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Date:   Mon, 23 Mar 2020 15:12:57 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Casey Schaufler <casey@schaufler-ca.com>
Cc:     KP Singh <kpsingh@chromium.org>, linux-kernel@vger.kernel.org,
        linux-security-module@vger.kernel.org,
        Brendan Jackman <jackmanb@google.com>,
        Florent Revest <revest@google.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        James Morris <jmorris@namei.org>, Paul Turner <pjt@google.com>,
        Jann Horn <jannh@google.com>,
        Florent Revest <revest@chromium.org>,
        Brendan Jackman <jackmanb@chromium.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH bpf-next v5 5/7] bpf: lsm: Initialize the BPF LSM hooks
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On Mon, Mar 23, 2020 at 02:58:18PM -0700, Casey Schaufler wrote:
> That's not too terrible, I suppose. What would you be thinking for
> the calls that do use call_int_hook()?
> 
> 	rc = call_int_hook(something, something_default, goodnesses);
> 
> or embedded in the macro:
> 
> 	rc = call_int_hook(something, goodnesses);

Oh yes, good point. The hook call already knows the name, so:

#define call_int_hook(FUNC, ...) ({                        \
        int RC = FUNC#_default;                            \
...


-- 
Kees Cook