INNER CODE UNIT · Python

CreateWin32Hardlink

DaemonEngine/Daemon · external_deps/cygtar.py:100

def CreateWin32Hardlink(filepath, targpath, try_mklink):
  """Create a hardlink on Win32 if possible

  Uses mklink to create a hardlink if possible.  On failure, it will
  assume mklink is unavailible and copy the file instead, returning False
  to indicate future calls should not attempt to use mklink."""

  # Assume an error, if subprocess succeeds, then it should return 0
  err = 1
  if try_mklink:
    dst_src = ToNativePath(filepath) + ' ' + ToNativePath(targpath)
    try:
      err = subprocess.call(['cmd', '/C', 'mklink /H ' + dst_src],
                            stdout = open(os.devnull, 'wb'))
    except EnvironmentError:
      try_mklink = False

  # If we failed to create a hardlink, then just copy it.  We wrap this in a

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