
	60	{
	61	return cs->slot != NULL;
	62	}
	63
1da177e4 LT	64	struct nfsd4_change_info {
1da177e4 LT	65	u32 atomic;
c654b8a9	66	bool change_supported;
1da177e4 LT	67	u32 before_ctime_sec;
1da177e4 LT	68	u32 before_ctime_nsec;
c654b8a9	69	u64 before_change;
1da177e4 LT	70	u32 after_ctime_sec;
1da177e4 LT	71	u32 after_ctime_nsec;
c654b8a9	72	u64 after_change;
1da177e4 LT	73	};
	74
	75	struct nfsd4_access {
	76	u32 ac_req_access; /* request */
	77	u32 ac_supported; /* response */
	78	u32 ac_resp_access; /* response */
	79	};
	80
	81	struct nfsd4_close {
	82	u32 cl_seqid; /* request */
	83	stateid_t cl_stateid; /* request+response */
	84	struct nfs4_stateowner * cl_stateowner; /* response */
	85	};
	86
	87	struct nfsd4_commit {
	88	u64 co_offset; /* request */
	89	u32 co_count; /* request */
	90	nfs4_verifier co_verf; /* response */
	91	};
	92
	93	struct nfsd4_create {
	94	u32 cr_namelen; /* request */
	95	char * cr_name; /* request */
	96	u32 cr_type; /* request */
	97	union { /* request */
	98	struct {
	99	u32 namelen;
	100	char *name;
	101	} link; /* NF4LNK */
	102	struct {
	103	u32 specdata1;
	104	u32 specdata2;
	105	} dev; /* NF4BLK, NF4CHR */
	106	} u;
7e705706	107	u32 cr_bmval[3]; /* request */
1da177e4 LT	108	struct iattr cr_iattr; /* request */
	109	struct nfsd4_change_info cr_cinfo; /* response */
	110	struct nfs4_acl *cr_acl;
	111	};
	112	#define cr_linklen u.link.namelen
	113	#define cr_linkname u.link.name
	114	#define cr_specdata1 u.dev.specdata1
	115	#define cr_specdata2 u.dev.specdata2
	116
	117	struct nfsd4_delegreturn {
	118	stateid_t dr_stateid;
	119	};
	120
	121	struct nfsd4_getattr {
7e705706	122	u32 ga_bmval[3]; /* request */
1da177e4 LT	123	struct svc_fh ga_fhp; / response */
	124	};
	125
	126	struct nfsd4_link {
	127	u32 li_namelen; /* request */
	128	char * li_name; /* request */
	129	struct nfsd4_change_info li_cinfo; /* response */
	130	};
	131
	132	struct nfsd4_lock_denied {
	133	clientid_t ld_clientid;
	134	struct nfs4_stateowner *ld_sop;
	135	u64 ld_start;
	136	u64 ld_length;
	137	u32 ld_type;
	138	};
	139
	140	struct nfsd4_lock {
	141	/* request */
	142	u32 lk_type;
	143	u32 lk_reclaim; /* boolean */
	144	u64 lk_offset;
	145	u64 lk_length;
	146	u32 lk_is_new;
	147	union {
	148	struct {
	149	u32 open_seqid;
	150	stateid_t open_stateid;
	151	u32 lock_seqid;
	152	clientid_t clientid;
	153	struct xdr_netobj owner;
	154	} new;
	155	struct {
	156	stateid_t lock_stateid;
	157	u32 lock_seqid;
	158	} old;
	159	} v;
	160
	161	/* response */
	162	union {
	163	struct {
	164	stateid_t stateid;
	165	} ok;
	166	struct nfsd4_lock_denied denied;
	167	} u;
3a65588a BF	168	/* The lk_replay_owner is the open owner in the open_to_lock_owner
	169	* case and the lock owner otherwise: */
	170	struct nfs4_stateowner *lk_replay_owner;
1da177e4 LT	171	};
	172	#define lk_new_open_seqid v.new.open_seqid
	173	#define lk_new_open_stateid v.new.open_stateid
	174	#define lk_new_lock_seqid v.new.lock_seqid
	175	#define lk_new_clientid v.new.clientid
	176	#define lk_new_owner v.new.owner
	177	#define lk_old_lock_stateid v.old.lock_stateid
	178	#define lk_old_lock_seqid v.old.lock_seqid
	179
	180	#define lk_rflags u.ok.rflags
	181	#define lk_resp_stateid u.ok.stateid
	182	#define lk_denied u.denied
	183
	184
	185	struct nfsd4_lockt {
	186	u32 lt_type;
	187	clientid_t lt_clientid;
	188	struct xdr_netobj lt_owner;
	189	u64 lt_offset;
	190	u64 lt_length;
	191	struct nfs4_stateowner * lt_stateowner;
	192	struct nfsd4_lock_denied lt_denied;
	193	};
	194
	195
	196	struct nfsd4_locku {
	197	u32 lu_type;
	198	u32 lu_seqid;
	199	stateid_t lu_stateid;
	200	u64 lu_offset;
	201	u64 lu_length;
	202	struct nfs4_stateowner *lu_stateowner;
	203	};
	204
	205
	206	struct nfsd4_lookup {
	207	u32 lo_len; /* request */
	208	char * lo_name; /* request */
	209	};
	210
	211	struct nfsd4_putfh {
	212	u32 pf_fhlen; /* request */
	213	char pf_fhval; / request */
	214	};
	215
	216	struct nfsd4_open {
	217	u32 op_claim_type; /* request */
	218	struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
	219	u32 op_delegate_type; /* request - CLAIM_PREV only */
	220	stateid_t op_delegate_stateid; /* request - response */
	221	u32 op_create; /* request */
	222	u32 op_createmode; /* request */
7e705706	223	u32 op_bmval[3]; /* request */
79fb54ab BH	224	struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
79fb54ab BH	225	nfs4_verifier verf; /* EXCLUSIVE4 */
1da177e4 LT	226	clientid_t op_clientid; /* request */
	227	struct xdr_netobj op_owner; /* request */
	228	u32 op_seqid; /* request */
	229	u32 op_share_access; /* request */
	230	u32 op_share_deny; /* request */
	231	stateid_t op_stateid; /* response */
7b190fec	232	u32 op_recall; /* recall */
1da177e4 LT	233	struct nfsd4_change_info op_cinfo; /* response */
	234	u32 op_rflags; /* response */
	235	int op_truncate; /* used during processing */
	236	struct nfs4_stateowner op_stateowner; / used during processing */
	237	struct nfs4_acl *op_acl;
	238	};
79fb54ab BH	239	#define op_iattr iattr
79fb54ab BH	240	#define op_verf verf
1da177e4 LT	241
	242	struct nfsd4_open_confirm {
	243	stateid_t oc_req_stateid /* request */;
	244	u32 oc_seqid /* request */;
	245	stateid_t oc_resp_stateid /* response */;
	246	struct nfs4_stateowner * oc_stateowner; /* response */
	247	};
	248
	249	struct nfsd4_open_downgrade {
	250	stateid_t od_stateid;
	251	u32 od_seqid;
	252	u32 od_share_access;
	253	u32 od_share_deny;
	254	struct nfs4_stateowner *od_stateowner;
	255	};
	256
	257
	258	struct nfsd4_read {
	259	stateid_t rd_stateid; /* request */
	260	u64 rd_offset; /* request */
	261	u32 rd_length; /* request */
1da177e4 LT	262	int rd_vlen;
	263	struct file *rd_filp;
	264
	265	struct svc_rqst rd_rqstp; / response */
	266	struct svc_fh * rd_fhp; /* response */
	267	};
	268
	269	struct nfsd4_readdir {
	270	u64 rd_cookie; /* request */
	271	nfs4_verifier rd_verf; /* request */
	272	u32 rd_dircount; /* request */
	273	u32 rd_maxcount; /* request */
7e705706	274	u32 rd_bmval[3]; /* request */
1da177e4 LT	275	struct svc_rqst rd_rqstp; / response */
	276	struct svc_fh * rd_fhp; /* response */
	277
	278	struct readdir_cd common;
2ebbc012	279	__be32 * buffer;
1da177e4	280	int buflen;
2ebbc012	281	__be32 * offset;
1da177e4 LT	282	};
	283
	284	struct nfsd4_release_lockowner {
	285	clientid_t rl_clientid;
	286	struct xdr_netobj rl_owner;
	287	};
	288	struct nfsd4_readlink {
	289	struct svc_rqst rl_rqstp; / request */
	290	struct svc_fh * rl_fhp; /* request */
	291	};
	292
	293	struct nfsd4_remove {
	294	u32 rm_namelen; /* request */
	295	char * rm_name; /* request */
	296	struct nfsd4_change_info rm_cinfo; /* response */
	297	};
	298
	299	struct nfsd4_rename {
	300	u32 rn_snamelen; /* request */
	301	char * rn_sname; /* request */
	302	u32 rn_tnamelen; /* request */
	303	char * rn_tname; /* request */
	304	struct nfsd4_change_info rn_sinfo; /* response */
	305	struct nfsd4_change_info rn_tinfo; /* response */
	306	};
	307
dcb488a3 AA	308	struct nfsd4_secinfo {
	309	u32 si_namelen; /* request */
	310	char si_name; / request */
	311	struct svc_export si_exp; / response */
	312	};
	313
1da177e4 LT	314	struct nfsd4_setattr {
1da177e4 LT	315	stateid_t sa_stateid; /* request */
7e705706	316	u32 sa_bmval[3]; /* request */
1da177e4 LT	317	struct iattr sa_iattr; /* request */
	318	struct nfs4_acl *sa_acl;
	319	};
	320
	321	struct nfsd4_setclientid {
	322	nfs4_verifier se_verf; /* request */
	323	u32 se_namelen; /* request */
	324	char * se_name; /* request */
	325	u32 se_callback_prog; /* request */
	326	u32 se_callback_netid_len; /* request */
	327	char * se_callback_netid_val; /* request */
	328	u32 se_callback_addr_len; /* request */
	329	char * se_callback_addr_val; /* request */
	330	u32 se_callback_ident; /* request */
	331	clientid_t se_clientid; /* response */
	332	nfs4_verifier se_confirm; /* response */
	333	};
	334
	335	struct nfsd4_setclientid_confirm {
	336	clientid_t sc_clientid;
	337	nfs4_verifier sc_confirm;
	338	};
	339
	340	/* also used for NVERIFY */
	341	struct nfsd4_verify {
7e705706	342	u32 ve_bmval[3]; /* request */
1da177e4 LT	343	u32 ve_attrlen; /* request */
	344	char * ve_attrval; /* request */
	345	};
	346
	347	struct nfsd4_write {
	348	stateid_t wr_stateid; /* request */
	349	u64 wr_offset; /* request */
	350	u32 wr_stable_how; /* request */
	351	u32 wr_buflen; /* request */
1da177e4 LT	352	int wr_vlen;
	353
	354	u32 wr_bytes_written; /* response */
	355	u32 wr_how_written; /* response */
	356	nfs4_verifier wr_verifier; /* response */
	357	};
	358
2db134eb	359	struct nfsd4_exchange_id {
0733d213 AA	360	nfs4_verifier verifier;
	361	struct xdr_netobj clname;
	362	u32 flags;
	363	clientid_t clientid;
	364	u32 seqid;
	365	int spa_how;
2db134eb AA	366	};
2db134eb AA	367
2db134eb	368	struct nfsd4_sequence {
b85d4c01 BH	369	struct nfs4_sessionid sessionid; /* request/response */
	370	u32 seqid; /* request/response */
	371	u32 slotid; /* request/response */
	372	u32 maxslots; /* request/response */
	373	u32 cachethis; /* request */
	374	#if 0
	375	u32 target_maxslots; /* response */
	376	u32 status_flags; /* response */
	377	#endif /* not yet */
2db134eb AA	378	};
	379
	380	struct nfsd4_destroy_session {
e10e0cfc	381	struct nfs4_sessionid sessionid;
2db134eb AA	382	};
2db134eb AA	383
4dc6ec00 BF	384	struct nfsd4_reclaim_complete {
	385	u32 rca_one_fs;
	386	};
	387
1da177e4 LT	388	struct nfsd4_op {
1da177e4 LT	389	int opnum;
b37ad28b	390	__be32 status;
1da177e4 LT	391	union {
	392	struct nfsd4_access access;
	393	struct nfsd4_close close;
	394	struct nfsd4_commit commit;
	395	struct nfsd4_create create;
	396	struct nfsd4_delegreturn delegreturn;
	397	struct nfsd4_getattr getattr;
	398	struct svc_fh * getfh;
	399	struct nfsd4_link link;
	400	struct nfsd4_lock lock;
	401	struct nfsd4_lockt lockt;
	402	struct nfsd4_locku locku;
	403	struct nfsd4_lookup lookup;
	404	struct nfsd4_verify nverify;
	405	struct nfsd4_open open;
	406	struct nfsd4_open_confirm open_confirm;
	407	struct nfsd4_open_downgrade open_downgrade;
	408	struct nfsd4_putfh putfh;
	409	struct nfsd4_read read;
	410	struct nfsd4_readdir readdir;
	411	struct nfsd4_readlink readlink;
	412	struct nfsd4_remove remove;
	413	struct nfsd4_rename rename;
	414	clientid_t renew;
dcb488a3	415	struct nfsd4_secinfo secinfo;
1da177e4 LT	416	struct nfsd4_setattr setattr;
	417	struct nfsd4_setclientid setclientid;
	418	struct nfsd4_setclientid_confirm setclientid_confirm;
	419	struct nfsd4_verify verify;
	420	struct nfsd4_write write;
	421	struct nfsd4_release_lockowner release_lockowner;
2db134eb AA	422
	423	/* NFSv4.1 */
	424	struct nfsd4_exchange_id exchange_id;
	425	struct nfsd4_create_session create_session;
	426	struct nfsd4_destroy_session destroy_session;
	427	struct nfsd4_sequence sequence;
4dc6ec00	428	struct nfsd4_reclaim_complete reclaim_complete;
1da177e4 LT	429	} u;
	430	struct nfs4_replay * replay;
	431	};
	432
	433	struct nfsd4_compoundargs {
	434	/* scratch variables for XDR decode */
2ebbc012 AV	435	__be32 * p;
2ebbc012 AV	436	__be32 * end;
1da177e4 LT	437	struct page ** pagelist;
1da177e4 LT	438	int pagelen;
2ebbc012 AV	439	__be32 tmp[8];
2ebbc012 AV	440	__be32 * tmpp;
1da177e4 LT	441	struct tmpbuf {
	442	struct tmpbuf *next;
	443	void (release)(const void );
	444	void *buf;
	445	} *to_free;
	446
	447	struct svc_rqst *rqstp;
	448
	449	u32 taglen;
	450	char * tag;
	451	u32 minorversion;
	452	u32 opcnt;
	453	struct nfsd4_op *ops;
	454	struct nfsd4_op iops[8];
	455	};
	456
	457	struct nfsd4_compoundres {
	458	/* scratch variables for XDR encode */
2ebbc012 AV	459	__be32 * p;
2ebbc012 AV	460	__be32 * end;
1da177e4 LT	461	struct xdr_buf * xbuf;
	462	struct svc_rqst * rqstp;
	463
	464	u32 taglen;
	465	char * tag;
	466	u32 opcnt;
e354d571 AA	467	__be32 * tagp; /* tag, opcount encode location */
e354d571 AA	468	struct nfsd4_compound_state cstate;
1da177e4 LT	469	};
1da177e4 LT	470
bf864a31 AA	471	static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
	472	{
	473	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
468de9e5	474	return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
bf864a31 AA	475	}
	476
	477	static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
	478	{
557ce264	479	return !resp->cstate.slot->sl_cachethis \|\| nfsd4_is_solo_sequence(resp);
bf864a31 AA	480	}
bf864a31 AA	481
1da177e4 LT	482	#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
	483
	484	static inline void
	485	set_change_info(struct nfsd4_change_info cinfo, struct svc_fh fhp)
	486	{
	487	BUG_ON(!fhp->fh_pre_saved \|\| !fhp->fh_post_saved);
	488	cinfo->atomic = 1;
c654b8a9 BF	489	cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
	490	if (cinfo->change_supported) {
	491	cinfo->before_change = fhp->fh_pre_change;
	492	cinfo->after_change = fhp->fh_post_change;
	493	} else {
	494	cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
	495	cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
	496	cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
	497	cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
	498	}
1da177e4 LT	499	}
1da177e4 LT	500
2ebbc012 AV	501	int nfs4svc_encode_voidres(struct svc_rqst , __be32 , void *);
2ebbc012 AV	502	int nfs4svc_decode_compoundargs(struct svc_rqst , __be32 ,
1da177e4	503	struct nfsd4_compoundargs *);
2ebbc012	504	int nfs4svc_encode_compoundres(struct svc_rqst , __be32 ,
1da177e4 LT	505	struct nfsd4_compoundres *);
	506	void nfsd4_encode_operation(struct nfsd4_compoundres , struct nfsd4_op );
	507	void nfsd4_encode_replay(struct nfsd4_compoundres resp, struct nfsd4_op op);
b37ad28b AV	508	__be32 nfsd4_encode_fattr(struct svc_fh fhp, struct svc_export exp,
b37ad28b AV	509	struct dentry dentry, __be32 buffer, int *countp,
406a7ea9	510	u32 bmval, struct svc_rqst , int ignore_crossmnt);
b37ad28b	511	extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
b591480b	512	struct nfsd4_compound_state *,
1da177e4	513	struct nfsd4_setclientid *setclid);
b37ad28b	514	extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
b591480b	515	struct nfsd4_compound_state *,
1da177e4	516	struct nfsd4_setclientid_confirm *setclientid_confirm);
074fe897	517	extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
bf864a31 AA	518	extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
bf864a31 AA	519	struct nfsd4_sequence *seq);
069b6ad4	520	extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
3c4ab2aa BF	521	struct nfsd4_compound_state , struct nfsd4_exchange_id );
3c4ab2aa BF	522	extern __be32 nfsd4_create_session(struct svc_rqst *,
069b6ad4 AA	523	struct nfsd4_compound_state *,
	524	struct nfsd4_create_session *);
	525	extern __be32 nfsd4_sequence(struct svc_rqst *,
	526	struct nfsd4_compound_state *,
	527	struct nfsd4_sequence *);
	528	extern __be32 nfsd4_destroy_session(struct svc_rqst *,
	529	struct nfsd4_compound_state *,
	530	struct nfsd4_destroy_session *);
4dc6ec00	531	__be32 nfsd4_reclaim_complete(struct svc_rqst , struct nfsd4_compound_state , struct nfsd4_reclaim_complete *);
6668958f AA	532	extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
6668958f AA	533	struct nfsd4_open *open);
b37ad28b	534	extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
1da177e4	535	struct svc_fh current_fh, struct nfsd4_open open);
b37ad28b	536	extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
a4f1706a	537	struct nfsd4_compound_state , struct nfsd4_open_confirm oc);
ca364317 BF	538	extern __be32 nfsd4_close(struct svc_rqst *rqstp,
ca364317 BF	539	struct nfsd4_compound_state *,
a4f1706a	540	struct nfsd4_close *close);
b37ad28b	541	extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
a4f1706a BF	542	struct nfsd4_compound_state *,
a4f1706a BF	543	struct nfsd4_open_downgrade *od);
ca364317	544	extern __be32 nfsd4_lock(struct svc_rqst rqstp, struct nfsd4_compound_state ,
a4f1706a	545	struct nfsd4_lock *lock);
ca364317 BF	546	extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
ca364317 BF	547	struct nfsd4_compound_state *,
1da177e4	548	struct nfsd4_lockt *lockt);
ca364317 BF	549	extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
ca364317 BF	550	struct nfsd4_compound_state *,
a4f1706a	551	struct nfsd4_locku *locku);
b37ad28b	552	extern __be32
1da177e4	553	nfsd4_release_lockowner(struct svc_rqst *rqstp,
b591480b	554	struct nfsd4_compound_state *,
1da177e4 LT	555	struct nfsd4_release_lockowner *rlockowner);
1da177e4 LT	556	extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
b37ad28b	557	extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
ca364317	558	struct nfsd4_compound_state , struct nfsd4_delegreturn dr);
b591480b BF	559	extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
b591480b BF	560	struct nfsd4_compound_state , clientid_t clid);
1da177e4 LT	561	#endif
	562
	563	/*
	564	* Local variables:
	565	* c-basic-offset: 8
	566	* End:
	567	*/