b16d50a307
This addresses a subtle deadlock where an error during a copy prevented pipe closure to propagate correctly. By closing down the read end of the pipe rather than the write end, the waiting writer is properly signaled. A nice side-effect of this change is that errors encountered by io.Copy are now propagated to the verifier's Write method. A test to ensure validation errors for unsupported digest types has been added, as well. Signed-off-by: Stephen J Day <stephen.day@docker.com> Upstream-commit: 0306a41909175b467d08ebc97d4c5136ca9e7ebd Component: engine