nfsd4: allow fh_verify caller to skip pseudoflavor checks

Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfsfh.c

@@ -344,7 +344,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
 	 * which clients virtually always use auth_sys for,
 	 * even while using RPCSEC_GSS for NFS.
 	 */
-	if (access & NFSD_MAY_LOCK)
+	if (access & NFSD_MAY_LOCK || access & NFSD_MAY_BYPASS_GSS)
 		goto skip_pseudoflavor_check;
 	/*
 	 * Clients may expect to be able to use auth_sys during mount,

fs/nfsd/vfs.h

@@ -24,6 +24,7 @@
 #define NFSD_MAY_LOCAL_ACCESS	128 /* IRIX doing local access check on device special file*/
 #define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
 #define NFSD_MAY_NOT_BREAK_LEASE 512
+#define NFSD_MAY_BYPASS_GSS	1024
 
 #define NFSD_MAY_CREATE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE)
 #define NFSD_MAY_REMOVE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)