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Re: Wine MinGW system libraries

Le sam. 11 sept. 2021 à 06:00, Paul Wise <pabs@debian.org> a écrit :
> Disclaimer: I know precisely zero of the details here nor
> if the PE loader can support any of the below features.
> On Fri, 2021-09-10 at 09:23 +0000, Bastien ROUCARIES wrote:
> > The problem is that windows apps particularly games try to check if
> > mapped ram exec pages are from dll from disk and not modified in
> > memory.
> The fake dlopen could presumably be provided by an on-disk DLL?
> The PE loader would just load the fake dlopen DLL first, like
> glibc does when you set the LD_PRELOAD environment variable.
> > You propose:
> I'm not proposing any on-disk symlinks, renaming DLLs or any other
> changes to any PE DLLs, just loading into memory like dlmopen.
> The solution I'm thinking of looks something like this:
> src:libpng -> libpng16-16:$winarch -> /usr/lib/$wintriplet/libpng16.dll
> (requires Debian to support cross-only, partial and Windows arch types)
> PE loader sets up in-memory Wine namespace.
> PE loader loads into Wine namespace: /usr/lib/$windowstriplet/wine/fake-dlopen.dll
> PE loader loads Wine dependencies into Wine namespace.
> Some of the Wine dependencies call the Windows equivalent of dlopen,
> which resolves to the fake dlopen equivalent within the namespace,
> which calls the Windows equivalent of dlmopen("Wine", dll), which makes
> the PE loader load those libraries into the Wine namespace.
> PE loader finishes loading Wine dependencies and proceeds loading the
> PE file and its dependencies into the default namespace.

Seems that python do what you describe:
Windows already implemented the name space called activation context.
Need only windows XP or better but wine could offer the API

> Windows apps check mapped RAM pages and they show up correctly.
> The main issue would be that apps could check they run in Wine.
> OTOH the PE loader could also just hide the pages somehow?

> --
> bye,
> pabs
> https://wiki.debian.org/PaulWise

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