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T

vasilito 45e086558e fix: boot process improvements — dependency cycle, INIT_NOTIFY, probing loop, and log spam fixes

- Fix P15-8-init-cycle-detection.patch: replace visiting+error with seen+silent-skip
  to eliminate 11 false-positive 'dependency cycle detected' errors on shared deps
- Fix P0-daemon-fix-init-notify-unwrap.patch: remove eprintln! for missing
  INIT_NOTIFY (expected for oneshot_async services, ~7 daemons affected)
- Fix driver-manager hotplug loop: add PERMANENTLY_SKIPPED static set shared
  between hotplug handler and DriverConfig::probe() to stop infinite re-probing
  of Fatal/NotSupported/deferred-exhausted device+driver pairs (e.g. ided)
- Fix driver-manager log_timeline: suppress repeated EPIPE/ENOENT errors with
  AtomicI32 dedup and AtomicBool one-shot guards for boot timeline JSON
- Add driver-manager SIGTERM handler, ACPI bus registration, --status mode,
  driver reap loop, graceful shutdown, and reduced deferred retries (30→3)

2026-05-17 12:34:02 +03:00

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RECIPES/CORE — ESSENTIAL SYSTEM COMPONENTS

Kernel, bootloader, C library, init system, and base drivers. Everything needed to boot Redox.

STRUCTURE

recipes/core/
├── kernel/          # Redox microkernel (~20-40k LoC Rust)
│   └── source/      # Kernel source (fetched from gitlab.redox-os.org)
├── bootloader/      # UEFI bootloader (x86_64-uefi, aarch64-uefi)
│   └── source/mk/   # Per-arch bootloader build rules
├── relibc/          # POSIX C library written in Rust
│   └── source/      # relibc source (headers, platform, syscalls)
├── base/            # Core userland + all drivers
│   └── source/      # Base repo (audiod, ipcd, ptyd, drivers, netstack, ramfs)
│       └── drivers/ # ALL drivers (userspace daemons)
│           ├── graphics/  # vesad, virtio-gpud, ihdgd (Intel experimental)
│           ├── net/       # e1000d, rtl8168d, rtl8139d, ixgbed
│           ├── storage/   # ided, ahcid, nvmed, usbscsid
│           ├── audio/     # ac97d, ihdad, sb16d
│           ├── usb/       # usbhidd (USB HID)
│           ├── virtio/    # virtio-blkd, virtio-netd, virtio-gpud
│           └── pci/       # pcid, pcid-spawner (PCI enumeration)
├── installer/       # redox_installer (creates filesystem images)
├── redoxfs/         # RedoxFS (default filesystem)
├── init/            # Init system (TOML-based service manager)
├── ion/             # Ion shell (default)
├── userutils/       # Core user management
├── uutils/          # Coreutils (Rust port)
└── netutils/        # Basic network utilities

WHERE TO LOOK

Task	Location
Fix kernel crash	`kernel/source/src/` — syscall handling, context switching, memory mgmt
Add a syscall	`kernel/source/src/scheme/` — scheme registration, then `libredox` binding
Fix a driver	`base/source/drivers/<driver>/src/`
Fix POSIX compat	`relibc/source/src/header/` — add missing POSIX headers/functions
Add bootloader support	`bootloader/source/mk/<arch>-unknown-uefi.mk`
Fix PCI enumeration	`base/source/drivers/pci/pcid-spawner/`
Fix display output	`base/source/drivers/graphics/` — vesad, virtio-gpud
Fix networking	`base/source/drivers/net/` + `base/source/netstack/`

KERNEL SCHEME ARCHITECTURE

Kernel provides minimal schemes: debug, event, memory, pipe, irq, time, sys, proc, serio. All other schemes are userspace daemons registering via File::create(":myscheme").

Driver access pattern:
  1. iopl() syscall → port I/O privilege
  2. Open /scheme/memory/physical → mmap hardware registers
  3. Open /scheme/irq/{num} → receive interrupts as messages
  4. Register scheme → handle requests from user programs

DRIVER MODEL

ALL drivers are userspace daemons (except serio for PS/2)
Access hardware via: scheme:memory, scheme:irq, iopl syscall
Register as scheme: daemon name becomes /scheme/<name>
PCI devices discovered via pcid daemon → spawns drivers

HISTORICAL POSIX GAPS IN RELIBC (Wayland-facing)

Missing API	Location to implement
signalfd/signalfd4	`relibc/source/src/header/signal/` + active `local/patches/relibc/P3-signalfd*.patch` carriers — current support is recipe-applied, not plain-source convergence
timerfd_create/settime/gettime	`relibc/source/src/header/sys_timerfd/` + active `local/patches/relibc/P3-timerfd-relative.patch` carrier — current support is recipe-applied
eventfd	`relibc/source/src/header/sys_eventfd/` + active `local/patches/relibc/P3-eventfd-mod.patch` carrier — current support is recipe-applied
F_DUPFD_CLOEXEC	`relibc/source/src/header/fcntl/` + `local/patches/relibc/redox.patch` — support language should remain evidence-qualified
MSG_CMSG_CLOEXEC, MSG_NOSIGNAL	`relibc/source/src/header/sys_socket/` — support language should remain evidence-qualified
open_memstream	`relibc/source/src/header/stdio/` + `local/patches/relibc/P3-open-memstream.patch` carrier — current support is patch-carried

The current relibc work is therefore no longer just “add the missing Wayland APIs.” The higher-value remaining work is completeness depth, downstream cleanup, and runtime validation.

ANTI-PATTERNS

DO NOT add drivers to kernel — all drivers must be userspace
DO NOT modify syscall ABI — use libredox/relibc wrappers
DO NOT use unwrap() in drivers — handle errors properly with Result

CASCADE REBUILDS

Core packages (relibc, kernel, base) are at the bottom of the dependency tree. When any of them changes, all dependent packages must be rebuilt:

./local/scripts/rebuild-cascade.sh relibc    # Rebuilds relibc + all downstream
./local/scripts/rebuild-cascade.sh kernel     # Rebuilds kernel + all downstream
./local/scripts/rebuild-cascade.sh base       # Rebuilds base + all downstream

relibc in particular has the widest cascade: any change to its headers or ABI affects every C package in the tree (bison, m4, flex, ncurses, and transitively everything that depends on those).

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