1 files changed, 51 insertions, 4 deletions

diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 74cf1f4de174..3eb724ec9566 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -364,10 +364,30 @@ __fh_verify(struct svc_rqst *rqstp,
 	if (error)
 		goto out;
 
+	/*
+	 * If rqstp is NULL, this is a LOCALIO request which will only
+	 * ever use a filehandle/credential pair for which access has
+	 * been affirmed (by ACCESS or OPEN NFS requests) over the
+	 * wire.  Skip both the xprtsec policy and the security flavor
+	 * checks.
+	 */
+	if (!rqstp)
+		goto check_permissions;
+
 	if ((access & NFSD_MAY_NLM) && (exp->ex_flags & NFSEXP_NOAUTHNLM))
 		/* NLM is allowed to fully bypass authentication */
 		goto out;
 
+	/*
+	 * NLM is allowed to bypass the xprtsec policy check because lockd
+	 * doesn't support xprtsec.
+	 */
+	if (!(access & NFSD_MAY_NLM)) {
+		error = check_xprtsec_policy(exp, rqstp);
+		if (error)
+			goto out;
+	}
+
 	if (access & NFSD_MAY_BYPASS_GSS)
 		may_bypass_gss = true;
 	/*
@@ -379,13 +399,13 @@ __fh_verify(struct svc_rqst *rqstp,
 			&& exp->ex_path.dentry == dentry)
 		may_bypass_gss = true;
 
-	error = check_nfsd_access(exp, rqstp, may_bypass_gss);
+	error = check_security_flavor(exp, rqstp, may_bypass_gss);
 	if (error)
 		goto out;
-	/* During LOCALIO call to fh_verify will be called with a NULL rqstp */
-	if (rqstp)
-		svc_xprt_set_valid(rqstp->rq_xprt);
 
+	svc_xprt_set_valid(rqstp->rq_xprt);
+
+check_permissions:
 	/* Finally, check access permissions. */
 	error = nfsd_permission(cred, exp, dentry, access);
 out:
@@ -663,6 +683,33 @@ out_negative:
 }
 
 /**
+ * fh_getattr - Retrieve attributes on a local file
+ * @fhp: File handle of target file
+ * @stat: Caller-supplied kstat buffer to be filled in
+ *
+ * Returns nfs_ok on success, otherwise an NFS status code is
+ * returned.
+ */
+__be32 fh_getattr(const struct svc_fh *fhp, struct kstat *stat)
+{
+	struct path p = {
+		.mnt		= fhp->fh_export->ex_path.mnt,
+		.dentry		= fhp->fh_dentry,
+	};
+	struct inode *inode = d_inode(p.dentry);
+	u32 request_mask = STATX_BASIC_STATS;
+
+	if (S_ISREG(inode->i_mode))
+		request_mask |= (STATX_DIOALIGN | STATX_DIO_READ_ALIGN);
+
+	if (fhp->fh_maxsize == NFS4_FHSIZE)
+		request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE);
+
+	return nfserrno(vfs_getattr(&p, stat, request_mask,
+				    AT_STATX_SYNC_AS_STAT));
+}
+
+/**
  * fh_fill_pre_attrs - Fill in pre-op attributes
  * @fhp: file handle to be updated
  *