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Date: Thu, 11 Sep 2014 13:35:31 -0700 From: Alexei Starovoitov <ast@...mgrid.com> To: Daniel Borkmann <dborkman@...hat.com> Cc: Andy Lutomirski <luto@...capital.net>, "David S. Miller" <davem@...emloft.net>, Ingo Molnar <mingo@...nel.org>, Linus Torvalds <torvalds@...uxfoundation.org>, Steven Rostedt <rostedt@...dmis.org>, Hannes Frederic Sowa <hannes@...essinduktion.org>, Chema Gonzalez <chema@...gle.com>, Eric Dumazet <edumazet@...gle.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Pablo Neira Ayuso <pablo@...filter.org>, "H. Peter Anvin" <hpa@...or.com>, Andrew Morton <akpm@...uxfoundation.org>, Kees Cook <keescook@...omium.org>, Linux API <linux-api@...r.kernel.org>, Network Development <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v11 net-next 00/12] eBPF syscall, verifier, testsuite On Thu, Sep 11, 2014 at 12:54 PM, Daniel Borkmann <dborkman@...hat.com> wrote: > On 09/10/2014 10:21 PM, Alexei Starovoitov wrote: > ... >>>> >>>> char bpf_log_buf[LOG_BUF_SIZE]; >>> >>> >>> What happens if the size isn't LOG_BUF_SIZE? >> >> >> would do you mean? >> LOG_BUF_SIZE is just a user defined macro. >> Can be anything. > > I believe, Andy means, what would happen if log_level > 0 but > the log_size is not big enough so that the human-readable error > text string from the verifier will fit into it? I presume that > will be truncated then ... hm. Correct. It will be truncated and ENOSPC returned from syscall. Just noticed that I didn't mention that in the manpage... will do. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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