overlayutils

func ErrDTypeNotSupported ¶

func ErrDTypeNotSupported(driver, backingFs string) error

ErrDTypeNotSupported denotes that the backing filesystem doesn't support d_type.

func SupportsOverlay ¶

func SupportsOverlay(d string, checkMultipleLowers bool) error

SupportsOverlay checks if the system supports overlay filesystem by performing an actual overlay mount.

checkMultipleLowers parameter enables check for multiple lowerdirs, which is required for the overlay2 driver.