[mirror_ubuntu-zesty-kernel.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 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 xdr_netobj	ld_owner;
	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;
};
#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 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 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_openowner *op_openowner; /* 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 nfsd4_open_downgrade {
	stateid_t       od_stateid;
	u32             od_seqid;
	u32             od_share_access;
	u32             od_share_deny;
};


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_secinfo_no_name {
	u32 sin_style;					/* request */
	struct svc_export *sin_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 */
	struct xdr_netobj se_name;
	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;
};

struct nfsd4_saved_compoundargs {
	__be32 *p;
	__be32 *end;
	int pagelen;
	struct page **pagelist;
};

struct nfsd4_test_stateid {
	__be32		ts_num_ids;
	struct nfsd4_compoundargs *ts_saved_args;
	struct nfsd4_saved_compoundargs ts_savedp;
};

struct nfsd4_free_stateid {
	stateid_t	fr_stateid;         /* request */
	__be32		fr_status;          /* response */
};

/* 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 */
#endif /* not yet */
	u32			status_flags;		/* response */
};

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_bind_conn_to_session bind_conn_to_session;
		struct nfsd4_create_session	create_session;
		struct nfsd4_destroy_session	destroy_session;
		struct nfsd4_sequence		sequence;
		struct nfsd4_reclaim_complete	reclaim_complete;
		struct nfsd4_test_stateid	test_stateid;
		struct nfsd4_free_stateid	free_stateid;
	} u;
	struct nfs4_replay *			replay;
};

bool nfsd4_cache_this_op(struct nfsd4_op *);

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];
	int				cachetype;
};

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);
	cinfo->atomic = fhp->fh_post_saved;
	cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);

	cinfo->before_change = fhp->fh_pre_change;
	cinfo->after_change = fhp->fh_post_change;
	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 *);
int nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
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_bind_conn_to_session(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_bind_conn_to_session *);
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 int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
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);
extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
#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 */
1da177e4 LT	84	};
	85
	86	struct nfsd4_commit {
	87	u64 co_offset; /* request */
	88	u32 co_count; /* request */
	89	nfs4_verifier co_verf; /* response */
	90	};
	91
	92	struct nfsd4_create {
	93	u32 cr_namelen; /* request */
	94	char * cr_name; /* request */
	95	u32 cr_type; /* request */
	96	union { /* request */
	97	struct {
	98	u32 namelen;
	99	char *name;
	100	} link; /* NF4LNK */
	101	struct {
	102	u32 specdata1;
	103	u32 specdata2;
	104	} dev; /* NF4BLK, NF4CHR */
	105	} u;
7e705706	106	u32 cr_bmval[3]; /* request */
1da177e4 LT	107	struct iattr cr_iattr; /* request */
	108	struct nfsd4_change_info cr_cinfo; /* response */
	109	struct nfs4_acl *cr_acl;
	110	};
	111	#define cr_linklen u.link.namelen
	112	#define cr_linkname u.link.name
	113	#define cr_specdata1 u.dev.specdata1
	114	#define cr_specdata2 u.dev.specdata2
	115
	116	struct nfsd4_delegreturn {
	117	stateid_t dr_stateid;
	118	};
	119
	120	struct nfsd4_getattr {
7e705706	121	u32 ga_bmval[3]; /* request */
1da177e4 LT	122	struct svc_fh ga_fhp; / response */
	123	};
	124
	125	struct nfsd4_link {
	126	u32 li_namelen; /* request */
	127	char * li_name; /* request */
	128	struct nfsd4_change_info li_cinfo; /* response */
	129	};
	130
	131	struct nfsd4_lock_denied {
	132	clientid_t ld_clientid;
7c13f344	133	struct xdr_netobj ld_owner;
1da177e4 LT	134	u64 ld_start;
	135	u64 ld_length;
	136	u32 ld_type;
	137	};
	138
	139	struct nfsd4_lock {
	140	/* request */
	141	u32 lk_type;
	142	u32 lk_reclaim; /* boolean */
	143	u64 lk_offset;
	144	u64 lk_length;
	145	u32 lk_is_new;
	146	union {
	147	struct {
	148	u32 open_seqid;
	149	stateid_t open_stateid;
	150	u32 lock_seqid;
	151	clientid_t clientid;
	152	struct xdr_netobj owner;
	153	} new;
	154	struct {
	155	stateid_t lock_stateid;
	156	u32 lock_seqid;
	157	} old;
	158	} v;
	159
	160	/* response */
	161	union {
	162	struct {
	163	stateid_t stateid;
	164	} ok;
	165	struct nfsd4_lock_denied denied;
	166	} u;
1da177e4 LT	167	};
	168	#define lk_new_open_seqid v.new.open_seqid
	169	#define lk_new_open_stateid v.new.open_stateid
	170	#define lk_new_lock_seqid v.new.lock_seqid
	171	#define lk_new_clientid v.new.clientid
	172	#define lk_new_owner v.new.owner
	173	#define lk_old_lock_stateid v.old.lock_stateid
	174	#define lk_old_lock_seqid v.old.lock_seqid
	175
	176	#define lk_rflags u.ok.rflags
	177	#define lk_resp_stateid u.ok.stateid
	178	#define lk_denied u.denied
	179
	180
	181	struct nfsd4_lockt {
	182	u32 lt_type;
	183	clientid_t lt_clientid;
	184	struct xdr_netobj lt_owner;
	185	u64 lt_offset;
	186	u64 lt_length;
1da177e4 LT	187	struct nfsd4_lock_denied lt_denied;
	188	};
	189
	190
	191	struct nfsd4_locku {
	192	u32 lu_type;
	193	u32 lu_seqid;
	194	stateid_t lu_stateid;
	195	u64 lu_offset;
	196	u64 lu_length;
1da177e4 LT	197	};
	198
	199
	200	struct nfsd4_lookup {
	201	u32 lo_len; /* request */
	202	char * lo_name; /* request */
	203	};
	204
	205	struct nfsd4_putfh {
	206	u32 pf_fhlen; /* request */
	207	char pf_fhval; / request */
	208	};
	209
	210	struct nfsd4_open {
	211	u32 op_claim_type; /* request */
	212	struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
	213	u32 op_delegate_type; /* request - CLAIM_PREV only */
	214	stateid_t op_delegate_stateid; /* request - response */
	215	u32 op_create; /* request */
	216	u32 op_createmode; /* request */
7e705706	217	u32 op_bmval[3]; /* request */
79fb54ab BH	218	struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
79fb54ab BH	219	nfs4_verifier verf; /* EXCLUSIVE4 */
1da177e4 LT	220	clientid_t op_clientid; /* request */
	221	struct xdr_netobj op_owner; /* request */
	222	u32 op_seqid; /* request */
	223	u32 op_share_access; /* request */
	224	u32 op_share_deny; /* request */
	225	stateid_t op_stateid; /* response */
7b190fec	226	u32 op_recall; /* recall */
1da177e4 LT	227	struct nfsd4_change_info op_cinfo; /* response */
	228	u32 op_rflags; /* response */
	229	int op_truncate; /* used during processing */
fe0750e5	230	struct nfs4_openowner op_openowner; / used during processing */
1da177e4 LT	231	struct nfs4_acl *op_acl;
1da177e4 LT	232	};
79fb54ab BH	233	#define op_iattr iattr
79fb54ab BH	234	#define op_verf verf
1da177e4 LT	235
	236	struct nfsd4_open_confirm {
	237	stateid_t oc_req_stateid /* request */;
	238	u32 oc_seqid /* request */;
	239	stateid_t oc_resp_stateid /* response */;
1da177e4 LT	240	};
	241
	242	struct nfsd4_open_downgrade {
	243	stateid_t od_stateid;
	244	u32 od_seqid;
	245	u32 od_share_access;
	246	u32 od_share_deny;
1da177e4 LT	247	};
	248
	249
	250	struct nfsd4_read {
	251	stateid_t rd_stateid; /* request */
	252	u64 rd_offset; /* request */
	253	u32 rd_length; /* request */
1da177e4 LT	254	int rd_vlen;
	255	struct file *rd_filp;
	256
	257	struct svc_rqst rd_rqstp; / response */
	258	struct svc_fh * rd_fhp; /* response */
	259	};
	260
	261	struct nfsd4_readdir {
	262	u64 rd_cookie; /* request */
	263	nfs4_verifier rd_verf; /* request */
	264	u32 rd_dircount; /* request */
	265	u32 rd_maxcount; /* request */
7e705706	266	u32 rd_bmval[3]; /* request */
1da177e4 LT	267	struct svc_rqst rd_rqstp; / response */
	268	struct svc_fh * rd_fhp; /* response */
	269
	270	struct readdir_cd common;
2ebbc012	271	__be32 * buffer;
1da177e4	272	int buflen;
2ebbc012	273	__be32 * offset;
1da177e4 LT	274	};
	275
	276	struct nfsd4_release_lockowner {
	277	clientid_t rl_clientid;
	278	struct xdr_netobj rl_owner;
	279	};
	280	struct nfsd4_readlink {
	281	struct svc_rqst rl_rqstp; / request */
	282	struct svc_fh * rl_fhp; /* request */
	283	};
	284
	285	struct nfsd4_remove {
	286	u32 rm_namelen; /* request */
	287	char * rm_name; /* request */
	288	struct nfsd4_change_info rm_cinfo; /* response */
	289	};
	290
	291	struct nfsd4_rename {
	292	u32 rn_snamelen; /* request */
	293	char * rn_sname; /* request */
	294	u32 rn_tnamelen; /* request */
	295	char * rn_tname; /* request */
	296	struct nfsd4_change_info rn_sinfo; /* response */
	297	struct nfsd4_change_info rn_tinfo; /* response */
	298	};
	299
dcb488a3 AA	300	struct nfsd4_secinfo {
	301	u32 si_namelen; /* request */
	302	char si_name; / request */
	303	struct svc_export si_exp; / response */
	304	};
	305
04f4ad16 BF	306	struct nfsd4_secinfo_no_name {
	307	u32 sin_style; /* request */
	308	struct svc_export sin_exp; / response */
	309	};
	310
1da177e4 LT	311	struct nfsd4_setattr {
1da177e4 LT	312	stateid_t sa_stateid; /* request */
7e705706	313	u32 sa_bmval[3]; /* request */
1da177e4 LT	314	struct iattr sa_iattr; /* request */
	315	struct nfs4_acl *sa_acl;
	316	};
	317
	318	struct nfsd4_setclientid {
	319	nfs4_verifier se_verf; /* request */
a084daf5	320	struct xdr_netobj se_name;
1da177e4 LT	321	u32 se_callback_prog; /* request */
	322	u32 se_callback_netid_len; /* request */
	323	char * se_callback_netid_val; /* request */
	324	u32 se_callback_addr_len; /* request */
	325	char * se_callback_addr_val; /* request */
	326	u32 se_callback_ident; /* request */
	327	clientid_t se_clientid; /* response */
	328	nfs4_verifier se_confirm; /* response */
	329	};
	330
	331	struct nfsd4_setclientid_confirm {
	332	clientid_t sc_clientid;
	333	nfs4_verifier sc_confirm;
	334	};
	335
17456804 BS	336	struct nfsd4_saved_compoundargs {
	337	__be32 *p;
	338	__be32 *end;
	339	int pagelen;
	340	struct page **pagelist;
	341	};
	342
	343	struct nfsd4_test_stateid {
	344	__be32 ts_num_ids;
17456804 BS	345	struct nfsd4_compoundargs *ts_saved_args;
	346	struct nfsd4_saved_compoundargs ts_savedp;
	347	};
	348
e1ca12df BS	349	struct nfsd4_free_stateid {
	350	stateid_t fr_stateid; /* request */
	351	__be32 fr_status; /* response */
	352	};
	353
1da177e4 LT	354	/* also used for NVERIFY */
1da177e4 LT	355	struct nfsd4_verify {
7e705706	356	u32 ve_bmval[3]; /* request */
1da177e4 LT	357	u32 ve_attrlen; /* request */
	358	char * ve_attrval; /* request */
	359	};
	360
	361	struct nfsd4_write {
	362	stateid_t wr_stateid; /* request */
	363	u64 wr_offset; /* request */
	364	u32 wr_stable_how; /* request */
	365	u32 wr_buflen; /* request */
1da177e4 LT	366	int wr_vlen;
	367
	368	u32 wr_bytes_written; /* response */
	369	u32 wr_how_written; /* response */
	370	nfs4_verifier wr_verifier; /* response */
	371	};
	372
2db134eb	373	struct nfsd4_exchange_id {
0733d213 AA	374	nfs4_verifier verifier;
	375	struct xdr_netobj clname;
	376	u32 flags;
	377	clientid_t clientid;
	378	u32 seqid;
	379	int spa_how;
2db134eb AA	380	};
2db134eb AA	381
2db134eb	382	struct nfsd4_sequence {
b85d4c01 BH	383	struct nfs4_sessionid sessionid; /* request/response */
	384	u32 seqid; /* request/response */
	385	u32 slotid; /* request/response */
	386	u32 maxslots; /* request/response */
	387	u32 cachethis; /* request */
	388	#if 0
	389	u32 target_maxslots; /* response */
b85d4c01	390	#endif /* not yet */
0d7bb719	391	u32 status_flags; /* response */
2db134eb AA	392	};
	393
	394	struct nfsd4_destroy_session {
e10e0cfc	395	struct nfs4_sessionid sessionid;
2db134eb AA	396	};
2db134eb AA	397
4dc6ec00 BF	398	struct nfsd4_reclaim_complete {
	399	u32 rca_one_fs;
	400	};
	401
1da177e4 LT	402	struct nfsd4_op {
1da177e4 LT	403	int opnum;
b37ad28b	404	__be32 status;
1da177e4 LT	405	union {
	406	struct nfsd4_access access;
	407	struct nfsd4_close close;
	408	struct nfsd4_commit commit;
	409	struct nfsd4_create create;
	410	struct nfsd4_delegreturn delegreturn;
	411	struct nfsd4_getattr getattr;
	412	struct svc_fh * getfh;
	413	struct nfsd4_link link;
	414	struct nfsd4_lock lock;
	415	struct nfsd4_lockt lockt;
	416	struct nfsd4_locku locku;
	417	struct nfsd4_lookup lookup;
	418	struct nfsd4_verify nverify;
	419	struct nfsd4_open open;
	420	struct nfsd4_open_confirm open_confirm;
	421	struct nfsd4_open_downgrade open_downgrade;
	422	struct nfsd4_putfh putfh;
	423	struct nfsd4_read read;
	424	struct nfsd4_readdir readdir;
	425	struct nfsd4_readlink readlink;
	426	struct nfsd4_remove remove;
	427	struct nfsd4_rename rename;
	428	clientid_t renew;
dcb488a3	429	struct nfsd4_secinfo secinfo;
1da177e4 LT	430	struct nfsd4_setattr setattr;
	431	struct nfsd4_setclientid setclientid;
	432	struct nfsd4_setclientid_confirm setclientid_confirm;
	433	struct nfsd4_verify verify;
	434	struct nfsd4_write write;
	435	struct nfsd4_release_lockowner release_lockowner;
2db134eb AA	436
	437	/* NFSv4.1 */
	438	struct nfsd4_exchange_id exchange_id;
1d1bc8f2	439	struct nfsd4_bind_conn_to_session bind_conn_to_session;
2db134eb AA	440	struct nfsd4_create_session create_session;
	441	struct nfsd4_destroy_session destroy_session;
	442	struct nfsd4_sequence sequence;
4dc6ec00	443	struct nfsd4_reclaim_complete reclaim_complete;
17456804	444	struct nfsd4_test_stateid test_stateid;
e1ca12df	445	struct nfsd4_free_stateid free_stateid;
1da177e4 LT	446	} u;
	447	struct nfs4_replay * replay;
	448	};
	449
1091006c BF	450	bool nfsd4_cache_this_op(struct nfsd4_op *);
1091006c BF	451
1da177e4 LT	452	struct nfsd4_compoundargs {
1da177e4 LT	453	/* scratch variables for XDR decode */
2ebbc012 AV	454	__be32 * p;
2ebbc012 AV	455	__be32 * end;
1da177e4 LT	456	struct page ** pagelist;
1da177e4 LT	457	int pagelen;
2ebbc012 AV	458	__be32 tmp[8];
2ebbc012 AV	459	__be32 * tmpp;
1da177e4 LT	460	struct tmpbuf {
	461	struct tmpbuf *next;
	462	void (release)(const void );
	463	void *buf;
	464	} *to_free;
	465
	466	struct svc_rqst *rqstp;
	467
	468	u32 taglen;
	469	char * tag;
	470	u32 minorversion;
	471	u32 opcnt;
	472	struct nfsd4_op *ops;
	473	struct nfsd4_op iops[8];
1091006c	474	int cachetype;
1da177e4 LT	475	};
	476
	477	struct nfsd4_compoundres {
	478	/* scratch variables for XDR encode */
2ebbc012 AV	479	__be32 * p;
2ebbc012 AV	480	__be32 * end;
1da177e4 LT	481	struct xdr_buf * xbuf;
	482	struct svc_rqst * rqstp;
	483
	484	u32 taglen;
	485	char * tag;
	486	u32 opcnt;
e354d571 AA	487	__be32 * tagp; /* tag, opcount encode location */
e354d571 AA	488	struct nfsd4_compound_state cstate;
1da177e4 LT	489	};
1da177e4 LT	490
bf864a31 AA	491	static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
	492	{
	493	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
468de9e5	494	return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
bf864a31 AA	495	}
	496
	497	static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
	498	{
557ce264	499	return !resp->cstate.slot->sl_cachethis \|\| nfsd4_is_solo_sequence(resp);
bf864a31 AA	500	}
bf864a31 AA	501
1da177e4 LT	502	#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
	503
	504	static inline void
	505	set_change_info(struct nfsd4_change_info cinfo, struct svc_fh fhp)
	506	{
c1ac3ffc NB	507	BUG_ON(!fhp->fh_pre_saved);
c1ac3ffc NB	508	cinfo->atomic = fhp->fh_post_saved;
c654b8a9	509	cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
c1ac3ffc NB	510
	511	cinfo->before_change = fhp->fh_pre_change;
	512	cinfo->after_change = fhp->fh_post_change;
	513	cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
	514	cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
	515	cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
	516	cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
	517
1da177e4 LT	518	}
1da177e4 LT	519
2ebbc012 AV	520	int nfs4svc_encode_voidres(struct svc_rqst , __be32 , void *);
2ebbc012 AV	521	int nfs4svc_decode_compoundargs(struct svc_rqst , __be32 ,
1da177e4	522	struct nfsd4_compoundargs *);
2ebbc012	523	int nfs4svc_encode_compoundres(struct svc_rqst , __be32 ,
1da177e4	524	struct nfsd4_compoundres *);
58e7b33a	525	int nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
1da177e4 LT	526	void nfsd4_encode_operation(struct nfsd4_compoundres , struct nfsd4_op );
1da177e4 LT	527	void nfsd4_encode_replay(struct nfsd4_compoundres resp, struct nfsd4_op op);
b37ad28b AV	528	__be32 nfsd4_encode_fattr(struct svc_fh fhp, struct svc_export exp,
b37ad28b AV	529	struct dentry dentry, __be32 buffer, int *countp,
406a7ea9	530	u32 bmval, struct svc_rqst , int ignore_crossmnt);
b37ad28b	531	extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
b591480b	532	struct nfsd4_compound_state *,
1da177e4	533	struct nfsd4_setclientid *setclid);
b37ad28b	534	extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
b591480b	535	struct nfsd4_compound_state *,
1da177e4	536	struct nfsd4_setclientid_confirm *setclientid_confirm);
074fe897	537	extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
bf864a31 AA	538	extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
bf864a31 AA	539	struct nfsd4_sequence *seq);
069b6ad4	540	extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
3c4ab2aa	541	struct nfsd4_compound_state , struct nfsd4_exchange_id );
1d1bc8f2	542	extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst , struct nfsd4_compound_state , struct nfsd4_bind_conn_to_session *);
3c4ab2aa	543	extern __be32 nfsd4_create_session(struct svc_rqst *,
069b6ad4 AA	544	struct nfsd4_compound_state *,
	545	struct nfsd4_create_session *);
	546	extern __be32 nfsd4_sequence(struct svc_rqst *,
	547	struct nfsd4_compound_state *,
	548	struct nfsd4_sequence *);
	549	extern __be32 nfsd4_destroy_session(struct svc_rqst *,
	550	struct nfsd4_compound_state *,
	551	struct nfsd4_destroy_session *);
4dc6ec00	552	__be32 nfsd4_reclaim_complete(struct svc_rqst , struct nfsd4_compound_state , struct nfsd4_reclaim_complete *);
6668958f AA	553	extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
6668958f AA	554	struct nfsd4_open *open);
b37ad28b	555	extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
1da177e4	556	struct svc_fh current_fh, struct nfsd4_open open);
b37ad28b	557	extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
a4f1706a	558	struct nfsd4_compound_state , struct nfsd4_open_confirm oc);
ca364317 BF	559	extern __be32 nfsd4_close(struct svc_rqst *rqstp,
ca364317 BF	560	struct nfsd4_compound_state *,
a4f1706a	561	struct nfsd4_close *close);
b37ad28b	562	extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
a4f1706a BF	563	struct nfsd4_compound_state *,
a4f1706a BF	564	struct nfsd4_open_downgrade *od);
ca364317	565	extern __be32 nfsd4_lock(struct svc_rqst rqstp, struct nfsd4_compound_state ,
a4f1706a	566	struct nfsd4_lock *lock);
ca364317 BF	567	extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
ca364317 BF	568	struct nfsd4_compound_state *,
1da177e4	569	struct nfsd4_lockt *lockt);
ca364317 BF	570	extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
ca364317 BF	571	struct nfsd4_compound_state *,
a4f1706a	572	struct nfsd4_locku *locku);
b37ad28b	573	extern __be32
1da177e4	574	nfsd4_release_lockowner(struct svc_rqst *rqstp,
b591480b	575	struct nfsd4_compound_state *,
1da177e4	576	struct nfsd4_release_lockowner *rlockowner);
3e98abff	577	extern int nfsd4_release_compoundargs(void rq, __be32 p, void *resp);
b37ad28b	578	extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
ca364317	579	struct nfsd4_compound_state , struct nfsd4_delegreturn dr);
b591480b BF	580	extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
b591480b BF	581	struct nfsd4_compound_state , clientid_t clid);
17456804 BS	582	extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
17456804 BS	583	struct nfsd4_compound_state , struct nfsd4_test_stateid test_stateid);
e1ca12df BS	584	extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
e1ca12df BS	585	struct nfsd4_compound_state , struct nfsd4_free_stateid free_stateid);
1da177e4 LT	586	#endif
	587
	588	/*
	589	* Local variables:
	590	* c-basic-offset: 8
	591	* End:
	592	*/