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SubjectRe: FIBMAP ioctl restrictions: why?

On Wed, 10 Nov 1999, Jamie Lokier wrote:

> If you use it as a hint there's no big deal if the information is
> occasionally wrong due to a race. Are there any real race conditions
> with FIBMAP that cause real problems?

The reason we disabled FIBMAP was security. Start passing negative
arguments and watch stuff spew to your syslog. Even with ext2. I managed
to lock my machine but that could have the been due to the klog/console
race rather than a direct result of passing bad arguments to FIBMAP.

Cheers
Chris


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