Christoph Rohland wrote:
> > Btw, even for MAP_ANON|MAP_SHARED, the filename reported via
> > "cat /proc/pid/maps" will show up as /dev/zero (I _think_), did
> > you want to change that?
>
> No, the I think the current behaviour is fine since mmap /dev/zero and
> mmmap MAP_ANON are semantically the same. So they can just show up the
> same.
I think in both cases, for MAP_SHARED, it should show a shmfs file
name if possible (i.e. if it's mounted).
>From /proc/pid/maps, it's possible to open the shared mapped file whose
name is listed and see what the process sees. But that breaks for
/dev/zero as a very special case. Using the shmfs name would remove
that special case.
-- Jamie
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