From 809593e7f55c1d17c616f60d69ec5904e531ea2f Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Wed, 20 Feb 2013 17:14:52 +0100 Subject: [PATCH] tevent: handle multiplexed fde's in epoll_add_event() Signed-off-by: Stefan Metzmacher Reviewed-by: Jeremy Allison --- lib/tevent/tevent_epoll.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/lib/tevent/tevent_epoll.c b/lib/tevent/tevent_epoll.c index c2b743dcd1f..987748cec51 100644 --- a/lib/tevent/tevent_epoll.c +++ b/lib/tevent/tevent_epoll.c @@ -365,21 +365,41 @@ static void epoll_add_event(struct epoll_event_context *epoll_ev, struct tevent_ { struct epoll_event event; int ret; + struct tevent_fd *mpx_fde = NULL; fde->additional_flags &= ~EPOLL_ADDITIONAL_FD_FLAG_HAS_EVENT; fde->additional_flags &= ~EPOLL_ADDITIONAL_FD_FLAG_REPORT_ERROR; + if (fde->additional_flags & EPOLL_ADDITIONAL_FD_FLAG_HAS_MPX) { + /* + * This is a multiplexed fde, we need to include both + * flags in the modified event. + */ + mpx_fde = talloc_get_type_abort(fde->additional_data, + struct tevent_fd); + + mpx_fde->additional_flags &= ~EPOLL_ADDITIONAL_FD_FLAG_HAS_EVENT; + mpx_fde->additional_flags &= ~EPOLL_ADDITIONAL_FD_FLAG_REPORT_ERROR; + } + ZERO_STRUCT(event); event.events = epoll_map_flags(fde->flags); + if (mpx_fde != NULL) { + event.events |= epoll_map_flags(mpx_fde->flags); + } event.data.ptr = fde; ret = epoll_ctl(epoll_ev->epoll_fd, EPOLL_CTL_ADD, fde->fd, &event); if (ret != 0 && errno == EBADF) { tevent_debug(epoll_ev->ev, TEVENT_DEBUG_ERROR, "EPOLL_CTL_ADD EBADF for " - "fde[%p] fd[%d] - disabling\n", - fde, fde->fd); + "fde[%p] mpx_fde[%p] fd[%d] - disabling\n", + fde, mpx_fde, fde->fd); DLIST_REMOVE(epoll_ev->ev->fd_events, fde); fde->event_ctx = NULL; + if (mpx_fde != NULL) { + DLIST_REMOVE(epoll_ev->ev->fd_events, mpx_fde); + mpx_fde->event_ctx = NULL; + } return; } else if (ret != 0) { epoll_panic(epoll_ev, "EPOLL_CTL_ADD failed", false); @@ -391,6 +411,16 @@ static void epoll_add_event(struct epoll_event_context *epoll_ev, struct tevent_ if (fde->flags & TEVENT_FD_READ) { fde->additional_flags |= EPOLL_ADDITIONAL_FD_FLAG_REPORT_ERROR; } + + if (mpx_fde == NULL) { + return; + } + + mpx_fde->additional_flags |= EPOLL_ADDITIONAL_FD_FLAG_HAS_EVENT; + /* only if we want to read we want to tell the event handler about errors */ + if (mpx_fde->flags & TEVENT_FD_READ) { + mpx_fde->additional_flags |= EPOLL_ADDITIONAL_FD_FLAG_REPORT_ERROR; + } } /* -- 2.11.4.GIT