[CRIU] [PATCH] zdtm: protect random pages in maps04

[Andrew Vagin]

On Fri, Mar 29, 2013 at 11:57:48PM +0400, Pavel Emelyanov wrote:
> On 03/29/2013 08:29 PM, Andrey Vagin wrote:
> 
> We should have a test in zdtm that checks maps protections to preserve.
> Where is it?
maps00
but it doesn't touch protected pages.

and this one is a bit different. It creates many protected regions.
> 
> > Signed-off-by: Andrey Vagin <avagin at openvz.org>
> > ---
> >  test/zdtm/live/static/maps04.c | 10 ++++++++++
> >  1 file changed, 10 insertions(+)
> > 
> > diff --git a/test/zdtm/live/static/maps04.c b/test/zdtm/live/static/maps04.c
> > index 86b23e6..daf841e 100644
> > --- a/test/zdtm/live/static/maps04.c
> > +++ b/test/zdtm/live/static/maps04.c
> > @@ -21,6 +21,7 @@ int main(int argc, char ** argv)
> >  {
> >  	void *m;
> >  	uint32_t crc;
> > +	int i;
> >  
> >  	test_init(argc, argv);
> >  
> > @@ -35,9 +36,18 @@ int main(int argc, char ** argv)
> >  	crc = ~0;
> >  	datagen(m, MEM_SIZE, &crc);
> >  
> > +	for (i = 0; i < MEM_SIZE / (1<<20); i++)
> > +		if (mprotect(m + (lrand48() * PAGE_SIZE % MEM_SIZE), PAGE_SIZE, PROT_NONE)) {
> > +			err("mprotect");
> > +			return 1;
> > +		}
> > +
> >  	test_daemon();
> >  	test_waitsig();
> >  
> > +	if (mprotect(m, MEM_SIZE, PROT_READ))
> > +		err("mprotect");
> > +
> >  	crc = ~0;
> >  	if (datachk(m, MEM_SIZE, &crc))
> >  		fail("Mem corrupted");
> > 
> 
>