On Tue, Sep 01, 2020 at 02:57:14PM +0530, Amit Daniel Kachhap wrote: > diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c > new file mode 100644 > index 000000000000..ac311919567d > --- /dev/null > +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c > @@ -0,0 +1,374 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (C) 2020 ARM Limited > + > +#include <fcntl.h> > +#include <sched.h> > +#include <signal.h> > +#include <stdio.h> > +#include <stdlib.h> > +#include <unistd.h> > + > +#include <linux/auxvec.h> > +#include <sys/auxv.h> > +#include <sys/mman.h> > +#include <sys/prctl.h> > + > +#include <asm/hwcap.h> > + > +#include "kselftest.h" > +#include "mte_common_util.h" > +#include "mte_def.h" > + > +/* The temp file must be created in a tmpfs filesystem */ > +#ifdef ANDROID > +# define TEMPFILENAME "/storage/tmp_XXXXXX" > +#else > +# define TEMPFILENAME "/tmp/tmp_XXXXXX" > +#endif That's not guaranteed to be tmpfs (it's not on my Debian install). I think you'd have a better chance with /dev/shm/tmp_XXXXXX. -- Catalin
