uutils/coreutils
Apr 2026 – Apr 2026
1 Month active
Languages Used
Rust
Technical Skills
Linux system callsRustcross-platform developmentfile system managementsystem programming
John Chittum
PROFILE
John Chittum
Worked on enhancing the mkdir functionality in the uutils/coreutils repository, focusing on robust cross-platform directory creation. Developed and integrated support for proper ACL and permission inheritance with mkdir -p, ensuring that directory permissions and umask handling remain consistent across both Linux and macOS. Utilized Rust and Linux system calls to cast mode bits to rustix::fs::RawMode, normalizing permission behavior between platforms. Added regression tests to safeguard against ACL-related permission regressions, improving reliability and security in file system management. The work emphasized system programming best practices and addressed permission-related errors, strengthening the cross-platform compatibility of core directory operations.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
1
Lines of code
152
Activity Months1
Your Network
657 peopleSame Organization
@canonical.com414
Work History
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary focusing on delivering robust cross-platform mkdir functionality in uutils/coreutils. Implemented proper ACL and permission inheritance for mkdir -p, aligned with safe umask handling, and ensured consistent mode behavior across Linux and macOS by casting to rustix::fs::RawMode. Added regression tests to prevent ACL-related regressions. These changes reduce permission-related errors in directory creation, improve security posture, and strengthen cross-platform reliability.
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary focusing on delivering robust cross-platform mkdir functionality in uutils/coreutils. Implemented proper ACL and permission inheritance for mkdir -p, aligned with safe umask handling, and ensured consistent mode behavior across Linux and macOS by casting to rustix::fs::RawMode. Added regression tests to prevent ACL-related regressions. These changes reduce permission-related errors in directory creation, improve security posture, and strengthen cross-platform reliability.
April 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability90.0%
Architecture100.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Rust
Technical Skills
Linux system callsRustcross-platform developmentfile system managementsystem programming
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