From patchwork Thu Jun 20 23:09:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrii Nakryiko X-Patchwork-Id: 1119876 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="bckAbCJK"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45VHbZ6hpDz9s7h for ; Fri, 21 Jun 2019 09:10:18 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725985AbfFTXKS (ORCPT ); Thu, 20 Jun 2019 19:10:18 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:15502 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725815AbfFTXKR (ORCPT ); Thu, 20 Jun 2019 19:10:17 -0400 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5KN9L9t026882 for ; Thu, 20 Jun 2019 16:10:17 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=eqtrz4MZzZORZdr9zndzJnKMl94lTWPr73zQtJ0dS18=; b=bckAbCJKWm+GCM3Su0C/vofy/wQySlrVJExszLtPl5GZiosAx9Hb1/rKhivXlA2kHUwU VuG/MkEIFF1/M0GcMSvnu+JC6UwtlIbX1NaWGrL76cxUDJ2h47h+uUKeL39UeKWD8kIv hh2l4C1H0RwPSBVf8SRWhiozYbZLKKDbOug= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2t8eru13ep-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 20 Jun 2019 16:10:16 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::125) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Thu, 20 Jun 2019 16:10:15 -0700 Received: by dev101.prn2.facebook.com (Postfix, from userid 137359) id 2FD0F86173D; Thu, 20 Jun 2019 16:10:14 -0700 (PDT) Smtp-Origin-Hostprefix: dev From: Andrii Nakryiko Smtp-Origin-Hostname: dev101.prn2.facebook.com To: , , , , , CC: Andrii Nakryiko Smtp-Origin-Cluster: prn2c23 Subject: [PATCH bpf-next 1/7] libbpf: make libbpf_strerror_r agnostic to sign of error Date: Thu, 20 Jun 2019 16:09:45 -0700 Message-ID: <20190620230951.3155955-2-andriin@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190620230951.3155955-1-andriin@fb.com> References: <20190620230951.3155955-1-andriin@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-20_15:, , signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=739 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906200164 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org It's often inconvenient to switch sign of error when passing it into libbpf_strerror_r. It's better for it to handle that automatically. Signed-off-by: Andrii Nakryiko --- tools/lib/bpf/str_error.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/bpf/str_error.c b/tools/lib/bpf/str_error.c index 00e48ac5b806..b8064eedc177 100644 --- a/tools/lib/bpf/str_error.c +++ b/tools/lib/bpf/str_error.c @@ -11,7 +11,7 @@ */ char *libbpf_strerror_r(int err, char *dst, int len) { - int ret = strerror_r(err, dst, len); + int ret = strerror_r(err < 0 ? -err : err, dst, len); if (ret) snprintf(dst, len, "ERROR: strerror_r(%d)=%d", err, ret); return dst;