From patchwork Sun Nov 8 05:26:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joelle van Dyne X-Patchwork-Id: 1396265 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=getutm.app 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 ozlabs.org (Postfix) with ESMTPS id 4CTN134v3vz9sSn for ; Sun, 8 Nov 2020 16:27:19 +1100 (AEDT) Received: from localhost ([::1]:50972 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kbdET-0001ao-L1 for incoming@patchwork.ozlabs.org; Sun, 08 Nov 2020 00:27:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42534) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kbdDY-0001Ye-7X; Sun, 08 Nov 2020 00:26:20 -0500 Received: from mail-pf1-f182.google.com ([209.85.210.182]:34551) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kbdDW-0004xI-No; Sun, 08 Nov 2020 00:26:19 -0500 Received: by mail-pf1-f182.google.com with SMTP id o129so5112874pfb.1; Sat, 07 Nov 2020 21:26:17 -0800 (PST) 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=DqK0hZ8mt8LWfTZqV1hfM2y+gt2SV2gfJzd9rHBJS8g=; b=hN5p0J4HLkid8amfNbV2h9E0lquFW9LqgnCLfuGorzhNW5wVtDeoQ6A8Np/XzOILK/ itijVds+O9yhwesj0okktJfyHnGHRa/kvZ4GmYv2VrGcyEpLIDRiYICZWnyMyK+1mizL zSxDg01AYfWb5em2OvrPXDGBhoTv5OhrtSjnJ2BZpV9YqYqdwTGuPhZpMBtFnemDxYEF 0fAB1zRQSttJN5lsfTqrd9TfdPAM0hVcZOyXyQVp+D9zAWtvBGVairUcsXi1HIXrzkIN 7AplDBzzxL+RXdz/zWOyD/zNkdTPzBB/mwd3UKGKAb0DcC+FJU1KDGtTZrhJIMtDg7Yp KaTw== X-Gm-Message-State: AOAM530wPHTUTQPFYkW+FH3d8FS3Uw6F1BnC1iPGTwnbcDqMi9PrCX2j NvNnxXdJtajjZyjapwVcuKqFzOQVTGM= X-Google-Smtp-Source: ABdhPJxs/tKfn73Ob7Zhs5pFo4+/NTK209PI+9+fFtcXaOlmDCkzyOZ/za/DIHoQxh7pqu89I5AlXg== X-Received: by 2002:a65:6649:: with SMTP id z9mr7914138pgv.18.1604813176408; Sat, 07 Nov 2020 21:26:16 -0800 (PST) Received: from localhost.localdomain ([73.93.155.42]) by smtp.gmail.com with ESMTPSA id hz18sm6994406pjb.13.2020.11.07.21.26.15 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 07 Nov 2020 21:26:16 -0800 (PST) From: Joelle van Dyne To: qemu-devel@nongnu.org Subject: [PATCH v4 7/7] block: check availablity for preadv/pwritev on mac Date: Sat, 7 Nov 2020 21:26:05 -0800 Message-Id: <20201108052605.45840-8-j@getutm.app> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201108052605.45840-1-j@getutm.app> References: <20201108052605.45840-1-j@getutm.app> MIME-Version: 1.0 Received-SPF: pass client-ip=209.85.210.182; envelope-from=osy86github@gmail.com; helo=mail-pf1-f182.google.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/08 00:26:16 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 , Joelle van Dyne , "open list:raw" , Max Reitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" macOS 11/iOS 14 added preadv/pwritev APIs. Due to weak linking, configure will succeed with CONFIG_PREADV even when targeting a lower OS version. We therefore need to check at run time if we can actually use these APIs. Signed-off-by: Joelle van Dyne --- block/file-posix.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/block/file-posix.c b/block/file-posix.c index 5560fd20ac..b5a7ce483d 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1394,12 +1394,24 @@ static bool preadv_present = true; static ssize_t qemu_preadv(int fd, const struct iovec *iov, int nr_iov, off_t offset) { +#ifdef CONFIG_DARWIN /* preadv introduced in macOS 11 */ + if (!__builtin_available(macOS 11, iOS 14, watchOS 7, tvOS 14, *)) { + preadv_present = false; + return -ENOSYS; + } else +#endif return preadv(fd, iov, nr_iov, offset); } static ssize_t qemu_pwritev(int fd, const struct iovec *iov, int nr_iov, off_t offset) { +#ifdef CONFIG_DARWIN /* pwritev introduced in macOS 11 */ + if (!__builtin_available(macOS 11, iOS 14, watchOS 7, tvOS 14, *)) { + preadv_present = false; + return -ENOSYS; + } else +#endif return pwritev(fd, iov, nr_iov, offset); }