tree 0039e19e5e3295605c2babe28d88d403104cb3cd
parent d091522de95877064c3fe41dd6f1e9d89c819c2d
author Daniel Rosenberg <drosen@google.com> 1626151283 -0700
committer Daniel Rosenberg <drosen@google.com> 1627703086 -0700

snapuserd: Add XorSink

We can compute the xor while decompessing by computing it within a
buffer. This would allow us to use a smaller buffer than the full block
size if we wish to cut down on the extra memory required.

Bug: 177104308
Test: cow_snapuserd_test (Snapuserd_Test.xor_buffer)
Change-Id: Id18505841c77340760cea2d20e83454f1142b9b5