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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 D8485C4320E for ; Mon, 30 Aug 2021 17:34:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D2EB60E77 for ; Mon, 30 Aug 2021 17:34:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238231AbhH3Rfr (ORCPT ); Mon, 30 Aug 2021 13:35:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238147AbhH3Rfj (ORCPT ); Mon, 30 Aug 2021 13:35:39 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2A57C061764; Mon, 30 Aug 2021 10:34:45 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id 7so12748294pfl.10; Mon, 30 Aug 2021 10:34:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yU4+xx6iAwgsGxgz5Ht4AFD9WjITvbQsNdCqZ6ULtK4=; b=jvLCEjluWiKv4zpLIy1fBtQofZjH2laDX82OKUaTGAdLmCDRPoKNaieeyjWQaFJXiU +2Rki+ft3m+hw9hlATBeHeirRi6MK//1hvbMUdUb1KKAzdIyltxdO2DbTN4yhW9DC2ke AQ91Cj9oFAS03W+4xuJoSntdHWdCS+pbOioSj5NGbc5kIAD2iJEf+tkplvWljyPouhcU tmn+xaASv4pBqRIiAlBHvdPwByjg2B3dCXbXtRediqWO1+D9U7NOLQV16ZlNp29qL/gc uOzhecsg+x9qAvxD0o7/2Sy7xNTvAIb1ybQxRcHOdESPG0G77R4UM0Cs7fhUaRLAEJJK H/aQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yU4+xx6iAwgsGxgz5Ht4AFD9WjITvbQsNdCqZ6ULtK4=; b=c39cJH/LtYdntDTjyQ7S2v/DzVd120TdFd4rLMfifAE7djOyB9t8+q9ugMKD5T8wc0 qSL+DfiLfprjDq3CWZIK0YZKddPILEB14NzxQVPv976VIGQAqUQFn8r1e6N00tIbZJs8 8lgkkMrjrr3jFs+UDjTrxb3IgPuqww6MJCPqG15vongwtW5gbzMMaQrb3tGY3FpQCXld xYL161EoCIahpXrEKj1EiVMp8+2jgoNIYiMRTmD64XOEabyzFj2e2k/lZIG8QoRJSqI1 QCL17XD+nHRMXNpnOykFP2z5tfWEg4rkBBRKIVwHlN9hvf3qcnVrzNWfL0khKvnTIuxR c1cA== X-Gm-Message-State: AOAM531Jgxs9rYoeL+TU6557ioCag/FOPhAHmwJZPBqnilKmgz7HC+0o G68eWF8w5br9Tjd8NehW8DVbfX1VjXdx8Q== X-Google-Smtp-Source: ABdhPJynjRPrD2xFf/w7J1BHLShTqTaKUB6DMCuljgvWg+RkaCIn1n5+I+WOxi1UKEXjpWJFWhltzg== X-Received: by 2002:a62:1816:0:b0:3fc:c349:af7c with SMTP id 22-20020a621816000000b003fcc349af7cmr10036437pfy.31.1630344885395; Mon, 30 Aug 2021 10:34:45 -0700 (PDT) Received: from localhost ([2405:201:6014:d820:9cc6:d37f:c2fd:dc6]) by smtp.gmail.com with ESMTPSA id m64sm18223072pga.55.2021.08.30.10.34.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Aug 2021 10:34:45 -0700 (PDT) From: Kumar Kartikeya Dwivedi To: bpf@vger.kernel.org Cc: Kumar Kartikeya Dwivedi , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , Jesper Dangaard Brouer , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= , netdev@vger.kernel.org Subject: [PATCH bpf-next RFC v1 5/8] tools: Allow specifying base BTF file in resolve_btfids Date: Mon, 30 Aug 2021 23:04:21 +0530 Message-Id: <20210830173424.1385796-6-memxor@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210830173424.1385796-1-memxor@gmail.com> References: <20210830173424.1385796-1-memxor@gmail.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2098; h=from:subject; bh=kZhRM1Uo6vUje4gN/WsUjSsDNLJ5u0WuItuVyu5D9Zk=; b=owEBbQKS/ZANAwAIAUzgyIZIvxHKAcsmYgBhLRX9DhwehFEbRic2pkL2wCQ10r1eCg0KKIKoWVSG lKYtwOmJAjMEAAEIAB0WIQRLvip+Buz51YI8YRFM4MiGSL8RygUCYS0V/QAKCRBM4MiGSL8RygKPD/ 9tQw7XRzgDl94ByIZTRqMn5kChomef301BN3pM457RFSBeomwD+oe6V9DNDACdf0GqL/bwyMiu3f5Y gy6/GkAuhpTVtMVcpyx3Tjqx8KiOs1/96yjSr170AFVBCwtzS9csDgpi532ip5h/b3IUHTJWKSBb5b QTsy8RCeSkWBibloygFNUpXaG+bqYiZ8V54JcHtVET/2tsBayqUekFN+a4DPbw9ImA+l/D/I+VZXpA N/6UEB0+/5IBFeMjvRdA6xAjm3sXEhe3aeO6Umxn1pnH2+kdwelkI20meCwc03jhqnus3VEntp9wMh vlu9ZVhdhMqla7DFBJyhENvK7nrMPLqNgQIDr9HDOVOx+QEO6bhh9qUUED5YGaoEWzxNDWLGalcdwJ nT9Ou6NXpdBOXrqT9USmuM0cq1CS2XZLAuj2viYGKwjExU6cZt5dhpY+xwn+5Fx5ZqpGbn9eE/86GY 6CGcLXmEG9F0YvM547eOxyY3dM08t2hEGJrzIQH6N6PH6btmst+mfvlI3qWjF1VY6WQg4h7ZwV7HtN lo5RLGSbdzxuVDm3KOHU8Mso17uhLfBhXJM3voliluh0z+vM2Mwflza3E8EQ2g5wAcuTEOsG33LQmQ kK+jvElZXp2yVp+3cnTN2l/lSVkdoIZ4dHUR1mL8/hTsEySSqxPR0VwJ5Y1g== X-Developer-Key: i=memxor@gmail.com; a=openpgp; fpr=4BBE2A7E06ECF9D5823C61114CE0C88648BF11CA Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This commits allows specifying the base BTF for resolving btf id lists/sets during link time in the resolve_btfids tool. The base BTF is set to NULL if no path is passed. This allows resolving BTF ids for module kernel objects. Signed-off-by: Kumar Kartikeya Dwivedi --- tools/bpf/resolve_btfids/main.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c index de6365b53c9c..206e1120082f 100644 --- a/tools/bpf/resolve_btfids/main.c +++ b/tools/bpf/resolve_btfids/main.c @@ -89,6 +89,7 @@ struct btf_id { struct object { const char *path; const char *btf; + const char *base_btf_path; struct { int fd; @@ -477,16 +478,27 @@ static int symbols_resolve(struct object *obj) int nr_structs = obj->nr_structs; int nr_unions = obj->nr_unions; int nr_funcs = obj->nr_funcs; + struct btf *base_btf = NULL; int err, type_id; struct btf *btf; __u32 nr_types; - btf = btf__parse(obj->btf ?: obj->path, NULL); + if (obj->base_btf_path) { + base_btf = btf__parse(obj->base_btf_path, NULL); + err = libbpf_get_error(base_btf); + if (err) { + pr_err("FAILED: load base BTF from %s: %s\n", + obj->base_btf_path, strerror(-err)); + return -1; + } + } + + btf = btf__parse_split(obj->btf ?: obj->path, base_btf); err = libbpf_get_error(btf); if (err) { pr_err("FAILED: load BTF from %s: %s\n", obj->btf ?: obj->path, strerror(-err)); - return -1; + goto out; } err = -1; @@ -545,6 +557,7 @@ static int symbols_resolve(struct object *obj) err = 0; out: + btf__free(base_btf); btf__free(btf); return err; } @@ -697,6 +710,8 @@ int main(int argc, const char **argv) "BTF data"), OPT_BOOLEAN(0, "no-fail", &no_fail, "do not fail if " BTF_IDS_SECTION " section is not found"), + OPT_STRING('s', "base-btf", &obj.base_btf_path, "file", + "path of file providing base BTF data"), OPT_END() }; int err = -1; -- 2.33.0