[libvirt] [PATCH v4 3/7] udev: Split udevEventHandleCallback in two functions

[Erik Skultety]

This patch splits udevEventHandleCallback in two (introduces
udevEventHandleThread) in order to be later able to refactor the latter
to actually become a detached thread which will wait some time for the
kernel to create the whole sysfs tree for a device as we cannot do that
in the event loop directly.

Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
 src/node_device/node_device_udev.c | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 6c7f887ed..e144472f1 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1646,13 +1646,11 @@ udevEventCheckMonitorFD(struct udev_monitor *udev_monitor,
 
 
 static void
-udevEventHandleCallback(int watch ATTRIBUTE_UNUSED,
-                        int fd,
-                        int events ATTRIBUTE_UNUSED,
-                        void *data ATTRIBUTE_UNUSED)
+udevEventHandleThread(void *opaque)
 {
     struct udev_device *device = NULL;
     struct udev_monitor *udev_monitor = NULL;
+    int fd = (intptr_t) opaque;
 
     nodeDeviceLock();
     udev_monitor = DRV_STATE_UDEV_MONITOR(driver);
@@ -1676,6 +1674,27 @@ udevEventHandleCallback(int watch ATTRIBUTE_UNUSED,
 }
 
 
+static void
+udevEventHandleCallback(int watch ATTRIBUTE_UNUSED,
+                        int fd,
+                        int events ATTRIBUTE_UNUSED,
+                        void *data ATTRIBUTE_UNUSED)
+{
+    struct udev_monitor *udev_monitor = NULL;
+
+    nodeDeviceLock();
+    udev_monitor = DRV_STATE_UDEV_MONITOR(driver);
+
+    if (!udevEventCheckMonitorFD(udev_monitor, fd)) {
+        nodeDeviceUnlock();
+        return;
+    }
+    nodeDeviceUnlock();
+
+    udevEventHandleThread((void *)(intptr_t) fd);
+}
+
+
 /* DMI is intel-compatible specific */
 #if defined(__x86_64__) || defined(__i386__) || defined(__amd64__)
 static void
-- 
2.13.5