5.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever <chuck.lever@xxxxxxxxxx>
[ Upstream commit ecb7a085ac15a8844ebf12fca6ae51ce71ac9b3b ]
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/nfsd/nfs3xdr.c | 40 ++++++++++++++++++++++++++++++++--------
1 file changed, 32 insertions(+), 8 deletions(-)
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 859cc6c51c1a5..0191cbfc486b8 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -131,6 +131,19 @@ encode_fh(__be32 *p, struct svc_fh *fhp)
return p + XDR_QUADLEN(size);
}
+static bool
+svcxdr_encode_writeverf3(struct xdr_stream *xdr, const __be32 *verf)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, NFS3_WRITEVERFSIZE);
+ if (!p)
+ return false;
+ memcpy(p, verf, NFS3_WRITEVERFSIZE);
+
+ return true;
+}
+
static bool
svcxdr_decode_filename3(struct xdr_stream *xdr, char **name, unsigned int *len)
{
@@ -1038,17 +1051,28 @@ nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p)
int
nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_res_stream;
struct nfsd3_writeres *resp = rqstp->rq_resp;
- *p++ = resp->status;
- p = encode_wcc_data(rqstp, p, &resp->fh);
- if (resp->status == 0) {
- *p++ = htonl(resp->count);
- *p++ = htonl(resp->committed);
- *p++ = resp->verf[0];
- *p++ = resp->verf[1];
+ if (!svcxdr_encode_nfsstat3(xdr, resp->status))
+ return 0;
+ switch (resp->status) {
+ case nfs_ok:
+ if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh))
+ return 0;
+ if (xdr_stream_encode_u32(xdr, resp->count) < 0)
+ return 0;
+ if (xdr_stream_encode_u32(xdr, resp->committed) < 0)
+ return 0;
+ if (!svcxdr_encode_writeverf3(xdr, resp->verf))
+ return 0;
+ break;
+ default:
+ if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh))
+ return 0;
}
- return xdr_ressize_check(rqstp, p);
+
+ return 1;
}
/* CREATE, MKDIR, SYMLINK, MKNOD */
--
2.43.0
