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1 | #ifndef _LINUX_UTSNAME_H |
2 | #define _LINUX_UTSNAME_H |
3 | |
4 | #define __OLD_UTS_LEN 8 |
5 | |
6 | struct oldold_utsname { |
7 | char sysname[9]; |
8 | char nodename[9]; |
9 | char release[9]; |
10 | char version[9]; |
11 | char machine[9]; |
12 | }; |
13 | |
14 | #define __NEW_UTS_LEN 64 |
15 | |
16 | struct old_utsname { |
17 | char sysname[65]; |
18 | char nodename[65]; |
19 | char release[65]; |
20 | char version[65]; |
21 | char machine[65]; |
22 | }; |
23 | |
24 | struct new_utsname { |
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]; |
31 | }; |
32 | |
33 | #ifdef __KERNEL__ |
34 | |
35 | #include <linux/sched.h> |
36 | #include <linux/kref.h> |
37 | #include <linux/nsproxy.h> |
38 | #include <linux/err.h> |
39 | |
40 | struct uts_namespace { |
41 | struct kref kref; |
42 | struct new_utsname name; |
43 | }; |
44 | extern struct uts_namespace init_uts_ns; |
45 | |
46 | #ifdef CONFIG_UTS_NS |
47 | static inline void get_uts_ns(struct uts_namespace *ns) |
48 | { |
49 | kref_get(&ns->kref); |
50 | } |
51 | |
52 | extern struct uts_namespace *copy_utsname(unsigned long flags, |
53 | struct uts_namespace *ns); |
54 | extern void free_uts_ns(struct kref *kref); |
55 | |
56 | static inline void put_uts_ns(struct uts_namespace *ns) |
57 | { |
58 | kref_put(&ns->kref, free_uts_ns); |
59 | } |
60 | #else |
61 | static inline void get_uts_ns(struct uts_namespace *ns) |
62 | { |
63 | } |
64 | |
65 | static inline void put_uts_ns(struct uts_namespace *ns) |
66 | { |
67 | } |
68 | |
69 | static inline struct uts_namespace *copy_utsname(unsigned long flags, |
70 | struct uts_namespace *ns) |
71 | { |
72 | if (flags & CLONE_NEWUTS) |
73 | return ERR_PTR(-EINVAL); |
74 | |
75 | return ns; |
76 | } |
77 | #endif |
78 | |
79 | static inline struct new_utsname *utsname(void) |
80 | { |
81 | return ¤t->nsproxy->uts_ns->name; |
82 | } |
83 | |
84 | static inline struct new_utsname *init_utsname(void) |
85 | { |
86 | return &init_uts_ns.name; |
87 | } |
88 | |
89 | extern struct rw_semaphore uts_sem; |
90 | |
91 | #endif /* __KERNEL__ */ |
92 | |
93 | #endif /* _LINUX_UTSNAME_H */ |
94 |
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od-2011-09-04
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v2.6.34-rc5
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v3.9