commit 8a74190b1dc6acfb1fd371b94a450c6c0bef0700
author David Brazdil <dbrazdil@google.com> Sat Dec 17 21:41:04 2022 +0000
committer David Brazdil <dbrazdil@google.com> Tue Dec 20 08:18:04 2022 +0000
tree 1a6e7f41dd996d6b41539258dd84d2fae4e25440
parent 8a1a5f8d8a8d3c7cb4ac5aed4e5b7a2ac14f2bd2

rpc_binder: Properly shut down on socketpair() EOF

FdTrigger::triggerablePoll returns OK on POLLIN (higher priority)
and DEAD_OBJECT on POLLHUP (lower priority). Unlike INET or vsock,
socketpair() sockets trigger POLLIN|POLLHUP on EOF and EOF is detected
by recvmsg() returning zero bytes.

Adjust the server accept loop to take this into account and correctly
break out of the loop.

Bug: 250685929
Test: cleanly shut down UDS bootstrap RpcServer
Change-Id: I56d6a67373f16b5b1bdc167de94a7252bedca8e2