atomic

Documentation

Overview

Package atomic provides atomic file write helpers built on tmp-file + fsync + rename, the only primitive stdlib gives us for crash-safe writes.

Index

• func WriteFile(path string, data []byte) error
• func WriteFileFrom(path string, r io.Reader) error
• func WriteFileMode(path string, data []byte, mode os.FileMode) error

Functions

func WriteFile

func WriteFile(path string, data []byte) error

WriteFile writes data to path atomically. Permissions are 0o644.

func WriteFileFrom

func WriteFileFrom(path string, r io.Reader) error

WriteFileFrom copies from r to path atomically with mode 0o644.

func WriteFileMode

func WriteFileMode(path string, data []byte, mode os.FileMode) error

WriteFileMode is WriteFile with an explicit mode.