atomicfile

Documentation

Overview

Package atomicfile writes a file atomically: a temp file in the destination directory, then a rename, so a crash mid-write never leaves a truncated file. It is the single home for the temp-write-rename dance the profile store and the serve daemon's snapshot store both need.

Index

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

Functions

func Write

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

Write creates data at path atomically with the given file permission. The destination directory must already exist. On any failure the temp file is removed and the original path is left untouched.