> On Wed, 10 Jan 2001, Chris Mason wrote:
>
>> In filldir, I don't like the line where we ((char *)dirent += reclen ;
>> If reclen is much larger than the buffer sent from userspace, I don't
>> see how we stay in bounds.
>
> So? copy_to_user() and put_user() will refuse to scramble the
> kernel memory. IOW, dirent can be out of the userspace. Hell, user could
> call getdents() and pass it a kernel pointer. Try it and you'll see what
> happens.
>
Ah thanks, that makes more sense. But, copy_to_user is only working on
namelen bytes, and reclen is bigger than that. So, who is checking the
value for the buf->current_dir pointer?
-chris
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