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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Loading Preferences and Settings
Many drivers may need some user–configurable per–device preferences or settings. For example, an audio device may have settings to control output volume level, which need to persist across system reboots. A driver cannot trivially access the file system (which is considered bad design anyway), so it cannot read the preferences from a file; however, An I/O Kit driver will have access to information stored in its plist file. The plist file is read-only and shared for all driver instances instantiated by a KEXT. Since a driver may create many instances, all which require different settings the plist file is unsuitable for this purpose.
Although you could implement your own scheme to put per–device settings in a ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.