Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755837AbZDKHyn (ORCPT ); Sat, 11 Apr 2009 03:54:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756910AbZDKHyc (ORCPT ); Sat, 11 Apr 2009 03:54:32 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:59382 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756297AbZDKHyb (ORCPT ); Sat, 11 Apr 2009 03:54:31 -0400 Message-ID: <49E04CDF.90004@cn.fujitsu.com> Date: Sat, 11 Apr 2009 15:55:11 +0800 From: Li Zefan User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Ingo Molnar CC: Tom Zanussi , Steven Rostedt , Frederic Weisbecker , LKML Subject: [PATCH 5/7] tracing/filters: disallow newline as delimeter References: <49E04C22.4040608@cn.fujitsu.com> In-Reply-To: <49E04C22.4040608@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1276 Lines: 41 I guess because user input is often ended with '\n' (like "echo xxx"), thus '\n' is used as a delimeter besides ' ' ? But we can just strip tailing spaces. One of the effects of this patch, is fixing this inconsistency: # echo -n 'parent_comm ==' > filter bash: echo: write error: Invalid argument # echo 'parent_comm ==' > filter # cat filter parent_comm == Signed-off-by: Li Zefan --- kernel/trace/trace_events_filter.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 2bf4481..8e3a095 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -364,7 +364,9 @@ int filter_parse(char **pbuf, struct filter_pred *pred) char *tmp, *tok, *val_str = NULL; int tok_n = 0; - while ((tok = strsep(pbuf, " \n"))) { + strstrip(*pbuf); + + while ((tok = strsep(pbuf, " "))) { if (tok_n == 0) { if (!strcmp(tok, "0")) { pred->clear = 1; -- 1.5.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/