otaripper v2.3.0

What’s New in v2.3.0

A massive performance and reliability overhaul. v2.3.0 introduces "Zero-Copy" extraction for ZIP-based payloads and deep kernel-level I/O optimizations that push the limits of NVMe and high-speed storage.

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Highlights

• Zero-Copy ZIP Extraction: By utilizing direct memory mapping for STORED entries within ZIP files, otaripper now bypasses traditional extraction buffers entirely. This leads to near-instantaneous mapping and extreme throughput for modern Android OTA zips.
• Kernel-Level Zero-Fill Bypass: Optimized the handling of empty blocks by bypassing user-space zeroing. On supported filesystems, this drastically reduces CPU cycles and disk wear when encountering sparse partitions.
• Atomic Pipeline Refactor: The extraction engine has been decomposed into focused, method-driven stages. This architectural change hardens error recovery, ensuring that partial extractions are cleaned up gracefully and diagnostics are more precise.
• Enhanced I/O Caching: Implemented OS-level sequential caching hints. This pre-warms the system's page cache during extraction, resulting in significantly faster SHA-256 validation passes.

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Performance & Core Improvements

Pushing I/O Boundaries

• posix_fallocate Integration: On Linux, we now use posix_fallocate to pre-allocate disk space. This eliminates file fragmentation and reduces write contention on highly-parallel extraction tasks.
• Modernized Dependencies: Updated sysinfo to v0.39.0 for more accurate hardware detection and thread-scaling logic.
• Hardened Recovery: Improved lock-poisoning handling and transactional cleanup logic to ensure the filesystem remains consistent even if a process is interrupted.

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What's Changed

• feat: instant zip extraction via direct memory mapping by @ArKT-7
• perf: bypass user-space zeroing for empty blocks by @ArKT-7
• perf: add OS-level sequential caching to speed up I/O and SHA-256 validation by @ArKT-7
• perf: use posix_fallocate on Linux to fix write contention by @ArKT-7
• refactor: decompose extraction pipeline into focused methods with hardened error recovery by @syedinsaf
• build(deps): update sysinfo to 0.39.0 by @syedinsaf

Full Changelog: v2.2.2...v2.3.0

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Download Guide — Pick the Right Build

Platform	Architecture	Download	Notes
🪟 Windows	x86_64 (MSVC)	⬇️ otaripper-2.3.0-windows-msvc-x86_64.zip	⭐ Recommended for most Windows users
🪟 Windows	x86_64 (MinGW / GNU)	⬇️ otaripper-2.3.0-windows-gnu-x86_64.zip	Only if you explicitly need MinGW
🐧 Linux	x86_64 (glibc)	⬇️ otaripper-2.3.0-linux-x86_64.tar.gz	Standard dynamic Linux build
🐧 Linux	x86_64 (static / musl)	⬇️ otaripper-2.3.0-linux-static-x86_64.tar.gz	Fully portable, works on almost any distro
🐧 Linux	ARM64 (aarch64)	⬇️ otaripper-2.3.0-linux-arm64.tar.gz	ARM servers, SBCs, phones
🍎 macOS	Intel (x86_64)	⬇️ otaripper-2.3.0-macos-x86_64.tar.gz	Intel-based Macs
🍎 macOS	Apple Silicon (ARM64)	⬇️ otaripper-2.3.0-macos-arm64.tar.gz	M1 - M5 Macs
🤖 Android / Termux	ARM64	⬇️ otaripper-2.3.0-android-arm64.zip	Termux-only environment

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Integrity & Verification

All releases include .sha256 checksum files so you can verify downloads before running.

sha256sum -c otaripper-2.3.0-<build>.sha256