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 <asm/atomic.h>
40 struct uts_namespace
{
42 struct new_utsname name
;
44 extern struct uts_namespace init_uts_ns
;
46 static inline void get_uts_ns(struct uts_namespace
*ns
)
52 extern int unshare_utsname(unsigned long unshare_flags
,
53 struct uts_namespace
**new_uts
);
54 extern int copy_utsname(int flags
, struct task_struct
*tsk
);
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 int unshare_utsname(unsigned long unshare_flags
,
63 struct uts_namespace
**new_uts
)
65 if (unshare_flags
& CLONE_NEWUTS
)
71 static inline int copy_utsname(int flags
, struct task_struct
*tsk
)
73 if (flags
& CLONE_NEWUTS
)
77 static inline void put_uts_ns(struct uts_namespace
*ns
)
82 static inline struct new_utsname
*utsname(void)
84 return ¤t
->nsproxy
->uts_ns
->name
;
87 static inline struct new_utsname
*init_utsname(void)
89 return &init_uts_ns
.name
;
92 extern struct rw_semaphore uts_sem
;
94 #endif /* __KERNEL__ */
96 #endif /* _LINUX_UTSNAME_H */