nfsd4: embed xdr_stream in nfsd4_compoundres
This is a mechanical transformation with no change in behavior. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -1270,13 +1270,13 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
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u32 plen = 0;
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__be32 status;
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resp->xbuf = &rqstp->rq_res;
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resp->p = rqstp->rq_res.head[0].iov_base +
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resp->xdr.buf = &rqstp->rq_res;
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resp->xdr.p = rqstp->rq_res.head[0].iov_base +
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rqstp->rq_res.head[0].iov_len;
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resp->tagp = resp->p;
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resp->tagp = resp->xdr.p;
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/* reserve space for: taglen, tag, and opcnt */
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resp->p += 2 + XDR_QUADLEN(args->taglen);
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resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
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resp->xdr.p += 2 + XDR_QUADLEN(args->taglen);
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resp->xdr.end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
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resp->taglen = args->taglen;
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resp->tag = args->tag;
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resp->opcnt = 0;
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@ -1328,7 +1328,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
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* failed response to the next operation. If we don't
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* have enough room, fail with ERR_RESOURCE.
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*/
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slack_bytes = (char *)resp->end - (char *)resp->p;
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slack_bytes = (char *)resp->xdr.end - (char *)resp->xdr.p;
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if (slack_bytes < COMPOUND_SLACK_SPACE
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+ COMPOUND_ERR_SLACK_SPACE) {
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BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
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@ -1573,10 +1573,10 @@ nfsd4_store_cache_entry(struct nfsd4_compoundres *resp)
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slot->sl_datalen = 0;
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return;
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}
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slot->sl_datalen = (char *)resp->p - (char *)resp->cstate.datap;
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slot->sl_datalen = (char *)resp->xdr.p - (char *)resp->cstate.datap;
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base = (char *)resp->cstate.datap -
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(char *)resp->xbuf->head[0].iov_base;
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if (read_bytes_from_xdr_buf(resp->xbuf, base, slot->sl_data,
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(char *)resp->xdr.buf->head[0].iov_base;
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if (read_bytes_from_xdr_buf(resp->xdr.buf, base, slot->sl_data,
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slot->sl_datalen))
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WARN("%s: sessions DRC could not cache compound\n", __func__);
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return;
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@ -1630,7 +1630,7 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
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memcpy(resp->cstate.datap, slot->sl_data, slot->sl_datalen);
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resp->opcnt = slot->sl_opcnt;
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resp->p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen);
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resp->xdr.p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen);
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status = slot->sl_status;
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return status;
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@ -1747,10 +1747,10 @@ static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
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}
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#define RESERVE_SPACE(nbytes) do { \
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p = resp->p; \
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BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
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p = resp->xdr.p; \
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BUG_ON(p + XDR_QUADLEN(nbytes) > resp->xdr.end); \
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} while (0)
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#define ADJUST_ARGS() resp->p = p
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#define ADJUST_ARGS() resp->xdr.p = p
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/* Encode as an array of strings the string given with components
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* separated @sep, escaped with esc_enter and esc_exit.
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@ -2751,9 +2751,9 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
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if (nfserr)
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return nfserr;
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buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
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buflen = resp->xdr.end - resp->xdr.p - (COMPOUND_ERR_SLACK_SPACE >> 2);
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nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
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&resp->p, buflen, getattr->ga_bmval,
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&resp->xdr.p, buflen, getattr->ga_bmval,
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resp->rqstp, 0);
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return nfserr;
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}
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@ -2953,7 +2953,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
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if (nfserr)
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return nfserr;
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if (resp->xbuf->page_len)
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if (resp->xdr.buf->page_len)
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return nfserr_resource;
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RESERVE_SPACE(8); /* eof flag and byte count */
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@ -2991,18 +2991,18 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
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WRITE32(eof);
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WRITE32(maxcount);
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ADJUST_ARGS();
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resp->xbuf->head[0].iov_len = (char*)p
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- (char*)resp->xbuf->head[0].iov_base;
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resp->xbuf->page_len = maxcount;
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resp->xdr.buf->head[0].iov_len = (char *)p
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- (char *)resp->xdr.buf->head[0].iov_base;
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resp->xdr.buf->page_len = maxcount;
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/* Use rest of head for padding and remaining ops: */
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resp->xbuf->tail[0].iov_base = p;
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resp->xbuf->tail[0].iov_len = 0;
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resp->xdr.buf->tail[0].iov_base = p;
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resp->xdr.buf->tail[0].iov_len = 0;
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if (maxcount&3) {
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RESERVE_SPACE(4);
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WRITE32(0);
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resp->xbuf->tail[0].iov_base += maxcount&3;
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resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
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resp->xdr.buf->tail[0].iov_base += maxcount&3;
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resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3);
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ADJUST_ARGS();
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}
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return 0;
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@ -3017,7 +3017,7 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd
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if (nfserr)
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return nfserr;
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if (resp->xbuf->page_len)
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if (resp->xdr.buf->page_len)
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return nfserr_resource;
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if (!*resp->rqstp->rq_next_page)
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return nfserr_resource;
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@ -3041,18 +3041,18 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd
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WRITE32(maxcount);
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ADJUST_ARGS();
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resp->xbuf->head[0].iov_len = (char*)p
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- (char*)resp->xbuf->head[0].iov_base;
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resp->xbuf->page_len = maxcount;
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resp->xdr.buf->head[0].iov_len = (char *)p
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- (char *)resp->xdr.buf->head[0].iov_base;
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resp->xdr.buf->page_len = maxcount;
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/* Use rest of head for padding and remaining ops: */
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resp->xbuf->tail[0].iov_base = p;
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resp->xbuf->tail[0].iov_len = 0;
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resp->xdr.buf->tail[0].iov_base = p;
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resp->xdr.buf->tail[0].iov_len = 0;
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if (maxcount&3) {
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RESERVE_SPACE(4);
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WRITE32(0);
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resp->xbuf->tail[0].iov_base += maxcount&3;
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resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
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resp->xdr.buf->tail[0].iov_base += maxcount&3;
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resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3);
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ADJUST_ARGS();
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}
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return 0;
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@ -3068,7 +3068,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
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if (nfserr)
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return nfserr;
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if (resp->xbuf->page_len)
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if (resp->xdr.buf->page_len)
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return nfserr_resource;
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if (!*resp->rqstp->rq_next_page)
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return nfserr_resource;
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@ -3080,7 +3080,8 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
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WRITE32(0);
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WRITE32(0);
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ADJUST_ARGS();
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resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
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resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p)
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- (char *)resp->xdr.buf->head[0].iov_base;
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tailbase = p;
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maxcount = PAGE_SIZE;
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@ -3121,14 +3122,15 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
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p = readdir->buffer;
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*p++ = 0; /* no more entries */
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*p++ = htonl(readdir->common.err == nfserr_eof);
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resp->xbuf->page_len = ((char*)p) -
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resp->xdr.buf->page_len = ((char *)p) -
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(char*)page_address(*(resp->rqstp->rq_next_page-1));
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/* Use rest of head for padding and remaining ops: */
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resp->xbuf->tail[0].iov_base = tailbase;
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resp->xbuf->tail[0].iov_len = 0;
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resp->p = resp->xbuf->tail[0].iov_base;
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resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
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resp->xdr.buf->tail[0].iov_base = tailbase;
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resp->xdr.buf->tail[0].iov_len = 0;
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resp->xdr.p = resp->xdr.buf->tail[0].iov_base;
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resp->xdr.end = resp->xdr.p +
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(PAGE_SIZE - resp->xdr.buf->head[0].iov_len)/4;
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return 0;
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err_no_verf:
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@ -3587,10 +3589,10 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
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session = resp->cstate.session;
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if (xb->page_len == 0) {
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length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
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length = (char *)resp->xdr.p - (char *)xb->head[0].iov_base + pad;
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} else {
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if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
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tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
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tlen = (char *)resp->xdr.p - (char *)xb->tail[0].iov_base;
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length = xb->head[0].iov_len + xb->page_len + tlen + pad;
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}
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@ -3629,7 +3631,8 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
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op->status = nfsd4_check_resp_size(resp, 0);
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if (so) {
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so->so_replay.rp_status = op->status;
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so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1);
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so->so_replay.rp_buflen = (char *)resp->xdr.p
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- (char *)(statp+1);
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memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen);
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}
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status:
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@ -3731,7 +3734,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
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iov = &rqstp->rq_res.tail[0];
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else
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iov = &rqstp->rq_res.head[0];
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iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
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iov->iov_len = ((char *)resp->xdr.p) - (char *)iov->iov_base;
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BUG_ON(iov->iov_len > PAGE_SIZE);
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if (nfsd4_has_session(cs)) {
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struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
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@ -506,9 +506,7 @@ struct nfsd4_compoundargs {
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struct nfsd4_compoundres {
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/* scratch variables for XDR encode */
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__be32 * p;
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__be32 * end;
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struct xdr_buf * xbuf;
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struct xdr_stream xdr;
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struct svc_rqst * rqstp;
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u32 taglen;
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