To listen to the events that the kernel normally sends to udev, we need to create a AF_NETLINK socket with protocol NETLINK_KOBJECT_UEVENT (protocol is not typically used and is 0 for TCP and UDP, but we do need to specify it here):
Why Raising VC Too Early Is the Fastest Way to Kill Your Startup
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will not spend a great deal of time on it, except from the user-space
editor. It shares many of the features of Zed, but is also different in some