From b66f29a1eaaa001b9bdeac7609f84c71b2e48f21 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Fri, 24 Apr 2015 20:36:02 +0200 Subject: udevd: worker - log if worker result cannot be sent If the main daemon is not notified about a worker finishing an event the refcounting of the worker struct will be wrong, and we will lose track of the number of children we have to wait for. This should not happen, but if it does we better complain loudly about it. Worst case udev will wait for 30 seconsd at shutdown waiting for nonexistent workers. --- src/udev/udevd.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'src') diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 339e9c4570..365bb00a7f 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -255,7 +255,7 @@ static void worker_new(struct event *event) { struct udev_event *udev_event; struct worker_message msg; int fd_lock = -1; - int err = 0; + int err = 0, r; log_debug("seq %llu running", udev_device_get_seqnum(dev)); udev_event = udev_event_new(dev); @@ -328,12 +328,15 @@ static void worker_new(struct event *event) { udev_monitor_send_device(worker_monitor, NULL, dev); skip: + log_debug("seq %llu processed with %i", udev_device_get_seqnum(dev), err); + /* send udevd the result of the event execution */ memzero(&msg, sizeof(struct worker_message)); msg.exitcode = err; - send(worker_watch[WRITE_END], &msg, sizeof(struct worker_message), 0); - - log_debug("seq %llu processed with %i", udev_device_get_seqnum(dev), err); + r = send(worker_watch[WRITE_END], &msg, sizeof(struct worker_message), 0); + if (r < 0) + log_error_errno(errno, "failed to send result of seq %llu to main daemon: %m", + udev_device_get_seqnum(dev)); udev_device_unref(dev); dev = NULL; -- cgit v1.2.3-54-g00ecf