Messages in this thread | | | From | Andy Lutomirski <> | Date | Thu, 17 Apr 2014 11:13:27 -0700 | Subject | Re: [PATCH v2 0/3] seccomp: add PR_SECCOMP_EXT and SECCOMP_EXT_ACT_TSYNC |
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On Thu, Apr 17, 2014 at 11:05 AM, Kees Cook <keescook@chromium.org> wrote: > This adds the ability for threads to request seccomp filter > synchronization across their thread group. To support this, > seccomp locking on writes is introduced, along with refactoring > of no_new_privs. Races with thread creation are handled via the > tasklist_list. > > I think all the concerns raised during the discussion[1] of the first > version of this patch have been addressed. However, the races involved > have tricked me before. :) >
Would this be easier to use if there were a single syscall to set a seccomp filter and sync threads? That way you wouldn't have to write your filter such that it gives permission to sync threads.
--Andy
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