diff options
Diffstat (limited to 'ipc/namespace.c')
| -rw-r--r-- | ipc/namespace.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/ipc/namespace.c b/ipc/namespace.c index 177fa9db391d..3c1e8d3bd7d3 100644 --- a/ipc/namespace.c +++ b/ipc/namespace.c @@ -149,6 +149,11 @@ void put_ipc_ns(struct ipc_namespace *ns) } } +static inline struct ipc_namespace *to_ipc_ns(struct ns_common *ns) +{ + return container_of(ns, struct ipc_namespace, ns); +} + static void *ipcns_get(struct task_struct *task) { struct ipc_namespace *ns = NULL; @@ -160,17 +165,17 @@ static void *ipcns_get(struct task_struct *task) ns = get_ipc_ns(nsproxy->ipc_ns); task_unlock(task); - return ns; + return ns ? &ns->ns : NULL; } static void ipcns_put(void *ns) { - return put_ipc_ns(ns); + return put_ipc_ns(to_ipc_ns(ns)); } static int ipcns_install(struct nsproxy *nsproxy, void *new) { - struct ipc_namespace *ns = new; + struct ipc_namespace *ns = to_ipc_ns(new); if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) || !ns_capable(current_user_ns(), CAP_SYS_ADMIN)) return -EPERM; @@ -184,9 +189,7 @@ static int ipcns_install(struct nsproxy *nsproxy, void *new) static unsigned int ipcns_inum(void *vp) { - struct ipc_namespace *ns = vp; - - return ns->ns.inum; + return ((struct ns_common *)vp)->inum; } const struct proc_ns_operations ipcns_operations = { |