#include <linux/sched.h>
#include <linux/kref.h>
#include <linux/nsproxy.h>
+#include <linux/err.h>
#include <asm/atomic.h>
struct uts_namespace {
};
extern struct uts_namespace init_uts_ns;
+#ifdef CONFIG_UTS_NS
static inline void get_uts_ns(struct uts_namespace *ns)
{
kref_get(&ns->kref);
}
-#ifdef CONFIG_UTS_NS
-extern int unshare_utsname(unsigned long unshare_flags,
- struct uts_namespace **new_uts);
-extern int copy_utsname(int flags, struct task_struct *tsk);
+extern struct uts_namespace *copy_utsname(unsigned long flags,
+ struct uts_namespace *ns);
extern void free_uts_ns(struct kref *kref);
static inline void put_uts_ns(struct uts_namespace *ns)
kref_put(&ns->kref, free_uts_ns);
}
#else
-static inline int unshare_utsname(unsigned long unshare_flags,
- struct uts_namespace **new_uts)
+static inline void get_uts_ns(struct uts_namespace *ns)
{
- if (unshare_flags & CLONE_NEWUTS)
- return -EINVAL;
-
- return 0;
}
-static inline int copy_utsname(int flags, struct task_struct *tsk)
+static inline void put_uts_ns(struct uts_namespace *ns)
{
- if (flags & CLONE_NEWUTS)
- return -EINVAL;
- return 0;
}
-static inline void put_uts_ns(struct uts_namespace *ns)
+
+static inline struct uts_namespace *copy_utsname(unsigned long flags,
+ struct uts_namespace *ns)
{
+ if (flags & CLONE_NEWUTS)
+ return ERR_PTR(-EINVAL);
+
+ return ns;
}
#endif