From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next] bpf: add support for %s specifier to bpf_trace_printk() Date: Thu, 27 Aug 2015 16:20:39 -0700 (PDT) Message-ID: <20150827.162039.1520656052011605652.davem@davemloft.net> References: <1440656819-25622-1-git-send-email-ast@plumgrid.com> <20150827.153409.893765406170260565.davem@davemloft.net> <55DF97E6.9050108@plumgrid.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: mingo@kernel.org, rostedt@goodmis.org, wangnan0@huawei.com, hekuang@huawei.com, daniel@iogearbox.net, brendan.d.gregg@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: ast@plumgrid.com Return-path: In-Reply-To: <55DF97E6.9050108@plumgrid.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Alexei Starovoitov Date: Thu, 27 Aug 2015 16:06:14 -0700 > Fair or you still think it should be per byte copy? I'm terribly surprised we don't have an equivalent of strncpy() for unsafe kernel pointers. You probably won't be the last person to want this, and it's silly to optimize it in one place and then wait for cut&paste into the next guy.