commit 52724d3ebd4ccaaa4b9f5576e329d4272cde8ea9
author Elliott Hughes <enh@google.com> Thu Mar 17 12:13:09 2011 -0700
committer Elliott Hughes <enh@google.com> Thu Mar 17 14:00:22 2011 -0700
tree e2895b08e51a2ffed5ffd39f9b7b3bda794f6425
parent ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044

Add fsync(2) and fdatasync(2).

Interesting parts to this change:
* first BlockGuard support (and general delegation support).
* first rethrowing of ErrnoException as IOException.
* switching FileChannelImpl from int to FileDescriptor.

The special case in FileDescriptor.sync has been removed. Testing with the RI
showed that it doesn't treat syncing a FileDescriptor that corresponds to a
socket as a special case --- it throws SyncFailedException just like normal.

Bug: 3107501
Change-Id: I99faf120bd802aec0397a79772ed38c5e1542fed