From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFA9FC56202 for ; Thu, 26 Nov 2020 17:51:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C26621D7E for ; Thu, 26 Nov 2020 17:51:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="xHtHqSlA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391748AbgKZRvl (ORCPT ); Thu, 26 Nov 2020 12:51:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:44868 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391741AbgKZRvk (ORCPT ); Thu, 26 Nov 2020 12:51:40 -0500 Received: from quaco.ghostprotocols.net (unknown [179.97.37.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A4B9420665; Thu, 26 Nov 2020 17:51:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606413099; bh=gZ9qg9LQpXvKPlB4tlTS2cx56/Nkhs90eRgyWc22/R8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=xHtHqSlA2oXWFzgw8iu3A3pmabY12hk5Xj6fcY11uqNOHIyTWE3oX84a4p11zOmfW R3tXZ5nzYgRvteguGf0fFKKFaxzuiox5kX5MQJct5raKY9LAekR+OZoN/L1Zv/h8Ud 3G8us4/3Jiaqc/jXauqueygqcx+OODSqApAM7PUY= Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 72B2B40E29; Thu, 26 Nov 2020 14:51:37 -0300 (-03) Date: Thu, 26 Nov 2020 14:51:37 -0300 From: Arnaldo Carvalho de Melo To: Jiri Olsa Cc: Ian Rogers , lkml , Peter Zijlstra , Ingo Molnar , Mark Rutland , Namhyung Kim , Alexander Shishkin , Michael Petlan , Song Liu , Stephane Eranian , Alexey Budankov , Andi Kleen , Adrian Hunter Subject: Re: [PATCH 20/25] perf tools: Add is_perf_data function Message-ID: <20201126175137.GE70905@kernel.org> References: <20201126170026.2619053-1-jolsa@kernel.org> <20201126170026.2619053-21-jolsa@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201126170026.2619053-21-jolsa@kernel.org> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Thu, Nov 26, 2020 at 06:00:21PM +0100, Jiri Olsa escreveu: > Adding is_perf_data function that returns true if > the given path is perf data file. It will be used > in following patches. Thanks, applied. - Arnaldo > Acked-by: Ian Rogers > Signed-off-by: Jiri Olsa > --- > tools/perf/util/data.c | 19 +++++++++++++++++++ > tools/perf/util/data.h | 1 + > 2 files changed, 20 insertions(+) > > diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c > index 05bbcb663c41..f29af4fc3d09 100644 > --- a/tools/perf/util/data.c > +++ b/tools/perf/util/data.c > @@ -492,3 +492,22 @@ char *perf_data__kallsyms_name(struct perf_data *data) > > return kallsyms_name; > } > + > +bool is_perf_data(const char *path) > +{ > + bool ret = false; > + FILE *file; > + u64 magic; > + > + file = fopen(path, "r"); > + if (!file) > + return false; > + > + if (fread(&magic, 1, 8, file) < 8) > + goto out; > + > + ret = is_perf_magic(magic); > +out: > + fclose(file); > + return ret; > +} > diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h > index c563fcbb0288..62a3e66fbee8 100644 > --- a/tools/perf/util/data.h > +++ b/tools/perf/util/data.h > @@ -98,4 +98,5 @@ int perf_data__update_dir(struct perf_data *data); > unsigned long perf_data__size(struct perf_data *data); > int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); > char *perf_data__kallsyms_name(struct perf_data *data); > +bool is_perf_data(const char *path); > #endif /* __PERF_DATA_H */ > -- > 2.26.2 > -- - Arnaldo