enricobuehler
95a08e99c3
Frame ring (pf-vdisplay) and both gamepad SHM channels move off named Global\ objects (openable by any sibling LocalService) to UNNAMED sections/events whose handles the host DuplicateHandles into the driver's verified WUDFHost with least access — frame delivery over the SYSTEM+admins-only IOCTL_SET_FRAME_CHANNEL, pads over a 32-byte named bootstrap mailbox (pid + handle value only, DoS-bounded; HID minidrivers have no control device). Driver-validated pad_index kills cross-pad redirects; v1↔v2 mixes fail closed with diagnosis logs on both sides. Sibling-LocalService denial proven empirically (design/idd-push-security.md, design/gamepad-channel-sealing.md). Driver-side raw ops now live behind pf-umdf-util (checked shm accessors, the forbid(unsafe_code) ChannelClient state machine, WDF request tokens) — the pad drivers' logic is 100% safe Rust; whole drivers workspace clippy-gated in CI. driver install --gamepad now sweeps SWD\punktfunk phantom devnodes: a re-created SwDevice REVIVES the old devnode with its previously-bound driver (never re-ranks), so an upgrade otherwise leaves the old driver serving — or, across the v1→v2 fence, a dead pad (found live on the RTX box). On-glass validated on the RTX 4090 box: frame path 7007 frames p50 2.06 ms cross-machine; DualSense + XUSB "sealed pad channel mapped"/proto=2 attach via both the test harness and a real streaming session; phantom-sweep repro. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
46 lines
2.4 KiB
Rust
46 lines
2.4 KiB
Rust
//! pf-vdisplay — the all-Rust UMDF IddCx virtual-display driver (M1 step-2 rewrite, on wdk-sys + the
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//! owned pf-driver-proto ABI). See design/windows-host-rewrite.md §14 for the full port plan.
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//!
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//! STEP 2: the IddCx driver SKELETON — DriverEntry → driver_add builds the full `IDD_CX_CLIENT_CONFIG`
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//! (14 IddCx callbacks + the PnP `EvtDeviceD0Entry`, all stubs) sized via the versioned
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//! [`size::idd_cx_client_config_size`], runs `IddCxDeviceInitConfig` → `WdfDeviceCreate` →
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//! `WdfDeviceCreateDeviceInterface`(the owned pf-vdisplay GUID) → `IddCxDeviceInitialize`, and exports
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//! `IddMinimumVersionRequired`. This links `IddCxStub` (the CI gate). The real adapter init (STEP 3),
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//! control plane + monitor/modes (STEP 4), and swap-chain/IDD-push (STEP 5-6) fill the stubs in.
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#![allow(non_snake_case, clippy::missing_safety_doc)]
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// P0 lint (audit §8): an unsafe op inside an `unsafe fn` must be in an explicit `unsafe {}` block, so the
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// fn-level `unsafe` never silently blesses the whole body, AND every `unsafe {}` must carry a `// SAFETY:`
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// proof. An IddCx display driver is inherently FFI-bound (D3D11 / IddCx DDIs / cross-process shared
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// textures), so it can't be unsafe-FREE the way the gamepad drivers now are (their logic moved onto the
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// safe `pf_umdf_util` layer); these gates make it unsafe-AUDITED instead, and stop it regressing.
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#![deny(unsafe_op_in_unsafe_fn)]
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#![deny(clippy::undocumented_unsafe_blocks)]
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#[macro_use]
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mod log;
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mod adapter;
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mod callbacks;
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mod control;
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mod direct_3d_device;
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mod edid;
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mod entry;
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mod frame_transport;
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mod monitor;
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mod swap_chain_processor;
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use wdk_sys::NTSTATUS;
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// NTSTATUS codes the driver returns (wdk-sys doesn't surface all of these as constants).
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pub(crate) const STATUS_SUCCESS: NTSTATUS = 0;
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pub(crate) const STATUS_NOT_IMPLEMENTED: NTSTATUS = 0xC000_0002u32 as NTSTATUS;
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pub(crate) const STATUS_NOT_FOUND: NTSTATUS = 0xC000_0225u32 as NTSTATUS;
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pub(crate) const STATUS_INVALID_PARAMETER: NTSTATUS = 0xC000_000Du32 as NTSTATUS;
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pub(crate) const STATUS_BUFFER_TOO_SMALL: NTSTATUS = 0xC000_0023u32 as NTSTATUS;
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/// IddCx (stub mode) requires the driver to export the minimum IddCx framework version it needs — the
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/// `#ifndef IDD_STUB` branch of `IddCxFuncEnum.h` that normally emits it is compiled out under
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/// `IDD_STUB`. `4` matches the proven `wdf-umdf` oracle.
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#[unsafe(no_mangle)]
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pub static IddMinimumVersionRequired: wdk_sys::ULONG = 4;
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