From 040e689654ef08c63ab93bf0875865398e8d9c91 Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Sun, 24 May 2015 15:20:36 +0200
Subject: [PATCH] udevd: event - fix event queue in daemenozied mode
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

We would enforce that events could only be added to the queue from the
main process, but that brake in daemonized mode. Relax the restriction
to only allow one process to add events to the queue.

Reported by Mantas Mikulėnas.
---
 src/udev/udevd.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 4a44b03..b33a262 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -564,7 +564,10 @@ static int event_queue_insert(Manager *manager, struct udev_device *dev) {
         assert(manager);
         assert(dev);
 
-        /* only the main process can add events to the queue */
+        /* only one process can add events to the queue */
+        if (manager->pid == 0)
+                manager->pid = getpid();
+
         assert(manager->pid == getpid());
 
         event = new0(struct event, 1);
@@ -1300,8 +1303,6 @@ static int manager_new(Manager **ret) {
         if (!manager)
                 return log_oom();
 
-        manager->pid = getpid();
-
         manager->fd_ep = -1;
         manager->fd_ctrl = -1;
         manager->fd_uevent = -1;
-- 
2.3.1