[deliverable/linux.git] / include / linux / nfsd / xdr4.h

/*
 *  include/linux/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 <linux/nfsd/state.h>
#include <linux/nfsd/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_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;
	} 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 *);
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 LT	1	/*
	2	* include/linux/nfsd/xdr4.h
	3	*
	4	* Server-side types for NFSv4.
	5	*
	6	* Copyright (c) 2002 The Regents of the University of Michigan.
	7	* All rights reserved.
	8	*
	9	* Kendrick Smith <kmsmith@umich.edu>
	10	* Andy Adamson <andros@umich.edu>
	11	*
	12	* Redistribution and use in source and binary forms, with or without
	13	* modification, are permitted provided that the following conditions
	14	* are met:
	15	*
	16	* 1. Redistributions of source code must retain the above copyright
	17	* notice, this list of conditions and the following disclaimer.
	18	* 2. Redistributions in binary form must reproduce the above copyright
	19	* notice, this list of conditions and the following disclaimer in the
	20	* documentation and/or other materials provided with the distribution.
	21	* 3. Neither the name of the University nor the names of its
	22	* contributors may be used to endorse or promote products derived
	23	* from this software without specific prior written permission.
	24	*
	25	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
	26	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	27	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	28	* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	29	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	30	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	31	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	32	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	33	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	34	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	35	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	36	*
	37	*/
	38
	39	#ifndef _LINUX_NFSD_XDR4_H
	40	#define _LINUX_NFSD_XDR4_H
	41
72579ac9 BH	42	#include <linux/nfsd/state.h>
72579ac9 BH	43	#include <linux/nfsd/nfsd.h>
1da177e4 LT	44
	45	#define NFSD4_MAX_TAGLEN 128
	46	#define XDR_LEN(n) (((n) + 3) & ~3)
	47
ca364317	48	struct nfsd4_compound_state {
e354d571 AA	49	struct svc_fh current_fh;
	50	struct svc_fh save_fh;
	51	struct nfs4_stateowner *replay_owner;
b85d4c01 BH	52	/* For sessions DRC */
	53	struct nfsd4_session *session;
	54	struct nfsd4_slot *slot;
557ce264	55	__be32 *datap;
da3846a2	56	size_t iovlen;
d87a8ade	57	u32 minorversion;
074fe897	58	u32 status;
ca364317 BF	59	};
ca364317 BF	60
6668958f AA	61	static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
	62	{
	63	return cs->slot != NULL;
	64	}
	65
1da177e4 LT	66	struct nfsd4_change_info {
1da177e4 LT	67	u32 atomic;
c654b8a9	68	bool change_supported;
1da177e4 LT	69	u32 before_ctime_sec;
1da177e4 LT	70	u32 before_ctime_nsec;
c654b8a9	71	u64 before_change;
1da177e4 LT	72	u32 after_ctime_sec;
1da177e4 LT	73	u32 after_ctime_nsec;
c654b8a9	74	u64 after_change;
1da177e4 LT	75	};
	76
	77	struct nfsd4_access {
	78	u32 ac_req_access; /* request */
	79	u32 ac_supported; /* response */
	80	u32 ac_resp_access; /* response */
	81	};
	82
	83	struct nfsd4_close {
	84	u32 cl_seqid; /* request */
	85	stateid_t cl_stateid; /* request+response */
	86	struct nfs4_stateowner * cl_stateowner; /* response */
	87	};
	88
	89	struct nfsd4_commit {
	90	u64 co_offset; /* request */
	91	u32 co_count; /* request */
	92	nfs4_verifier co_verf; /* response */
	93	};
	94
	95	struct nfsd4_create {
	96	u32 cr_namelen; /* request */
	97	char * cr_name; /* request */
	98	u32 cr_type; /* request */
	99	union { /* request */
	100	struct {
	101	u32 namelen;
	102	char *name;
	103	} link; /* NF4LNK */
	104	struct {
	105	u32 specdata1;
	106	u32 specdata2;
	107	} dev; /* NF4BLK, NF4CHR */
	108	} u;
7e705706	109	u32 cr_bmval[3]; /* request */
1da177e4 LT	110	struct iattr cr_iattr; /* request */
	111	struct nfsd4_change_info cr_cinfo; /* response */
	112	struct nfs4_acl *cr_acl;
	113	};
	114	#define cr_linklen u.link.namelen
	115	#define cr_linkname u.link.name
	116	#define cr_specdata1 u.dev.specdata1
	117	#define cr_specdata2 u.dev.specdata2
	118
	119	struct nfsd4_delegreturn {
	120	stateid_t dr_stateid;
	121	};
	122
	123	struct nfsd4_getattr {
7e705706	124	u32 ga_bmval[3]; /* request */
1da177e4 LT	125	struct svc_fh ga_fhp; / response */
	126	};
	127
	128	struct nfsd4_link {
	129	u32 li_namelen; /* request */
	130	char * li_name; /* request */
	131	struct nfsd4_change_info li_cinfo; /* response */
	132	};
	133
	134	struct nfsd4_lock_denied {
	135	clientid_t ld_clientid;
	136	struct nfs4_stateowner *ld_sop;
	137	u64 ld_start;
	138	u64 ld_length;
	139	u32 ld_type;
	140	};
	141
	142	struct nfsd4_lock {
	143	/* request */
	144	u32 lk_type;
	145	u32 lk_reclaim; /* boolean */
	146	u64 lk_offset;
	147	u64 lk_length;
	148	u32 lk_is_new;
	149	union {
	150	struct {
	151	u32 open_seqid;
	152	stateid_t open_stateid;
	153	u32 lock_seqid;
	154	clientid_t clientid;
	155	struct xdr_netobj owner;
	156	} new;
	157	struct {
	158	stateid_t lock_stateid;
	159	u32 lock_seqid;
	160	} old;
	161	} v;
	162
	163	/* response */
	164	union {
	165	struct {
	166	stateid_t stateid;
	167	} ok;
	168	struct nfsd4_lock_denied denied;
	169	} u;
3a65588a BF	170	/* The lk_replay_owner is the open owner in the open_to_lock_owner
	171	* case and the lock owner otherwise: */
	172	struct nfs4_stateowner *lk_replay_owner;
1da177e4 LT	173	};
	174	#define lk_new_open_seqid v.new.open_seqid
	175	#define lk_new_open_stateid v.new.open_stateid
	176	#define lk_new_lock_seqid v.new.lock_seqid
	177	#define lk_new_clientid v.new.clientid
	178	#define lk_new_owner v.new.owner
	179	#define lk_old_lock_stateid v.old.lock_stateid
	180	#define lk_old_lock_seqid v.old.lock_seqid
	181
	182	#define lk_rflags u.ok.rflags
	183	#define lk_resp_stateid u.ok.stateid
	184	#define lk_denied u.denied
	185
	186
	187	struct nfsd4_lockt {
	188	u32 lt_type;
	189	clientid_t lt_clientid;
	190	struct xdr_netobj lt_owner;
	191	u64 lt_offset;
	192	u64 lt_length;
	193	struct nfs4_stateowner * lt_stateowner;
	194	struct nfsd4_lock_denied lt_denied;
	195	};
	196
	197
	198	struct nfsd4_locku {
	199	u32 lu_type;
	200	u32 lu_seqid;
	201	stateid_t lu_stateid;
	202	u64 lu_offset;
	203	u64 lu_length;
	204	struct nfs4_stateowner *lu_stateowner;
	205	};
	206
	207
	208	struct nfsd4_lookup {
	209	u32 lo_len; /* request */
	210	char * lo_name; /* request */
	211	};
	212
	213	struct nfsd4_putfh {
	214	u32 pf_fhlen; /* request */
	215	char pf_fhval; / request */
	216	};
	217
	218	struct nfsd4_open {
	219	u32 op_claim_type; /* request */
	220	struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
	221	u32 op_delegate_type; /* request - CLAIM_PREV only */
	222	stateid_t op_delegate_stateid; /* request - response */
	223	u32 op_create; /* request */
	224	u32 op_createmode; /* request */
7e705706	225	u32 op_bmval[3]; /* request */
79fb54ab BH	226	struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
79fb54ab BH	227	nfs4_verifier verf; /* EXCLUSIVE4 */
1da177e4 LT	228	clientid_t op_clientid; /* request */
	229	struct xdr_netobj op_owner; /* request */
	230	u32 op_seqid; /* request */
	231	u32 op_share_access; /* request */
	232	u32 op_share_deny; /* request */
	233	stateid_t op_stateid; /* response */
7b190fec	234	u32 op_recall; /* recall */
1da177e4 LT	235	struct nfsd4_change_info op_cinfo; /* response */
	236	u32 op_rflags; /* response */
	237	int op_truncate; /* used during processing */
	238	struct nfs4_stateowner op_stateowner; / used during processing */
	239	struct nfs4_acl *op_acl;
	240	};
79fb54ab BH	241	#define op_iattr iattr
79fb54ab BH	242	#define op_verf verf
1da177e4 LT	243
	244	struct nfsd4_open_confirm {
	245	stateid_t oc_req_stateid /* request */;
	246	u32 oc_seqid /* request */;
	247	stateid_t oc_resp_stateid /* response */;
	248	struct nfs4_stateowner * oc_stateowner; /* response */
	249	};
	250
	251	struct nfsd4_open_downgrade {
	252	stateid_t od_stateid;
	253	u32 od_seqid;
	254	u32 od_share_access;
	255	u32 od_share_deny;
	256	struct nfs4_stateowner *od_stateowner;
	257	};
	258
	259
	260	struct nfsd4_read {
	261	stateid_t rd_stateid; /* request */
	262	u64 rd_offset; /* request */
	263	u32 rd_length; /* request */
1da177e4 LT	264	int rd_vlen;
	265	struct file *rd_filp;
	266
	267	struct svc_rqst rd_rqstp; / response */
	268	struct svc_fh * rd_fhp; /* response */
	269	};
	270
	271	struct nfsd4_readdir {
	272	u64 rd_cookie; /* request */
	273	nfs4_verifier rd_verf; /* request */
	274	u32 rd_dircount; /* request */
	275	u32 rd_maxcount; /* request */
7e705706	276	u32 rd_bmval[3]; /* request */
1da177e4 LT	277	struct svc_rqst rd_rqstp; / response */
	278	struct svc_fh * rd_fhp; /* response */
	279
	280	struct readdir_cd common;
2ebbc012	281	__be32 * buffer;
1da177e4	282	int buflen;
2ebbc012	283	__be32 * offset;
1da177e4 LT	284	};
	285
	286	struct nfsd4_release_lockowner {
	287	clientid_t rl_clientid;
	288	struct xdr_netobj rl_owner;
	289	};
	290	struct nfsd4_readlink {
	291	struct svc_rqst rl_rqstp; / request */
	292	struct svc_fh * rl_fhp; /* request */
	293	};
	294
	295	struct nfsd4_remove {
	296	u32 rm_namelen; /* request */
	297	char * rm_name; /* request */
	298	struct nfsd4_change_info rm_cinfo; /* response */
	299	};
	300
	301	struct nfsd4_rename {
	302	u32 rn_snamelen; /* request */
	303	char * rn_sname; /* request */
	304	u32 rn_tnamelen; /* request */
	305	char * rn_tname; /* request */
	306	struct nfsd4_change_info rn_sinfo; /* response */
	307	struct nfsd4_change_info rn_tinfo; /* response */
	308	};
	309
dcb488a3 AA	310	struct nfsd4_secinfo {
	311	u32 si_namelen; /* request */
	312	char si_name; / request */
	313	struct svc_export si_exp; / response */
	314	};
	315
1da177e4 LT	316	struct nfsd4_setattr {
1da177e4 LT	317	stateid_t sa_stateid; /* request */
7e705706	318	u32 sa_bmval[3]; /* request */
1da177e4 LT	319	struct iattr sa_iattr; /* request */
	320	struct nfs4_acl *sa_acl;
	321	};
	322
	323	struct nfsd4_setclientid {
	324	nfs4_verifier se_verf; /* request */
	325	u32 se_namelen; /* request */
	326	char * se_name; /* request */
	327	u32 se_callback_prog; /* request */
	328	u32 se_callback_netid_len; /* request */
	329	char * se_callback_netid_val; /* request */
	330	u32 se_callback_addr_len; /* request */
	331	char * se_callback_addr_val; /* request */
	332	u32 se_callback_ident; /* request */
	333	clientid_t se_clientid; /* response */
	334	nfs4_verifier se_confirm; /* response */
	335	};
	336
	337	struct nfsd4_setclientid_confirm {
	338	clientid_t sc_clientid;
	339	nfs4_verifier sc_confirm;
	340	};
	341
	342	/* also used for NVERIFY */
	343	struct nfsd4_verify {
7e705706	344	u32 ve_bmval[3]; /* request */
1da177e4 LT	345	u32 ve_attrlen; /* request */
	346	char * ve_attrval; /* request */
	347	};
	348
	349	struct nfsd4_write {
	350	stateid_t wr_stateid; /* request */
	351	u64 wr_offset; /* request */
	352	u32 wr_stable_how; /* request */
	353	u32 wr_buflen; /* request */
1da177e4 LT	354	int wr_vlen;
	355
	356	u32 wr_bytes_written; /* response */
	357	u32 wr_how_written; /* response */
	358	nfs4_verifier wr_verifier; /* response */
	359	};
	360
2db134eb	361	struct nfsd4_exchange_id {
0733d213 AA	362	nfs4_verifier verifier;
	363	struct xdr_netobj clname;
	364	u32 flags;
	365	clientid_t clientid;
	366	u32 seqid;
	367	int spa_how;
2db134eb AA	368	};
2db134eb AA	369
2db134eb	370	struct nfsd4_sequence {
b85d4c01 BH	371	struct nfs4_sessionid sessionid; /* request/response */
	372	u32 seqid; /* request/response */
	373	u32 slotid; /* request/response */
	374	u32 maxslots; /* request/response */
	375	u32 cachethis; /* request */
	376	#if 0
	377	u32 target_maxslots; /* response */
	378	u32 status_flags; /* response */
	379	#endif /* not yet */
2db134eb AA	380	};
	381
	382	struct nfsd4_destroy_session {
e10e0cfc	383	struct nfs4_sessionid sessionid;
2db134eb AA	384	};
2db134eb AA	385
1da177e4 LT	386	struct nfsd4_op {
1da177e4 LT	387	int opnum;
b37ad28b	388	__be32 status;
1da177e4 LT	389	union {
	390	struct nfsd4_access access;
	391	struct nfsd4_close close;
	392	struct nfsd4_commit commit;
	393	struct nfsd4_create create;
	394	struct nfsd4_delegreturn delegreturn;
	395	struct nfsd4_getattr getattr;
	396	struct svc_fh * getfh;
	397	struct nfsd4_link link;
	398	struct nfsd4_lock lock;
	399	struct nfsd4_lockt lockt;
	400	struct nfsd4_locku locku;
	401	struct nfsd4_lookup lookup;
	402	struct nfsd4_verify nverify;
	403	struct nfsd4_open open;
	404	struct nfsd4_open_confirm open_confirm;
	405	struct nfsd4_open_downgrade open_downgrade;
	406	struct nfsd4_putfh putfh;
	407	struct nfsd4_read read;
	408	struct nfsd4_readdir readdir;
	409	struct nfsd4_readlink readlink;
	410	struct nfsd4_remove remove;
	411	struct nfsd4_rename rename;
	412	clientid_t renew;
dcb488a3	413	struct nfsd4_secinfo secinfo;
1da177e4 LT	414	struct nfsd4_setattr setattr;
	415	struct nfsd4_setclientid setclientid;
	416	struct nfsd4_setclientid_confirm setclientid_confirm;
	417	struct nfsd4_verify verify;
	418	struct nfsd4_write write;
	419	struct nfsd4_release_lockowner release_lockowner;
2db134eb AA	420
	421	/* NFSv4.1 */
	422	struct nfsd4_exchange_id exchange_id;
	423	struct nfsd4_create_session create_session;
	424	struct nfsd4_destroy_session destroy_session;
	425	struct nfsd4_sequence sequence;
1da177e4 LT	426	} u;
	427	struct nfs4_replay * replay;
	428	};
	429
	430	struct nfsd4_compoundargs {
	431	/* scratch variables for XDR decode */
2ebbc012 AV	432	__be32 * p;
2ebbc012 AV	433	__be32 * end;
1da177e4 LT	434	struct page ** pagelist;
1da177e4 LT	435	int pagelen;
2ebbc012 AV	436	__be32 tmp[8];
2ebbc012 AV	437	__be32 * tmpp;
1da177e4 LT	438	struct tmpbuf {
	439	struct tmpbuf *next;
	440	void (release)(const void );
	441	void *buf;
	442	} *to_free;
	443
	444	struct svc_rqst *rqstp;
	445
	446	u32 taglen;
	447	char * tag;
	448	u32 minorversion;
	449	u32 opcnt;
	450	struct nfsd4_op *ops;
	451	struct nfsd4_op iops[8];
	452	};
	453
	454	struct nfsd4_compoundres {
	455	/* scratch variables for XDR encode */
2ebbc012 AV	456	__be32 * p;
2ebbc012 AV	457	__be32 * end;
1da177e4 LT	458	struct xdr_buf * xbuf;
	459	struct svc_rqst * rqstp;
	460
	461	u32 taglen;
	462	char * tag;
	463	u32 opcnt;
e354d571 AA	464	__be32 * tagp; /* tag, opcount encode location */
e354d571 AA	465	struct nfsd4_compound_state cstate;
1da177e4 LT	466	};
1da177e4 LT	467
bf864a31 AA	468	static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
	469	{
	470	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
468de9e5	471	return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
bf864a31 AA	472	}
	473
	474	static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
	475	{
557ce264	476	return !resp->cstate.slot->sl_cachethis \|\| nfsd4_is_solo_sequence(resp);
bf864a31 AA	477	}
bf864a31 AA	478
1da177e4 LT	479	#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
	480
	481	static inline void
	482	set_change_info(struct nfsd4_change_info cinfo, struct svc_fh fhp)
	483	{
	484	BUG_ON(!fhp->fh_pre_saved \|\| !fhp->fh_post_saved);
	485	cinfo->atomic = 1;
c654b8a9 BF	486	cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
	487	if (cinfo->change_supported) {
	488	cinfo->before_change = fhp->fh_pre_change;
	489	cinfo->after_change = fhp->fh_post_change;
	490	} else {
	491	cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
	492	cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
	493	cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
	494	cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
	495	}
1da177e4 LT	496	}
1da177e4 LT	497
2ebbc012 AV	498	int nfs4svc_encode_voidres(struct svc_rqst , __be32 , void *);
2ebbc012 AV	499	int nfs4svc_decode_compoundargs(struct svc_rqst , __be32 ,
1da177e4	500	struct nfsd4_compoundargs *);
2ebbc012	501	int nfs4svc_encode_compoundres(struct svc_rqst , __be32 ,
1da177e4 LT	502	struct nfsd4_compoundres *);
	503	void nfsd4_encode_operation(struct nfsd4_compoundres , struct nfsd4_op );
	504	void nfsd4_encode_replay(struct nfsd4_compoundres resp, struct nfsd4_op op);
b37ad28b AV	505	__be32 nfsd4_encode_fattr(struct svc_fh fhp, struct svc_export exp,
b37ad28b AV	506	struct dentry dentry, __be32 buffer, int *countp,
406a7ea9	507	u32 bmval, struct svc_rqst , int ignore_crossmnt);
b37ad28b	508	extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
b591480b	509	struct nfsd4_compound_state *,
1da177e4	510	struct nfsd4_setclientid *setclid);
b37ad28b	511	extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
b591480b	512	struct nfsd4_compound_state *,
1da177e4	513	struct nfsd4_setclientid_confirm *setclientid_confirm);
074fe897	514	extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
bf864a31 AA	515	extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
bf864a31 AA	516	struct nfsd4_sequence *seq);
069b6ad4 AA	517	extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
	518	struct nfsd4_compound_state *,
	519	struct nfsd4_exchange_id *);
	520	extern __be32 nfsd4_create_session(struct svc_rqst *,
	521	struct nfsd4_compound_state *,
	522	struct nfsd4_create_session *);
	523	extern __be32 nfsd4_sequence(struct svc_rqst *,
	524	struct nfsd4_compound_state *,
	525	struct nfsd4_sequence *);
	526	extern __be32 nfsd4_destroy_session(struct svc_rqst *,
	527	struct nfsd4_compound_state *,
	528	struct nfsd4_destroy_session *);
6668958f AA	529	extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
6668958f AA	530	struct nfsd4_open *open);
b37ad28b	531	extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
1da177e4	532	struct svc_fh current_fh, struct nfsd4_open open);
b37ad28b	533	extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
a4f1706a	534	struct nfsd4_compound_state , struct nfsd4_open_confirm oc);
ca364317 BF	535	extern __be32 nfsd4_close(struct svc_rqst *rqstp,
ca364317 BF	536	struct nfsd4_compound_state *,
a4f1706a	537	struct nfsd4_close *close);
b37ad28b	538	extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
a4f1706a BF	539	struct nfsd4_compound_state *,
a4f1706a BF	540	struct nfsd4_open_downgrade *od);
ca364317	541	extern __be32 nfsd4_lock(struct svc_rqst rqstp, struct nfsd4_compound_state ,
a4f1706a	542	struct nfsd4_lock *lock);
ca364317 BF	543	extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
ca364317 BF	544	struct nfsd4_compound_state *,
1da177e4	545	struct nfsd4_lockt *lockt);
ca364317 BF	546	extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
ca364317 BF	547	struct nfsd4_compound_state *,
a4f1706a	548	struct nfsd4_locku *locku);
b37ad28b	549	extern __be32
1da177e4	550	nfsd4_release_lockowner(struct svc_rqst *rqstp,
b591480b	551	struct nfsd4_compound_state *,
1da177e4 LT	552	struct nfsd4_release_lockowner *rlockowner);
1da177e4 LT	553	extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
b37ad28b	554	extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
ca364317	555	struct nfsd4_compound_state , struct nfsd4_delegreturn dr);
b591480b BF	556	extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
b591480b BF	557	struct nfsd4_compound_state , clientid_t clid);
1da177e4 LT	558	#endif
	559
	560	/*
	561	* Local variables:
	562	* c-basic-offset: 8
	563	* End:
	564	*/