filesystem

func AtomicWrite ¶

func AtomicWrite(parent string, fileName string, perm os.FileMode, data []byte) error

func Lock ¶

func Lock(path string) (file *os.File, err error)

Lock places an advisory write lock on the file, blocking until it can be locked.

If Lock returns nil, no other process will be able to place a read or write lock on the file until this process exits, closes f, or calls Unlock on it.

func ReadOnlyLock ¶

func ReadOnlyLock(path string) (file *os.File, err error)

ReadOnlyLock places an advisory read lock on the file, blocking until it can be locked.

If ReadOnlyLock returns nil, no other process will be able to place a write lock on the file until this process exits, closes f, or calls Unlock on it.

func Unlock ¶

func Unlock(lock *os.File) error

Unlock removes an advisory lock placed on f by this process.

func ValidatePathComponent ¶

func ValidatePathComponent(pathComponent string) error

ValidatePathComponent will enforce os specific filename restrictions on a single path component.

func WithLock ¶

func WithLock(path string, function func() error) (err error)

WithLock executes the provided function after placing a write lock on `path`. The lock is released once the function has been run, regardless of outcome.

func WithReadOnlyLock ¶

func WithReadOnlyLock(path string, function func() error) (err error)

WithReadOnlyLock executes the provided function after placing a read lock on `path`. The lock is released once the function has been run, regardless of outcome.