[PATCH v1 17/61] NFSD: Replace READ* macros in nfsd4_decode_time()

[Chuck Lever <chuck.lever@xxxxxxxxxx>]

Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
 fs/nfsd/nfs4xdr.c |   25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 6bb6ffa676b7..69ff666a5695 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -262,17 +262,22 @@ static __be32 nfsd4_decode_component4(struct nfsd4_compoundargs *argp,
 }
 
 static __be32
-nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec64 *tv)
+nfsd4_decode_nfstime4(struct nfsd4_compoundargs *argp, struct timespec64 *tv)
 {
-	DECODE_HEAD;
+	__be32 *p;
 
-	READ_BUF(12);
+	p = xdr_inline_decode(argp->xdr, sizeof(__be64) + sizeof(__be32));
+	if (!p)
+		goto xdr_error;
 	p = xdr_decode_hyper(p, &tv->tv_sec);
 	tv->tv_nsec = be32_to_cpup(p++);
 	if (tv->tv_nsec >= (u32)1000000000)
-		return nfserr_inval;
-
-	DECODE_TAIL;
+		goto inval_arg;
+	return nfs_ok;
+xdr_error:
+	return nfserr_bad_xdr;
+inval_arg:
+	return nfserr_inval;
 }
 
 static __be32
@@ -413,7 +418,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
 		switch (dummy32) {
 		case NFS4_SET_TO_CLIENT_TIME:
 			len += 12;
-			status = nfsd4_decode_time(argp, &iattr->ia_atime);
+			status = nfsd4_decode_nfstime4(argp, &iattr->ia_atime);
 			if (status)
 				return status;
 			iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
@@ -432,7 +437,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
 		switch (dummy32) {
 		case NFS4_SET_TO_CLIENT_TIME:
 			len += 12;
-			status = nfsd4_decode_time(argp, &iattr->ia_mtime);
+			status = nfsd4_decode_nfstime4(argp, &iattr->ia_mtime);
 			if (status)
 				return status;
 			iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
@@ -1417,7 +1422,7 @@ nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
 			goto xdr_error;
 
 		/* nii_date */
-		status = nfsd4_decode_time(argp, &exid->nii_time);
+		status = nfsd4_decode_nfstime4(argp, &exid->nii_time);
 		if (status)
 			goto xdr_error;
 	}
@@ -1649,7 +1654,7 @@ nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp,
 	READ_BUF(4);
 	timechange = be32_to_cpup(p++);
 	if (timechange) {
-		status = nfsd4_decode_time(argp, &lcp->lc_mtime);
+		status = nfsd4_decode_nfstime4(argp, &lcp->lc_mtime);
 		if (status)
 			return status;
 	} else {