nfs4xdr.c

Linux Kernel 2.6.9 for OMAP1710

	xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
			 readdir->pgbase, readdir->count);

	return 0;
}

static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
{
	struct rpc_auth *auth = req->rq_task->tk_auth;
	unsigned int replen;
	uint32_t *p;

	RESERVE_SPACE(4);
	WRITE32(OP_READLINK);

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

static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
{
	uint32_t *p;

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

	return 0;
}

static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
{
	uint32_t *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);

	return 0;
}

static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
{
	uint32_t *p;

	RESERVE_SPACE(12);
	WRITE32(OP_RENEW);
	WRITE64(client_stateid->cl_clientid);

	return 0;
}

static int
encode_savefh(struct xdr_stream *xdr)
{
	uint32_t *p;

	RESERVE_SPACE(4);
	WRITE32(OP_SAVEFH);

	return 0;
}

static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
{
	int status;
	uint32_t *p;
	
        RESERVE_SPACE(4+sizeof(arg->stateid.data));
        WRITE32(OP_SETATTR);
	WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));

        if ((status = encode_attrs(xdr, arg->iap, server)))
		return status;

        return 0;
}

static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
{
	uint32_t *p;

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

	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);

	return 0;
}

static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
{
        uint32_t *p;

        RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
        WRITE32(OP_SETCLIENTID_CONFIRM);
        WRITE64(client_state->cl_clientid);
        WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));

        return 0;
}

static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
	uint32_t *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);

	return 0;
}

static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
	uint32_t *p;

	RESERVE_SPACE(20);

	WRITE32(OP_DELEGRETURN);
	WRITEMEM(stateid->data, sizeof(stateid->data));
	return 0;

}
/*
 * END OF "GENERIC" ENCODE ROUTINES.
 */

/*
 * Encode an ACCESS request
 */
static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->fh)) == 0)
		status = encode_access(&xdr, args->access);
	return status;
}

/*
 * Encode LOOKUP request
 */
static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 4,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
		goto out;
	if ((status = encode_lookup(&xdr, args->name)) != 0)
		goto out;
	if ((status = encode_getfh(&xdr)) != 0)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
out:
	return status;
}

/*
 * Encode LOOKUP_ROOT request
 */
static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 3,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putrootfh(&xdr)) != 0)
		goto out;
	if ((status = encode_getfh(&xdr)) == 0)
		status = encode_getfattr(&xdr, args->bitmask);
out:
	return status;
}

/*
 * Encode REMOVE request
 */
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->fh)) == 0)
		status = encode_remove(&xdr, args->name);
	return status;
}

/*
 * Encode RENAME request
 */
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 4,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
		goto out;
	if ((status = encode_savefh(&xdr)) != 0)
		goto out;
	if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
		goto out;
	status = encode_rename(&xdr, args->old_name, args->new_name);
out:
	return status;
}

/*
 * Encode LINK request
 */
static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 4,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->fh)) != 0)
		goto out;
	if ((status = encode_savefh(&xdr)) != 0)
		goto out;
	if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
		goto out;
	status = encode_link(&xdr, args->name);
out:
	return status;
}

/*
 * Encode CREATE request
 */
static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 4,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
		goto out;
	if ((status = encode_create(&xdr, args)) != 0)
		goto out;
	if ((status = encode_getfh(&xdr)) != 0)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
out:
	return status;
}

/*
 * Encode SYMLINK request
 */
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *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, uint32_t *p, const struct nfs4_getattr_arg *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 2,
	};
	int status;

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

/*
 * Encode a CLOSE request
 */
static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
{
        struct xdr_stream xdr;
        struct compound_hdr hdr = {
                .nops   = 2,
        };
        int status;

        xdr_init_encode(&xdr, &req->rq_snd_buf, p);
        encode_compound_hdr(&xdr, &hdr);
        status = encode_putfh(&xdr, args->fh);
        if(status)
                goto out;
        status = encode_close(&xdr, args);
out:
        return status;
}

/*
 * Encode an OPEN request
 */
static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 4,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if (status)
		goto out;
	status = encode_open(&xdr, args);
	if (status)
		goto out;
	status = encode_getfh(&xdr);
	if (status)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
out:
	return status;
}

/*
 * Encode an OPEN_CONFIRM request
 */
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if(status)
		goto out;
	status = encode_open_confirm(&xdr, args);
out:
	return status;
}

/*
 * Encode an OPEN request with no attributes.
 */
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if (status)
		goto out;
	status = encode_open(&xdr, args);
out:
	return status;
}

/*
 * Encode an OPEN_DOWNGRADE request
 */
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops	= 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if (status)
		goto out;
	status = encode_open_downgrade(&xdr, args);
out:
	return status;
}

/*
 * Encode a LOCK request
 */
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if(status)
		goto out;
	status = encode_lock(&xdr, args);
out:
	return status;
}

/*
 * Encode a LOCKT request
 */
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if(status)
		goto out;
	status = encode_lockt(&xdr, args);
out:
	return status;
}

/*
 * Encode a LOCKU request
 */
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops   = 2,
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
	if(status)
		goto out;
	status = encode_locku(&xdr, args);
out:
	return status;
}

/*