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deepmind.google·6d ago
AI Engineering
Hacker News·15d ago·5 min read
Linux kernel will support $ORIGIN, sort of
TL;DR
Relocatable binaries in Nix are being explored through a proposed patch to the Linux kernel. The patch aims to support $ORIGIN in the PT_INTERP and shebang lines.
✦ Why It Matters
Engineers can contribute to the Linux kernel by testing and providing feedback on the proposed $ORIGIN patch.
Key Takeaways
- Consider using eBPF for dynamic interpreter selection in binaries.
- Explore the implications of $ORIGIN support for your applications.
- Stay updated on Linux kernel releases for new features.
- Plan to integrate new dispatch modes for better process identity.
How It Works
The proposed solution uses eBPF to create a program that matches ELF binaries and dynamically sets their interpreter based on the binary's path. This allows for the use of $ORIGIN in both the interpreter path and shebang lines, enhancing the flexibility of binary execution.