atomic

Documentation

Index

• func MoveFile(src, dst string) error
• func WriteFile(filename string, data []byte, perm os.FileMode) error
• func WriteFileReader(filename string, r io.Reader, perm os.FileMode) error

Functions

func MoveFile

func MoveFile(src, dst string) error

MoveFile copies file from src to dst. It only works with a single file and fails, if dst already exists or if dirname(dst) does not exist. Works across partitions (to mitigate "errno 18" "Invalid cross-device link" kind of errors on rename).

func WriteFile

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

WriteFileAtomic writes the data to a temp file and atomically move if everything else succeeds.

func WriteFileReader

func WriteFileReader(filename string, r io.Reader, perm os.FileMode) error

WriteFileReader writes data from a reader atomically into filename. Beware that this will read all file content into memory first.