From patchwork Sat Apr 21 00:41:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Masney X-Patchwork-Id: 10353921 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C402B602B1 for ; Sat, 21 Apr 2018 00:44:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B67FB288B8 for ; Sat, 21 Apr 2018 00:44:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A95E8288BF; Sat, 21 Apr 2018 00:44:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 29CE3288B8 for ; Sat, 21 Apr 2018 00:44:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753323AbeDUAn2 (ORCPT ); Fri, 20 Apr 2018 20:43:28 -0400 Received: from onstation.org ([52.200.56.107]:49882 "EHLO onstation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752644AbeDUAmN (ORCPT ); Fri, 20 Apr 2018 20:42:13 -0400 Received: from xilitla.hsd1.wv.comcast.net (c-98-236-77-125.hsd1.wv.comcast.net [98.236.77.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: masneyb) by onstation.org (Postfix) with ESMTPSA id DD0BD1959; Sat, 21 Apr 2018 00:42:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=onstation.org; s=default; t=1524271333; bh=5JGgXY++2/vemZaX7ypMIO7XYcff0s3LDKNF4bpwf9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l3i6mRU9hYqzRNb2AqBF47Cgn6IlLR3utcCVBblcJBgnBuX8xgpihfL5pgttboRd0 zppwpNeqb9WO9LXGkvIONl5F9mwloMOXojy4eMCUIdGosmo69c9vd5wYWfHL2pYbLf KE1NQDD8T8x2vZ96INmWU+oLpaPD/uBk9c1r6Phg= From: Brian Masney To: jic23@kernel.org, linux-iio@vger.kernel.org Cc: gregkh@linuxfoundation.org, devel@driverdev.osuosl.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, linux-kernel@vger.kernel.org, Jon.Brenner@ams.com Subject: [PATCH 08/13] staging: iio: tsl2x7x: add range checking to three sysfs attributes Date: Fri, 20 Apr 2018 20:41:48 -0400 Message-Id: <20180421004153.19073-9-masneyb@onstation.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180421004153.19073-1-masneyb@onstation.org> References: <20180421004153.19073-1-masneyb@onstation.org> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The sysfs attributes in_illuminance0_target_input, in_illuminance0_calibrate, and in_proximity0_calibrate did not have proper range checking in place so this patch adds the correct range checks. Signed-off-by: Brian Masney --- drivers/staging/iio/light/tsl2x7x.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c index 56730baea927..15bc0af1bb6c 100644 --- a/drivers/staging/iio/light/tsl2x7x.c +++ b/drivers/staging/iio/light/tsl2x7x.c @@ -835,9 +835,10 @@ static ssize_t in_illuminance0_target_input_store(struct device *dev, if (kstrtoul(buf, 0, &value)) return -EINVAL; - if (value) - chip->settings.als_cal_target = value; + if (value < 0 || value > 65535) + return -ERANGE; + chip->settings.als_cal_target = value; ret = tsl2x7x_invoke_change(indio_dev); if (ret < 0) return ret; @@ -853,14 +854,12 @@ static ssize_t in_illuminance0_calibrate_store(struct device *dev, bool value; int ret; - if (strtobool(buf, &value)) + if (kstrtobool(buf, &value) || !value) return -EINVAL; - if (value) { - ret = tsl2x7x_als_calibrate(indio_dev); - if (ret < 0) - return ret; - } + ret = tsl2x7x_als_calibrate(indio_dev); + if (ret < 0) + return ret; ret = tsl2x7x_invoke_change(indio_dev); if (ret < 0) @@ -946,14 +945,12 @@ static ssize_t in_proximity0_calibrate_store(struct device *dev, bool value; int ret; - if (strtobool(buf, &value)) + if (kstrtobool(buf, &value) || !value) return -EINVAL; - if (value) { - ret = tsl2x7x_prox_cal(indio_dev); - if (ret < 0) - return ret; - } + ret = tsl2x7x_prox_cal(indio_dev); + if (ret < 0) + return ret; ret = tsl2x7x_invoke_change(indio_dev); if (ret < 0)