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From: Amir Goldstein <amir73il@gmail.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: Christian Brauner <christian.brauner@ubuntu.com>,
	linux-unionfs@vger.kernel.org
Subject: [PATCH] ovl: check that upperdir path is not on a read-only mount
Date: Thu,  8 Apr 2021 14:30:20 +0300	[thread overview]
Message-ID: <20210408113020.1708212-1-amir73il@gmail.com> (raw)

So far we only checked that sb is not read-only.

Suggested-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 fs/overlayfs/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index fdd72f1a9c5e..8d8366350093 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1185,8 +1185,8 @@ static int ovl_get_upper(struct super_block *sb, struct ovl_fs *ofs,
 	if (err)
 		goto out;
 
-	/* Upper fs should not be r/o */
-	if (sb_rdonly(upperpath->mnt->mnt_sb)) {
+	/* Upperdir path should not be r/o */
+	if (__mnt_is_readonly(upperpath->mnt)) {
 		pr_err("upper fs is r/o, try multi-lower layers mount\n");
 		err = -EINVAL;
 		goto out;
-- 
2.30.0


             reply	other threads:[~2021-04-08 11:30 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-08 11:30 Amir Goldstein [this message]
2021-04-09  8:04 ` [PATCH] ovl: check that upperdir path is not on a read-only mount Miklos Szeredi

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