Some file systems implement COW (copy on write) functionality in order to speed up file copies. On a high level, the new file does not actually get copied, but shares the same on-disk data with the source file. As soon as one of the files is modified, the actual copying is done by the underlying OS.
This library exposes a single function,
reflink, which attempts to copy a file using the
underlying OSs' block cloning capabilities. The function signature is identical to
At the moment Linux, Android, OSX, ios and Windows are supported. As soon as other OS support the functionality, support will be added.
Copies a file using COW semantics.
Attempts to reflink a file. If the operation fails, a conventional copy operation is attempted as a fallback.