MAY_OPEN          132 fs/exec.c      	error = vfs_permission(&nd, MAY_READ | MAY_EXEC | MAY_OPEN);
MAY_OPEN          685 fs/exec.c      	err = vfs_permission(&nd, MAY_EXEC | MAY_OPEN);
MAY_OPEN         1680 fs/namei.c     	acc_mode = MAY_OPEN | ACC_MODE(flag);
MAY_OPEN         1929 fs/nfs/dir.c   					&& (mask & MAY_OPEN))