From patchwork Thu Dec 2 12:29:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Tzvetomir Stoyanov (VMware)" X-Patchwork-Id: 12652509 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4019C43219 for ; Thu, 2 Dec 2021 12:29:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346808AbhLBMci (ORCPT ); Thu, 2 Dec 2021 07:32:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240508AbhLBMcg (ORCPT ); Thu, 2 Dec 2021 07:32:36 -0500 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 318F8C06174A for ; Thu, 2 Dec 2021 04:29:14 -0800 (PST) Received: by mail-ed1-x533.google.com with SMTP id y13so115259775edd.13 for ; Thu, 02 Dec 2021 04:29:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PH/XyhHdUEZTPFiWA1EBnh+dtXsTepoAuGsqMwaJ0o0=; b=Rdz/wMP0Fg0Lv7o8PQkZhLheMTm/aL+ZsLvWimFdDP+If9Hh5TebVKq6ydxgQytTHL 0WVM4w5gur7dss+zEFfsivQRSwFK0PIQigs8qFHhT1rFRwGMnUMIc2D1i1wpFT3ppWV3 +kzT105A8z3VGorDcwPsaKZRXpULI7ByA62Bv7ol4kBmnOrQmwwEk+xRn9jrjt6e5CU4 cVm3zF6Whzj0Tj8P4Xr4RpBQzB02u8FxVrSuCILBg0DbvN2NHzdCaV8SbsudJcz7P+Vf NEPEmFDmBoM3AkvMtGbDg9GqJRFFViG2cAq5Wgs3B0MV/EjALxUsJozMbsJBxRaroZam evBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PH/XyhHdUEZTPFiWA1EBnh+dtXsTepoAuGsqMwaJ0o0=; b=4A5iY2Oyw1B9QhQMFg4b+nrFuwtcBechwUIOtrYFoLQUi6y6SJHHvy+rL7nWArEUv4 FTJP5KNgcMKAd0+Iwx+fh+m2HXDMDGiZCGKOXGl7T4oPSttWqBVeViCZC7M+EUSDhbqF +hUyEkAmbVpHpxcADozfxWIPBiCO93Ee42dlmBZVM06g6sO/oN534CXIas54HFHLxaJz pACdI6T8d30zqG/evLVpOrb2iQOkCPe2Pco7YTSq2V6CmpwEStSiYY45nEmYXZ5EsMO9 XurArsNw1LejB6Oe8O2lUVREfmf3yUGJUUo+csJkt7s41393p2FSg6iRCuseZXYPBmOI 1Hwg== X-Gm-Message-State: AOAM532X+KHvIpd+sb2ambo5JUILfWjo5ONBTjLizEWGHcjXUXBGsQV+ kRQL6I4MLvXvq9hkdc1Bm0ixjDFUhO6u2w== X-Google-Smtp-Source: ABdhPJxoojIphzMCUMQSc51vOviys3bZEGTOcNkuVolxKe+wFWmCYpIhYMgcxCAD8lw5A7PMJb89kQ== X-Received: by 2002:a05:6402:12c1:: with SMTP id k1mr17209044edx.355.1638448152814; Thu, 02 Dec 2021 04:29:12 -0800 (PST) Received: from oberon.zico.biz.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id m16sm2182692edd.61.2021.12.02.04.29.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Dec 2021 04:29:12 -0800 (PST) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v5 04/10] trace-cmd dump: Read recursively all options sections Date: Thu, 2 Dec 2021 14:29:01 +0200 Message-Id: <20211202122907.44008-5-tz.stoyanov@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211202122907.44008-1-tz.stoyanov@gmail.com> References: <20211202122907.44008-1-tz.stoyanov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org Trace file version 7 supports multiple options sections in the file. The DONE option is extended to hold the offset to the next options section. A new logic for handling the extended DONE option and to read recursively all options sections is added. Signed-off-by: Tzvetomir Stoyanov (VMware) --- tracecmd/trace-dump.c | 76 ++++++++++++++++++++++++++++++++++++++----- 1 file changed, 68 insertions(+), 8 deletions(-) diff --git a/tracecmd/trace-dump.c b/tracecmd/trace-dump.c index e3c40a0d..a808c7d7 100644 --- a/tracecmd/trace-dump.c +++ b/tracecmd/trace-dump.c @@ -422,6 +422,30 @@ static void dump_option_string(int fd, int size, char *desc) read_dump_string(fd, size, OPTIONS); } +static void dump_section_header(int fd, enum dump_items v, unsigned short *flags) +{ + unsigned long long offset; + unsigned short fl; + char buf[DUMP_SIZE]; + unsigned short id; + int size; + + offset = lseek64(fd, 0, SEEK_CUR); + if (read_file_number(fd, &id, 2)) + die("cannot read the section id"); + if (read_file_string(fd, buf, DUMP_SIZE)) + die("no section description"); + if (read_file_number(fd, &fl, 2)) + die("cannot read the section flags"); + if (read_file_number(fd, &size, 4)) + die("cannot read section size"); + do_print(v, "\t[Section %d @ %lld: \"%s\", flags 0x%X, %d bytes]\n", + id, offset, buf, fl, size); + + if (flags) + *flags = fl; +} + static void dump_option_buffer(int fd, int size) { unsigned long long offset; @@ -636,25 +660,48 @@ void dump_option_tsc2nsec(int fd, int size) do_print(OPTIONS, "%d %d %llu [multiplier, shift, offset]\n", mult, shift, offset); } -static void dump_options(int fd) +static int dump_options_read(int fd); + +static int dump_option_done(int fd, int size) { + unsigned long long offset; + + do_print(OPTIONS, "\t\t[Option DONE, %d bytes]\n", size); + + if (file_version < FILE_VERSION_SECTIONS || size < 8) + return 0; + if (read_file_number(fd, &offset, 8)) + die("cannot read the next options offset"); + do_print(OPTIONS, "%lld\n", offset); + if (!offset) + return 0; + + if (lseek64(fd, offset, SEEK_SET) == (off_t)-1) + die("cannot goto next options offset %lld", offset); + return dump_options_read(fd); +} + +static int dump_options_read(int fd) +{ + unsigned short flags = 0; unsigned short option; unsigned int size; int count = 0; + if (file_version >= FILE_VERSION_SECTIONS) + dump_section_header(fd, OPTIONS, &flags); + if ((flags & TRACECMD_SEC_FL_COMPRESS) && uncompress_block()) + die("cannot uncompress file block"); + for (;;) { if (read_file_number(fd, &option, 2)) die("cannot read the option id"); - if (!option) + if (option == TRACECMD_OPTION_DONE && file_version < FILE_VERSION_SECTIONS) break; if (read_file_number(fd, &size, 4)) die("cannot read the option size"); count++; - if (!DUMP_CHECK(OPTIONS) && !DUMP_CHECK(CLOCK) && !DUMP_CHECK(SUMMARY)) { - lseek64(fd, size, SEEK_CUR); - continue; - } switch (option) { case TRACECMD_OPTION_DATE: dump_option_string(fd, size, "DATE"); @@ -666,7 +713,8 @@ static void dump_options(int fd) dump_option_buffer(fd, size); break; case TRACECMD_OPTION_TRACECLOCK: - dump_option_string(fd, size, "TRACECLOCK"); + do_print(OPTIONS, "\t\t[Option TRACECLOCK, %d bytes]\n", size); + read_dump_string(fd, size, OPTIONS | CLOCK); has_clock = 1; break; case TRACECMD_OPTION_UNAME: @@ -699,6 +747,10 @@ static void dump_options(int fd) case TRACECMD_OPTION_TSC2NSEC: dump_option_tsc2nsec(fd, size); break; + case TRACECMD_OPTION_DONE: + uncompress_reset(); + count += dump_option_done(fd, size); + return count; default: do_print(OPTIONS, " %d %d\t[Unknown option, size - skipping]\n", option, size); @@ -706,8 +758,16 @@ static void dump_options(int fd) break; } } - do_print(SUMMARY, "\t[%d options]\n", count); + uncompress_reset(); + return count; +} + +static void dump_options(int fd) +{ + int count; + count = dump_options_read(fd); + do_print(SUMMARY|OPTIONS, "\t[%d options]\n", count); } static void dump_latency(int fd)