Quoting Eric W. Beiderman (ebiederm@xxxxxxxxxxxx):
> From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
>
> Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
> ---
> kernel/capability.c | 6 ++++--
> 1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/capability.c b/kernel/capability.c
> index cc5f071..493d972 100644
> --- a/kernel/capability.c
> +++ b/kernel/capability.c
> @@ -429,12 +429,14 @@ bool nsown_capable(int cap)
> * targeted at it's own user namespace and that the given inode is owned
> * by the current user namespace or a child namespace.
> *
> - * Currently inodes can only be owned by the initial user namespace.
> + * Currently we check to see if an inode is owned by the current
> + * user namespace by seeing if the inode's owner maps into the
> + * current user namespace.
> *
> */
> bool inode_capable(const struct inode *inode, int cap)
> {
> struct user_namespace *ns = current_user_ns();
>
> - return ns_capable(ns, cap) && (ns == &init_user_ns);
> + return ns_capable(ns, cap) && kuid_has_mapping(ns, inode->i_uid);
> }
> --
> 1.7.2.5
>
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