From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Sj811-0004uB-CR for barebox@lists.infradead.org; Mon, 25 Jun 2012 12:03:40 +0000 From: Jan Luebbe Date: Mon, 25 Jun 2012 14:03:27 +0200 Message-Id: <1340625807-18113-1-git-send-email-jlu@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH] fs/devfs.c: disallow write and erase if a partition is read-only To: barebox@lists.infradead.org Signed-off-by: Jan Luebbe --- fs/devfs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/devfs.c b/fs/devfs.c index ae48451..074bb34 100644 --- a/fs/devfs.c +++ b/fs/devfs.c @@ -49,6 +49,9 @@ static int devfs_write(struct device_d *_dev, FILE *f, const void *buf, size_t s { struct cdev *cdev = f->inode; + if (cdev->flags & DEVFS_PARTITION_READONLY) + return -EPERM; + return cdev_write(cdev, buf, size, f->pos, f->flags); } @@ -70,6 +73,9 @@ static int devfs_erase(struct device_d *_dev, FILE *f, size_t count, unsigned lo { struct cdev *cdev = f->inode; + if (cdev->flags & DEVFS_PARTITION_READONLY) + return -EPERM; + if (!cdev->ops->erase) return -ENOSYS; -- 1.7.10 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox