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Commit 4aea24b2 authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd4: embed xdr_stream in nfsd4_compoundres 



This is a mechanical transformation with no change in behavior.

Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent e372ba60

fs/nfsd/nfs4proc.c

+6 −6
Original line number Diff line number Diff line
@@ -1270,13 +1270,13 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, 
	u32		plen = 0;

	__be32		status;



	resp->xbuf = &rqstp->rq_res;

	resp->p = rqstp->rq_res.head[0].iov_base +

	resp->xdr.buf = &rqstp->rq_res;

	resp->xdr.p = rqstp->rq_res.head[0].iov_base +

						rqstp->rq_res.head[0].iov_len;

	resp->tagp = resp->p;

	resp->tagp = resp->xdr.p;

	/* reserve space for: taglen, tag, and opcnt */

	resp->p += 2 + XDR_QUADLEN(args->taglen);

	resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;

	resp->xdr.p += 2 + XDR_QUADLEN(args->taglen);

	resp->xdr.end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;

	resp->taglen = args->taglen;

	resp->tag = args->tag;

	resp->opcnt = 0;
@@ -1328,7 +1328,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, 
		 * failed response to the next operation.  If we don't

		 * have enough room, fail with ERR_RESOURCE.

		 */

		slack_bytes = (char *)resp->end - (char *)resp->p;

		slack_bytes = (char *)resp->xdr.end - (char *)resp->xdr.p;

		if (slack_bytes < COMPOUND_SLACK_SPACE

				+ COMPOUND_ERR_SLACK_SPACE) {

			BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);

fs/nfsd/nfs4state.c

+4 −4
Original line number Diff line number Diff line
@@ -1573,10 +1573,10 @@ nfsd4_store_cache_entry(struct nfsd4_compoundres *resp) 
		slot->sl_datalen = 0;

		return;

	}

	slot->sl_datalen = (char *)resp->p - (char *)resp->cstate.datap;

	slot->sl_datalen = (char *)resp->xdr.p - (char *)resp->cstate.datap;

	base = (char *)resp->cstate.datap -

					(char *)resp->xbuf->head[0].iov_base;

	if (read_bytes_from_xdr_buf(resp->xbuf, base, slot->sl_data,

					(char *)resp->xdr.buf->head[0].iov_base;

	if (read_bytes_from_xdr_buf(resp->xdr.buf, base, slot->sl_data,

				    slot->sl_datalen))

		WARN("%s: sessions DRC could not cache compound\n", __func__);

	return;
@@ -1630,7 +1630,7 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, 
	memcpy(resp->cstate.datap, slot->sl_data, slot->sl_datalen);



	resp->opcnt = slot->sl_opcnt;

	resp->p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen);

	resp->xdr.p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen);

	status = slot->sl_status;



	return status;

fs/nfsd/nfs4xdr.c

+35 −32
Original line number Diff line number Diff line
@@ -1747,10 +1747,10 @@ static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) 
}



#define RESERVE_SPACE(nbytes)	do {				\

	p = resp->p;						\

	BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end);		\

	p = resp->xdr.p;						\

	BUG_ON(p + XDR_QUADLEN(nbytes) > resp->xdr.end);		\

} while (0)

#define ADJUST_ARGS()		resp->p = p

#define ADJUST_ARGS()		resp->xdr.p = p



/* Encode as an array of strings the string given with components

 * separated @sep, escaped with esc_enter and esc_exit.
@@ -2751,9 +2751,9 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 
	if (nfserr)

		return nfserr;



	buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);

	buflen = resp->xdr.end - resp->xdr.p - (COMPOUND_ERR_SLACK_SPACE >> 2);

	nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,

				    &resp->p, buflen, getattr->ga_bmval,

				    &resp->xdr.p, buflen, getattr->ga_bmval,

				    resp->rqstp, 0);

	return nfserr;

}
@@ -2953,7 +2953,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, 


	if (nfserr)

		return nfserr;

	if (resp->xbuf->page_len)

	if (resp->xdr.buf->page_len)

		return nfserr_resource;



	RESERVE_SPACE(8); /* eof flag and byte count */
@@ -2991,18 +2991,18 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, 
	WRITE32(eof);

	WRITE32(maxcount);

	ADJUST_ARGS();

	resp->xbuf->head[0].iov_len = (char*)p

					- (char*)resp->xbuf->head[0].iov_base;

	resp->xbuf->page_len = maxcount;

	resp->xdr.buf->head[0].iov_len = (char *)p

				- (char *)resp->xdr.buf->head[0].iov_base;

	resp->xdr.buf->page_len = maxcount;



	/* Use rest of head for padding and remaining ops: */

	resp->xbuf->tail[0].iov_base = p;

	resp->xbuf->tail[0].iov_len = 0;

	resp->xdr.buf->tail[0].iov_base = p;

	resp->xdr.buf->tail[0].iov_len = 0;

	if (maxcount&3) {

		RESERVE_SPACE(4);

		WRITE32(0);

		resp->xbuf->tail[0].iov_base += maxcount&3;

		resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);

		resp->xdr.buf->tail[0].iov_base += maxcount&3;

		resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3);

		ADJUST_ARGS();

	}

	return 0;
@@ -3017,7 +3017,7 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd 


	if (nfserr)

		return nfserr;

	if (resp->xbuf->page_len)

	if (resp->xdr.buf->page_len)

		return nfserr_resource;

	if (!*resp->rqstp->rq_next_page)

		return nfserr_resource;
@@ -3041,18 +3041,18 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd 


	WRITE32(maxcount);

	ADJUST_ARGS();

	resp->xbuf->head[0].iov_len = (char*)p

				- (char*)resp->xbuf->head[0].iov_base;

	resp->xbuf->page_len = maxcount;

	resp->xdr.buf->head[0].iov_len = (char *)p

				- (char *)resp->xdr.buf->head[0].iov_base;

	resp->xdr.buf->page_len = maxcount;



	/* Use rest of head for padding and remaining ops: */

	resp->xbuf->tail[0].iov_base = p;

	resp->xbuf->tail[0].iov_len = 0;

	resp->xdr.buf->tail[0].iov_base = p;

	resp->xdr.buf->tail[0].iov_len = 0;

	if (maxcount&3) {

		RESERVE_SPACE(4);

		WRITE32(0);

		resp->xbuf->tail[0].iov_base += maxcount&3;

		resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);

		resp->xdr.buf->tail[0].iov_base += maxcount&3;

		resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3);

		ADJUST_ARGS();

	}

	return 0;
@@ -3068,7 +3068,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 


	if (nfserr)

		return nfserr;

	if (resp->xbuf->page_len)

	if (resp->xdr.buf->page_len)

		return nfserr_resource;

	if (!*resp->rqstp->rq_next_page)

		return nfserr_resource;
@@ -3080,7 +3080,8 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 
	WRITE32(0);

	WRITE32(0);

	ADJUST_ARGS();

	resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;

	resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p)

				- (char *)resp->xdr.buf->head[0].iov_base;

	tailbase = p;



	maxcount = PAGE_SIZE;
@@ -3121,14 +3122,15 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 
	p = readdir->buffer;

	*p++ = 0;	/* no more entries */

	*p++ = htonl(readdir->common.err == nfserr_eof);

	resp->xbuf->page_len = ((char*)p) -

	resp->xdr.buf->page_len = ((char *)p) -

		(char*)page_address(*(resp->rqstp->rq_next_page-1));



	/* Use rest of head for padding and remaining ops: */

	resp->xbuf->tail[0].iov_base = tailbase;

	resp->xbuf->tail[0].iov_len = 0;

	resp->p = resp->xbuf->tail[0].iov_base;

	resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;

	resp->xdr.buf->tail[0].iov_base = tailbase;

	resp->xdr.buf->tail[0].iov_len = 0;

	resp->xdr.p = resp->xdr.buf->tail[0].iov_base;

	resp->xdr.end = resp->xdr.p +

			(PAGE_SIZE - resp->xdr.buf->head[0].iov_len)/4;



	return 0;

err_no_verf:
@@ -3587,10 +3589,10 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) 
	session = resp->cstate.session;



	if (xb->page_len == 0) {

		length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;

		length = (char *)resp->xdr.p - (char *)xb->head[0].iov_base + pad;

	} else {

		if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)

			tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;

			tlen = (char *)resp->xdr.p - (char *)xb->tail[0].iov_base;



		length = xb->head[0].iov_len + xb->page_len + tlen + pad;

	}
@@ -3629,7 +3631,8 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 
		op->status = nfsd4_check_resp_size(resp, 0);

	if (so) {

		so->so_replay.rp_status = op->status;

		so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1);

		so->so_replay.rp_buflen = (char *)resp->xdr.p

						- (char *)(statp+1);

		memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen);

	}

status:
@@ -3731,7 +3734,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo 
		iov = &rqstp->rq_res.tail[0];

	else

		iov = &rqstp->rq_res.head[0];

	iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;

	iov->iov_len = ((char *)resp->xdr.p) - (char *)iov->iov_base;

	BUG_ON(iov->iov_len > PAGE_SIZE);

	if (nfsd4_has_session(cs)) {

		struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);

fs/nfsd/xdr4.h

+1 −3
Original line number Diff line number Diff line
@@ -506,9 +506,7 @@ struct nfsd4_compoundargs { 


struct nfsd4_compoundres {

	/* scratch variables for XDR encode */

	__be32 *			p;

	__be32 *			end;

	struct xdr_buf *		xbuf;

	struct xdr_stream		xdr;

	struct svc_rqst *		rqstp;



	u32				taglen;