Subject: Re: kcopy()
To: Matt Thomas <email@example.com>
From: Andrew Brown <firstname.lastname@example.org>
Date: 12/20/2003 12:05:47
>>my reading of the kcopy() man page made me think that i could pass it
>>a "src" pointer and a "dst" pointer, and it would return EFAULT if
>>either of the pointers were invalid.
>>instead, i'm getting kernel panics.
>>is there a better interface for copying from place to place when you
>>don't know the exact disposition of the pointers (so i can't really
>Who is giving you pointers you can't trust? That sounds like a broken
the kernel, device drivers, lkms, and some users. i don't trust
everyone and i'd like not to have to trust anyone.
just because you trust that the pointer you give me is valid doesn't
mean i trust you to give me a valid pointer, and if i keep the pointer
for a few hours, will it still be valid?
you can't say "yes", so i'm saying "no".
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