OK, I'll try with your design
El 16/10/21 a les 18:06, Sergey Bugaev ha escrit:
On Sat, Oct 16, 2021 at 6:54 PM Samuel Thibault wrote:
Indeed, since it's the region that remembers which protection was
allowed, we need a proxy there to enforce them.
Right, that's also a good point. max_proect
On Sat, Oct 16, 2021 at 6:54 PM Samuel Thibault wrote:
> Indeed, since it's the region that remembers which protection was
> allowed, we need a proxy there to enforce them.
Right, that's also a good point. max_proection can be less than 7 even
if there never was a proxy. That is, one can do
vm_m
Sergey Bugaev, le sam. 16 oct. 2021 14:27:01 +0300, a ecrit:
> On Sat, Oct 16, 2021 at 12:38 PM Joan Lledó wrote:
> > The new interface needs to know about proxies, and if one range has been
> > mapped using a proxy, it must return the proxy and not the original object,
> > which could be used t
Hello,
Andrea Monaco, le jeu. 14 oct. 2021 11:44:02 +0200, a ecrit:
> it seems that directory libdirmgt in hurd is dead. It is ignored by
> top-level Makefile, and it contains just a header file.
Indeed, I have now dropped it.
Samuel
On Sat, Oct 16, 2021 at 2:27 PM Sergey Bugaev wrote:
> I don't think it should *ever* return the original object back. I'd
> rather it always made a new proxy that internally references the
> object and caps max_protection to that of the region.
I also think there's a philosophical difference in
Hello!
On Sat, Oct 16, 2021 at 12:38 PM Joan Lledó wrote:
> The new interface needs to know about proxies, and if one range has been
> mapped using a proxy, it must return the proxy and not the original object,
> which could be used to bypass the proxy protection, that's why I needed a way
> t
From: Joan Lledó
Given a task and an address, it returns the pager used to map that
address in that task.
* include/mach/mach4.defs: new interface declaration: vm_pager
* vm/memory_object_proxy.h: add declaration for proxy hash functions
* vm/memory_object_proxy.c: implement proxy hash functions
El 12/10/21 a les 20:32, Samuel Thibault ha escrit:
> Sergey Bugaev, le mar. 12 oct. 2021 16:22:48 +0300, a ecrit:
>> So in the case of vm_map-backed pager, it should matter whether you
>> have a task port to the target task, not whether you *are* the target
>> task. If someone has a task port to a
