1 #ifndef _LINUX_UTSNAME_H
2 #define _LINUX_UTSNAME_H
4 #define __OLD_UTS_LEN 8
6 struct oldold_utsname {
14 #define __NEW_UTS_LEN 64
35 #include <linux/sched.h>
36 #include <linux/kref.h>
37 #include <linux/nsproxy.h>
38 #include <linux/err.h>
39 #include <asm/atomic.h>
41 struct uts_namespace {
43 struct new_utsname name;
45 extern struct uts_namespace init_uts_ns;
48 static inline void get_uts_ns(struct uts_namespace *ns)
53 extern struct uts_namespace *copy_utsname(unsigned long flags,
54 struct uts_namespace *ns);
55 extern void free_uts_ns(struct kref *kref);
57 static inline void put_uts_ns(struct uts_namespace *ns)
59 kref_put(&ns->kref, free_uts_ns);
62 static inline void get_uts_ns(struct uts_namespace *ns)
66 static inline void put_uts_ns(struct uts_namespace *ns)
70 static inline struct uts_namespace *copy_utsname(unsigned long flags,
71 struct uts_namespace *ns)
73 if (flags & CLONE_NEWUTS)
74 return ERR_PTR(-EINVAL);
80 static inline struct new_utsname *utsname(void)
82 return ¤t->nsproxy->uts_ns->name;
85 static inline struct new_utsname *init_utsname(void)
87 return &init_uts_ns.name;
90 extern struct rw_semaphore uts_sem;
92 #endif /* __KERNEL__ */
94 #endif /* _LINUX_UTSNAME_H */