Kernel drivers and IOCTLs
greg at kroah.com
Wed Jan 22 14:04:33 EST 2020
On Tue, Jan 21, 2020 at 10:27:01PM -0600, WyoFlippa wrote:
> I'm working on a driver that would verify a Linux or U-Boot image is secure
> and I need to pass parameters such as the public key, starting address, etc.
> I'd heard in talking to developers that IOCTLs are frowned upon. I also
> found this article that seems to indicate that using sysfs or proc is a
> better way to go.
> but then I see this article from 2013 which is more recent than the article.
> So are IOCTLs discouraged or not?
They are discouraged, except when they are necessary :)
It all depends on exactly what you are trying to do.
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