From patchwork Thu Jun 13 08:48:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13696420 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 405561428F2; Thu, 13 Jun 2024 08:49:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718268553; cv=none; b=aM0wvmDFdJGdgtNa2nYcuh6GdnVjRXRX2UjWAqDY9Hkci+XckUa1w4A9nRo713xWJtEZBm73iYlK619qb7IjiDVqMWEgO/U7MrhBV/FE8cG09yAJZVn22TfHZ9NSCcMR/mF/aE9gDtQ119TSyUt5Oz/Qqo81IcYE5rAAjt/E1JE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718268553; c=relaxed/simple; bh=FmtxdkCNtQTCGgmgxOQ9OCDaPcUZUNNpBwNIz/AnRsE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VQogGAdGEFI3DpKG2zvI7dSeEFEaOCLQW1bMphrSFaJb9NJ3IjUz5Is0gS+MXGed7vAd8I6gYmPTgcASMhykJr2gQxMhm7c3DuINllVxpeVwLwnj0iZvqrpuKC2o+v/yCQBiyDfi7qZJhsretdRFDK667iyJvv/JkQr03M31+xg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=VKrnBhos; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="VKrnBhos" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=vQb3U/bV54yLHMnuTsiHBSf7xNhCnQOB1ATjVIIrVHA=; b=VKrnBhos1DKBvHoaiaVx8RihFq 6zPgjLf40QnMS+mQvpy8bvG+IJzyi0Gw0Oy8SPPp9CX8AM8/ILHdy/cg9IUWQh2ZFIHG/UE7wGTu2 OkNXcWcC4DPHUj0KFvkhn9AgqjJvhc3fEA9C12r1AjkWdicIZbApDJKJzBE0018I+VOWb6wZmwOQJ exC2X6ZyH/ahxeymL54tj2bn9VPzBoIDRs/QG2YZKYb8NbtRzG+hWKKOPXhjYb+occ4IqIuPcC0Ou eWIDG8zEZxiDOjvYlyh0/LY8laNx0Va+y5Z2wBark2Zhr0GxiigxSNxthoLvti/sTWBDXrD3NyZwK zx9ZBqaQ==; Received: from 2a02-8389-2341-5b80-034b-6bc2-b258-c831.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:34b:6bc2:b258:c831] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHg8n-0000000FnE8-07lW; Thu, 13 Jun 2024 08:49:05 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 08/12] block: use kstrtoul in flag_store Date: Thu, 13 Jun 2024 10:48:18 +0200 Message-ID: <20240613084839.1044015-9-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240613084839.1044015-1-hch@lst.de> References: <20240613084839.1044015-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Use the text to integer helper that has error handling and doesn't modify the input pointer. Signed-off-by: Christoph Hellwig Reviewed-by: Keith Busch Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Reviewed-by: Kanchan Joshi --- block/blk-integrity.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 24671d9f90a124..58760a6d6b2209 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -247,8 +247,12 @@ static ssize_t flag_store(struct device *dev, struct device_attribute *attr, const char *page, size_t count, unsigned char flag) { struct blk_integrity *bi = dev_to_bi(dev); - char *p = (char *) page; - unsigned long val = simple_strtoul(p, &p, 10); + unsigned long val; + int err; + + err = kstrtoul(page, 10, &val); + if (err) + return err; if (val) bi->flags |= flag;