atomicfile

Documentation

Overview

Package atomicfile writes a file so a crash mid-write never leaves it truncated: content goes to a temp file in the SAME directory, is fsync'd, then renamed over the target (an atomic operation on POSIX). Load-bearing state files (config.json, plan snapshots, job meta, checkpoint manifests) use this so a power loss / SIGKILL can't brick the project.

Index

• func WriteFile(path string, data []byte, perm os.FileMode) error

Functions

func WriteFile

func WriteFile(path string, data []byte, perm os.FileMode) error

WriteFile atomically writes data to path with the given permissions. On any failure the original file (if any) is left untouched and the temp file is cleaned up.