The previous tokio = { features = ["full"] } pulled in tokio::signal
(including tokio::signal::unix::SignalKind::terminate). On Redox the
libc signal-handler registration path is incomplete; calling
enable_all() in main triggered a protection fault inside relibc, and
the kernel then panicked on unreachable code in
process::exit_this_context (see kernel/src/syscall/process.rs:79).
Two-part fix:
- Cargo.toml: scope tokio features to rt, rt-multi-thread, macros,
net, time, sync. This drops and , which are
unavailable on Redox anyway. The init system manages the daemon
lifecycle, so a signal handler is not needed in this daemon.
- src/main.rs: spawn_signal_handler becomes a no-op. The shutdown_tx
channel is preserved for any future internal shutdown signaling.
The SIGTERM path is removed entirely.
This unblocks Phase 2.1 by removing the kernel panic cascade: the
protection fault no longer fires, the kernel's exit_this_context
reaches the context switch cleanly, and the previous
unreachable!() panic no longer triggers.
Cross-compile error: from_bits_truncate requires u8 but
O_STAT/O_RDWR are usize. Cast with 'as u8'.
Applied to all 4 scheme wrappers: acmd, ftdi, ecmd, usbaudiod.
redbear-ecmd: scheme loop replaces stdout on Redox
(/scheme/net/usbECM_<N>), notification reader kept for
CDC link state / speed change events on both paths.
redbear-usbaudiod: scheme loop replaces stdout on Redox
(/scheme/audio/usbAudio_<N>), stdin→isoch_OUT playback
thread kept for host stdout path only.
All 4 class drivers now fully wired:
acmd → scheme event loop active on Redox ✅
ftdi → scheme event loop active on Redox ✅
ecmd → scheme event loop active on Redox ✅
usbaudiod → scheme event loop active on Redox ✅
redbear-ecmd: EcmScheme → /scheme/net/usbECM_<N> for netstack
redbear-usbaudiod: AudioScheme → /scheme/audio/usbAudio_<N> for audiod
(supports capture/playback path routing via openat path names)
All 4 class drivers now have scheme service wrappers:
redbear-acmd → /scheme/ttys/usbACM_<N>
redbear-ftdi → /scheme/ttys/usbFTDI_<N>
redbear-ecmd → /scheme/net/usbECM_<N>
redbear-usbaudiod → /scheme/audio/usbAudio_<N>
(HID+Storage already have scheme integration via ProducerHandle/DiskScheme)
Cross-referenced with Linux 7.1 tty_port_register_device() pattern.
New scheme.rs module:
- AcmScheme implements SchemeSync with Mutex-wrapped XhciEndpHandle
- openat(): root dir listing + device file open (O_RDWR)
- read(): USB bulk IN → scheme client (getty, terminal)
- write(): scheme client → USB bulk OUT
- close(): decrements open count
- fsync(): no-op
main.rs:
- #[cfg(target_os = redox)]: Socket::create() + register scheme
under /scheme/ttys/usbACM_<port_id>, process requests with
handle_scheme_mut() in event loop
- #[cfg(not(target_os = redox))]: stdout fallback for testing
This enables getty to open /scheme/ttys/usbACM_<N> as a serial
console on USB CDC ACM devices — the driver is now a proper
Redox scheme service, not just a stdout debugging tool.
Pattern replicable for redbear-ftdi (same scheme:ttys), redbear-ecmd
(scheme:net), and redbear-usbaudiod (scheme:audio).
The Redox init system connects daemon stdout to the appropriate
scheme service on spawn. No explicit scheme registration needed
in the driver — stdout/stderr are the scheme IPC endpoints.
This is the standard Redox daemon architecture:
- Input daemons (HID, storage) write to stdout → scheme:input, scheme:disk
- Output daemons (ACM, ECM, Audio) read/write stdout → scheme:ttys, scheme:net
- The init system handles pipe-to-scheme binding via .service files
Removed unused redox-scheme dependency that was added for a
Socket::accept()-based approach (accept() not available in this
version of redox-scheme). The stdout pattern is the correct,
working architecture.
usb-core spawn.rs:
- class_driver_for_usb_class() extended to cover all Red Bear class drivers:
Audio(0x01)→redbear-usbaudiod, CDC ACM(0x02/0x02)→redbear-acmd,
CDC ECM(0x02/0x06)→redbear-ecmd, HID(0x03)→usbhidd,
Mass Storage(0x08)→usbscsid, Hub(0x09)→usbhubd,
Vendor(0xFF)→redbear-ftdi
- Subclass-aware matching (Audio Control vs Streaming, CDC ACM vs ECM)
- is_trusted_usb_driver() whitelist extended with all 7 driver binaries
- Test suite updated with new assertions (11/11 pass)
redbear-usb-hotplugd:
- DRIVER_MAP extended to 11 entries with subclass-aware matching
- Recursive port scanning: scan_ports_recursive() traverses child
hub port directories (handles port1.port2.port3 paths)
- extract_port_id() parses full port paths to extract controller
name and port string for child hub ports
- Protocol-aware extra arg: Storage passes protocol byte (0x50/0x62),
all other classes pass interface number
- Skips CDC Data interfaces (0x0A) and hub interfaces (0x09) when
reading descriptors — matches Linux's interface matching logic
- Improved disconnect detection via descriptor accessibility heuristic
- Cleaner structure: find_driver(), scan_controllers(), scan_ports(),
try_read_descriptors(), main loop with connect/disconnect tracking
All 7 Red Bear USB class drivers now auto-spawning on device connect:
usbhidd, usbscsid, usbhubd, redbear-acmd, redbear-ecmd,
redbear-usbaudiod, redbear-ftdi
Add a JsonLoad struct with load_avg_1m/5m/15m fields and include it in the --json snapshot. Values are read from app.load_avg. Build, 224 tests, clippy, and fmt clean.
Cross-referenced with Linux 7.1 drivers/usb/core/hub.c port event
handling and drivers/usb/core/driver.c device-driver binding.
New daemon (216 lines) that watches USB controllers for device
attachment/detachment and auto-spawns the appropriate class driver.
Architecture:
- Polls /scheme/usb/ every 1000ms for controller directories
- For each controller, enumerates root hub ports
- Reads device descriptors (class/subclass/protocol) via XhciClientHandle
- Maps class to driver binary: HID(0x03)→usbhidd, Storage(0x08)→usbscsid,
Hub(0x09)→usbhubd
- Spawns driver with <scheme> <port> <protocol> arguments
- Tracks spawned Child processes in HashMap<port_path, TrackedDevice>
- Detects disconnection (descriptor read fails) → kills driver + removes
from tracking
- Detects driver exit (try_wait) → removes from tracking
- Skips hub interfaces (usbhubd handles its own children)
Config:
- Added to redbear-mini.toml (inherited by redbear-full)
- Auto-started via 02_usb_hotplug.service (oneshot_async, after base.target
and pcid-spawner)
Driver map supports: HID (0x03), Mass Storage (0x08 with BOT protocol),
Hub (0x09). Additional class drivers extendable via DRIVER_MAP constant.
Mirror the local process_filter_input buffer into App so render_keybar can display it. While filtering, the keybar shows "Filter: <buffer> (N matches) Enter:apply Esc:clear ↑↓:select" in a warm style instead of the normal hints. Build, 224 tests, clippy, and fmt clean.
Replace the generic kill-dialog footer with an explicit confirmation line: "Send SIGTERM to PID 1234 (sshd)? Enter: send Esc: cancel ↑↓: select". Extracts the signal name from the existing signal labels. Build, 224 tests, clippy, and fmt clean.
Add refresh_ms to SessionState (0 = not set, use config/default). Load it into App::poll_ms, give it priority over config when initializing the event-loop poll interval, and save it back in save_session(). Update all SessionState test initializers and assertions. Build, 224 tests, clippy, and fmt clean.
Extend the header load-average line to also show system uptime and total process count. Uptime uses meminfo::format_uptime; process count uses app.processes.count(). All values stay on one line to keep HEADER_LINES at 8. Build, 224 tests, clippy, and fmt clean.
Cross-referenced with Linux 7.1 sound/usb/card.c, mixer.c, pcm.c
and include/uapi/linux/usb/audio.h.
Replaces the 32-line scan-and-symlink stub with a 280-line real class driver:
Audio Control Interface (Feature Unit):
- Volume control: GET_CUR / SET_CUR via class-specific control requests
(bmRequestType 0xA1/0x21, FU_VOLUME selector, per-channel)
- Mute control: GET_CUR / SET_CUR (FU_MUTE selector)
- AudioReq helper for bidirectional class-specific control requests
Audio Streaming Interface:
- Isochronous endpoint auto-detection (attributes & 0x03 == 0x01)
- Format heuristics from max packet size (stereo 16-bit 48kHz default)
- SET_CUR SAMPLING_FREQ_CONTROL (0x0100) for sample rate
- Bidirectional isoch I/O: isoch IN → stdout (recording),
stdin → isoch OUT (playback)
Eliminates P1-D last remaining stub — all 3 scan-and-symlink stubs
(ecmd, acmd, usbaudiod) now have real class driver implementations.
Add a "Load: 0.42 0.55 0.61" line to render_header, color-coded by load versus core count (green <= 50% capacity, yellow <= 100%, red overcommitted). Bump HEADER_LINES from 7 to 8. Build, 224 tests, clippy, and fmt clean.
Add KeyBindings::char_for() and replace the 7 hardcoded Key::Char arms in main.rs (quit, cycle_governor, refresh_now, toggle_help, snapshot, benchmark_start, benchmark_stop). Esc remains a quit fallback. All other keys stay hardcoded. Build, 224 tests, clippy, and fmt clean.
Move all palette colors into Theme fields so dark/light/high-contrast/nord/gruvbox/solarized-dark are fully usable. Convert NiceEdit and AffinityEditor to regular render_dialog methods that take a theme. Update all render_* helpers to bind let theme = &app.theme and reference theme fields. All 224 tests pass; clippy and fmt clean.
Replace the 32-line symlink scanner with a real CDC ACM driver
cross-referenced with Linux 7.1 drivers/usb/class/cdc-acm.c.
Per-device design: the daemon connects to the xhci scheme, finds
the CDC ACM data interface (class 0x0A), configures bulk IN/OUT
endpoints, and handles CDC control requests.
AcmDevice struct:
- XhciClientHandle for scheme access
- bulk IN / bulk OUT via XhciEndpHandle
- LineCoding state (baud rate, parity, stop bits, data bits)
CDC control requests (per usb/cdc.h):
- SET_LINE_CODING (0x20): baud rate, parity, data/stop bits
- GET_LINE_CODING (0x21): read current line coding
- SET_CONTROL_LINE_STATE (0x22): DTR/RTS flow control
Interface detection:
- Matches control interface (class 0x02, sub 0x02)
- Matches data interface (class 0x0A)
- Configures both interfaces via ConfigureEndpointsReq
Main I/O loop:
- Polls bulk IN every 10ms
- Writes received data to stdout (Arduino serial monitor)
Cargo.toml updated with xhcid, common, and libredox deps.
Cross-reference: Linux 7.1
- drivers/usb/class/cdc-acm.c (2,186 lines)
- include/uapi/linux/usb/cdc.h: CDC control request defines
The existing W39 Tab completion already handles relative paths
(./ and ../) by joining with the active panel's base_dir. This
adds an explicit test confirming that typing './inn' in the
cmdline with base_dir set completes to './inner' (not CWD-relative).
Tests: 1407 pass (was 1406), zero warnings.
- Press F, type a number, Enter: jump cursor directly to that PID in the visible list.
- Press F, type text: filters by process name (existing) and now PID substring too.
- Press h in Process tab: toggle narrow view (PID/STATE/CPU%/MEM/COMM) for small terminals.
- Add process_narrow to App and SessionState; persist across sessions.
- Update help text and status messages to document the new keybindings.
- Fix unused super::* warning in process filter unit tests.
The C key toggle state now survives app restart via serde-backed
session.toml. Uses #[serde(default)] for backward compatibility
with existing session files.
New affinity.rs module renders a toggleable CPU grid dialog:
- Space toggles selected CPU on/off
- Arrow keys navigate the grid
- Enter applies via sched_setaffinity(2)
- Auto-closes 2s after successful apply
- Shows +N for enabled, -N for disabled CPUs
- Grid adapts to CPU count (4/8/16 columns)
Added set_affinity() to process.rs using libc::sched_setaffinity.
Added 'a' key to keybar and help text.
Press + to cycle through all 6 themes (dark, light, high-contrast,
nord, gruvbox, solarized-dark) without restarting. Theme choice
shown via flash_toast. Fixed --theme CLI to accept all 6 modes.
Help now uses ──────── SECTION ──────── dividers for Power & CPU,
Process Management, and Navigation. TOML config theme.mode lists
all 6 themes (nord, gruvbox, solarized-dark were missing).
vasilito
Sisyphus Agent