Re: v2 of seccomp filter c/r patches

[Alexei Starovoitov]

On Thu, Sep 10, 2015 at 06:20:57PM -0600, Tycho Andersen wrote:
> Hi all,
> 
> Here is v2 of the seccomp filter c/r set. The patch notes have individual
> changes from the last series, but there are two points not noted:
> 
> * The series still does not allow us to correctly restore state for programs
>   that will use SECCOMP_FILTER_FLAG_TSYNC in the future. Given that we want to
>   keep seccomp_filter's identity, I think something along the lines of another
>   seccomp command like SECCOMP_INHERIT_PARENT is needed (although I'm not sure
>   if this can even be done yet). In addition, we'll need a kcmp command for
>   figuring out if filters are the same, although this too needs to compare
>   seccomp_filter objects, so it's a little screwy. Any thoughts on how to do
>   this nicely are welcome.
> 
> * I've dropped the bpf converter bug from the set and will submit it
>   separately.
> 
> Alexei mentioned that this should go via net-next to minimize cross-tree
> conflicts. Does that make sense here?

Having looked at the set again I already see conflicts in net/core/filter.c
and in linux/bpf.h with things myself and others are working on for net-next.
So I think it makes the most sense to get the whole set via net-next,
since seccomp bits look limited comparing to bpf changes.
Otherwise the merge window will be unpleasant.

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