_dxg_probe.nx

_dxg_probe.nx -- SOVEREIGN-GPU foundation RECON probe (no libvulkan/libcuda/libdxcore, no libc): raw openat("/dev/dxg") + raw ioctl on the real dxgkrnl thunk for the RTX 5080. This is a SCOPE/RECON probe, NOT the gate. It proves three things from a REAL run: (A) /dev/dxg opens with a raw openat() -> prints the fd (>=0 = real device handle). (B) a TAMPER ioctl with a non-dxg magic returns a real device errno (NOT 0) -> the fd is the real device, not a no-op; a bogus code does NOT falsely succeed. (C) a magic-0x47 LX_DX* ioctl returns the kernel's REAL response code (0 or -errno), distinguishable from the tamper -> the 0x47 ioctl path reaches dxgkrnl. The dxgkrnl uapi (WSL2-Linux-Kernel drivers/hv/dxgkrnl, include/uapi/misc/d3dkmthk-style): ioctl numbers are _IOWR(0x47, nr, struct ...) -> 32-bit code = dir(2 bits, _IOWR=3=0xC0000000) | size(14 bits, <<16) | magic(8 bits 0x47, <<8) | nr(8 bits). LX_DXENUMADAPTERS3 nr is in the LX_DX* enum; this probe issues a representative 0x47 code and a stub arg to read the kernel's response (a real call needs the exact struct -- see the gate plan). license_tier: ORIGINAL