Commit Graph
4 Commits
Author SHA1 Message Date
enricobuehler 5219107177 chore(unsafe): the workspace adopts the drivers' unsafe discipline
`packaging/windows/drivers/*` has run `deny(unsafe_op_in_unsafe_fn)` +
`deny(clippy::undocumented_unsafe_blocks)` for a while, with `forbid(unsafe_code)`
on the modules that need no unsafe at all. The main workspace had no lint config
whatsoever, so nothing stopped a clean crate from quietly growing an `unsafe`, and
nothing distinguished the handful of genuinely-unsafe lines inside a 600-line
`unsafe fn` from the safe ones surrounding them.

Three things, all mechanical:

* `#![forbid(unsafe_code)]` on the eight crates that already contain zero unsafe
  (`pf-driver-proto`, `pf-host-config`, `pf-paths`, the three clean clients, both
  tools). These were clean by accident, not by contract; now they are clean by
  contract.

* `unsafe_op_in_unsafe_fn = "warn"` workspace-wide. `unsafe fn` states a contract
  the CALLER must uphold — it was never meant to switch off checking for the whole
  body. Measured fallout is 300 sites on Linux, and they are concentrated: six
  files carry all of them, while `punktfunk-core`, `pf-frame`, `pf-clipboard` and
  `pf-vdisplay` are already at zero. `warn` (not `deny`) so the build stays green
  while those six are worked down; it flips to `deny` once they are. This is also
  the Rust 2024 default, so it pays off the edition migration early.

* `proc::current_uid()` replaces eight `unsafe { libc::getuid() }` blocks. Each
  site had copied out the same SAFETY note verbatim, which is the tell: `getuid()`
  is parameterless, always succeeds and touches no memory, so there is no contract
  for a caller to uphold and no reason for the unsafe to be visible eight times.
  One `unsafe` behind a safe wrapper, none at the call sites.

Verified: `pf-vdisplay` builds clean on Linux (Nobara) at zero E0133; the
macOS-buildable crates build clean locally. No behaviour change.
2026-07-28 21:31:41 +02:00
enricobuehler 7c82a72ecd fix(zerocopy): find the NVIDIA render node instead of assuming renderD128
The EGL importer — the head of the CUDA/NVENC zero-copy path — opened
`/dev/dri/renderD128` and hoped. On a single-GPU host that is the
NVIDIA node and it always worked. On a hybrid laptop the iGPU is bound
first, so renderD128 is Intel: we built a GBM device on Mesa, asked it
for a pbuffer-capable OpenGL config, got none (Mesa's GBM platform
advertises only window-capable ones — gbm_surface is the point of that
platform there), and reported

    zerocopy worker init failed: no EGL config for OpenGL

on a machine whose NVIDIA EGL stack was demonstrably fine, naming
neither the device nor the reason. `PUNKTFUNK_RENDER_NODE` was no
escape either: this path never read it.

Pick the node by what it is — the first `/dev/dri/renderD*` whose
sysfs PCI vendor is 0x10de, the same identification the crate's Vulkan
bridge already uses for its physical device. A local scan rather than a
`pf_gpu` dependency, because this crate is a leaf whose worker is its
own process, and `pf_gpu::linux_render_node` answers a different
question anyway: it follows the operator's GPU *preference*, which may
legitimately name the iGPU. What is needed here is not which GPU to use
but where CUDA is. `PUNKTFUNK_ZEROCOPY_RENDER_NODE` overrides, and no
NVIDIA node found keeps the historical guess — sysfs may just not be
mounted, and the CUDA context is what properly fails on a host with no
NVIDIA at all.

Then stop the config query being able to fail this way: retry without
the surface-type constraint, which is honest because we never create an
EGLSurface — `eglMakeCurrent` runs surfaceless. And name the node in
every error and in the ready line, so the next hybrid host diagnoses
itself.
2026-07-25 15:13:11 +02:00
enricobuehlerandClaude Fable 5 22b352c1da chore(release): bump workspace version to 0.13.0
apple / swift (push) Successful in 1m19s
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ci / web (push) Successful in 53s
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docker / build-push (ci, ci/rust-ci.Dockerfile, punktfunk-rust-ci) (push) Successful in 10s
apple / screenshots (push) Successful in 6m27s
windows-host / package (push) Successful in 15m6s
arch / build-publish (push) Successful in 10m50s
docker / build-push (docs-site, docs-site/Dockerfile, punktfunk-docs) (push) Successful in 1m1s
windows-msix / package (arm64, C:\Users\Public\ffmpeg-arm64, --no-default-features, aarch64-pc-windows-msvc, C:\t-a64) (push) Successful in 3m58s
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ci / rust (push) Successful in 19m37s
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rpm / build-publish (43, bazzite, punktfunk-fedora-rpm) (push) Successful in 14m26s
windows / build (x86_64-pc-windows-msvc) (push) Successful in 5m51s
The eight W6 leaf crates hardcoded 0.12.0 instead of inheriting the
workspace version — switched to version.workspace = true so the next bump
is one line again.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-17 16:32:35 +02:00
enricobuehlerandClaude Opus 4.8 85bc5b9a3f refactor(host/W6.2): extract the Linux zero-copy GPU plumbing into the pf-zerocopy leaf crate
linux/zerocopy/* (CUDA context/buffers + EGL/Vulkan dmabuf import + the isolated
import worker) and linux/dmabuf_fence.rs move wholesale into crates/pf-zerocopy,
so the coming pf-frame vocabulary crate (FramePayload::Cuda owns a DeviceBuffer)
and the pf-encode/pf-capture subsystem crates can reach the GPU plumbing without
the host orchestrator in between (plan §W6). Content stays Linux-only; the crate
compiles to an empty lib elsewhere, so dependents carry a plain dependency.

drm_fourcc deliberately does NOT move: it consumes the frame vocabulary
(PixelFormat), which sits ABOVE pf-zerocopy — it lives with capture for now and
moves into pf-frame next. cuda's ffi re-export bumps pub(crate)->pub (the raw
CUdeviceptr vocabulary is consumed across the crate boundary by the encode
backends). A crate::zerocopy shim module keeps every existing path valid until
capture/encode themselves move out.

Verified: Linux clippy -D warnings (pf-zerocopy --all-targets + host
nvenc,vulkan-encode,pyrowave --all-targets) + 17/17 pf-zerocopy tests + 321/321
host tests; Windows clippy nvenc,amf-qsv --all-targets Finished exit 0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-17 09:41:15 +02:00