From nobody Tue Feb 10 12:58:16 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1495818426916418.58780956700184; Fri, 26 May 2017 10:07:06 -0700 (PDT) Received: from localhost ([::1]:37665 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dEIhc-0001kD-I4 for importer@patchew.org; Fri, 26 May 2017 13:07:04 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dEIWw-0008Ql-Sm for qemu-devel@nongnu.org; Fri, 26 May 2017 12:56:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dEIWw-0003iI-5S for qemu-devel@nongnu.org; Fri, 26 May 2017 12:56:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47970) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dEIWr-0003fL-Gd; Fri, 26 May 2017 12:55:57 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 68C40C057FA6; Fri, 26 May 2017 16:55:56 +0000 (UTC) Received: from localhost (unknown [10.40.205.98]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D43F67F49B; Fri, 26 May 2017 16:55:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 68C40C057FA6 Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=mreitz@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 68C40C057FA6 From: Max Reitz To: qemu-block@nongnu.org Date: Fri, 26 May 2017 18:55:10 +0200 Message-Id: <20170526165518.7580-9-mreitz@redhat.com> In-Reply-To: <20170526165518.7580-1-mreitz@redhat.com> References: <20170526165518.7580-1-mreitz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 26 May 2017 16:55:56 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v3 08/16] block/file-posix: Preallocation for truncate X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-devel@nongnu.org, Stefan Hajnoczi , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" By using raw_regular_truncate() in raw_truncate(), we can now easily support preallocation. Signed-off-by: Max Reitz Reviewed-by: Stefan Hajnoczi --- block/file-posix.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index e38c226..0f51596 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1750,12 +1750,6 @@ static int raw_truncate(BlockDriverState *bs, int64_= t offset, struct stat st; int ret; =20 - if (prealloc !=3D PREALLOC_MODE_OFF) { - error_setg(errp, "Unsupported preallocation mode '%s'", - PreallocMode_lookup[prealloc]); - return -ENOTSUP; - } - if (fstat(s->fd, &st)) { ret =3D -errno; error_setg_errno(errp, -ret, "Failed to fstat() the file"); @@ -1763,12 +1757,16 @@ static int raw_truncate(BlockDriverState *bs, int64= _t offset, } =20 if (S_ISREG(st.st_mode)) { - if (ftruncate(s->fd, offset) < 0) { - ret =3D -errno; - error_setg_errno(errp, -ret, "Failed to resize the file"); - return ret; - } - } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { + return raw_regular_truncate(s->fd, offset, prealloc, errp); + } + + if (prealloc !=3D PREALLOC_MODE_OFF) { + error_setg(errp, "Preallocation mode '%s' unsupported for this " + "non-regular file", PreallocMode_lookup[prealloc]); + return -ENOTSUP; + } + + if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { if (offset > raw_getlength(bs)) { error_setg(errp, "Cannot grow device files"); return -EINVAL; --=20 2.9.4