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
25 char sysname[__NEW_UTS_LEN + 1];
26 char nodename[__NEW_UTS_LEN + 1];
27 char release[__NEW_UTS_LEN + 1];
28 char version[__NEW_UTS_LEN + 1];
29 char machine[__NEW_UTS_LEN + 1];
30 char domainname[__NEW_UTS_LEN + 1];
35 #include <linux/sched.h>
36 #include <linux/kref.h>
37 #include <linux/nsproxy.h>
38 #include <linux/err.h>
40 struct uts_namespace {
42 struct new_utsname name;
44 extern struct uts_namespace init_uts_ns;
47 static inline void get_uts_ns(struct uts_namespace *ns)
52 extern struct uts_namespace *copy_utsname(unsigned long flags,
53 struct uts_namespace *ns);
54 extern void free_uts_ns(struct kref *kref);
56 static inline void put_uts_ns(struct uts_namespace *ns)
58 kref_put(&ns->kref, free_uts_ns);
61 static inline void get_uts_ns(struct uts_namespace *ns)
65 static inline void put_uts_ns(struct uts_namespace *ns)
69 static inline struct uts_namespace *copy_utsname(unsigned long flags,
70 struct uts_namespace *ns)
72 if (flags & CLONE_NEWUTS)
73 return ERR_PTR(-EINVAL);
79 static inline struct new_utsname *utsname(void)
81 return ¤t->nsproxy->uts_ns->name;
84 static inline struct new_utsname *init_utsname(void)
86 return &init_uts_ns.name;
89 extern struct rw_semaphore uts_sem;
91 #endif /* __KERNEL__ */
93 #endif /* _LINUX_UTSNAME_H */