atomicfile

Documentation

Overview

Package atomicfile provides small helpers for crash-safe file replacement.

Index

• func Write(path string, b []byte, perm, dirPerm os.FileMode) error
• func WritePreserveMode(path string, b []byte, defaultPerm, dirPerm os.FileMode) error

Functions

func Write

func Write(path string, b []byte, perm, dirPerm os.FileMode) error

Write replaces path with b by writing a sibling temp file and renaming it into place. Parent directories are created with dirPerm and the replacement file is written with perm.

func WritePreserveMode

func WritePreserveMode(path string, b []byte, defaultPerm, dirPerm os.FileMode) error

WritePreserveMode replaces path like Write, preserving the existing file's permission bits when it exists and falling back to defaultPerm otherwise.