From patchwork Thu Jun 9 15:27:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Faria X-Patchwork-Id: 1641370 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=FBmszSsb; dkim-atps=neutral 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=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4LJqfC268nz9s5V for ; Fri, 10 Jun 2022 02:43:15 +1000 (AEST) Received: from localhost ([::1]:48208 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nzLFY-0000gz-Uh for incoming@patchwork.ozlabs.org; Thu, 09 Jun 2022 12:43:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54866) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nzK52-0008EM-TI for qemu-devel@nongnu.org; Thu, 09 Jun 2022 11:28:21 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:45346) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nzK50-0000tc-B1 for qemu-devel@nongnu.org; Thu, 09 Jun 2022 11:28:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1654788493; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L/6cm83sT/Sd7jO/HJV0ZsENGnOydcF8BraJHY781uI=; b=FBmszSsbjlOk2GD0ZbD0qaZZgQgay6I6b/CKfDiVhnUQkSGxJwVs52f5y1kFwZzAngFfWS n7F44/O2UFtXQyzi7j1pYOqFsVi1MY8NST0wOJ24+nOIiDsCnhw9oRpQRLkQug74v4dpLO qwKXU63Bs0y0fuEaTmACIgNPZ8pCv4U= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-391-9bO5idf8MUObnDvbioVwWQ-1; Thu, 09 Jun 2022 11:28:09 -0400 X-MC-Unique: 9bO5idf8MUObnDvbioVwWQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3C3BD804194; Thu, 9 Jun 2022 15:28:09 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.39.192.8]) by smtp.corp.redhat.com (Postfix) with ESMTP id 914EC492C3B; Thu, 9 Jun 2022 15:28:06 +0000 (UTC) From: Alberto Faria To: qemu-devel@nongnu.org Cc: John Snow , Kevin Wolf , Eric Blake , Stefan Hajnoczi , Ari Sundholm , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Denis V. Lunev" , Fam Zheng , Jeff Cody , qemu-block@nongnu.org, Vladimir Sementsov-Ogievskiy , Hanna Reitz , Stefan Weil , Alberto Faria Subject: [PATCH v5 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t Date: Thu, 9 Jun 2022 16:27:40 +0100 Message-Id: <20220609152744.3891847-7-afaria@redhat.com> In-Reply-To: <20220609152744.3891847-1-afaria@redhat.com> References: <20220609152744.3891847-1-afaria@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=afaria@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" For consistency with other I/O functions, and in preparation to implement bdrv_{pread,pwrite}() using generated_co_wrapper. unsigned int fits in int64_t, so all callers remain correct. bdrv_check_request32() is called further down the stack and causes -EIO to be returned if 'bytes' is negative or greater than BDRV_REQUEST_MAX_BYTES, which in turns never exceeds SIZE_MAX. Signed-off-by: Alberto Faria Reviewed-by: Eric Blake Reviewed-by: Hanna Reitz --- block/coroutines.h | 4 ++-- include/block/block_int-io.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/block/coroutines.h b/block/coroutines.h index 830ecaa733..3f41238b33 100644 --- a/block/coroutines.h +++ b/block/coroutines.h @@ -91,11 +91,11 @@ int coroutine_fn blk_co_do_flush(BlockBackend *blk); */ int generated_co_wrapper -bdrv_preadv(BdrvChild *child, int64_t offset, unsigned int bytes, +bdrv_preadv(BdrvChild *child, int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags); int generated_co_wrapper -bdrv_pwritev(BdrvChild *child, int64_t offset, unsigned int bytes, +bdrv_pwritev(BdrvChild *child, int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags); int generated_co_wrapper diff --git a/include/block/block_int-io.h b/include/block/block_int-io.h index d4d3bed783..d1a6970dc6 100644 --- a/include/block/block_int-io.h +++ b/include/block/block_int-io.h @@ -56,7 +56,7 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child, QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags); static inline int coroutine_fn bdrv_co_pread(BdrvChild *child, - int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags) + int64_t offset, int64_t bytes, void *buf, BdrvRequestFlags flags) { QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); IO_CODE(); @@ -65,7 +65,7 @@ static inline int coroutine_fn bdrv_co_pread(BdrvChild *child, } static inline int coroutine_fn bdrv_co_pwrite(BdrvChild *child, - int64_t offset, unsigned int bytes, const void *buf, BdrvRequestFlags flags) + int64_t offset, int64_t bytes, const void *buf, BdrvRequestFlags flags) { QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); IO_CODE();