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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 1/4] fs: devfs: Allow mounting only on /dev/
Date: Tue, 13 Oct 2015 09:51:51 +0200	[thread overview]
Message-ID: <1444722714-30445-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1444722714-30445-1-git-send-email-s.hauer@pengutronix.de>

We have places in the code where we assume that devfs is mounted on
/dev/, so enforce this path to avoid surprises.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 fs/devfs.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/devfs.c b/fs/devfs.c
index c6db25c..5c96682 100644
--- a/fs/devfs.c
+++ b/fs/devfs.c
@@ -228,6 +228,13 @@ static int devfs_stat(struct device_d *_dev, const char *filename, struct stat *
 
 static int devfs_probe(struct device_d *dev)
 {
+	struct fs_device_d *fsdev = dev_to_fs_device(dev);
+
+	if (strcmp(fsdev->path, "/dev")) {
+		dev_err(dev, "devfs can only be mounted on /dev/\n");
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
-- 
2.6.0


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  reply	other threads:[~2015-10-13  7:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-13  7:51 devfs fixes Sascha Hauer
2015-10-13  7:51 ` Sascha Hauer [this message]
2015-10-13  7:51 ` [PATCH 2/4] fs: devfs: Allow mount path in cdev_open Sascha Hauer
2015-10-13  8:25   ` Sascha Hauer
2015-10-13  7:51 ` [PATCH 3/4] filetype: Use cdev_open Sascha Hauer
2015-10-13  7:51 ` [PATCH 4/4] fs: pass path directly to cdev_open Sascha Hauer

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