diff options
| author | Andrey Vagin <avagin@openvz.org> | 2016-09-06 00:47:13 -0700 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2016-09-22 19:59:39 -0500 |
| commit | bcac25a58bfc6bd79191ac5d7afb49bea96da8c9 (patch) | |
| tree | 28a8ae71b2939267deba0807bcbbed28e77470c0 /include/linux/proc_ns.h | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
kernel: add a helper to get an owning user namespace for a namespace
Return -EPERM if an owning user namespace is outside of a process
current user namespace.
v2: In a first version ns_get_owner returned ENOENT for init_user_ns.
This special cases was removed from this version. There is nothing
outside of init_user_ns, so we can return EPERM.
v3: rename ns->get_owner() to ns->owner(). get_* usually means that it
grabs a reference.
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/proc_ns.h')
| -rw-r--r-- | include/linux/proc_ns.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/proc_ns.h b/include/linux/proc_ns.h index de0e7719d4c5..ca85a4348ffc 100644 --- a/include/linux/proc_ns.h +++ b/include/linux/proc_ns.h @@ -18,6 +18,7 @@ struct proc_ns_operations { struct ns_common *(*get)(struct task_struct *task); void (*put)(struct ns_common *ns); int (*install)(struct nsproxy *nsproxy, struct ns_common *ns); + struct user_namespace *(*owner)(struct ns_common *ns); }; extern const struct proc_ns_operations netns_operations; |