On 01/07/2015 01:23 PM, Daniel Borkmann wrote:
> On 01/07/2015 12:53 PM, Michael Kerrisk (man-pages) wrote:
> ...
>> Still hoping to hear from Will Drewy regarding this FIXME in the
>> page source:
>>
>> .\" FIXME What is the significance of the line
>> .\" ftest->code = BPF_LDX | BPF_W | BPF_ABS;
>> .\" in kernel/seccomp.c::seccomp_check_filter()?
>
> This came in from our rework via commit bd4cf0ed331a ("net: filter:
> rework/optimize internal BPF interpreter's instruction set"), and
> is kernel-internal only, and unused in classic BPF. It translates
> into A = *(u32 *) (ctx + K) and will basically load an offset from
> the populated seccomp_data (= ctx) to A. For the man-page itself
> it has therefore no relevance, hope that clarifies it.
Thanks, Daniel.
Okay -- that was the last hurdle. The page should go out with the
next man-pages release.
Cheers,
Michael
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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