From nobody Tue Nov 4 16:10:22 2025 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.zohomail.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 1504092919838733.4307359591293; Wed, 30 Aug 2017 04:35:19 -0700 (PDT) Received: from localhost ([::1]:49791 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dn1HB-0007i2-MN for importer@patchew.org; Wed, 30 Aug 2017 07:35:17 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52878) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dn1Fh-0006nW-Ng for qemu-devel@nongnu.org; Wed, 30 Aug 2017 07:33:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dn1Fg-0007zL-M7 for qemu-devel@nongnu.org; Wed, 30 Aug 2017 07:33:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42934) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dn1Fg-0007yt-Ch for qemu-devel@nongnu.org; Wed, 30 Aug 2017 07:33:44 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 64C4920B17 for ; Wed, 30 Aug 2017 11:33:43 +0000 (UTC) Received: from secure.mitica (ovpn-117-188.ams2.redhat.com [10.36.117.188]) by smtp.corp.redhat.com (Postfix) with ESMTP id A9D41708F6; Wed, 30 Aug 2017 11:33:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 64C4920B17 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=quintela@redhat.com From: Juan Quintela To: qemu-devel@nongnu.org Date: Wed, 30 Aug 2017 13:33:18 +0200 Message-Id: <20170830113319.6749-2-quintela@redhat.com> In-Reply-To: <20170830113319.6749-1-quintela@redhat.com> References: <20170830113319.6749-1-quintela@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 30 Aug 2017 11:33:43 +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 v2 1/2] tests: Use real size for iov tests 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: lvivier@redhat.com, pbonzini@redhat.com, dgilbert@redhat.com, peterx@redhat.com 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" We were using -1 instead of the real size because the functions check what is bigger, size in bytes or the size of the iov. Recent gcc's barf at this. Signed-off-by: Juan Quintela -- Remove comments about this feature. Fix missing -1. Tested-by: Cleber Rosa --- include/qemu/iov.h | 6 ------ tests/test-iov.c | 10 +++++----- 2 files changed, 5 insertions(+), 11 deletions(-) diff --git a/include/qemu/iov.h b/include/qemu/iov.h index bd9fd55b0a..72d4c559b4 100644 --- a/include/qemu/iov.h +++ b/include/qemu/iov.h @@ -31,11 +31,6 @@ size_t iov_size(const struct iovec *iov, const unsigned = int iov_cnt); * Number of bytes actually copied will be returned, which is * min(bytes, iov_size(iov)-offset) * `Offset' must point to the inside of iovec. - * It is okay to use very large value for `bytes' since we're - * limited by the size of the iovec anyway, provided that the - * buffer pointed to by buf has enough space. One possible - * such "large" value is -1 (sinice size_t is unsigned), - * so specifying `-1' as `bytes' means 'up to the end of iovec'. */ size_t iov_from_buf_full(const struct iovec *iov, unsigned int iov_cnt, size_t offset, const void *buf, size_t bytes); @@ -76,7 +71,6 @@ iov_to_buf(const struct iovec *iov, const unsigned int io= v_cnt, * up to the end of it, will be filled with the specified value. * Function return actual number of bytes processed, which is * min(size, iov_size(iov) - offset). - * Again, it is okay to use large value for `bytes' to mean "up to the end= ". */ size_t iov_memset(const struct iovec *iov, const unsigned int iov_cnt, size_t offset, int fillc, size_t bytes); diff --git a/tests/test-iov.c b/tests/test-iov.c index a22d71fd2c..f40f8f5260 100644 --- a/tests/test-iov.c +++ b/tests/test-iov.c @@ -81,17 +81,17 @@ static void test_to_from_buf_1(void) * skip whole vector and process exactly 0 bytes */ =20 /* first set bytes [i..sz) to some "random" value */ - n =3D iov_memset(iov, niov, 0, 0xff, -1); + n =3D iov_memset(iov, niov, 0, 0xff, sz); g_assert(n =3D=3D sz); =20 /* next copy bytes [i..sz) from ibuf to iovec */ - n =3D iov_from_buf(iov, niov, i, ibuf + i, -1); + n =3D iov_from_buf(iov, niov, i, ibuf + i, sz - i); g_assert(n =3D=3D sz - i); =20 /* clear part of obuf */ memset(obuf + i, 0, sz - i); /* and set this part of obuf to values from iovec */ - n =3D iov_to_buf(iov, niov, i, obuf + i, -1); + n =3D iov_to_buf(iov, niov, i, obuf + i, sz - i); g_assert(n =3D=3D sz - i); =20 /* now compare resulting buffers */ @@ -109,7 +109,7 @@ static void test_to_from_buf_1(void) * with j in [i..sz]. */ =20 /* clear iovec */ - n =3D iov_memset(iov, niov, 0, 0xff, -1); + n =3D iov_memset(iov, niov, 0, 0xff, sz); g_assert(n =3D=3D sz); =20 /* copy bytes [i..j) from ibuf to iovec */ @@ -226,7 +226,7 @@ static void test_io(void) for (i =3D 0; i <=3D sz; ++i) { for (j =3D i; j <=3D sz; ++j) { k =3D i; - iov_memset(iov, niov, 0, 0xff, -1); + iov_memset(iov, niov, 0, 0xff, sz); do { s =3D g_test_rand_int_range(0, j - k + 1); r =3D iov_recv(sv[0], iov, niov, k, s); --=20 2.13.5