Lines Matching defs:ns
20 static struct ucounts *inc_uts_namespaces(struct user_namespace *ns)
22 return inc_ucount(ns, current_euid(), UCOUNT_UTS_NAMESPACES);
36 refcount_set(&uts_ns->ns.count, 1);
41 * Clone a new ns copying an original utsname, setting refcount to 1
43 * Return ERR_PTR(-ENOMEM) on error (failure to allocate), new ns otherwise
48 struct uts_namespace *ns;
58 ns = create_uts_ns();
59 if (!ns)
62 err = ns_alloc_inum(&ns->ns);
66 ns->ucounts = ucounts;
67 ns->ns.ops = &utsns_operations;
70 memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
71 ns->user_ns = get_user_ns(user_ns);
73 return ns;
76 kmem_cache_free(uts_ns_cache, ns);
106 void free_uts_ns(struct uts_namespace *ns)
108 dec_uts_namespaces(ns->ucounts);
109 put_user_ns(ns->user_ns);
110 ns_free_inum(&ns->ns);
111 kmem_cache_free(uts_ns_cache, ns);
114 static inline struct uts_namespace *to_uts_ns(struct ns_common *ns)
116 return container_of(ns, struct uts_namespace, ns);
121 struct uts_namespace *ns = NULL;
127 ns = nsproxy->uts_ns;
128 get_uts_ns(ns);
132 return ns ? &ns->ns : NULL;
135 static void utsns_put(struct ns_common *ns)
137 put_uts_ns(to_uts_ns(ns));
143 struct uts_namespace *ns = to_uts_ns(new);
145 if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) ||
149 get_uts_ns(ns);
151 nsproxy->uts_ns = ns;
155 static struct user_namespace *utsns_owner(struct ns_common *ns)
157 return to_uts_ns(ns)->user_ns;