add generic udev-filter

Other plugins can add a filter for different subsystems and devnodes.
example:
AddUdevMonitor video4linux /dev/video

If udev signals an "add"-event whose devnode starts with "/dev/video"
the whole devnode is queued for attaching.

1 files changed, 7 insertions, 0 deletions

diff --git a/udev.c b/udev.c
index 77cc744..f37fc77 100644
--- a/udev.c
+++ b/udev.c
@@ -67,6 +67,13 @@ cUdevListEntry *cUdevDevice::GetDevlinksList(void) const
   return new cUdevListEntry(listEntry);
 }
 
+const char  *cUdevDevice::GetDevnode(void) const
+{
+  if (device == NULL)
+     return false;
+  return udev_device_get_devnode(device);
+}
+
 cUdevDevice *cUdevDevice::GetParent(void) const
 {
   if (device == NULL)