search for: 982b172

...call C<nbd_aio_notify_read>. +or C<POLLHUP> you would then call C<nbd_aio_notify_read>. Note that once libnbd reaches C<nbd_aio_is_ready>, this direction is returned even before a command is issued via C<nbd_aio_pwrite> and diff --git a/lib/poll.c b/lib/poll.c index 982b172..d356afe 100644 --- a/lib/poll.c +++ b/lib/poll.c @@ -57,21 +57,28 @@ nbd_unlocked_poll (struct nbd_handle *h, int timeout) set_error (errno, "poll"); return -1; } + if (r == 0) + return 0; /* POLLIN and POLLOUT might both be set. However we shouldn't call *...

While working on a new test of what happens when the server goes away while commands are in flight, I managed to hit a race where I hit death from SIGPIPE instead of a clean transition to the DEAD state. I also found myself wanting to use nbd_poll from the test, but with a way to distinguish between the state machine progressing vs. hanging. Eric Blake (2): socket: Avoid SIGPIPE where possible