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include/linux/utsname.h
1.66 KB
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#ifndef _LINUX_UTSNAME_H #define _LINUX_UTSNAME_H |
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#include <linux/sched.h> #include <linux/kref.h> #include <linux/nsproxy.h> |
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#include <linux/ns_common.h> |
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#include <linux/err.h> |
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#include <uapi/linux/utsname.h> |
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enum uts_proc { UTS_PROC_OSTYPE, UTS_PROC_OSRELEASE, UTS_PROC_VERSION, UTS_PROC_HOSTNAME, UTS_PROC_DOMAINNAME, }; |
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struct user_namespace; extern struct user_namespace init_user_ns; |
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struct uts_namespace { struct kref kref; struct new_utsname name; |
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struct user_namespace *user_ns; |
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struct ucounts *ucounts; |
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struct ns_common ns; |
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}; extern struct uts_namespace init_uts_ns; |
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#ifdef CONFIG_UTS_NS |
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static inline void get_uts_ns(struct uts_namespace *ns) { kref_get(&ns->kref); } |
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extern struct uts_namespace *copy_utsname(unsigned long flags, |
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struct user_namespace *user_ns, struct uts_namespace *old_ns); |
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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); } |
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#else static inline void get_uts_ns(struct uts_namespace *ns) { } static inline void put_uts_ns(struct uts_namespace *ns) { } static inline struct uts_namespace *copy_utsname(unsigned long flags, |
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struct user_namespace *user_ns, struct uts_namespace *old_ns) |
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{ if (flags & CLONE_NEWUTS) return ERR_PTR(-EINVAL); |
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return old_ns; |
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} #endif |
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#ifdef CONFIG_PROC_SYSCTL extern void uts_proc_notify(enum uts_proc proc); #else static inline void uts_proc_notify(enum uts_proc proc) { } #endif |
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static inline struct new_utsname *utsname(void) { |
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return ¤t->nsproxy->uts_ns->name; |
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} static inline struct new_utsname *init_utsname(void) { |
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return &init_uts_ns.name; |
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} |
1da177e4c Linux-2.6.12-rc2 |
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extern struct rw_semaphore uts_sem; |
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#endif /* _LINUX_UTSNAME_H */ |