nfs4xdr.c

		encode_nfs4_verifier(xdr, &arg->u.verifier);
	}
}

static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
	__be32 *p;

	RESERVE_SPACE(4);
	switch (arg->open_flags & O_CREAT) {
	case 0:
		WRITE32(NFS4_OPEN_NOCREATE);
		break;
	default:
		BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
		WRITE32(NFS4_OPEN_CREATE);
		encode_createmode(xdr, arg);
	}
}

static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
{
	__be32 *p;

	RESERVE_SPACE(4);
	switch (delegation_type) {
	case 0:
		WRITE32(NFS4_OPEN_DELEGATE_NONE);
		break;
	case FMODE_READ:
		WRITE32(NFS4_OPEN_DELEGATE_READ);
		break;
	case FMODE_WRITE|FMODE_READ:
		WRITE32(NFS4_OPEN_DELEGATE_WRITE);
		break;
	default:
		BUG();
	}
}

static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(NFS4_OPEN_CLAIM_NULL);
	encode_string(xdr, name->len, name->name);
}

static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
	encode_delegation_type(xdr, type);
}

static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
	WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
	WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
	encode_string(xdr, name->len, name->name);
}

static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
{
	encode_openhdr(xdr, arg);
	encode_opentype(xdr, arg);
	switch (arg->claim) {
	case NFS4_OPEN_CLAIM_NULL:
		encode_claim_null(xdr, arg->name);
		break;
	case NFS4_OPEN_CLAIM_PREVIOUS:
		encode_claim_previous(xdr, arg->u.delegation_type);
		break;
	case NFS4_OPEN_CLAIM_DELEGATE_CUR:
		encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
		break;
	default:
		BUG();
	}
	hdr->nops++;
}

static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
	WRITE32(OP_OPEN_CONFIRM);
	WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
	WRITE32(arg->seqid->sequence->counter);
	hdr->nops++;
}

static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
	WRITE32(OP_OPEN_DOWNGRADE);
	WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
	WRITE32(arg->seqid->sequence->counter);
	encode_share_access(xdr, arg->fmode);
	hdr->nops++;
}

static void
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
{
	int len = fh->size;
	__be32 *p;

	RESERVE_SPACE(8 + len);
	WRITE32(OP_PUTFH);
	WRITE32(len);
	WRITEMEM(fh->data, len);
	hdr->nops++;
}

static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_PUTROOTFH);
	hdr->nops++;
}

static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
{
	nfs4_stateid stateid;
	__be32 *p;

	RESERVE_SPACE(NFS4_STATEID_SIZE);
	if (ctx->state != NULL) {
		nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
		WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
	} else
		WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
}

static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_READ);

	encode_stateid(xdr, args->context);

	RESERVE_SPACE(12);
	WRITE64(args->offset);
	WRITE32(args->count);
	hdr->nops++;
}

static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
{
	uint32_t attrs[2] = {
		FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
		FATTR4_WORD1_MOUNTED_ON_FILEID,
	};
	__be32 *p;

	RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
	WRITE32(OP_READDIR);
	WRITE64(readdir->cookie);
	WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
	WRITE32(readdir->count >> 1);  /* We're not doing readdirplus */
	WRITE32(readdir->count);
	WRITE32(2);
	/* Switch to mounted_on_fileid if the server supports it */
	if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
		attrs[0] &= ~FATTR4_WORD0_FILEID;
	else
		attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
	WRITE32(attrs[0] & readdir->bitmask[0]);
	WRITE32(attrs[1] & readdir->bitmask[1]);
	hdr->nops++;
	dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
			__func__,
			(unsigned long long)readdir->cookie,
			((u32 *)readdir->verifier.data)[0],
			((u32 *)readdir->verifier.data)[1],
			attrs[0] & readdir->bitmask[0],
			attrs[1] & readdir->bitmask[1]);
}

static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_READLINK);
	hdr->nops++;
}

static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(8 + name->len);
	WRITE32(OP_REMOVE);
	WRITE32(name->len);
	WRITEMEM(name->name, name->len);
	hdr->nops++;
}

static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(8 + oldname->len);
	WRITE32(OP_RENAME);
	WRITE32(oldname->len);
	WRITEMEM(oldname->name, oldname->len);

	RESERVE_SPACE(4 + newname->len);
	WRITE32(newname->len);
	WRITEMEM(newname->name, newname->len);
	hdr->nops++;
}

static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(12);
	WRITE32(OP_RENEW);
	WRITE64(client_stateid->cl_clientid);
	hdr->nops++;
}

static void
encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_RESTOREFH);
	hdr->nops++;
}

static int
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
	WRITE32(OP_SETATTR);
	WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
	RESERVE_SPACE(2*4);
	WRITE32(1);
	WRITE32(FATTR4_WORD0_ACL);
	if (arg->acl_len % 4)
		return -EINVAL;
	RESERVE_SPACE(4);
	WRITE32(arg->acl_len);
	xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
	hdr->nops++;
	return 0;
}

static void
encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_SAVEFH);
	hdr->nops++;
}

static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
	WRITE32(OP_SETATTR);
	WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
	hdr->nops++;
	encode_attrs(xdr, arg->iap, server);
}

static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
	WRITE32(OP_SETCLIENTID);
	WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);

	encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
	RESERVE_SPACE(4);
	WRITE32(setclientid->sc_prog);
	encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
	encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
	RESERVE_SPACE(4);
	WRITE32(setclientid->sc_cb_ident);
	hdr->nops++;
}

static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
	WRITE32(OP_SETCLIENTID_CONFIRM);
	WRITE64(client_state->cl_clientid);
	WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
	hdr->nops++;
}

static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4);
	WRITE32(OP_WRITE);

	encode_stateid(xdr, args->context);

	RESERVE_SPACE(16);
	WRITE64(args->offset);
	WRITE32(args->stable);
	WRITE32(args->count);

	xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
	hdr->nops++;
}

static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
{
	__be32 *p;

	RESERVE_SPACE(4+NFS4_STATEID_SIZE);

	WRITE32(OP_DELEGRETURN);
	WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
	hdr->nops++;
}
/*
 * END OF "GENERIC" ENCODE ROUTINES.
 */

/*
 * Encode an ACCESS request
 */
static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_access(&xdr, args->access, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode LOOKUP request
 */
static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->dir_fh, &hdr);
	encode_lookup(&xdr, args->name, &hdr);
	encode_getfh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode LOOKUP_ROOT request
 */
static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putrootfh(&xdr, &hdr);
	encode_getfh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode REMOVE request
 */
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_remove(&xdr, &args->name, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode RENAME request
 */
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->old_dir, &hdr);
	encode_savefh(&xdr, &hdr);
	encode_putfh(&xdr, args->new_dir, &hdr);
	encode_rename(&xdr, args->old_name, args->new_name, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_restorefh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode LINK request
 */
static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_savefh(&xdr, &hdr);
	encode_putfh(&xdr, args->dir_fh, &hdr);
	encode_link(&xdr, args->name, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_restorefh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode CREATE request
 */
static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->dir_fh, &hdr);
	encode_savefh(&xdr, &hdr);
	encode_create(&xdr, args, &hdr);
	encode_getfh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_restorefh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode SYMLINK request
 */
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
{
	return nfs4_xdr_enc_create(req, p, args);
}

/*
 * Encode GETATTR request
 */
static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a CLOSE request
 */
static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_close(&xdr, args, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode an OPEN request
 */
static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_savefh(&xdr, &hdr);
	encode_open(&xdr, args, &hdr);
	encode_getfh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_restorefh(&xdr, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode an OPEN_CONFIRM request
 */
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_open_confirm(&xdr, args, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode an OPEN request with no attributes.
 */
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_open(&xdr, args, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode an OPEN_DOWNGRADE request
 */
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_open_downgrade(&xdr, args, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a LOCK request
 */
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_lock(&xdr, args, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a LOCKT request
 */
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_lockt(&xdr, args, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a LOCKU request
 */
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_locku(&xdr, args, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a READLINK request
 */
static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	unsigned int replen;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_readlink(&xdr, args, req, &hdr);

	/* set up reply kvec
	 *    toplevel_status + taglen + rescount + OP_PUTFH + status
	 *      + OP_READLINK + status + string length = 8
	 */
	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readlink_sz) << 2;
	xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
			args->pgbase, args->pglen);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a READDIR request
 */
static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	int replen;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_readdir(&xdr, args, req, &hdr);

	/* set up reply kvec
	 *    toplevel_status + taglen + rescount + OP_PUTFH + status
	 *      + OP_READDIR + status + verifer(2)  = 9
	 */
	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readdir_sz) << 2;
	xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
			 args->pgbase, args->count);
	dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
			__func__, replen, args->pages,
			args->pgbase, args->count);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a READ request
 */
static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
{
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};
	int replen;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_read(&xdr, args, &hdr);

	/* set up reply kvec
	 *    toplevel status + taglen=0 + rescount + OP_PUTFH + status
	 *       + OP_READ + status + eof + datalen = 9
	 */
	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
	xdr_inline_pages(&req->rq_rcv_buf, replen,
			 args->pages, args->pgbase, args->count);
	req->rq_rcv_buf.flags |= XDRBUF_READ;
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode an SETATTR request
 */
static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_setattr(&xdr, args, args->server, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a GETACL request
 */
static int
nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
		struct nfs_getaclargs *args)
{
	struct xdr_stream xdr;
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	struct compound_hdr hdr = {
		.nops   = 0,
	};
	int replen;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);

	/* set up reply buffer: */
	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
	xdr_inline_pages(&req->rq_rcv_buf, replen,
		args->acl_pages, args->acl_pgbase, args->acl_len);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode a WRITE request
 */
static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_write(&xdr, args, &hdr);
	req->rq_snd_buf.flags |= XDRBUF_WRITE;
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 *  a COMMIT request
 */
static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_commit(&xdr, args, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * FSINFO request
 */
static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_fsinfo(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * a PATHCONF request
 */
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
			   &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * a STATFS request
 */
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fh, &hdr);
	encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
			   args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * GETATTR_BITMAP request
 */
static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
				    struct nfs4_server_caps_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fhandle, &hdr);
	encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
			   FATTR4_WORD0_LINK_SUPPORT|
			   FATTR4_WORD0_SYMLINK_SUPPORT|
			   FATTR4_WORD0_ACLSUPPORT, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * a RENEW request
 */
static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_renew(&xdr, clp, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * a SETCLIENTID request
 */
static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_setclientid(&xdr, sc, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * a SETCLIENTID_CONFIRM request
 */
static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 0,
	};
	const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_setclientid_confirm(&xdr, clp, &hdr);
	encode_putrootfh(&xdr, &hdr);
	encode_fsinfo(&xdr, lease_bitmap, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * DELEGRETURN request
 */
static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 0,
	};

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	encode_putfh(&xdr, args->fhandle, &hdr);
	encode_delegreturn(&xdr, args->stateid, &hdr);
	encode_getfattr(&xdr, args->bitmask, &hdr);
	encode_nops(&hdr);
	return 0;
}

/*
 * Encode FS_LOCATIONS request