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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 559C8C433EF for ; Fri, 28 Jan 2022 22:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350593AbiA1Wdg (ORCPT ); Fri, 28 Jan 2022 17:33:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351711AbiA1Wdf (ORCPT ); Fri, 28 Jan 2022 17:33:35 -0500 Received: from mail-qv1-xf2e.google.com (mail-qv1-xf2e.google.com [IPv6:2607:f8b0:4864:20::f2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B46FAC06173B for ; Fri, 28 Jan 2022 14:33:35 -0800 (PST) Received: by mail-qv1-xf2e.google.com with SMTP id k9so7193451qvv.9 for ; Fri, 28 Jan 2022 14:33:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kinvolk.io; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=U3syY77hha9Bbw40vEq8V9D9lekN0Rz7UjL/7rtB8AY=; b=lqqdL2FwfmUENMe5AZoc/qF13pU0r6WZW0sXTEjRFuJKZzkI15x/T3SEZw9Md+bi3d OWwTWtmPz2G5mtPW2gQxG3frAcDbJN5UdZfPHn87AUpdLE5o+e2b8qdH/462j10mLCZ6 1yEPo6CisQRfbHxzxVGaVaQLd4LyPR52kFrh8= 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=U3syY77hha9Bbw40vEq8V9D9lekN0Rz7UjL/7rtB8AY=; b=nFIiS6er1Fa7y5JkMz4gYyLjX9GQepSRonRwhK3YqcCkojNXXjMbPxvNm28SKFbn33 VOijbknOwg47g7LwcCqqiBcPzuOaBNa0FjV5byXkL8X0XHRrQiFNP1ID3ctj0zCgSl/K 8vk19ly/5tMVaMxuM377dg9AQ4RAJXROFagornsrwOvuqnCupBR7ktNWmq/9OjOr25Go NJENoBslS34SgCu5m60ZQ+CCq55fCNniH/iL49m0kVIjFHwzNzE97qREKZ8noszcsAeb qCU0TMpXMcrrW0MV3/ypb94ZtkuKeFUVSgnuN5X7G8Ar3kjQ01V1mEv7/Rr5TNIM29ok BofQ== X-Gm-Message-State: AOAM53385S7sr4HCJxGWGfgSG6wP59efYlaPhp0801yZ+6VekonoWWu9 awVOpWzKUKCneGD1QWrgGlijGg== X-Google-Smtp-Source: ABdhPJyI25MCaN7aVOxWm+JYxtvyFSN2GdYNxVdqO1+Ldl69N/4N2BGXZYE0nh5ne0IAUEp2gxQIGg== X-Received: by 2002:a05:6214:e6c:: with SMTP id jz12mr9307330qvb.47.1643409214177; Fri, 28 Jan 2022 14:33:34 -0800 (PST) Received: from localhost.localdomain ([181.136.110.101]) by smtp.gmail.com with ESMTPSA id i18sm3723972qka.80.2022.01.28.14.33.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Jan 2022 14:33:33 -0800 (PST) From: =?UTF-8?q?Mauricio=20V=C3=A1squez?= To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Quentin Monnet , Rafael David Tinoco , Lorenzo Fontana , Leonardo Di Donato Subject: [PATCH bpf-next v5 3/9] bpftool: Implement btf_save_raw() Date: Fri, 28 Jan 2022 17:33:06 -0500 Message-Id: <20220128223312.1253169-4-mauricio@kinvolk.io> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220128223312.1253169-1-mauricio@kinvolk.io> References: <20220128223312.1253169-1-mauricio@kinvolk.io> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Helper function to save a BTF object to a file. Signed-off-by: Mauricio Vásquez Signed-off-by: Rafael David Tinoco Signed-off-by: Lorenzo Fontana Signed-off-by: Leonardo Di Donato --- tools/bpf/bpftool/gen.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c index 7db31b0f265f..64371f466fa6 100644 --- a/tools/bpf/bpftool/gen.c +++ b/tools/bpf/bpftool/gen.c @@ -1096,6 +1096,28 @@ static int do_help(int argc, char **argv) return 0; } +static int btf_save_raw(const struct btf *btf, const char *path) +{ + const void *data; + FILE *f = NULL; + __u32 data_sz; + int err = 0; + + data = btf__raw_data(btf, &data_sz); + if (!data) + return -ENOMEM; + + f = fopen(path, "wb"); + if (!f) + return -errno; + + if (fwrite(data, 1, data_sz, f) != data_sz) + err = -errno; + + fclose(f); + return err; +} + /* Create BTF file for a set of BPF objects */ static int btfgen(const char *src_btf, const char *dst_btf, const char *objspaths[]) { -- 2.25.1