On Thu, Aug 15, 2019 at 05:15:57PM +0200, Michal Privoznik wrote: > Hold on to your hat, this is going to be a wild ride. As nearly > nothing in glic, nor open() is a real function. Just look into > bits/fcntl2.h and you'll see that open() is actually a thin > wrapper that calls either __open_alias() or __open_2(). Now, > before 801ebb5edb6 the open() done in > virPCIDeviceConfigOpenInternal() had a constant oflags (we were > opening the pci config with O_RDWR). And since we were not > passing any mode nor O_CREAT the wrapper decided to call > __open_alias() which was open() provided by our mock. So far so > good. But after the referenced commit, the oflags is no longer > compile time constant and therefore the wrapper calls __open_2() > which we don't mock and thus the real __open_2() from glibc was > called and thus we did try to open real path from host's /sys. > This of course fails with variety of errors. > > Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx> > --- Reviewed-by: Erik Skultety <eskultet@xxxxxxxxxx> -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
