From patchwork Tue May 7 18:05:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 13657529 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 BEF36C10F1A for ; Tue, 7 May 2024 18:07:09 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s4PCd-0006iX-7D; Tue, 07 May 2024 14:06:11 -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 1s4PCa-0006hQ-Es for qemu-devel@nongnu.org; Tue, 07 May 2024 14:06:08 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s4PCX-0005pi-Tt for qemu-devel@nongnu.org; Tue, 07 May 2024 14:06:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1715105164; 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; bh=+UjO/ht9tVlihuhzYU+Y1fKToV8y7egqHaB0TByGeBY=; b=i9jb78ih8x3BYh8IYfActOrsz3aylgDHf97cudBJfmvo5o+1iNei7R9PRiZNU1ze2WEKBW CTPr8FS11wbj1+cIGiOZ8wPXS7Qw4aV74VZOpYoWlFk2+s1QqgT5bigTs33Y5G7e2viLqY yTnDRBRxkCqWDyd9HtEK6C64e6viNgU= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-94-xlR28XOMO9a6guFqQnSyFQ-1; Tue, 07 May 2024 14:06:01 -0400 X-MC-Unique: xlR28XOMO9a6guFqQnSyFQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E937029AC009; Tue, 7 May 2024 18:06:00 +0000 (UTC) Received: from localhost (unknown [10.39.192.114]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1D917200AF76; Tue, 7 May 2024 18:05:59 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Cc: , Peter Maydell , Kevin Wolf , Hanna Reitz , Stefan Hajnoczi , Sam Li Subject: [PATCH] qemu-io: add cvtnum() error handling for zone commands Date: Tue, 7 May 2024 14:05:58 -0400 Message-ID: <20240507180558.377233-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.581, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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 cvtnum() parses positive int64_t values and returns a negative errno on failure. Print errors and return early when cvtnum() fails. While we're at it, also reject nr_zones values greater or equal to 2^32 since they cannot be represented. Reported-by: Peter Maydell Cc: Sam Li Signed-off-by: Stefan Hajnoczi Reviewed-by: Sam Li --- qemu-io-cmds.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index f5d7202a13..e2fab57183 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -1739,12 +1739,26 @@ static int zone_report_f(BlockBackend *blk, int argc, char **argv) { int ret; int64_t offset; + int64_t val; unsigned int nr_zones; ++optind; offset = cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; - nr_zones = cvtnum(argv[optind]); + val = cvtnum(argv[optind]); + if (val < 0) { + print_cvtnum_err(val, argv[optind]); + return val; + } + if (val > UINT_MAX) { + printf("Number of zones must be less than 2^32\n"); + return -ERANGE; + } + nr_zones = val; g_autofree BlockZoneDescriptor *zones = NULL; zones = g_new(BlockZoneDescriptor, nr_zones); @@ -1780,8 +1794,16 @@ static int zone_open_f(BlockBackend *blk, int argc, char **argv) int64_t offset, len; ++optind; offset = cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len = cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret = blk_zone_mgmt(blk, BLK_ZO_OPEN, offset, len); if (ret < 0) { printf("zone open failed: %s\n", strerror(-ret)); @@ -1805,8 +1827,16 @@ static int zone_close_f(BlockBackend *blk, int argc, char **argv) int64_t offset, len; ++optind; offset = cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len = cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret = blk_zone_mgmt(blk, BLK_ZO_CLOSE, offset, len); if (ret < 0) { printf("zone close failed: %s\n", strerror(-ret)); @@ -1830,8 +1860,16 @@ static int zone_finish_f(BlockBackend *blk, int argc, char **argv) int64_t offset, len; ++optind; offset = cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len = cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret = blk_zone_mgmt(blk, BLK_ZO_FINISH, offset, len); if (ret < 0) { printf("zone finish failed: %s\n", strerror(-ret)); @@ -1855,8 +1893,16 @@ static int zone_reset_f(BlockBackend *blk, int argc, char **argv) int64_t offset, len; ++optind; offset = cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len = cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret = blk_zone_mgmt(blk, BLK_ZO_RESET, offset, len); if (ret < 0) { printf("zone reset failed: %s\n", strerror(-ret));