#include <linux/kref.h>
#include <linux/nsproxy.h>
#include <linux/sched.h>
+#include <linux/err.h>
#define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 8)
#define UIDHASH_SZ (1 << UIDHASH_BITS)
struct user_namespace {
struct kref kref;
- struct list_head uidhash_table[UIDHASH_SZ];
+ struct hlist_head uidhash_table[UIDHASH_SZ];
struct user_struct *root_user;
};
static inline struct user_namespace *copy_user_ns(int flags,
struct user_namespace *old_ns)
{
- return NULL;
+ if (flags & CLONE_NEWUSER)
+ return ERR_PTR(-EINVAL);
+
+ return old_ns;
}
static inline void put_user_ns(struct user_namespace *ns)