| Message ID | 20191025112917.22518-6-mszeredi@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | allow unprivileged overlay mounts | expand |
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index d122c07f2a43..c7f21a049c6b 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1739,6 +1739,7 @@ static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags, static struct file_system_type ovl_fs_type = { .owner = THIS_MODULE, .name = "overlay", + .fs_flags = FS_USERNS_MOUNT, .mount = ovl_mount, .kill_sb = kill_anon_super, };
Enable unprivileged user namespace mounts of overlayfs. Overlayfs's permission model (*) ensures that the mounter itself cannot gain additional privileges by the act of creating an overlayfs mount. This feature request is coming from the "rootless" container crowd. (*) Documentation/filesystems/overlayfs.txt#Permission model Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> --- fs/overlayfs/super.c | 1 + 1 file changed, 1 insertion(+)