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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-10-22 15:18:40 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-03-22 10:18:52 -0400 |
| commit | 9a9c8923b3efd593d0e6a405efef9d58c6e6804b (patch) | |
| tree | 7d16118e290ead548d407443fd85c7ea6c52eaba /fs | |
| parent | 70f8e839859a994e324e1d18889f8319bbd5bff9 (diff) | |
| download | linux-9a9c8923b3efd593d0e6a405efef9d58c6e6804b.tar.bz2 | |
NFSD: Update the NFSv3 READLINK3res encoder to use struct xdr_stream
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs3proc.c | 5 | ||||
| -rw-r--r-- | fs/nfsd/nfs3xdr.c | 34 | ||||
| -rw-r--r-- | fs/nfsd/xdr3.h | 1 |
3 files changed, 22 insertions, 18 deletions
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index 49b018afc6ea..e55a1d14ede2 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -126,14 +126,15 @@ nfsd3_proc_readlink(struct svc_rqst *rqstp) { struct nfsd_fhandle *argp = rqstp->rq_argp; struct nfsd3_readlinkres *resp = rqstp->rq_resp; - char *buffer = page_address(*(rqstp->rq_next_page++)); dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); /* Read the symlink. */ fh_copy(&resp->fh, &argp->fh); resp->len = NFS3_MAXPATHLEN; - resp->status = nfsd_readlink(rqstp, &resp->fh, buffer, &resp->len); + resp->pages = rqstp->rq_next_page++; + resp->status = nfsd_readlink(rqstp, &resp->fh, + page_address(*resp->pages), &resp->len); return rpc_success; } diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index 29b923a497f4..352691c3e246 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -977,26 +977,28 @@ nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p) int nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p) { + struct xdr_stream *xdr = &rqstp->rq_res_stream; struct nfsd3_readlinkres *resp = rqstp->rq_resp; struct kvec *head = rqstp->rq_res.head; - *p++ = resp->status; - p = encode_post_op_attr(rqstp, p, &resp->fh); - if (resp->status == 0) { - *p++ = htonl(resp->len); - xdr_ressize_check(rqstp, p); - rqstp->rq_res.page_len = resp->len; - if (resp->len & 3) { - /* need to pad the tail */ - rqstp->rq_res.tail[0].iov_base = p; - *p = 0; - rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); - } - if (svc_encode_result_payload(rqstp, head->iov_len, resp->len)) + if (!svcxdr_encode_nfsstat3(xdr, resp->status)) + return 0; + switch (resp->status) { + case nfs_ok: + if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) return 0; - return 1; - } else - return xdr_ressize_check(rqstp, p); + if (xdr_stream_encode_u32(xdr, resp->len) < 0) + return 0; + xdr_write_pages(xdr, resp->pages, 0, resp->len); + if (svc_encode_result_payload(rqstp, head->iov_len, resp->len) < 0) + return 0; + break; + default: + if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) + return 0; + } + + return 1; } /* READ */ diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h index 7db4ee17aa20..1d633c5d5fa2 100644 --- a/fs/nfsd/xdr3.h +++ b/fs/nfsd/xdr3.h @@ -137,6 +137,7 @@ struct nfsd3_readlinkres { __be32 status; struct svc_fh fh; __u32 len; + struct page **pages; }; struct nfsd3_readres { |