From patchwork Mon May 22 19:04:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 13250968 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E406EC77B73 for ; Mon, 22 May 2023 19:11:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q1Aqz-0003qw-0O; Mon, 22 May 2023 15:05:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q1AqA-0003dY-NC for qemu-devel@nongnu.org; Mon, 22 May 2023 15:05:07 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q1Aq1-0003cP-JZ for qemu-devel@nongnu.org; Mon, 22 May 2023 15:05:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1684782295; 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=8cJzwJZ4zdGIq/I0J9calmLyGZPx++hERjNy8PReoLw=; b=CDhVZ4RP+cW/+aYJYVahIxTyRHBdPCR2/5Yt+2ZEBA5u4K/zC2S0QBP7K0pO3N/ppjvl27 DZBQe30mwuA5ys6lix3d0icRsMC7Eml8AbJhsONtuhkmlcMjK5gW5mOE4es/4gnkgG6lSI oWK/vf0yuy2S+cmsDWaHv4XvsWi2W30= 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-435-vAtI3MElMRSGwZwzaz8xDg-1; Mon, 22 May 2023 15:04:54 -0400 X-MC-Unique: vAtI3MElMRSGwZwzaz8xDg-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 03924101A53B; Mon, 22 May 2023 19:04:54 +0000 (UTC) Received: from green.redhat.com (unknown [10.2.16.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 95747400DFF; Mon, 22 May 2023 19:04:53 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Cc: hreitz@redhat.com, qemu-block@nongnu.org, Kevin Wolf Subject: [PATCH v3 17/19] cutils: Use parse_uint in qemu_strtosz for negative rejection Date: Mon, 22 May 2023 14:04:39 -0500 Message-Id: <20230522190441.64278-18-eblake@redhat.com> In-Reply-To: <20230522190441.64278-1-eblake@redhat.com> References: <20230522190441.64278-1-eblake@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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_H2=-0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Rather than open-coding two different ways to check for an unwanted negative sign, reuse the same code in both functions. That way, if we decide down the road to accept "-0" instead of rejecting it, we have fewer places to change. Also, it means we now get ERANGE instead of EINVAL for negative values in qemu_strtosz, which is reasonable for what it represents. This in turn changes the expected output of a couple of iotests. The change is not quite complete: negative fractional scaled values can trip us up. This will be fixed in a later patch addressing other issues with fractional scaled values. Signed-off-by: Eric Blake Reviewed-by: Hanna Czenczek --- v3: also fix iotests, commit message tweaked, R-b added --- tests/unit/test-cutils.c | 7 +++---- util/cutils.c | 8 ++------ tests/qemu-iotests/049.out | 7 ++----- tests/qemu-iotests/178.out.qcow2 | 3 +-- tests/qemu-iotests/178.out.raw | 3 +-- 5 files changed, 9 insertions(+), 19 deletions(-) diff --git a/tests/unit/test-cutils.c b/tests/unit/test-cutils.c index adc9878f93d..8bdae856827 100644 --- a/tests/unit/test-cutils.c +++ b/tests/unit/test-cutils.c @@ -3519,10 +3519,9 @@ static void test_qemu_strtosz_trailing(void) static void test_qemu_strtosz_erange(void) { /* FIXME negative values fit better as ERANGE */ - do_strtosz(" -0", -EINVAL /* FIXME -ERANGE */, 0, 0 /* FIXME 3 */); - do_strtosz("-1", -EINVAL /* FIXME -ERANGE */, 0, 0 /* FIXME 2 */); - do_strtosz_full("-2M", qemu_strtosz, -EINVAL /* FIXME -ERANGE */, 0, - 0 /* FIXME 2 */, -EINVAL, 0); + do_strtosz(" -0", -ERANGE, 0, 3); + do_strtosz("-1", -ERANGE, 0, 2); + do_strtosz_full("-2M", qemu_strtosz, -ERANGE, 0, 2, -EINVAL, 0); do_strtosz(" -.0", -EINVAL /* FIXME -ERANGE */, 0, 0 /* FIXME 4 */); do_strtosz_full("-.1k", qemu_strtosz, -EINVAL /* FIXME -ERANGE */, 0, 0 /* FIXME 3 */, -EINVAL, 0); diff --git a/util/cutils.c b/util/cutils.c index edfb71a2171..e3a49209a94 100644 --- a/util/cutils.c +++ b/util/cutils.c @@ -201,6 +201,7 @@ static int64_t suffix_mul(char suffix, int64_t unit) * - hex with scaling suffix, such as 0x20M * - octal, such as 08 * - fractional hex, such as 0x1.8 + * - negative values, including -0 * - floating point exponents, such as 1e3 * * The end pointer will be returned in *end, if not NULL. If there is @@ -226,15 +227,10 @@ static int do_strtosz(const char *nptr, const char **end, int64_t mul; /* Parse integral portion as decimal. */ - retval = qemu_strtou64(nptr, &endptr, 10, &val); + retval = parse_uint(nptr, &endptr, 10, &val); if (retval) { goto out; } - if (memchr(nptr, '-', endptr - nptr) != NULL) { - endptr = nptr; - retval = -EINVAL; - goto out; - } if (val == 0 && (*endptr == 'x' || *endptr == 'X')) { /* Input looks like hex; reparse, and insist on no fraction or suffix. */ retval = qemu_strtou64(nptr, &endptr, 16, &val); diff --git a/tests/qemu-iotests/049.out b/tests/qemu-iotests/049.out index 8719c91b483..34e1b452e6e 100644 --- a/tests/qemu-iotests/049.out +++ b/tests/qemu-iotests/049.out @@ -92,13 +92,10 @@ Formatting 'TEST_DIR/t.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off comp == 3. Invalid sizes == qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- -1024 -qemu-img: Invalid image size specified. You may use k, M, G, T, P or E suffixes for -qemu-img: kilobytes, megabytes, gigabytes, terabytes, petabytes and exabytes. +qemu-img: Invalid image size specified. Must be between 0 and 9223372036854775807. qemu-img create -f qcow2 -o size=-1024 TEST_DIR/t.qcow2 -qemu-img: TEST_DIR/t.qcow2: Parameter 'size' expects a non-negative number below 2^64 -Optional suffix k, M, G, T, P or E means kilo-, mega-, giga-, tera-, peta- -and exabytes, respectively. +qemu-img: TEST_DIR/t.qcow2: Value '-1024' is out of range for parameter 'size' qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- -1k qemu-img: Invalid image size specified. You may use k, M, G, T, P or E suffixes for diff --git a/tests/qemu-iotests/178.out.qcow2 b/tests/qemu-iotests/178.out.qcow2 index 0d51fe401ec..fe193fd5f4f 100644 --- a/tests/qemu-iotests/178.out.qcow2 +++ b/tests/qemu-iotests/178.out.qcow2 @@ -13,8 +13,7 @@ qemu-img: Invalid option list: , qemu-img: Invalid parameter 'snapshot.foo' qemu-img: Failed in parsing snapshot param 'snapshot.foo=bar' qemu-img: --output must be used with human or json as argument. -qemu-img: Invalid image size specified. You may use k, M, G, T, P or E suffixes for -qemu-img: kilobytes, megabytes, gigabytes, terabytes, petabytes and exabytes. +qemu-img: Invalid image size specified. Must be between 0 and 9223372036854775807. qemu-img: Unknown file format 'foo' == Size calculation for a new file (human) == diff --git a/tests/qemu-iotests/178.out.raw b/tests/qemu-iotests/178.out.raw index 116241ddef2..445e460fad9 100644 --- a/tests/qemu-iotests/178.out.raw +++ b/tests/qemu-iotests/178.out.raw @@ -13,8 +13,7 @@ qemu-img: Invalid option list: , qemu-img: Invalid parameter 'snapshot.foo' qemu-img: Failed in parsing snapshot param 'snapshot.foo=bar' qemu-img: --output must be used with human or json as argument. -qemu-img: Invalid image size specified. You may use k, M, G, T, P or E suffixes for -qemu-img: kilobytes, megabytes, gigabytes, terabytes, petabytes and exabytes. +qemu-img: Invalid image size specified. Must be between 0 and 9223372036854775807. qemu-img: Unknown file format 'foo' == Size calculation for a new file (human) ==