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Tobias Heider

PROFILE

Tobias Heider

Tobias enhanced cross-platform system programming in open source projects by implementing BSD-specific features and reliability fixes. In rust-lang/libc, he added BSD devname and closefrom support, expanding syscall coverage and improving API parity across NetBSD, OpenBSD, and DragonFly BSD using C bindings and Rust. For systemd/systemd, he addressed kernel load path handling in the Linux stub, ensuring correct memory file path usage and preserving parent image integrity during boot. In YaLTeR/niri, he improved resource management on OpenBSD by manually closing file descriptors where close_range was unavailable. His work demonstrated depth in operating system interfaces and embedded systems development.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

4Total
Bugs
2
Commits
4
Features
2
Lines of code
107
Activity Months4

Your Network

291 people

Work History

February 2026

1 Commits

Feb 1, 2026

February 2026 monthly summary: Improved cross-platform stability for YaLTeR/niri by implementing an OpenBSD-specific file descriptor cleanup workaround to ensure no leaks and consistent behavior where close_range is unavailable.

August 2025

1 Commits

Aug 1, 2025

August 2025 — Systemd development focused on reliability of kernel loading path in the Linux stub for systemd/systemd. Delivered a targeted bug fix improving file path handling during kernel load, preventing incorrect memory path usage and preserving the integrity of the parent image information after the load operation. This change enhances stability of kernel loads in Linux stub scenarios and reduces risk of misloaded images during system boot or service initialization.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025 monthly summary for rust-lang/libc focused on cross-platform BSD compatibility improvements. Delivered BSD libc closefrom support across NetBSD, OpenBSD, and DragonFly BSD; implemented function signature in libc modules and updated semver tests to reflect the new API, advancing platform parity and reducing edge-case maintenance for FD management on BSD targets.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025: BSD devname(3) support added to the libc crate, expanding BSD syscall coverage and improving cross-platform compatibility. No major bugs fixed this month.

Activity

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Quality Metrics

Correctness97.6%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CRust

Technical Skills

BootloadersC BindingsEmbedded SystemsOperating System InterfacesRustSystem Programmingcross-platform developmentsystem programming

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

rust-lang/libc

Feb 2025 Mar 2025
2 Months active

Languages Used

Rust

Technical Skills

C BindingsSystem ProgrammingOperating System Interfaces

systemd/systemd

Aug 2025 Aug 2025
1 Month active

Languages Used

C

Technical Skills

BootloadersEmbedded SystemsSystem Programming

YaLTeR/niri

Feb 2026 Feb 2026
1 Month active

Languages Used

Rust

Technical Skills

Rustcross-platform developmentsystem programming