From patchwork Thu Sep 3 15:22:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 274669 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=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 41415C433E9 for ; Thu, 3 Sep 2020 15:25:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0B5232072A for ; Thu, 3 Sep 2020 15:25:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UP9i2jiJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B5232072A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52012 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kDr7X-0005cn-3H for qemu-devel@archiver.kernel.org; Thu, 03 Sep 2020 11:25:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49308) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kDr4L-00006Q-KW for qemu-devel@nongnu.org; Thu, 03 Sep 2020 11:22:33 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:25051) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kDr4J-000813-Il for qemu-devel@nongnu.org; Thu, 03 Sep 2020 11:22:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599146550; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dWG3F29NuQdM++zSGzyguvFvgwq86vzl492BOIPsLuA=; b=UP9i2jiJBdfLO2Aqm34ZO77K9+fle0v0KwfXceWeV/3mH4czWVs0lqBPAwYhkDogcpDDcd vkQ1wk/cqVrg9T0a8uImsc6WMaMvUJoFxOBERAw+ldS7LYaaL2pqi6PYQoy7+HacTBgGxw aeKfMT0qID1Q0giRaVeuu1ru/5Mtkiw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-362-lMwDL4UqMhab7hxBX1WEDg-1; Thu, 03 Sep 2020 11:22:28 -0400 X-MC-Unique: lMwDL4UqMhab7hxBX1WEDg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 34F3981F000; Thu, 3 Sep 2020 15:22:27 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.36.110.14]) by smtp.corp.redhat.com (Postfix) with ESMTP id F18072D07D; Thu, 3 Sep 2020 15:22:24 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v6 5/8] util: add Error object for qemu_open_internal error reporting Date: Thu, 3 Sep 2020 16:22:07 +0100 Message-Id: <20200903152210.1917355-6-berrange@redhat.com> In-Reply-To: <20200903152210.1917355-1-berrange@redhat.com> References: <20200903152210.1917355-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/03 04:23:54 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , qemu-block@nongnu.org, Markus Armbruster , Max Reitz , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Instead of relying on the limited information from errno, we can now also provide detailed error messages to callers that ask for it. Reviewed-by: Markus Armbruster Signed-off-by: Daniel P. Berrangé --- util/osdep.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/util/osdep.c b/util/osdep.c index 11531e8f59..28aa89adc9 100644 --- a/util/osdep.c +++ b/util/osdep.c @@ -22,6 +22,7 @@ * THE SOFTWARE. */ #include "qemu/osdep.h" +#include "qapi/error.h" /* Needed early for CONFIG_BSD etc. */ @@ -297,7 +298,7 @@ static int qemu_open_cloexec(const char *name, int flags, mode_t mode) * Opens a file with FD_CLOEXEC set */ static int -qemu_open_internal(const char *name, int flags, mode_t mode) +qemu_open_internal(const char *name, int flags, mode_t mode, Error **errp) { int ret; @@ -311,12 +312,15 @@ qemu_open_internal(const char *name, int flags, mode_t mode) fdset_id = qemu_parse_fdset(fdset_id_str); if (fdset_id == -1) { + error_setg(errp, "Could not parse fdset %s", name); errno = EINVAL; return -1; } dupfd = monitor_fdset_dup_fd_add(fdset_id, flags); if (dupfd == -1) { + error_setg_errno(errp, errno, "Could not dup FD for %s flags %x", + name, flags); return -1; } @@ -326,6 +330,13 @@ qemu_open_internal(const char *name, int flags, mode_t mode) ret = qemu_open_cloexec(name, flags, mode); + if (ret == -1) { + const char *action = flags & O_CREAT ? "create" : "open"; + error_setg_errno(errp, errno, "Could not %s '%s'", + action, name); + } + + return ret; } @@ -342,7 +353,7 @@ int qemu_open_old(const char *name, int flags, ...) } va_end(ap); - ret = qemu_open_internal(name, flags, mode); + ret = qemu_open_internal(name, flags, mode, NULL); #ifdef O_DIRECT if (ret == -1 && errno == EINVAL && (flags & O_DIRECT)) {