dxvk-native VS src

DXVK 2.0 has upstreamed the dxvk-native code, meaning the game runs using native Linux libraries but uses DX11 with DXVK. This is mostly done because the ancient OpenGL linux-native renderer was rather bad.

what works best is games supporting dxvk-native: https://github.com/Joshua-Ashton/dxvk-native

There is DXVK native which doesn't require wine.

https://github.com/Joshua-Ashton/dxvk-native

There are also Dxvk native for porting game to Linux. Which is used by valve to port it's game to Linux.(replacing togl)

I disagree, but I get the frustration. It's just that I've been playing CS:GO for almost a decade, and while I think the game is neglected by Valve in general, it's way a worse scenario on Linux. For instance, Vulkan support (via dxvk-native) was added back in December last year, and it's not been updated ever since, so you get way worse stuttering when compared to OpenGL (which is actually a DirectX 9 to OpenGL translation layer, called toGL, which has its own set of bugs and issues); Plus, you can't change screen resolution when using Vulkan. I get some occasional little stutters on Windows as well, but the whole CS:GO experience is honestly just way worse on Linux, unfortunately.

DXVK-Native and the game Perimeter. Perimeter is the one game I know of that's opensource and that uses DXVK-Native. I got it to run, but there was no support for any audio, making this pretty unexciting. This is still being worked on upstream, so maybe a DXVK-native port later and a port of perimeter will happen then...

You never mentioned that requirement, but here you go: https://github.com/Joshua-Ashton/dxvk-native

DirectX isn't an option on linux/mac anyway, it's just launch or safe mode. (Note to any SCS developers if they're lurking around here... please implement the DX pipeline into the linux build so we can use DXVK-Native, it's much faster than OGL!)

The OpenBSD project released 7.4 of their OS on 16 Oct 2023 as their 55th release 💫

Well since https://www.openbsd.org/ still says

> Only two remote holes in the default install, in a heck of a long time!

I'm assuming not, but I could always be mistaken.

> building a cat from scratch

> That would be an interesting project.

Here is the source code of the OpenBSD implementation of cat:

> https://github.com/openbsd/src/blob/master/bin/cat/cat.c

and here of the GNU coreutils implementation:

> https://github.com/coreutils/coreutils/blob/master/src/cat.c

Thus: I don't think building a cat from scratch or creating a tutorial about that topic is particularly hard (even though the HN audience would likely be interested in it). :-)

> I don't know how they define `MAX`, but I'm guessing it's a typical "a>b?a:b"

Indeed: https://github.com/openbsd/src/blob/master/sys/sys/param.h#L...

> Then `SYS_kbind` seems to be a signed int.

It's an untyped #define: https://github.com/openbsd/src/blob/master/sys/sys/syscall.h...

I believe your whole analysis is correct, that running an elf file with an openbsd.syscalls entry with .sysno > INT_MAX will allow an out-of-bounds write.

I can reproduce it. And this is the commit that causes the issue: https://github.com/openbsd/src/commit/d21788ce70be80e9c4ed0c52c149e01147c4a823

This doesn’t really change your conclusion, but I think that’s the wrong file. This is the real doas afaict: https://github.com/openbsd/src/blob/master/usr.bin/doas/doas...

Still just a tidy 1072 lines in that folder though.

I spent 5 minutes staring at your file trying to understand how on earth it does the things in the man page, but of course it doesn’t.

OpenBSD developers are making serious effort to kill off indirect syscalls, the base system is completely clean, take a look at the work Andrew Fresh did to adapt Perl. He write a complete syscall "dispatcher" or emulator for the Perl syscall function so that it calls the libc stubs.

https://github.com/openbsd/src/commit/312e26c80be876012ae979...

The ports tree is also being cleansed of syscall(2) usage, until they're all gone.

msyscall, pinsyscall, recent mandatory IBT/BTI, xonly. OpenBSD is making waves, but people aren't really seeing them yet.