nfsd4: use xdr_stream throughout compound encoding
Note this makes ADJUST_ARGS useless; we'll remove it in the following patch. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -1284,7 +1284,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
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svcxdr_init_encode(rqstp, resp);
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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->xdr.p += 2 + XDR_QUADLEN(args->taglen);
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xdr_reserve_space(&resp->xdr, 8 + args->taglen);
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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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@ -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->xdr.p; \
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BUG_ON(p + XDR_QUADLEN(nbytes) > resp->xdr.end); \
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p = xdr_reserve_space(&resp->xdr, nbytes); \
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BUG_ON(!p); \
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} while (0)
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#define ADJUST_ARGS() resp->xdr.p = p
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#define ADJUST_ARGS() WARN_ON_ONCE(p != resp->xdr.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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@ -3056,8 +3056,11 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
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read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
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&maxcount);
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if (nfserr)
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if (nfserr) {
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xdr->p -= 2;
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xdr->iov->iov_len -= 8;
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return nfserr;
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}
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eof = (read->rd_offset + maxcount >=
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read->rd_fhp->fh_dentry->d_inode->i_size);
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@ -3110,9 +3113,12 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd
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*/
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nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
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if (nfserr == nfserr_isdir)
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return nfserr_inval;
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if (nfserr)
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nfserr = nfserr_inval;
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if (nfserr) {
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xdr->p--;
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xdr->iov->iov_len -= 4;
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return nfserr;
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}
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WRITE32(maxcount);
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ADJUST_ARGS();
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@ -3213,8 +3219,9 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
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return 0;
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err_no_verf:
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p = savep;
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ADJUST_ARGS();
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xdr->p = savep;
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xdr->iov->iov_len = ((char *)resp->xdr.p)
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- (char *)resp->xdr.buf->head[0].iov_base;
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return nfserr;
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}
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