From: Chuck Lever <chuck.lever@oracle.com>
Date: Mon, 19 Oct 2020 18:15:51 +0000 (-0400)
Subject: NFSD: Update the NFSv2 READDIR argument decoder to use struct xdr_stream
X-Git-Tag: v5.15~1764^2~39
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8688361ae2edb8f7e61d926dc5000c9a44f29370;p=platform%2Fkernel%2Flinux-starfive.git

NFSD: Update the NFSv2 READDIR argument decoder to use struct xdr_stream

As an additional clean up, move code not related to XDR decoding
into readdir's .pc_func call out.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---

diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 3d72334..7b33093 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -381,15 +381,17 @@ nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
 int
 nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
 	struct nfsd_readdirargs *args = rqstp->rq_argp;
 
-	p = decode_fh(p, &args->fh);
-	if (!p)
+	if (!svcxdr_decode_fhandle(xdr, &args->fh))
+		return 0;
+	if (xdr_stream_decode_u32(xdr, &args->cookie) < 0)
+		return 0;
+	if (xdr_stream_decode_u32(xdr, &args->count) < 0)
 		return 0;
-	args->cookie = ntohl(*p++);
-	args->count  = ntohl(*p++);
 
-	return xdr_argsize_check(rqstp, p);
+	return 1;
 }
 
 /*