Mounting from non-init user namespaces for filesystems without FS_USERNS_MOUNT was prohibited by commit e1c5ae59c0f22.
The new flag FS_VE_MOUNT was introduced in commit c0e4e73052f89 to allow mounting such filesystems inside container user namespaces. https://virtuozzo.atlassian.net/browse/VSTOR-105978 Signed-off-by: Aleksei Oladko <[email protected]> --- fs/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/super.c b/fs/super.c index 93b125ebd4e3..b8da7df103b3 100644 --- a/fs/super.c +++ b/fs/super.c @@ -778,7 +778,8 @@ struct super_block *sget_fc(struct fs_context *fc, * This can happen when fsconfig() is called from init_user_ns with * an fs_fd opened in another user namespace. */ - if (user_ns != &init_user_ns && !(fc->fs_type->fs_flags & FS_USERNS_MOUNT)) { + if (user_ns != &init_user_ns && !(fc->fs_type->fs_flags & FS_USERNS_MOUNT || + fc->fs_type->fs_flags & FS_VE_MOUNT)) { errorfc(fc, "VFS: Mounting from non-initial user namespace is not allowed"); return ERR_PTR(-EPERM); } -- 2.43.0 _______________________________________________ Devel mailing list [email protected] https://lists.openvz.org/mailman/listinfo/devel
