Drive::read is now single-shot. Phase 1/2/3 retries + scsi::reset+reopen
removed (~80 lines). recovery=true bumps timeout to 30s; recovery=false
stays at 1.5s. On any failure returns Err(DiscRead) immediately — caller
(Disc::patch outer loop, DiscStream batch halver) handles retries.
Inline reset+reopen WAS the wedge primitive on the LG BU40N. Per prior
post-mortem, every USB/SCSI reset path tested fails to recover the
wedged Initio bridge — the inline retry was pure cost.
SgIoTransport::reset (Linux) trimmed to kernel SG_IO state flush +
ALLOW MEDIUM REMOVAL. SG_SCSI_RESET ioctl + STOP/START UNIT escalation
removed. macOS reset removed (no-op). scsi::reset() top-level family
removed (no callers).
EventKind::BytesRead { bytes, total } now actually emitted from
DiscStream::fill_extents after each successful sector read. Was
declared in 0.13.0, never fired. Drives autorip per-device progress
in direct mode.
EventKind::Retry / SectorRecovered no longer emitted (variants kept
for forward compat). SpeedChange still emitted via Drive::set_speed
public path.
Tests: new tests/integration_progress_and_halt.rs (5 tests). 233 unit
tests + 5 integration green.
USB/SCSI recovery escalation in drive_has_disc (0.13.1-0.13.3) tested
on LG BU40N USB BD-RE: USBDEVFS_RESET, authorized toggle, driver
unbind/rebind, SCSI host rescan — all succeed at the USB transport
layer but the drive firmware below the bridge stays locked. Only
physical unplug-replug clears it. Rolled back so consumers can
surface the real failure to the user.
New: list_drives falls back to sysfs-cached vendor/model/rev from
/sys/class/scsi_generic/sgN/device/ when live INQUIRY returns empty,
so wedged drives still show their identity in UIs.
Removed: scsi::usb_reset, usb_reset_with_timeout, per-platform
usb_reset methods, recover_then_probe, is_wedge_signature. Breadcrumb
comment in scsi/linux.rs::drive_has_disc points at v0.13.3 tag for
the full implementation if future hardware needs it back.
Linux/macOS/Windows pass-through symmetric; 233 tests passing.
0.13.2's is_wedge_signature gated on opcode=SCSI_INQUIRY (0x12), but
drive_has_disc issues TEST UNIT READY (0x00). Production wedge errors
(E4000: 0x00/0xff/0x00) never matched → SCSI reset + USB reset
escalation never fired.
Drop the opcode gate. Status byte 0xFF is synthesised by our own
execute() path on poll() timeout — it's the ground-truth wedge
marker for any opcode.
Linux-only; macOS/Windows use sense-key-based wedge detection.
Architectural cleanup. autorip + freemkv CLI were reimplementing drive
discovery (sysfs walking, type-5 filtering, sg-path construction) and
calling SCSI reset primitives directly. All of that hardware-aware code
moves into libfreemkv with two cheap public probes:
- DriveInfo + list_drives() — multi-OS enumeration (Linux/macOS/Windows)
with peripheral-type-5 filtering and INQUIRY identity. Cheap.
- drive_has_disc(path) — single TUR with internal wedge recovery
escalation (SCSI reset → USB reset → retry) hidden from callers.
USB-layer reset (USBDEVFS_RESET / IOUSBDeviceInterface::ResetDevice /
storport's combined reset) wired across all three platforms.
Visibility tightening — scsi::reset, scsi::usb_reset, and the timeout
constants are now pub(crate). Compile-time guarantee that no consumer
crate can issue SCSI commands directly.
233 lib tests pass; clippy clean.
Production incident: autorip's poll loop called scsi::reset() on a
wedged BU40N USB drive. The Linux SG_SCSI_RESET ioctl blocked
indefinitely (kernel SCSI subsystem waiting for a bus-wedged device to
ack a reset that will never come). Caller's poll loop hung for 60+
seconds before manual intervention.
scsi::reset() now spawns a detached worker for the platform-specific
reset and bounds the caller's wait via mpsc::recv_timeout. Default
30 s (DEFAULT_RESET_TIMEOUT_SECS); reset_with_timeout(device, dur)
exposes the bound for callers that want a different value. Returns
DeviceResetFailed on timeout. Worker thread keeps running until the
kernel eventually unblocks — leaks one OS thread per hard wedge, but
the daemon stays responsive instead of hanging forever.
Follow-up flagged for 0.13.2: USB-attached drives wedge at the USB
Mass Storage layer below SCSI; SG_SCSI_RESET doesn't help. A
scsi::usb_reset(path) using USBDEVFS_RESET is the proper escalation.
Audit pass against the CLAUDE.md "no English text in library code" rule.
Found 9 call sites that violated the contract by stuffing English into
io::Error::new(kind, "…") or by abusing Error::DeviceNotFound { path }
as a free-form description field. Each is now a typed Error variant.
New variants and codes: ScsiInterfaceUnavailable (E1004), DeviceLocked
(E1005), IoKitPluginFailed (E1006), UnsupportedPlatform (E2003),
PlatformNotImplemented (E2004), MapfileInvalid (E6011), DiscUrlNotDirect
(E9009).
labels::apply() previously pushed Commentary/Descriptive/Score/IME and
" (Secondary)" English literals into AudioStream.label, leaking into
MKV titles + autorip UI. AudioStream now exposes structured `purpose:
LabelPurpose`, SubtitleStream `qualifier: LabelQualifier`. Callers
translate to localized text. label keeps codec-formatting only.
API hygiene: 11 mux/* modules dropped from `pub` to `pub(crate)` —
their *types* are still re-exported from lib.rs, but the modules were
leaking low-level EBML/TS/network primitives. Stream trait gets a real
rustdoc explaining read-vs-write split. lib.rs grouped re-exports into
documented sections. ScanOptions::with_keydb() removed (one-method-per-
action rule); use struct literal.
Dead-code sweep: removed lookahead.rs (orphan, never declared as mod),
tsreader.rs (TsDemuxReader unused), ebml::{write_int,read_vint,SEEK_*},
ts::{scan_first/last_pts,scan_duration,SCAN_HEAD/TAIL_SIZE,take/set_
remainder}, MkvMuxer codec_private_slots/filled fields and
fill_codec_private method (deferred-codecPrivate path never used since
the v0.10 PES rewrite). cargo clippy --all-targets -D warnings clean.
Tests: new error::tests for variant codes + Display "no English" guard +
io::ErrorKind mapping. 233 lib tests, all green (was 230).
Breaking: ScanOptions::with_keydb removed; mux/* modules pub(crate);
AudioStream and SubtitleStream gained required fields; UnsupportedDrive
{ product_revision: "Renesas not yet implemented" } no longer produced
(use PlatformNotImplemented).
Replace read_with_binary_search + 3×5s light recovery with an adaptive
sizer that shrinks on failure (halve, 3-aligned ≥6) and probes back up
after 100 MiB (51,200 sectors) of clean reads. Descent cost is paid
once per bad region, not once per bad sector.
Emit BatchSizeChanged { new_size, reason } on shrink and probe-up.
Remove BinarySearch event — no longer produced.
Side fix: scsi/macos.rs one-liner for manual_c_str_literals clippy
lint that surfaced on a newer toolchain.
Fix trailing sectors dropped at extent boundaries when sector_count % 3 != 0.
Add verify_title stop support via progress callback returning bool.
Add O_CLOEXEC on all SCSI fd opens to prevent leak to child processes.
Fix SCSI sense descriptor format detection (0x72/0x73 vs 0x70/0x71).
Replace blocking ioctl(SG_IO) with the sg driver's async interface.
Commands are submitted via write(), waited on via poll() with a hard
wall-clock timeout, and completed via read(). If poll() times out,
the fd is abandoned and a fresh one opened — the kernel can no longer
hold us hostage during USB error recovery.
- write() submits command, returns immediately
- poll() enforces exact timeout (EINTR-safe with deadline tracking)
- read() retrieves result + copies data to caller's buffer
- On timeout: old fd closed in background thread, new fd opened
- No SG_FLAG_DIRECT_IO — kernel buffers for safe timeout abandonment
- Store device_path for fd reopen after timeout
- Drop guards fd=-1 (abandoned fd)
- Remove unused pes_buf field from M2tsStream and unused TS_PACKET/BD_TS_PACKET constants
- Replace match-with-single-pattern with if let (3 instances in drive/mod.rs)
- Replace match-can-be-? with ? operator for scsi::open call
- Add type aliases PesSetup and MkvHeaderResult to reduce type complexity
- Collapse identical if/else branches in tsmux.rs build_pes_header
- Use RangeInclusive::contains instead of manual range checks
- Make WriteSeek trait pub (was pub(crate) but leaked through pub fn)
- Remove empty line after doc comment in disc.rs
- Fix doc list item indentation in scsi/linux.rs (12 instances)
- Rename DriveSession → Drive across entire codebase
- find_drives() returns Vec<Drive>, find_drive() returns Option<Drive>
- resolve_device() now pub(crate) — internal only
- StreamUrl is now a typed enum (Disc, Mkv, M2ts, Iso, Network, Stdio, Null)
with scheme() and path_str() accessors, replacing struct of Strings
- Add lock_tray() / unlock_tray() for safe disc access during rips
- Improve reset() with eject cycle that clears LibreDrive stuck state
- Add Send bounds to ScsiTransport and PlatformDriver traits
- DiscOptions uses PathBuf instead of String for device/keydb paths
- Update doc example to use new Drive API
Architecture:
- Each BD-J format in own file: paramount.rs, criterion.rs, pixelogic.rs, ctrm.rs
- Standard interface: detect() → bool, parse() → Option<Vec<StreamLabel>>
- PARSERS array in mod.rs — drop in a new parser with one line
- Shared vocab.rs for BD spec codec names only (MLP→TrueHD, AC3→Dolby Digital)
- All other label data passes through raw from disc — no guessing
Changes:
- New: paramount.rs (playlists.xml — Paramount/onQ format)
- Renamed: bluray_project.rs → pixelogic.rs
- Renamed: stream_properties.rs → criterion.rs
- Merged: language_streams.rs + menu_base.rs → ctrm.rs
- Removed: jar module (superseded by labels), dead apply functions
- Added: DriveSession::eject() with PREVENT ALLOW MEDIUM REMOVAL
- Added: DiscRegion enum (Free/BluRay/Dvd)
- Fixed: capture sector ranges now include all files (only skip STREAM/)
- Renamed: StreamLabel.region → variant (not a BD spec field)
matthew
Matt Jackson