-/*
- * copies the nsproxy, setting refcount to 1, and grabbing a
- * reference to all contained namespaces. Called from
- * sys_unshare()
- */
-struct nsproxy *dup_namespaces(struct nsproxy *orig)
-{
- struct nsproxy *ns = clone_namespaces(orig);
-
- if (ns) {
- if (ns->mnt_ns)
- get_mnt_ns(ns->mnt_ns);
- if (ns->uts_ns)
- get_uts_ns(ns->uts_ns);
- if (ns->ipc_ns)
- get_ipc_ns(ns->ipc_ns);
+ new_nsp->mnt_ns = copy_mnt_ns(flags, tsk->nsproxy->mnt_ns, new_fs);
+ if (IS_ERR(new_nsp->mnt_ns)) {
+ err = PTR_ERR(new_nsp->mnt_ns);
+ goto out_ns;
+ }
+
+ new_nsp->uts_ns = copy_utsname(flags, tsk->nsproxy->uts_ns);
+ if (IS_ERR(new_nsp->uts_ns)) {
+ err = PTR_ERR(new_nsp->uts_ns);
+ goto out_uts;
+ }
+
+ new_nsp->ipc_ns = copy_ipcs(flags, tsk->nsproxy->ipc_ns);
+ if (IS_ERR(new_nsp->ipc_ns)) {
+ err = PTR_ERR(new_nsp->ipc_ns);
+ goto out_ipc;
+ }
+
+ new_nsp->pid_ns = copy_pid_ns(flags, task_active_pid_ns(tsk));
+ if (IS_ERR(new_nsp->pid_ns)) {
+ err = PTR_ERR(new_nsp->pid_ns);
+ goto out_pid;