December 2011
Intermediate to advanced
485 pages
15h 47m
English
Content preview from OS X and iOS Kernel ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Finding a Driver
The first step in communicating with a kernel driver from a user space application is to locate the running instances of the driver of interest. On a system such as Mac OS X, hardware devices can be plugged into the machine at any time and there may be several instances of a driver loaded if the user has connected multiple hardware devices that are supported by your driver. To handle these cases, the I/O Kit framework provides functions to not only iterate over all devices and drivers in the I/O Registry that match certain criteria, but also allows a callback function to be installed to watch for the arrival or removal of a driver or a device that matches certain criteria.
To locate a specific driver in the I/O Registry, the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.