]> git.baikalelectronics.ru Git - kernel.git/commit
overlayfs: do not mount on top of idmapped mounts
authorChristian Brauner <christian.brauner@ubuntu.com>
Thu, 21 Jan 2021 13:19:47 +0000 (14:19 +0100)
committerChristian Brauner <christian.brauner@ubuntu.com>
Sun, 24 Jan 2021 13:27:20 +0000 (14:27 +0100)
commit1cc4de5926026c455705bf4dc142f09092d08623
tree394e9f50ee0b0725d462e64d785c24a9225bf9d9
parent77987e26718d4cd6ce79c636ce7221033bdbb7a4
overlayfs: do not mount on top of idmapped mounts

Prevent overlayfs from being mounted on top of idmapped mounts.
Stacking filesystems need to be prevented from being mounted on top of
idmapped mounts until they have have been converted to handle this.

Link: https://lore.kernel.org/r/20210121131959.646623-29-christian.brauner@ubuntu.com
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
fs/overlayfs/super.c