nfsd: distinguish functions of NFSD_MAY_* flags

Most of the NFSD_MAY_* flags actually request permissions, but over the
years we've accreted a few that modify the behavior of the permission or
open code in other ways.

Distinguish the two cases a little more.  In particular, allow the
shortcut at the start of nfsd_permission to ignore the
non-permission-requesting bits.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 9a370a5e36b7..1036913e6e86 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -17,6 +17,9 @@
 #define NFSD_MAY_SATTR          8
 #define NFSD_MAY_TRUNC          16
 #define NFSD_MAY_LOCK           32
+#define NFSD_MAY_MASK           63
+
+/* extra hints to permission and open routines: */
 #define NFSD_MAY_OWNER_OVERRIDE 64
 #define NFSD_MAY_LOCAL_ACCESS   128 /* IRIX doing local access check on device special file*/
 #define NFSD_MAY_BYPASS_GSS_ON_ROOT 256